Title: Sirenews
Full Citation
Permanent Link: http://ufdc.ufl.edu/UF00099157/00044
 Material Information
Title: Sirenews newsletter of the IUCNSSC Sirenia Specialist Group
Alternate Title: Siren news
Physical Description: v. : ; 29 cm.
Language: English
Creator: International Union for Conservation of Nature and Natural Resources -- Sirenia Specialist Group
International Union for Conservation of Nature and Natural Resources -- Sirenia Specialist Group
Publisher: IUCN/SSC Sirenia Specialist Group
Place of Publication: Washington D.C
Washington D.C
Publication Date: October 2005
Frequency: two no. a year[apr. 1984-]
Subject: Sirenia -- Periodicals   ( lcsh )
Marine mammals -- Periodicals   ( lcsh )
Genre: periodical   ( marcgt )
Bibliography: Includes bibliographical references.
Additional Physical Form: Also issued via the World Wide Web.
Dates or Sequential Designation: No. 1 (Apr. 1984)-
Issuing Body: Supported 1984-Apr. 1992 by the Species Survival Commission of IUCN, the U.S. Fish and Wildlife Service, and the U.S. Marine Mammal Commission; Oct. 1992 by the U.S. Marine Mammal Commission & U.S. Fish and Wildlife Service; Apr. 1993-Oct. 1994 by the U.S. Marine Mammal Commission; <Oct. 1995>- by the U.S. Marine Mammal Commission and Sea World, Inc.
General Note: Title from caption.
General Note: Latest issue consulted: No. 48 (Oct. 2007).
 Record Information
Bibliographic ID: UF00099157
Volume ID: VID00044
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 35841617
lccn - 2009208704
issn - 1017-3439


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0 1rene ws

CeAwsletter of the TJUC9Vf/SSC
Sirenia Specialist qroup




Sirenews An Evolutionary Perspective

A little over 20 years ago, in 1984, Daryl Domning had a conversation with Clayton Ray
of the Smithsonian, about what to call the new publication Daryl wanted to produce. He
envisioned that the publication would be an important conduit for sharing information on
the most recent sirenian research and conservation activities from around the world.
Daryl does not have a clear recollection of the exact beginnings, but he does remember
that a number of conversations emerged out of the IUCN Sirenian Specialist Group
(SSG) about the need for sharing information through some type of news bulletin. Daryl,
with his incredible productivity and energy, said he would be able to take on the task.
Robin Best, who was the SSG chair at the time, had been keen to see something like this
happen, particularly after Helene Marsh had produced a dugong newsletter. So Robin
enthusiastically gave his blessing to publish under the auspices of the SSG.

The format Daryl used was inspired by the Society of Vertebrate Paleontology News
Bulletin which was started in the late 1940s. Daryl wanted something that would be
chatty, rather than formal, and would not evolve into a peer-reviewed journal. He wanted
a newsletter format that kept people with an interest in sirenians up-to-date on activities,

SU IO N Commission de la sauvegarde des especes-Species Survival Commission
un~l Mm&ial pire I NPMalann
Sirenews (ISSN 1017-3439) appears twice a year
in April and October and is edited by James A. Powell and Cynthia R. Taylor,
Wildlife Trust, 1601 3rd Street S., Suite F, St. Petersburg, FL 33701 USA
It is supported by the U.S. Marine Mammal Commission and Sea World, Inc.

the latest news, publications, and meetings. For a title, the name ".,iit '" had already been
taken by IUCN for their seas program. Clayton Ray suggested ", i e/i in '" and it fit well.
The first copy in 1984 was published by IUCN. Daryl published subsequent issues
himself with contributions from various organizations over the years to cover costs. The
US Marine Mammal Commission has been a strong supporter throughout the newsletter's

Sirenews' Guiding Principles are hinged primarily on getting news from the field
whenever and however possible and to provide free communication. Daryl rarely turned
away contributions to the newsletter and he strongly encouraged (having been on the
receiving end of the phone/letter/e-mail) reports from students and scientists about what
they were doing in their own fields of research. That is, what they wanted to let the rest
of the world to know or as Daryl summed up the concept "what I did last summer, a
chatty organ of communication not to evolve to a peer-reviewed format". The newsletter
has also included various announcements, memorials, and miscellaneous content of
interest. Daryl often provided an abstract in the absence of a published paper elsewhere -
simply to get information out to the community. The newsletter has always been done in
hardcopy form so it could be easily reproduced and mailed at minimal cost. Daryl's
intention from the outset has been to include references to current literature and sirenian
news for those that did not have easy access to libraries. He always wanted people
without easy access to a computer to have a means of communication that kept them
within the informational loop.

Rarely has an article in Sirenews elicited much controversy and only occasionally did
Daryl receive a letter to the editor, a correction or comments from someone taking issue.
Not many "scoops" have occurred either, with the exception of Tony Preen's
documentation of a lack of dugong mortality in the southern Persian Gulf after the first
Gulf War. It had been surmised that there might be many dugong deaths, but Tony did
not see observed dugong deaths in the south as feared. Daryl was happy to publish the
good news. Daryl freely editorialized and contributed to Sirenews, particularly if he had
not been successful in "persuading" potential article authors to send something in to the
newsletter for publication. He let it be known that if you didn't send along your own
article well, you might just read later what Daryl would report on it... whichever
scenario one preferred. That tended to get more response from people in the field.

Daryl began producing Sirenews 20 years ago using the word processing program
WordStar (for those of us old enough to remember when WordStar was about the only
word processing program around). Only two years ago, Daryl stopped using WordStar to
produce the newsletter for one reason, "Well it seemed to throw off that new mail-merge
program I bought; I think my Wordstar program became corrupted over the years I
probably just wore it out", he said. Following his personal philosophical approach, he
just stuck with what worked.

With Daryl's approach squarely in mind, Cyndi and I as the new editors of Sirenews are
very excited to take on this challenge but at the same time, we are quite apprehensive
about following in such powerful fluke strokes. Daryl has urged us to solicit editorial

Sirenews No. 44

October 2005

comment from many sources. There is also a strong need to keep abreast of sirenian
population issues and encourage more submissions of abstracts and information of
interest that may not make it into mainstream publications. Daryl has encouraged us to
pursue more "investigative reporting" of emerging issues and topics of common interest.
Original news is needed, not just what can be gleaned from the wire services. Most
importantly, people are encouraged to submit items of interest to increase the number of
direct contributions.

In Daryl's vision, which we share, Sirenews should remain and continue to grow as the
authoritative source of sirenian news. As Daryl told me, "There's much going on in the
sirenian world that's not being reported, and the goal of Sirenews is to get it out there".
Daryl also reminded us that "content is more important than form". Keep it simple to
keep it flowing.

According to Daryl, electronic media often operates on a shorter news cycle, tends
toward a discussion board format, and has certain limitations because of the need for
computer access. Sirenews, as the voice of the IUCN/SSG, will remain a broadly
disseminated permanent hard-copy record that can be kept filed in personal and public
libraries around the world, admittedly with its own limitations. But now with the help of
Sirenian International and the Society for Marine Mammalogy, Sirenews can also be
found on the internet, the best of both worlds.

In 2003 at the 2nd International Sirenian Symposium in Greensboro, North Carolina,
Daryl was presented with an award from the U.S. Geological Survey and the U.S. Fish
and Wildlife Service. The honor was presented in appreciation for Daryl's outstanding
contribution to sirenian conservation over the years.

We aim to maintain and contribute to Daryl's legacy by keeping as close to his vision as
we can. We aim to keep Sirenews readers up on the latest news and views. We will do
our best to follow Daryl's suggestions based on over 20 years of experience and
dedication to keep Sirenews simple, make it easily available, keep it free, keep it
informative, promote discussion and, of course, keep nagging you to send in articles and

As the first order of business and as a tribute to Daryl, the editors invite you to send in
any thoughts, remembrances or interesting tales you wish to share about the two decades
of Sirenews and its long-time editor. We will be pleased to put them in print for the next
edition of Sirenews. Oh yes, one final note -- please don't forget to send in your articles
for the next issue -- the deadline is 01 April 2006.

Thank you very much, Daryl, for your invaluable legacy. --Buddy Powell and Cyndi
Taylor, Editors

Sirenews No. 44

October 2005


A symposium and workshop to re-assess the status of all sirenian species
(manatees and dugongs) and subspecies worldwide was hosted by the Perry Institute of
Marine Science and Wildlife Trust through funding from the Marine Mammal
Commission. Staff from Wildlife Trust and the Marine Mammal Commission, as part of
the IUCN Species Survival Commission (SSC) Sirenia Specialist Group, traveled to
Sapporo, Japan in late August to convene the workshop at the Ninth International
Mammalogical Congress. Six invited speakers from around the world (Brazil, Ivory
Coast, Australia, USA, Belize, Puerto Rico) were assigned the task of assessing the status
of a sirenian species or subspecies and presenting that information at the symposium
All living species and subspecies in the Order Sirenia are classified by the World
Conservation Union (IUCN) as vulnerable to extinction. A vulnerable taxon is
considered to be one that is "not Critically Endangered or Endangered, but is facing a
high risk of extinction in the wild in the medium term future" (IUCN 2001). If the
status of the various sirenian taxa is not formally reviewed and justified by the Sirenian
Specialist Group before 2006, a default listing of "data deficient" will occur in the IUCN
Red List of Threatened Species. This category would indicate that there is inadequate
data available on which to assess risk of extinction. A data deficient Red List
classification would not only misrepresent current knowledge of the sirenians, but could
potentially have significant and negative consequences for sirenian conservation if it
diminishes conservation or research activity or urgency of action by governments or
The symposium and workshop were organized to develop formal justifications
and recommendations regarding updated status of sirenian species worldwide for the
IUCN Red List. The morning symposium consisted of presentations on the status of
species and subspecies. Speakers included Dr. John Reynolds, head of the U.S. Marine
Mammal Commission and co-chair of the Sirenia Specialist Group, who gave a welcome
and introduction; Dr. Helene Marsh, James Cook University, on the status of dugongs;
Dr. Chip Deutsch, Florida Fish and Wildlife Conservation Commission, on the status of
Florida manatees; Dr. Miriam Marmontel, Instituto de Desenvolvimento Sustentavel
Mamiraua, on the status of Amazonian manatees; Dr. Akoi Kouadio, Wildlife
Conservation Society, on the status of West African manatees; and Ms. Caryn Self
Sullivan, Texas A&M University and Dr. Tony Mignucci, Caribbean Stranding Network,
on the status of Antillean manatees (see Abstracts below). In addition, Mr. Wes Sechrest,
Lead Coordinator for the Global Mammal Assessment (GMA) for IUCN, provided an
overview of the GMA process and how it complements the Red List Assessment.
Speakers have been gathering and assimilating data on the individual species over the
past two years. Speakers were given 30 minutes each to address status, threats, and the
future of each sirenian group. In addition, numerous sirenian posters on the status of
individual populations of sirenians throughout the world were available for viewing
during the Congress. Approximately 50 people attended the symposium.
The afternoon workshop consisted of a smaller group of invited participants and
focused on the formal species status assessments, with discussions of the robustness of
the scientific information available for each taxon. For Florida manatees and dugongs,

Sirenews No. 44

October 2005

the scientific evidence and analyses were comprehensive and adequate to justify a
category. For Antillean and West Indian manatees, additional analysis and justification
will be obtained over the next couple months to strengthen and validate the suggested
category. For Amazonian manatees and West African manatees, the scientific
justifications were marginal due to a lack of compiled data. The assessments for these
two species will require a great deal of work over the next six months to strengthen, as
much as possible, the draft assessment. Draft recommendations for each species and
subspecies will be presented to additional members of the Sirenia Specialist Group for
approval and incorporation into the Global Mammal Assessment database and presented
as formal recommendations to the IUCN Red List of Threatened Species. Cynthia

11 December 2005 at the 16th Biennial Conference on the Biology of Marine Mammals,
San Diego, CA
You are invited to participate in the Third International Sirenian Symposium on Sunday,
December 11, 2005 from 8:30AM-12:00 PM, prior to the 16th Biennial Conference on
the Biology of Marine Mammals. The goal of the symposium is to foster communication
between researchers, managers, and policy makers. Sirenian scientists and resource
managers were invited to submit abstracts to speak at the symposium. Deadlines for
abstract submission and early registration have passed. Please contact Nicole Adimey
(Nicole_Adimey@fws.gov) for further information.


A Lone Dugong on Cocos (Keeling) Islands, Indian Ocean. The Cocos
(Keeling) Islands (120 10' S, 960 52' E) are a territory of Australia and are located in the
Indian Ocean approximately 1000 km from Indonesia and over 2000 km from the
Australian mainland. They comprise two atolls; the northern atoll contains North Keeling
Island (Pulu Keeling National Park) and the southern atoll contains 26 islands arranged in
a horseshoe pattern surrounding a shallow lagoon. The Cocos (Keeling) Islands are
isolated from the nearest shallow coastal marine habitat (Java, Indonesia) by 1000 km
and water depths of between 2000 and 4000 m.
In June 2002 a confirmed sighting of a single male dugong was made on Cocos
(Keeling) Islands. This was the first confirmed sighting of a dugong on the atoll even
though people have inhabited the islands since 1826. Photos were taken and one photo
was published in a book of anecdotal stories (Croll, 2002). The dugong has remained on
the atoll since this date and is seen regularly by divers. It was noticeably absent from the
atoll for a period of three months, and when it reappeared it was showing a loss of body
condition (Dieter and Karen Gerhardt, pers. comm.). This could indicate that the dugong
attempted to leave the atoll but did not find suitable habitat.
Unlike a solitary dugong at Vanuatu (Adams, 1998), it has not initiated contact
with humans, but returns to a localized area that is regularly used by SCUBA divers.

Sirenews No. 44

October 2005

Anecdotal reports indicate that it generally keeps its distance from divers but has swum
with manta rays, dolphins and batfish on several occasions.
Dugongs have the ability to travel large distances (Marsh and Rathbun, 1990, de
Iongh et al., 1998, Preen, 2001), but there are few records of dugongs making long-
distance movements across deep water. A long-distance movement such as this example
to Cocos (Keeling) Islands could indicate how previous colonization events may have
occurred. This was suggested for similar movements of dugongs to the Seychelles (Marsh
et al., 2001). The Cocos (Keeling) Islands have extensive seagrass beds which support a
large population of green and hawksbill turtles, and so this dugong will have an adequate
food supply. However, how it will cope without a mate will be interesting to observe in
the future. Further behavioral observations and any extended absences should be


Adam, S. 1998. Dugong-human interactions. Sirenews 30: 13-16.

Croll, G. 2002. Cocos Capers. Greg Croll. 200 pp.
De Iongh, H. H., Langeveld, P., and Van der Wal, M. 1998. Movement and home ranges
of dugongs around the Lease Islands, East Indonesia. Marine Ecology 19(3): 179-193.

Marsh, H., and Rathbun, G. B. 1990. Development and application of conventional and
satellite radio tracking techniques for studying dugong movements and habitat use.
Australian Wildlife Research 17(1): 83-100.

Marsh, H., Penrose, H., Eros, C. and Hugues, J. 2001. Dugong Status Reports and Action
Plans for Countries and Territories in its Range. UNEP, Kenya.

Preen, A. 2001. Dugongs, Boats, Dolphins and Turtles in the Townsville-Cardwell
Region and recommendations for a Boat Traffic Management Plan for the Hinchinbrook
Dugong Protection Area. GBRMPA, Townsville.

- Whiting, Scott D. (Biomarine International, P.O. Box 376u, Charles Darwin
University, NT 0815, Australia; tel.: +61 8 89327607; fax: +61 8 89327607; e-mail:
; Web page: ), Robert Thorn, and
Wendy Murray (Parks Australia North, P.O. Box 1043, West Island, Cocos (Keeling)
Islands, Western Australia 6799)


Bacterial Survey in Captive Amazonian Manatees Indicates the Presence of
Campylobacter sp., a Potentially Harmful Pathogen. Bacterial infections can be
related to 30-50% of mortality in aquatic mammals and in most cases the infection agent
is not identified. A bacterial survey study was conducted in July 2004 in the pools of the
Laborat6rio de Mamiferos Aquaticos, Instituto Nacional de Pesquisas da Amaz6nia
(INPA), where 30 Amazonian manatees are kept under veterinary supervision.

Sirenews No. 44

October 2005

Ninety-eight samples were collected from all the Amazonian manatees whenever
the opportunity permitted. Swabs from the nostrils, mouth, genital opening, anus, eyes,
wounds, and, in one case, from an abscess were collected during the cleaning of the
pools. Some manatees behaved very passively during the swab collection, while others
were very sensitive to the touch of the swab, despite their having lived in captivity for
many years. In these cases we did not insist and decided to collect from another manatee.
A total of 22 samples (22.45%), corresponding to 17 manatees (56.7%), were
positive for Campylobacter sp. We observed that 28.12% of the collected samples from
the nostrils were positive; 27.6% from the mouth; 13.3% from the genital opening; 6.25%
from the anus; and 50% from wounds; while samples from the eye and from one abscess
were negative. Based on this, we inferred a significant prevalence of Campylobacter in
the nostrils, mouth and wounds, which indicates possible sites for easy colonization for
these bacteria. Contaminated vegetation collected from the waters surrounding Manaus
and used for feeding the captive manatees is the most probable source of these bacteria.
We consider these results to be of high significance, since such a survey was
never conducted before, and as a contribution to the biology and ecology of Amazonian
manatees. This could help to minimize potential threats to the species as well as increase
the knowledge and perceived importance of Campylobacter in these aquatic mammals
and their environment.
We thank the keepers and interns of the Laborat6rio de Mamiferos
Aquaticos/INPA for helping during collection of swabs. This study was funded by the
Escola Nacional de Saude Publica/FIOCRUZ. Ana Luzia Lauria-Filgueiras*, Sheila
S. Duque*, Priscila Oliveira*, Graziele S. Mendes*, Wagner Esteves, Vera da Silva0,
Fernando C.W. Rosas0, J. Anselmo d'Affonseca Neto, and Salvatore Siciliano#
(*Setor de Campylobacter, Laborat6rio de Zoonoses Bacterianas, Dep. Bacteriologia,
IOC, FIOCRUZ, RJ, Brazil; Laborat6rio de Mamiferos Aquaticos, INPA, Manaus, AM,
Brazil; 4Grupo de Estudos de Mamiferos Marinhos da Regido dos Lagos, Laborat6rio de
Ecologia, Dep. Endemias Samuel Pessoa, Escola Nacional de Saude Piblica, FIOCRUZ,
RJ, Brazil)

First Female Amazonian Manatee Born in Captivity. On 2 April 2005, the first
female Amazonian manatee (Trichechus inunguis) was born at the Center for the
Preservation and Research on Aquatic Mammals (CPPMA), located near the
hydroelectric power plant of Balbina, 200 km from Manaus, Amazonas.
Her mother, named Aira, a 10-year-old manatee, arrived at CPPMA 12 months
after having been rescued from a fish tank where she was kept inadequately. Her keepers
intended to exhibit her in small communities in the interior of the Amazon.
Aira had a deep harpoon wound on her back, but was in good nutritional
condition. Her pregnancy was constantly monitored and several ultrasound exams were
carried out.
At a local school, a contest to choose a name for the young Amazonian manatee,
with the intention of increasing interaction between children and nature conservancy, has
come to an end. The winner, Manoel Xavier, age 11, suggested the name Morena
(Brunette), with the reason being an homage to the inhabitants of the riverside
community: Morenas that have as much difficulty in trying to survive as the manatees. -
Stella Maris (e-mail: < cppma@netium.com.br>)

Sirenews No. 44

October 2005

Eight West Indian Manatee Deaths in Maranhdo. An alarming development
has the IBAMA Manatee Project worried. In just the first semester of this year, the
Centro Mamiferos Aquaticos/IBAMA in Maranhao recorded eight deaths of West Indian
manatees in the state, of which seven were caused by accidental entanglement in fishing
"Despite all our efforts on behalf of the manatee, these fatal accidents are still
happening due to the size of the coastal zone and the difficulty of access to many areas",
said the Center's director, Josarnaldo Ramos.
The director explained that environmental education and social work are
constantly being developed for the traditional populations to make them aware of the
importance of preserving the critically endangered manatee. As part of this effort, a
campaign entitled "Don't Kill Manatees!" was implemented on the Maranhao coast in
2004. This campaign seeks mainly to inform fishermen and populations of coastal
communities of the need to preserve the manatee and prevent manatee deaths, forming a
network of volunteer collaborators of the Manatee Project along the coast.
In agreement with the national coordinator of the Manatee Project and chief of
CMA/IBAMA, Regis Lima, these accidental deaths have been registered by the Project
since 1993, and from then till now the Project has succeeded in developing prompt and
timely responses in the state.
Lima also explained that "it has not yet been possible to build up the Executive
Unit of CMA/IBAMA in Maranhao into conformity with the real needs of the work that
should be done in this immense littoral, which has one of the largest manatee populations
on the coast of Brazil, because the Center in Maranhao has only one Environmental
Analyst on its staff."
The Manatee Project is carried out by the IBAMA Center for Aquatic Mammals
in collaboration with the Aquatic Mammals Foundation and with official support from
the national oil company Petrobras.
Maranhao has the second-longest coastline in Brazil. With 640 km of beaches, it
is surpassed in this respect only by Bahia. In 1992 an expedition, named Igarakue, visited
74 localities between the municipality of Carutapera and the delta of the Parnaiba River,
to verify the distribution and conservation status of the West Indian manatee in the
region. Within this state alone, Igarakue established the presence of about 100 manatees,
out of an estimated 500 of this species on the entire coast of Brazil.
After this, in 2001, an executive unit of CMA/IBAMA was installed in the state.
In the following year, monitoring of manatees in the wild was begun. In the course of
these sightings, several groups of animals were observed interacting among themselves.
There were groups of approximately 12 in Baia de Tubardo, 5 in Baia de Sao Jose, and 6
in Baia de Sao Marcos, the three areas of greatest manatee occurrence on the Maranhao
Among the deaths noted this year, only one was a stranded newborn calf, which
was beached at Baia de Sao Jose do Ribamar. The carcass was taken for necropsy to the
laboratory of the Veterinary Hospital of the State University of Maranhao.
As with most standings, this one was a reflection of the degradation of
mangroves, which are an ideal nursery for manatees because they are places with calm
waters, abundant food, and availability of fresh water. Josarnaldo Ramos noted that
"Here in Maranhao, in the places where manatees are present, mangroves are still intact",

Sirenews No. 44

October 2005

and pointed out that this was the only recorded case of a dead manatee stranded in the
state. Luis Boaventura (IBAMA) [Translated by DPD]

Amazonian Manatee Symposium held in Manuas. On October 17-18 2005, the
Department of Fauna and Fisheries (DIFAP) of the Brazilian Environmental Agency
(IBAMA) organized a symposium about the Amazonian manatee in the city of Manaus,
in the heart of the Brazilian Amazon. During the symposium, eleven different Brazilian
research groups working with the Amazonian manatee met to discuss the current
conservation status of the species, share experiences, and establish a plan of action for
long-term conservation goals. Among the different activities initiated, one working
group was established to create a protocol for rescue of orphaned and wounded manatees
and transportation to rehabilitation centers. Another working group was established to
develop a protocol for reintroduction of captive-raised animals to the wild. There are
currently 72 Amazonian manatees kept in captivity at different research centers in Brazil:
34 at Instituto Nacional de Pesquisas da Amaz6nia (INPA) in Manaus; 32 at Centro de
Pesquisas e Protecgo de Mamiferos Aquaticos (CPPMA) in Balbina; 5 at Conselho
Nacional de Seringueiros-CNS (CNS) in Santarem; 1 at Museu Goeldi (MPEG) in Belem
and 1 at Bosque Rodrigues Alves in Belem. Of these, about 60% are calves and sub-
adults. With very few exceptions, the captive manatees in Brazil were either rescued as
calves and rehabilitated in captivity, or else were born in captivity. In the last eight years
a total of seven manatee births have been recorded, 5 at INPA and 2 at CPPMA and a
future program for reintroduction to the wild is in progress. Vera da Silva (INPA;
email: tucuxi@inpa.gov.br)


Japanese and U.S. Governments Agree to a New Military Base Plan in the Habitat of
the Okinawa Dugong. In Japan, the dugong (Dugong dugon) is observed only at
Okinawa Island, the northernmost limit of its range. The year-round habitat for the
dugong is limited to the east coast of the Island. There are large coral reef and seagrass
beds offshore of Henoko, Nago City, which is the center of distribution and the most
important habitat for the dugong. The local population of dugong is confined to a very
small area and is isolated from other populations, and their numbers are estimated to be
less than fifty, making Okinawa's dugong critically endangered.

The first relocation plan of Futenma Airstation (used by the United States Marine Corps)
to the shallow waters off Henoko (1500mx700m) was rejected by citizen's voting in
Nago City in 1997. The next plan, which was enlarged to the military/civilian airport
(2500mx730m) on the coral reef off Henoko in 2002, became impossible due to local
residents and conservation groups organizing a blockade. As a result, last month the
Japanese and U.S. governments have considered new options and agreed to a scaled-
down runway plan (1800mx700m) on the coast of the USMC Camp Schwab in Henoko
and Ooura.

This new plan is smaller than the former plan, but the conditions for the coral reefs,
seagrass beds, and dugong will worsen due to landfills in the shallow water, loud noises

Sirenews No. 44

October 2005

from the military exercise airplanes/helicopters, and pollution from the military

The IUCN submitted recommendations to the governments of Japan and the U.S. in 2000
and 2004, which included the establishment of protected areas and a conservation plan
for the dugong in Okinawa. UNEP has recommended in its 2002 dugong conservation
report that the Japanese government should take conservation actions. We continue to be
seriously concerned and dismayed that these recommendations have not been carried out.

We strongly urge the Japanese and U.S. governments to cancel the current construction
plan of the military airbase in Henoko and Ooura, and to designate protected areas and
develop a conservation action plan for the dugong in Okinawa. -Shin-ichi Hanawa
(WWF Japan; e-mail : hanawa@wwf.or.jp)


Not Many Know This About Snooty the Manatee's Birth. The recent birthday
celebration for our famous manatee, Snooty, marked his 57th year of life, and 56 of those
have been spent right here in Manatee County. [ED. NOTE: Snooty is the longest-lived
manatee in captivity anywhere in the world.] Each year, we hear that he was born at the
Miami Aquarium, but how many of us knew that the aquarium was inside a ship? Carol
Audette, curator of the Parker Manatee Aquarium at Bishop Planetarium and South
Florida Museum, seems to be the only person with this knowledge, which is natural,
based on her 21 years with this gentle mammal.
According to a recent article by Alice L. Luckhardt in Florida Monthly Magazine,
the Prins Valdemar, a steel-hulled, square-rigged Danish barkentine with four masts, was
sailed to Miami in 1925 with plans to convert her into a 100-room hotel and world-class
restaurant. Plans went awry when the large ship sank, blocking the harbor and all
incoming ship traffic, causing some developers to pull out of the city at the height of its
land boom. After four weeks of frustration, the ship was righted and the harbor cleared.
The steel and wood masts had been cut away and water pumped out. She went on to
survive the 1926 hurricane with 125-130 mph winds that devastated nearly every building
in Miami.
Now moored at Southeast First Street, the Prins was mostly forgotten until her
owners, Richard Walters, Cliff Storm, and George Reiser, formed plans to convert her
into a tourist attraction. After a permanent bulkhead was constructed around the ship, the
interior was fitted with large tanks to hold fish and mammals. The city of Miami loaned
tanks from the Miami Beach Aquarium, then closed, and a grand opening was held 1
May 1928.
Our Snooty, first called Little Snoots and later Baby Snoots, was born there 21
July 1948, and made his first appearance in Bradenton in conjunction with the DeSoto
Celebration of 1949. The aquarium owners were beginning to experience lease and
permitting problems with the city of Miami, opening the way for the young manatee to
remain in Bradenton. Walters spent many months seeking homes for his remaining
creatures, some 2,500 of them. Eventually, the few remaining were released into
Biscayne Bay and the facility was closed.

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For a time the Prins served as a civic center, but was soon declared unsafe and
demolished. Some of its remains were discovered when a causeway was under
construction in 1964, but the rest is buried beneath the American Airlines Arena, built in
1998. But Snooty had found a real home in Manatee County, first in a much-too-small
pool at the South Florida Museum's original home at the end of the Memorial Pier. When
the first permanent museum building was built years later, Snooty's pool, somewhat
larger, was declared adequate.
Now, however, he cavorts, much as a senior citizen manatee might cavort, in a
lavish facility known as the Parker Manatee Aquarium. He is, from time to time,
accompanied by younger manatees brought to the local facility to recuperate from
wounds received in the wild. Bubbles Greer (Source: Sarasota Herald-Tribune
[Florida], 3 August 2005)


Manatees Appear to Approve of the Improved Quality of the Water in Lake
Pontchartrain. Prior to Hurricane Katrina on 29 August 2005, manatees were becoming
steadily more numerous in Lake Pontchartrain, on the north side of New Orleans (see
Sirenews No. 41). Sightings of the docile mammals grazing in the once-polluted 634-
square-mile lake and branching bayous remain uncommon, but in the past decade, as the
lake has become cleaner, more of the endangered animals have been sighted each
"Rarely do you hear about more than four or five in Lake Pontchartrain," said Jim
Valade, manatee recovery leader for the U.S. Fish and Wildlife Service. But that is
changing. In late July, 20 to 30 manatees were sighted in the lake from the air, authorities
said. The Lake Pontchartrain Basin Foundation estimates that 100 or more manatees
could be in the lake, but others have questioned that estimate. These days, "they're
finding Lake Pontchartrain to their liking," Valade said. "It says an awful lot about the
quality of Lake Pontchartrain."
Valade said he is "99 percent" certain the manatees are from Florida, part of the
population in the Crystal River area on the west coast of the state, north of Tampa.
There's a "remote possibility" some are from Mexico, he said. "Some range farther than
others, exploring, looking for new opportunities for food," he said. The mammals are
expected to return home when the first cool front passes through in September or
The sea cows graze on lake grasses and look for fresh water to drink along the
shoreline and connecting streams and bayous. The plants manatees eat, including Ruppia
and Vallisneria, have been returning since shell dredging in the lake was stopped in 1993,
said Martin O'Connell, an assistant professor of environmental sciences at the University
of New Orleans. At high tide, the mammals may feed on grasses along the shoreline,
O'Connell said. "We'll have a better idea by the end of the summer about the size of the
manatee population in the lake," which may be higher, he said.
During a flight over the lake on 21 July, Carlton Dufrechou, executive director of
the Lake Pontchartrain Basin Foundation, said he counted about 30 manatees. He said
he's reluctant to share information about the manatees' increasing presence but
understands that without information, the public cannot help protect them.

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October 2005

In late July, two dead manatees washed ashore near Shelter No. 2 about 1 V2 miles
from Pontchartrain Beach, Dufrechou said. The bodies were disposed of before
authorities had an opportunity to determine the cause of death, he said. Steps have been
taken so it's unlikely other manatee carcasses will be destroyed before they're examined,
Dufrechou said. According to U.S. Fish and Wildlife records, manatees began
reappearing in Lake Pontchartrain in May 1995. The current population in U.S. waters --
the largest in the world -- is more than 3,000. But human contact has a damaging effect.
Most deaths are directly related to human contact or encroachment.
Besides collisions with recreational boats, commercial boats are a concern as
well, with the shrimping season scheduled to start in a couple of weeks, Dufrechou said.
Nets could trap the manatees because they lack hatches to allow the large animals to
escape. If the manatees are treated well, they'll come back, Dufrechou said. "Watch them.
Appreciate them. Don't disturb them," he said.
The "unprecedented" number of manatees creates "an intriguing possibility,"
Valade said. One or more of the female manatees, which have a gestation period of 13
months, could be pregnant and give birth in Lake Pontchartrain, he said. If that happens,
the calves likely will be imprinted on the area and return to the waters of their birth.
Since the devastation of the New Orleans area by Hurricane Katrina, no reports of
dead or injured manatees have reached Sirenews; but the pumping of grossly polluted
water from the flooded city, now underway, will certainly prove to be a setback to Lake
Pontchartrain's water quality.
Anyone who sees a manatee in Lake Pontchartrain is asked to report the sighting
to the foundation at (504) 836-2215. Leslie Williams can be reached at
or (504) 826-3358. (Adapted from an article by
Leslie Williams in the New Orleans Times-Picayune, 6 August 2005)


Bird-Filled Wetlands to be Site of US$3.3 Billion Luxury Housing
Development. The Khor al-Beidah lagoon in Umm Al-Quwain, United Arab Emirates,
is a pristine tidal flat teeming with wildlife, including endangered birds, sea turtles and
manatee-like dugong that swim among its tangles of mangroves. But a bevy of dredges
and construction gangs are about to begin transforming a 1,500-acre (600-hectare) parcel
into an 8.2 dirham (US$3.3 billion) luxury conglomeration of homes, shops, marinas and
beach resorts aimed at foreign buyers and tourists. The crown jewels of the development
are private villas to be built on artificial islands with gated access and views over one of
the few remaining mangrove archipelagos left in the Persian Gulf.
Developers say the waterfront complex, called Umm Al-Quwain Marina, will
skirt the mangroves and leave most of the 20 square miles (50 square kilometers) of
wetland untouched. "Our aim is to create a community of special neighborhoods
bordering an open stretch of water with views of the marina against a backdrop of the
gulf," says Mohammed Ali Alabbar, chairman of Emaar, the Middle East's largest
Environmentalists are aghast. They fear construction and people, cars and boats
will drive off Khor al-Beidah's internationally famous wildlife, including birds that
migrate from Siberia to Africa and the rare Socotra cormorant that nests almost
exclusively on the Arabian Peninsula. "We've seen it happen everywhere else. When you

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October 2005

start to dredge and build marinas, that's the end of it," says Colin Richardson, a 30-year
resident of Dubai and author of the periodic Emirates Bird Report and a guidebook to
local species.
The leaders of Umm Al-Quwain, however, are eager to bring big projects to their
emirate, which is the least-developed of the seven states in the United Arab Emirates. It
has little of the energy wealth of Abu Dhabi, the largest of the emirates, and few of the
tourists of Dubai, one of the world's fastest-growing cities and tourist destinations. The
35,000 people of Umm Al-Quwain, most of whom live in the small coastal city of the
same name, make their livings from fishing, growing dates, building traditional sailing
dhows and, lately, working at a container port.
Development is coming fast, though.
The deal for the lagoon complex was signed 23 July, and a few days later
developers announced Umm Al-Quwain's desert interior would be the site for a new city
that could eventually house as many as 500,000 people. The initial phase was valued at
8.2 billion Emirates dirham (US$3.3 billion). The once empty Emirates coast is awash in
construction that has buried coral reefs, mangrove swamps and other wildlife zones. The
tidal lagoon here is one of the last such areas in the country, especially since the partial
bulldozing of a mangrove swamp on the east coast.
Richardson says a half-million birds stop at Khor al-Beidah every year. "The birds
don't have very much left," he says. "It's a very important site. It has the highest density
of winter migrants anywhere in eastern Arabia." The lagoon is a shallow tidal flat where
turquoise sea and orange sand form swirling arabesques, bordered by grassy desert dunes.
The protected waters are laden with small fish and crabs that lure the birds that nest in
adjacent mangroves and on a sandy barrier island.
Bird enthusiasts are running out of sites in the Emirates. Richardson says
hundreds of people visit Khor al-Beidah every year for the wildlife. He and other activists
long urged the government to protect the lagoon, arguing it is more valuable as an
ecotourism destination than as home to another luxury housing complex.
BirdLife International, an advocacy group, has designated Khor al-Beidah an
"important bird area" for hosting of 85 species, including the country's largest wintering
flock of crab plovers, one of the world's rarest shorebirds. The wetlands also are stopping
place for the Emirates' only flock of Great Knots, birds that migrate from nesting grounds
on the Siberian tundra. Developing the lagoon also could threaten endangered sea turtles
and dugongs, a manatee-like sea mammal, Richardson says.
The marina project is meant to resemble canal-side neighborhoods of Fort
Lauderdale, Florida, with residents able to walk to their boats and quickly cruise to open
sea, says Mark Amirault, Emaar's senior director of development. As is common at
similar luxury developments in Dubai, the homes will be targeted for sale to buyers from
all over the world, especially Britain and elsewhere in Europe, as well as India, Pakistan
and Arab countries. Emaar, established in 1997, is responsible for many of the projects
that have turned Dubai into the Middle East's growth hub, including Burj Dubai, planned
to be the world's tallest building when it opens in 2008. "What you're seeing in this
region is on par with development in North America 100 years ago," says Robert Booth,
Emaar's executive director. Jim Krane, Associated Press Writer (Source: Associated
Press Worldstream, 3 August 2005)

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October 2005


Status of Sirenian Bibliography Project. The database portions of Domning's
Bibliography and Index of the Sirenia and Desmostylia, published in 1996 in hard-copy
form, have been migrated from a DOS-based database manager to a Windows-compatible
one (Citation 8.2TM). However, I have been advised by a consultant to migrate it further,
to FileMaker ProTM, before publishing it to the Web. Attempts to do this last year were
unsuccessful, and at the moment the project has been dead in the water for over a year,
due in part to heavy and more urgent demands on my time (which have also precluded
updating the database with the last couple of years' worth of literature).
If this research tool is ever going to be available in interactive form on the
Internet, I am going to need the prompt assistance of someone well versed in database
software and design of a user interface preferably someone who can work with me in
person here in Washington. A great deal of that person's time would probably not be
needed. Some funds for reimbursement are available. If you are or know of such a source
of technical support, please contact me! Daryl Domning (Dept. of Anatomy, Howard
University, Washington, D.C. 20059; tel. 1-202-806-6026; )


New West African Manatee Conservation Project. Wetlands International
(Dakar) is launching a sub-regional project focused on West African manatee
conservation. This project is part of the Regional Program for the Protection of Coastal
and Marine Resources (PRCM). This conservation project, part of the species and habitat
conservation component, will be carried out by Wetlands International West Africa
Programme in cooperation with the PRCM partners: IUCN, WWF, and FIBA. The
intervention area is part of the PRCM area, from north Senegal to Guinea, but will be
extended to other countries in West Africa. This project, which is to continue for three
years, will be implemented in 2006.
The objectives of this West African Manatee Conservation Project are:
To carry out baseline surveys of the West African manatee along the West African
seaboard, complemented with a literature study;
To develop a regional network for the conservation management of the West African
To promote the manatee as a flagship species for wetlands, by virtue of the high level
of interest it generates, and for its importance in local customs and culture;
To develop an action plan for the West African manatee along the West African
seaboard, using results of surveys and a regional workshop;
To raise awareness of the West African manatee and wetlands along the West African
seaboard on national and international levels;
To develop a proposal for a second phase of the project.
In this first phase, Wetlands International needs to collect information (researches,
conservation projects, baseline surveys ...), but also experiences in manatee conservation
issues. This information will be useful to build up a base of scientific knowledge on the
West African manatee. Wetlands International needs also contacts (international,
national, regional level) to develop a network, involved in West African manatee

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October 2005

conservation. This network will help us to set up appropriate conservation measures in
the selected areas.
A flyer concerning the project's objectives and the expected results is available at
Wetlands, Dakar. If you desire further information, and if you would like to cooperate in
this Regional Project, please contact the Project Manager: Mame Dagou DIOP
(Wetlands International West Africa, BP 8060 Dakar Yoff, Senegal (tel: +221 8206478;
fax: +221 8206479; e-mail: / ; website:

Joint Action for Protecting the West African Manatee. The West African
manatee (Trichechus senegalensis) is the most threatened of all manatee species, and the
least studied. They are found in coastal marine and estuarine habitats, and in fresh water
river systems along the west coast of Africa from the Senegal River south to the Kwanza
River in Angola, including areas in Mauritania, Senegal, Gambia, Guinea-Bissau,
Guinea, Sierra Leone, Liberia, Ivory Coast, Ghana, Togo, Benin, Nigeria, Cameroon,
Equatorial Guinea, Gabon, Congo, D.R. of the Congo, Angola, Chad, Niger, Mali and
Burkina Faso.
The Regional Seas Programme (www.unep.org/regionalseas) of the United
Nations Environment Programme (UNEP-RSP), the Convention for Cooperation in
Protection and Development of the Marine and Coastal Environment (Abidjan
Convention; 1984) and the Secretariat of the Convention of Migratory Species (CMS)
with the support of the Government of Monaco are now joining forces to develop a
comprehensive Conservation Strategy for the West African Manatee throughout its entire
This initiative follows the UNEP and WWF joint effort in 2004 on the
development of a Conservation Strategy for the Dugong in the Western Indian Ocean
region, developed within the framework of the Eastern African Regional Seas program
(Nairobi Convention) [see: Eastern African Marine Ecoregion, 2004. Towards a Western
Indian Ocean Dugong Conservation Strategy: The status of Dugongs in the Western
Indian Ocean region and priority conservation actions. (WWF, UNEP)].
There is no international or regional mechanism for sirenian conservation, and
populations are incoherently covered by national and local laws and customs. The West
African Manatee is protected by national law in most countries in which it occurs,
although this is often ineffective. Currently, there is no comprehensive conservation plan
for the West African manatee.
The Abidjan Convention provides the framework for the protection and
conservation of the marine and coastal resources and environments in the West and Central
African region. This activity is supported by decision 7/5:3 of the Contracting Parties
requesting the Secretariat of the Abidjan Convention to establish new partnerships and
networks, e.g. for the conservation of migratory species of wild animals (including small
cetaceans and sirenians) and to combat invasive alien species in the marine and coastal
The West African manatee is included in Appendix II of CMS. Within the
legislative mandate of CMS, Recommendation 7.3 on Regional Coordination for
Sirenians of Central and West Africa (adopted by the Conference of Parties at its Seventh
Meeting in Bonn, 18-245 September 2002), encourages all parties in the distribution

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October 2005

range to consider the establishment of a MoU on these species and the implementation of
collaborative actions, notably through action plans. Such plans would consider the
particular characteristics of inland and marine waters.
Recommendation 7.3 further encourages the participation of all stakeholders,
including government agencies responsible for the conservation and management of
sirenians, as well as relevant non-governmental organizations and the international
scientific community. The Recommendation builds upon the result of a workshop in
Conakry, Guinea (8-12 May 2000), and it addresses the main concerns expressed by the
land-locked countries during this workshop.
The Abidjan Convention Secretariat will work collaboratively with the World
Wildlife Fund for Nature (WWF) in Senegal and Wetlands International (WI) in the
preparation of this Regional Status Report and Conservation Strategy. This project will
complement the Regional West African Manatee Conservation project of WI, which is part
of the Regional Programme for the Protection of Coastal and Marine Resources (PRCM) of
the IUCN, FIBA, WWF and WI.
Steps to a strategy. National status reports will be compiled into a
comprehensive Regional Status Report, which will be used to develop a Conservation
Strategy which will include identification of threats and recommendations for protection,
including a description of the roles of the different stakeholders involved in the protection
of the West African Manatee UNEP, Abidjan Convention, national authorities, CMS,
WWF, IUCN, WI, WCS and other relevant parties.
A Stakeholders Meeting will be organized to discuss the draft Regional Status
report and the Conservation Strategy. After endorsement by the stakeholders and final
review by all relevant parties, the Regional Status Report and Conservation Strategy will
be printed and published into an official publication.
The project will work closely with the national Focal Points of the Abidjan
Convention and the CMS Focal Points and for range states which are not a Party to any
of the conventions (Sierra Leone, Equatorial Guinea, Angola) the contact point will be
identified in the National Authority holding main responsibility in Manatee conservation.
The project is expected to start towards the end of 2005. Hanneke Van
Lavieren (Programme Officer, UNEP Regional Seas Programme, P.O. Box 30552,
Room T-235, Nairobi, Kenya; tel.: (254) 20 624052; fax: (254) 20 624 618; mobile: ++
(254) (0)735-267 939; e-mail: )


E. P. Green and F. T. Short (eds.). 2003. World Atlas of Seagrasses. Prepared by the
UNEP World Conservation Monitoring Centre. University of California Press, Berkeley:
xii + 298.

Comprising only a dozen genera and 50+ species, marine angiosperms form a
minuscule fraction of the world's flora, and are unimpressive to behold. Hence they get
little respect despite constituting one of Earth's most productive and economically
important biotopes, and one increasingly imperiled by human activities. This book seeks
to change that, by clarifying where seagrasses live, what they do for us, and what we are
doing to them.

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October 2005

This handsome, well-produced volume grew out of international workshops in
1998 and 2001, and includes contributions from 58 authors in 25 countries. A synthesis
of the distribution and status of seagrasses and their habitats, it describes their ecology,
summarizes studies to date, and focuses on threatened areas and on problems of
conservation and management.
The contents comprise a global overview of the present state of knowledge; 24
regional chapters (with references in endnotes to each chapter); and an index. Appendices
and sidebars include estimates of area of seagrass beds; species lists for almost 180
countries and territories; a list of protected areas; case studies on areas and habitats of
concern; and numerous colored maps showing species distribution and diversity. Other
illustrations comprise small green-and-white photographs, maps, and graphs throughout,
plus six color plates. One of the latter portrays fruits and flowers, but the poor photos
barely persuade that these are flowering plants. Seagrass inflorescences are admittedly
not much to look at, but I wish that at least the pink-and-white blossoms of Thalassia
hemprichii had been included to do them more justice.
"Atlas" here is meant literally. Emphasis is on where seagrasses live and how they
are faring, not taxonomy, morphology, or autecology, for which see works such as den
Hartog (1970) and Phillips and Mefiez (1988). Still, for the non-botanist like myself,
interested mainly in how seagrasses interface with other organisms, the distribution maps
and well-referenced accounts of ecology will make this a most useful resource.
It now remains to supplement these compendia with a careful phylogenetic
analysis of this polyphyletic group, using both morphological and molecular data.
Combined with the seagrasses' scanty fossil record, and reevaluation of their
biogeography using these updated distribution maps, this will start us toward the
reconstruction of their 100-million-year evolutionary history that this book (p. 10)
acknowledges as needed.

Literature Cited
den Hartog, C. 1970. The Seagrasses of the World. North Holland Publishing,
Phillips, R.C., and E.G. Mefiez. 1988. Seagrasses. Simithiiuian Contributions to the
Marine Sciences 34.

- Daryl P. Domning [reprinted from Quarterly Review of Biology 80(2): 256, June


The following abstracts are of papers and posters presented at the Ninth
International Mammalogical Congress, Sapporo, Japan, 31 July 05 August 2005:

Status of Sirenians An Introduction
J.E. Reynolds, III
Mote Marine Laboratory, 1600 Ken Thompson Parkway, Sarasota, FL 34239 USA (e-mail:

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October 2005

All five living species and subspecies of sirenians face a precarious future. The survival of some
local populations or stocks is especially tenuous in the face of small numbers of individuals, geographic
isolation, and significant anthropogenic threats. Despite some regional differences regarding specific
factors, the suite of threats facing sirenians is rather similar among the various groups, suggesting that
common solutions or mitigation options may also exist. Presentations at this symposium will focus on the
following topics, as available, for each sirenian species or subspecies: distribution, population size and
demography, life history attributes, mortality factors, current and future threats to survival, and potential
options for improved conservation. The goal of the symposium is to use the most current scientific
information to develop and justify revised, formal assessments of the status of manatees and dugongs

The Global Status of the Dugong
Helene Marsh
School of Tropical Environment Studies and Geography, James Cook University
The dugong has a large range spanning at least 37 countries and territories and includes tropical
and sub-topical waters from East Africa to Vanuatu between about 260 north and south of the Equator. A
review of the status of the dugong throughout its range was conducted in 2002 with the assistance of more
than 100 experts. The major threats were identified as fishing impacts especially gill and mesh nets (36
countries), habitat loss and degradation (at least 33 countries), hunting and poaching (at least 32 countries)
and vessel impacts (at least 13 countries). The review concluded that the dugong was at very high risk of
extinction in East Africa, India and Sri Lanka, Japan and Palau. The dugong's prospects are uncertain but
of concern in the Arabian Gulf, South-East Asia, East and south East Asia and the Pacific Islands, the
urban coast of Queensland and close to major Australian Indigenous communities, especially in Torres
Strait. The dugong is probably secure in the Red Sea and Western Australia. The habitat loss resulting
from the 2004 tsunami must have exacerbated the situation in India and Sri Lanka and parts of South East
Asia. On balance, this evidence supports the current listing as vulnerable to extinction at a global scale
based on reports of actual or potential levels of exploitation and the decline in area of occupancy (Criterion

The West African Manatee (Trichechus senegalensis): Status and Conservation
A. Kouadio 1, J.A. Powell 2, and J.E. Reynolds III3
'Wildlife Conservation Society (WCS), Coastal Biodiversity Conservation Project, 04 Bp 1240 Abidjan 04,
Ivory Coast (e-mail: akoi-k@hotmail.com); 2Wildlife Trust, Aquatic Conservation Program, 1601 3rd Street
S. Suite F, St. Petersburg, Florida 34240 USA; 3U.S. Marine Mammal Commission and Mote Marine
Laboratory, 1600 Ken Thompson Parkway, Sarasota, Florida, 34236 USA
The West African manatee (Trichechus senegalensis) occurs along the Atlantic coast of Africa
from the Senegal River to the Cuanza River of Angola. It has been recorded some 2,000 km inland; from
the Niger River from Koulikoro to Gao; in Lake Debo in Mali; and in Lakes L&r6 and Tr6nd in Chad. The
species exists in trans-boundary wetlands and appears to move freely between countries. The wide
distribution of T. senegalensis contrasts with the minimal information about the species' biology,
distribution, and status. The on-going West African manatee conservation project in C6te d'Ivoire,
supported by the Wildlife Conservation Society since 1986, represents the only noticeable and lasting
initiative in the whole continent; even there, assessments are based to a large extent on literature reviews
and personal communication. In many countries throughout its range, the species is legally protected, but
enforcement of such legislation has generally not been effective and the numbers appear to be declining in
many areas, due principally to subsistence hunting, incidental entanglement in fishing nets and
modification of habitat, as by dam construction and irrigation projects. The West African manatee is listed
as vulnerable to extinction (Category V) in the IUCNRed List, and it is listed in Annex II of the
Convention on the International Trade in Endangered Species of wild flora and fauna (CITES). Recently,
several countries have expressed their need for technical support to develop a manatee conservation
program. Although some countries fear that there may no longer be viable manatee populations in their
countries, others wish to protect their remaining manatees; such efforts are hampered by lack of knowledge
of where they occur. As the species clearly suffers diverse threats across its range, there is a strong need
for the development of a conservation action plan, better enforcement, and a precautionary listing.

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The Amazonian Manatee (Trichechus inunguis): Distribution and Status
Miriam Marmontel
Institute de Desenvolvimento Sustentivel Mamirauh and Wildlife Conservation Society, Brazil (email:
marmontel@mamiraua.org.br, mmarmontel@wcs.org)
Trichechus inunguis is endemic to the Amazon region. Its historical distribution remains
unchanged although in reduced numbers. It is found in Brazil, Colombia, Guyana, Ecuador, Peru and
Venezuela. Sympatry with the West Indian manatee may occur along a portion of the Brazilian coast.
Historically abundant, populations were depleted due to commercial hunting in past decades. Animals are
still hunted throughout the range for subsistence and some local trade. Habitat destruction and degradation
follow in importance of threat. Animals are more vulnerable when aggregated in restricted areas during the
dry season. Young animals may be accidentally captured in fishing gear. Calves are caught to bait the
mothers. Commerce of orphaned offspring is growing and reaching the capacity of holding facilities.
Captive births have occurred in Brazil. Reintroduction attempts in Brazil and Colombia have had partial
success. Enforcement of the legal protection in most countries is often inadequate and/or logistically
hampered. Due to the expanse of the basin, the turbidity of the waters and the species'cryptic habits, no
reliable population estimates exist. Captive studies have been carried out in Brazil since the 1980's but
studies on wild populations have been rare. The first long-term study of wild Amazonian manatees was
begun in 1993 around Mamiraua (Brazil) using radio telemetry. Tracking has identified migratory routes
between areas of floodplain and terra firma. Future work will include sonar-based assessments and GIS
modeling-based distribution. The species is listed as vulnerable to extinction in the IUCN Red List, and in
Appendix I of CITES. Brazil produced an action plan for aquatic mammals, including Amazonian
manatees, but Colombia is the only country so far to produce a national action plan specific to manatees.
There is a strong need for a collaborative regional strategy to protect the species.

Population Status of the Florida Manatee (Trichechus manatus latirostris): Application to IUCN Red
List Status
C. J. Deutsch' and M. C. Runge2
'Florida Fish and Wildlife Conservation Commission (FWC), Fish and Wildlife Research Institute,
Gainesville, Florida, USA (e-mail: Chip.Deutsch@MvFWC.com); 2U. S. Geological Survey, Patuxent
Wildlife Research Center, Laurel, Maryland, USA
The Florida manatee inhabits coastal waters, estuaries and rivers of the southeastern United States
but is found year-round only in Florida. The highest count obtained during range-wide surveys was 3300
manatees in 2001; this is presumed to be a minimum count, but the fraction detected is unknown. The
subspecies is comprised of four subpopulations that differ in size, demographic rates, habitats, and major
threats. Population growth rates were estimated by Runge and colleagues (i" '14) using a stage-based
model that integrated mark-recapture estimates of survival and reproduction based on individual photo-
identification. From 1990-1999 the two smaller subpopulations (15% of highest count) have shown robust
growth, while the Atlantic subpopulation (44%) may have remained stable, and the Southwest
subpopulation (41%) may have declined. Human-related mortality, primarily from watercraft collisions,
accounted for at least 48% of adult deaths since 1986 and is a significant factor inhibiting population
growth. To address IUCN listing criteria relating to the probability of future population decline or
extinction, the FWC conducted a population viability analysis. The PVA simulated plausible scenarios that
incorporated future threats, including expected declines in carrying capacity through loss of warm-water
refugia, potential increases in mortality associated with projected human population growth, and natural
catastrophic mortality events (e.g., red tide). In several scenarios there was a reasonable probability of
substantial population decline (>20% or >50%) over time (the next two or three generations, respectively),
suggesting that this subspecies meets the IUCN Red List criteria for "endangered." Despite concerns about
recent stagnant growth, continued human-caused mortality, and emerging threats, we acknowledge positive
strides towards recovery. The population has apparently grown since its federal listing >30 years ago, and
management actions have resulted in expanded boat speed zones in manatee habitats, no-entry zones at
important warm-water sites, and improved habitat (water quality and seagrass) in some estuaries.

Conservation Status of the Antillean Manatee (Trichechus manatus manatus) in the Wider Caribbean
Caryn Self-Sullivan 1, 2 and Antonio A. Mignucci-Giannoni 3

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1 Department of Wildlife and Fisheries Sciences, Texas A&M University, College Station, TX 77843-
2258; 2 Sirenian International, 200 Stonewall Drive, Fredericksburg, VA 22401-2110, email:
caryn(tsirenian.org; 3Caribbean Stranding Network, PO Box 361715 San Juan, Puerto Rico 00936-1715,
email: mignucci @caribe.net
The Antillean manatee (Trichechus manatus manatus) occurs in riverine and coastal systems
throughout the Wider Caribbean region, where it is recognized as a priority species of regional concern and
is protected by national and international laws. One of two West Indian (T. m. ) subspecies, the status of
Antillean manatees was assessed as "vulnerable" by the IUCN Species Survival Commission's Sirenia
Specialist Group (SSC/SSG) in 1996 (VU A2d ver.2.3). To update this assessment, we compiled data
gathered through an extensive literature review and personal communication with over 50 scientists
representing expertise on manatees in 39 countries from the Caribbean Sea, Central America, and South
America. Our assessment excluded the Florida manatee (T. m. latirostris) population in North America.
Although these two sub-species have been recognized since 1934, recent mtDNA research suggests three
distinct T. m. groupings and possible re-evaluation of the taxonomy. West Indian manatee populations
occur in at least 19 of the 39 countries assessed, with rare sightings in additional countries. However,
suitable habitat and manatee distribution are discontinuous within its range. Major threats to survival
continue to include habitat degradation and loss, hunting, accidental mortality, pollution, and human
disturbance. Status at the population level varies from vulnerable, to endangered, to extinct, with
population numbers estimated to range on the order of 10' to 103; the largest population (outside of
Florida) is reported from Belize, for which some estimates range as high as 1000 or more individuals. In
most of the countries with extant populations, some effort has been made to protect manatees through
governmental and/or non-governmental organizations. In a few countries, including Mexico, Belize,
Puerto Rico, and Brazil, efforts have been extensive and include species management and recovery plans,
site specific and country-wide surveys, remote sensing projects, health assessments, habitat protection,
educational outreach programs, stranding networks, and rehabilitation facilities.

Status and Threats to the Dugong of Okinawa, in Japan
Shin-ichi Hanawa
WWF-Japan, Tokyo, 105-0014, Japan (e-mail: kliun\\ \\ \\f oi ip)
In Japan at present, Dugong (Dugong dugon) is observed only at Okinawa Island which is the
northernmost limit of the distribution. A local population of Dugong is confined to a very small area of
distribution, isolated from other populations, very few in number, and very much in danger of extinction.
Okinawa's Dugong is one of the critically endangered species and a natural monument in Japan. One of the
serious problems is a plan to construct a joint US Marine Corps and Japanese public airport to replace
Futenma air station of USMC. The basic plan is to landfill a coral reef and seagrass area about 1 kilometer
offshore of Henoko, Nago City and construct a 2,500 meter long, 730 meter wide airport on top of the
landfill. The construction site is located in the central portion of the Dugong's habitat in Okinawa Island. It
would not only bisect the habitat, but would also destroy seagrass beds that function as important feeding
grounds, coral reefs that serve as resting sites, and canals between both sites for the Dugong. Japanese
Government is continuing the drilling survey in the habitat of Dugong without EIA, and the EIA of the
airport is going on without alternatives in spite of the IUCN recommendations (Amman 2000, Bangkok
2004). United States Government insists that the responsibility of the airport construction belongs to
Japanese Government. Another serious problem is incidental bycatch. Corpses of Dugong that appear to
have been caught in fishing nets occasionally stranded ashore. In the 1980s there were five corpses, nine in
the 1990s and three in 2000. Red soil runoff from the land is also damaging the seagrass beds and the coral
reef environment. Therefore appropriate and urgent prevention measures are required for the survival of
Okinawa's Dugong. We are continuing conservation activities such as public awareness, signature
campaign, lobbying for the Diet and the government, symposium with scientists, and others based on the
action plan made by NGOs for the conservation of Dugong in Okinawa.

Status and Conservation of the Manatee (Trichechus manatus) in Mexico
Alejandro Ortega-Argueta' and Benjamin Morales-Vela2
'University of Veracruz, Mexico/School of Natural and Rural Systems Management, University of
Queensland, Gatton Campus, Gatton 4343, Qld. Australia. Email: a.ortega@uqg.edu.au,
aortegarg(iyahoo.com.mx; 2El Colegio de la Frontera Sur, unidad Chetumal, Quintana Roo, Mexico/US

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October 2005

Geological Survey, Sirenia Project, Gainesville, FL, USA. Email: benj amin@ecosur-qroo. mx,
benjamin morales (Zusgs.gov
The knowledge of the manatee population in Mexico is still young and fragmented. The species is
locally considered endangered and federally protected by Mexican laws since 1921 against any
consumptive use. The manatee inhabits the southern coasts of the Gulf of Mexico and the Yucatan
Peninsula. Manatees use primary riverine and estuarine ecosystems in the Gulf of Mexico, and marine and
estuarine ecosystems in the Caribbean Sea. In the last decade, ecological research has been made mainly in
Quintana Roo, Tabasco and Veracruz States. Only in the Yucatan Peninsula are there data available about
manatee distribution, abundance, and population trends. The abundance in the north area of the Yucatan
Peninsula is very low but increases in Quintana Roo State where there are around 150 to 200 manatees. In
the same region, local movements of manatees radio tagged have been monitored since 1994 and genetic
studies were started in 1997. A health assessment project is still going too. There are no data of the same
quality for the other states. Habitat degradation and destruction likely is the most significant threats. This is
a result of inappropriate coastal, urban and tourism development, wetlands destruction for cattle-rising and
agriculture, oil and gas exploitation industry, dam construction, and fishery and port industries. On the
other hand, poaching is still present in some rural areas of Veracruz, Tabasco and Campeche States as a
traditional use of the species by hunters and fishermen. The Mexican Government created a Manatee
Advisory Committee in 1997, composed of experts, academics, private organizations, volunteers and
environmental authorities to coordinate the protection and recovery of the species. This committee also
coordinates the conservation initiatives in accord with the National Recovery Plan released in 2001.
Currently, there are 23 manatees in captivity, which are maintained in aquariums, private and public parks
and other local facilities. Many of the manatees are held in semi-captive facilities for reintroduction. In
December 2004 the first manatee was born in captivity in Mexico at the Veracruz Aquarium. Among the
local conservation priorities are: reinforcement of federal laws to protect the manatee and its habitats,
diminishing of the manatee mortality caused by hunting, gillnets and ship strikes, updating a management
plan for the treatment and release of manatees from captivity, and research on the manatee distribution and
abundance in many unevaluated areas in the country.

Grazing of Dugong (Dugong dugon) and Seagrass Recovery in Okinawa, Japan
K. Ikeda1'2 and M. Yonedal,2
'Kyusyu University, 4-2-1 Ropponmatsu, Chuo-ku, Fukuoka, Japan; 2Japan Wildlife Research Center,
Tokyo 110-8676, Japan (e-mail: kikcdaff j ic Ol ip*
Dugong (Dugong dugon) is a marine mammal that feeds on seagrass in shallow water.
Relationship between dugong and seagrass was studied mainly in Australia, however, few studies have
been done in Japan. Dugong is one of the most endangered species in Japan and it is found only around
Okinawa Island. Seven species of seagrass (Cymodocea rotundata, C. serrulata, Halodule pinifolia, H.
uninervis, Syringodium isoetifolium, Halophila ovalis, Thalassia hemprichii) are fed by dugong (Aketa,
2003) out of 10 identified seagrass species around Okinawa Island. Seagrass biomass that dugong intakes,
grazing efficiency, and seagrass recovery after grazing were measured in this study. Kayo area,
northeastern part of Okinawa island, was selected as a study site. All 7 species fed by dugong were found
in this seagrass bed. Study plots were established in 3 seagrass meadows dominated by T. hemprichii, C.
rotundata, and H. uninervis respectively. In order to estimate grazing biomass, seagrass leaves, rhizomes
and roots were excavated by 15cm x 15cm quadrats (n=5) within dugong feeding trenches every month
from January to June 2005. The seagrass biomass dugong trench in each plot (n=5) was also measured.
For comparison of the seagrass recovery, experimental trenches that imitated dugong trenches (3m x 20 cm,
leaves, rhizomes and roots completely excavated) were established in T. hemprichii dominant seagrass
meadow. The recovered seagrass in the experimental trenches was also weighed every month. Biomass of
the seagrass was 158.3+45.7g.d.w/m2, 206.6+51.4g.d.w./m2, 54.6+18.3g.d.w./m2, and dugong grazed
11.1%, 29.0%, 42.7% of total biomass, and 19.6%, 64.8%, 63.2% of above-ground biomass in seagrass
meadows dominated by T. hemprichii, C. rotundata, and H. uninervis respectively. Recovery of seagrass
in dugong trenches was rapid, while that in experimental trenches was very slow. Only H. ovalis showed
prompt recovery in experimental trenches.

Seasonal Fluctuations in Seagrass Epiphyte Abundance Recorded in the Stable Isotope Composition
of Manatee Whiskers
M. Clementz', N. Tuross2, V. Paul', and T. Pitchford3

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October 2005

'Smithsonian Marine Station at Fort Pierce, 701 Seaway Drive, Fort Pierce, Florida 34949, USA (e-mail:
clementz (sms.si.edu); 2Anthropology Department, Harvard University, Cambridge, Massachusetts, USA;
3Marine Mammal Pathobiology Laboratory, St. Petersburg, FL USA
Seagrass epiphytes are major contributors to overall productivity within seagrass communities.
Extremely high epiphyte loads, however, can have detrimental impacts on community health and serve as
ecological indicators of eutrophication or environmental stress within ecosystems. Anthropogenic factors
(i.e., nutrient dumping, freshwater fluxes, dredging) can spark these algal blooms and monitoring epiphyte
growth could provide a measure of human impact on coastal communities. Yet, direct measurement of
epiphyte abundance is time-consuming and difficult to conduct over large study areas. Here we explore the
use of incremental stable isotope signals (613C, "1N) preserved in manatee whiskers as a record of seasonal
epiphyte abundance in seagrass communities. The Indian River Lagoon (IRL) was chosen as a study site
because manatees are abundant in this region, seagrass meadows are extensive, and prior research has
documented seasonal oscillations in epiphyte abundance. Seagrass and epiphyte samples were collected
every three months for a period of one year at multiple sites within the IRL. Seagrass samples were
consistently "C-enriched and "N-depleted relative to associated epiphytes and isotopic differences were
typically >5%o for both elements. Multiple perioral whiskers were collected from 5 manatees that had died
within the IRL. Whiskers were subsampled in -0.5 mm increments for 613C and 615N analysis and
averaged 4 cm in length, yielding -60 samples per whisker. Values exhibited cyclical trends for both
carbon and nitrogen with ranges of >2%o within a single whisker. Peak 615N values typically coincided
with a drop in 613C values that matched the winter-spring season of abundant epiphyte growth in the IRL.
These results suggest that epiphyte productivity may be a more important food source for IRL manatees
than previously thought and that stable isotope values in manatee tissues may provide a novel record of the
ecological health of coastal communities.


Anonymous. 2005. Dugong conservation in Tanzania. Mar. Pollut. Bull. 50(5): 492.

Andre, J., E. Gyuris, and I.R. Lawler. 2005. Comparison of the diets of sympatric
dugongs and green turtles on the Orman Reefs, Torres Strait, Australia. Wildlife
Research 32: 53-62.

Astibia, H., A. Payros, X. Pereda Superbiola, J. Elorza, A. Berreteaga, N. Etxebarria, A.
Badiola, and J. Tosquella. 2005. Sedimentology and taphonomy of sirenian
remains from the Middle Eocene of the Pamplona Basin (Navarre, western
Pyrenees). Faces 50(3-4): 463-475.

Badrudeen, M., P. Nammalwar, and K. Dorairaj. 2004. Status of sea-cow Dugong dugon
(Miller) along the southeast coast of India. Jour. Bombay Nat. Hist. Soc. 101(3):
Brant, J.G., and C. Jones. 2005. Annotated checklist of marine mammals of Texas.
Occas. Papers, Mus. Texas Tech Univ. No. 244: 1-4.

Domning, D.P. 2005. Fossil Sirenia of the West Atlantic and Caribbean region. VII.
Pleistocene Trichechus manatus Linnaeus, 1758. Jour. Vertebrate Paleontology
25(3). [Describes a new subspecies of Trichechus manatus from the Late
Pleistocene of the southeastern USA.]

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October 2005

Fitzgerald, E.M.G. 2005. Holocene record of the dugong (Dugong dugon) from Victoria,
southeast Australia. Mar. Mamm. Sci. 21(2): 355-361.

Flewelling, L.J., J.P. Naar, J.P. Abbott, D.G. Baden, N.B. Barros, G.D. Bossart, M.-Y.D.
Bottein, D.G. Hammond, E.M. Haubold, C.A. Heil, M.S. Henry, H.M. Jacocks,
T.A. Leighfield, R.H. Pierce, T.D. Pitchford, S.A. Rommel, P.S. Scott, K.A.
Steidinger, E.W. Truby, F.M. Van Dolah, and J.H. Landsberg. 2005. Red tides
and marine mammal mortalities. Nature 435(7043): 755-756.

Furusawa, H. 2005. Evolution of the North Pacific Sirenia (Hydrodamalinae) and their
paleoenvironment. Fossils (Palaeontological Soc. Japan) No. 77: 29-33.

Hauxwell, J., T.K. Frazer, and C.W. Osenberg. 2004. Grazing by manatees excludes both
new and established wild celery transplants: implications for restoration in Kings
Bay. Jour. Aquat. Plant Management 42: 49-53.

Hines, E.M., K. Adulyanukosol, and D.A. Duffus. 2005. Dugong (Dugong dugon)
abundance along the Andaman coast of Thailand. Mar. Mamm. Sci. 21(3): 536-

Inuzuka, N. 2000. Preliminary report on the evolution of aquatic adaptation in
desmostylians (Mammalia, Tethytheria). Oryctos 3: 71-77.

Jimenez Perez, I. 2003. Los manaties del Rio San Juan y los Canales de Tortuguero:
ecologia y conservaci6n. Managua, Araucaria: 1-87.

Jimenez Perez, I. 2005. Development of predictive models to explain the distribution of
the West Indian manatee Trichechus manatus in tropical watercourses. Biol.
Conserv. 125: 491-503.

Kendall, S., and D.L. Orozco. 2003. El arbol de los manaties: caza, concertaci6n y
conservaci6n en la amazonia colombiana. In: C. Campos-Rozo and A. Ulloa
(eds.), Fauna socializada: tendencies en el manejo participativo de la fauna en
America Latina. ?Bogota, Fundaci6n Natura, MacArthur Foundation, and
Institute Colombiano de Antropologia e Historia: 215-237.

Lanyon, J.M., T. Johns, and H.L. Sneath. 2005. Year-round presence of dugongs in
Pumicestone Passage, south-east Queensland, examined in relation to water
temperature and seagrass distribution. Wildlife Research 32(4): 361-368.

Linares, O.J., and B. Rivas A. 2004. Mamiferos del sistema deltaico (delta del Orinoco-
Golfo de Paria), Venezuela. Memoria de la Fundacion La Salle de Ciencias
Naturales 2004 ("2003"), 159-160: 27-104.

Parente, C.L., J.E. Vergara-Parente, and R.P. Lima. 2004. Strandings of Antillean
manatees, Trichechus manatus manatus, in northeastern Brazil. Latin Amer. Jour.
Aq. Mamms. 3(1): 69-75.

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October 2005

Raloff, J. 2005. Toxic surfs: homing in on an alga's threat and therapeutic promise.
Science News 168(4): 56-58.

Siciliano, S., and S. M. S. Franco. 2005. Catalogo da Colecdo de Mamiferos Aquaticos
do Museu Nacional (Rio de Janeiro). [Includes data on manatee specimens. PDF
available from Salvatore Siciliano, .]

Smith, K., and R. Mezich. 2004. Managing natural aquatic plant communities in Manatee
Springs: the effects of manatee grazing, nutrient pollution and flooding. Aquatics
26(2): 12-20.

(NOTE: Not all of these sites have been visited recently by your Editor, and some may
no longer be active, or their addresses may have changed.)

Belize Coastal Zone Management Authority & Institute's Manatee Research Program:

The Call of the Siren (Caryn Self Sullivan):

Caribbean Environment Programme, Regional Management Plan for the West Indian

Caribbean Stranding Network:

Columbus (Ohio) Zoo manatee exhibit: manateecoast/index.html>


Dugong necropsy manual (available for downloading): corp_site/info_services/publications/research_publications/rp64/index.html>

Florida Fish and Wildlife Conservation Commission, Bureau of Protected Species

Florida Fish and Wildlife Conservation Commission, Florida Marine Research Institute
(Florida manatee mortality data):

Friends of the Manatee Association, Manaus & Balbina, Brazil: dopeixe-boi.org.br/english/Ing_index2.htm> [Includes a bibliography of INPA aquatic
mammal project publications and abstracts]

Fundaci6n Salvemos al Manati de Costa Rica:

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October 2005

Great Barrier Reef dugongs: publications/dugong/index.html>

IBAMA manatee project, Brazil:

Jacksonville University (Florida) Manatee Research Center Online:

Manatee neuroanatomy:

"Manatee Watchers" Internet discussion list: /MANATEE>

News clippings on Florida manatees: enmanate.htm>

Philippines Dugong Research and Conservation Project: com.ph>

Save the Manatee Club:

Sea World of Florida:

SEMARNAP, Secretaria de Medio Ambiente, Recursos Naturales y Pesca, Mexico:

Sirenews (texts of current and recent issues): snews.htm>; (for archive of most older

Sirenia Project, U.S. Geological Survey: or www.nfrcg.gov/sirenia>

Sirenian International, Inc.: [Includes a bibliography of
sirenian literature, and an archive of Sirenews issues.]

Smithsonian Institution sirenian bibliography: nmnh/sirenia.htm> [This is a relatively short bibliography, compiled by Joy Gold, that
provides a very good introduction to both the technical and the popular literature.]

Steller's sea cow: < http://www.hans-rothauscher.de/steller/steller.htm>. This site also
includes a searchable database of museum collections worldwide that contain bones of
Hydrodamalis gigas: . See
also the website [in Finnish] of Dr. Ari Lampinen, Univ. of Jyvaskyla, Finland:

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October 2005

Trichechus senegalensis skull: senegalensis/>. [CT imagery of an African manatee skull and mandible, viewable as
individual thin slices, 3-D rotational movies, and slice movies. Excellent detail!]

West African manatee in Chad (Jonathan H. Salkind): manatee-index.html >

Xavier University manatee web site (Midwest Manatee Research Program; Chuck


Diana Weinhardt, 2311 Woody, Pearland, Texas 77581, USA


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