mongabay.com logo About  |   Contact  |  Mongabay on Facebook  |  Mongabay on Twitter  |  Free newsletter
Rainforests | Tropical fish | Environmental news | Blog | For kids | Madagascar | Photos | Non-English languages | Tropical Conservation Science
SHARE:
print


Massive population of rare Irrawaddy dolphins discovered in Bangladesh
Jeremy Hance
mongabay.com
March 31, 2009





The Wildlife Conservation Society (WCS) has discovered an unknown population of the rare Irrawaddy dolphin in Bangladesh numbering 6,000 individuals. The dolphins were found in the freshwater areas of the Sundarbans mangrove forest. Prior to this discovery, the largest known populations of Irrawaddy dolphins numbered only in the hundreds.

“This discovery gives us great hope that there is a future for Irrawaddy dolphins,” said Dr. Brian Smith, the study’s lead author. “Bangladesh clearly serves as an important sanctuary for Irrawaddy dolphins, and conservation in this region should be a top priority.” The discovery of the new population was announced today at the First International Conference on Marine Mammal Protected Areas in Maui, Hawaii.


The irrawaddy dolphin. Photo courtesy of WCS.
Threatened by fishermen's nets and climate change, the Irrawaddy dolphins are labeled as Vulnerable in Bangladesh and India, but Critically Endangered in Laos, Malaysia, Myanmar, the Philippines, and Thailand by the IUCN Red List. The current total population of dolphins is unknown.

The study announcing the find, published in the Journal of Cetacean Research and Management, highlights that despite the discovery of a new population, the Irrawaddy dolphin is still threatened. Bringing this point home was the discovery of two dolphins which had drowned due to entanglement in fishermen's nets during the survey.

Other threats to the Irrawaddy dolphin include declining freshwater due to human use and climate change, which is threatening to raise the sea-level and inundate local freshwater systems. The Ganges River dolphin, which overlaps the same habitat as the Irrawaddy dolphin, is threatened by the same factors.

Freshwater dolphins of Southeast Asia have garnered additional attention since the extinction of the baiji, or Yangzte river dolphin, which disappeared from China's waters in 2006 despite conservation efforts. The baiji went extinct due to a large variety of threats, including dam construction on the river, entanglement in nets, habitat loss, pollution, speedboats, noise pollution, and illegal electrofishing which employs electricity to stun fish.







Related articles

U.S., Mexico, Canada pledge to save the vaquita from extinction
(10/30/2008) The United States, Mexico, and Canada will work together to conserve the vaquita, the world's smallest, and most endangered, species of cetacean.


The extinction of the baiji a 'wake-up call' to conserve vaquita and other cetaceans
(08/25/2008) In December of 2006 an expedition spent six weeks surveying the Yangtze River in China for one of the world's rarest cetaceans, the baiji. Also known as 'The Goddess of the Yangtze' the shy river-dolphin had roamed the river for millions of years locating fish with echolocation. The survey came back empty-handed without a spotting a single dolphin. Dr. Jay Barlow, a member of the surveying team, described his emotions on the expedition's findings in an interview with Mongabay.com: "I was stunned. I knew the species was in trouble, but I did not think they were already gone. We really had not seen the extinction of a large mammal species in 50 years, so we grew complacent."


Rare Chinese river dolphin sighting in doubt
(09/01/2007) A prominent researcher is skeptical of last week's reported sighting of the baiji, the Chinese river dolphin declared extinct earlier this year, according to the New York Times. The sighting near Tongling city in Anhui Province -- widely reported in Chinese and Western media -- was captured on video.


"Extinct" baiji river dolphin spotted alive in China
(08/29/2007) An "extinct" baiji has been spotted alive in the Yangtze River, reports Chinese state media.


The news of extinction: western media's response to the demise of the Baiji
(04/01/2007) The news came and went with an alacrity that I found alarming, almost jolting. I waited for weeks, faithfully; I could not believe that the initial announcement would be followed by nothing but silence on the issue, no rationalizations, no opinions, no discussions, no outpourings of grief. Just silence.






CITATION:
Jeremy Hance
mongabay.com (March 31, 2009). Massive population of rare Irrawaddy dolphins discovered in Bangladesh. http://news.mongabay.com/2009/0331-hance_irrawaddy.html


Tags:
marine mammals wildlife animals happy-upbeat environmental environment green jeremy hance conservation bangladesh Fishing asia endangered species saving species from extinction

print



Environmental news index | RSS | News Feed | Twitter | Home


Advertisements:





Mongabay Store
Wildlife of Madagascar T-shirt
Wildlife of Madagascar T-shirt
Bold and Dangerous - Pygmy tyrant t-shirts
Bold and Dangerous - Pygmy tyrant
Love me before I'm gone - Gladiator frog t-shirts
Love me before I'm gone - Gladiator frog
Licking this frog may make you crazy t-shirts
Licking this frog may make you crazy




DON'T LIKE ADS? Become a mongabay supporter


WEEKLY NEWSLETTER
Email:


RECENT FEATURES
As Amazon deforestation falls, food production risesAs Amazon deforestation falls, food production rises
Biggest environmental news stories of 2011Biggest environmental news stories of 2011
The year in review for rainforestsThe year in review for rainforests
Our top nature pictures of 2011Our top nature pictures of 2011


POPULAR PAGES
Rainforests
Rain forests
Amazon deforestation
Deforestation
Deforestation stats
Why rainforests matter
Saving rainforests
Amazon rainforest
Congo rainforest
Deforestation data
Rainforest canopy

Special sections
New Guinea
Finding new species
Sulawesi
Madagascar
Borneo
REDD

News
Most popular articles
Worth saving?
Forest conservation
Cell phones in Africa
Seniors helping Africa
Saving orangutans in Borneo
Palm oil
Amazon palm oil
Future of the Amazon
Cane toads
Dubai environment
Investing to save rainforests
Visiting the rainforest
Biomimicry
Defaunation
Blue lizard
Extinction debate
Extinction crisis
Industrial deforestation
Save the Amazon
Rainforests & REDD
Brazil's Amazon plan
Avatar story
Amazon ranching

News topics
Amazon
Biofuels
Brazil
Carbon Finance
Conservation
Climate Change
Deforestation
Energy
Happy-upbeat
Indonesia
Interviews
Oceans
Palm oil
Rainforests
Wildlife
MORE TOPICS



Non-English Sites
Chinese
French
German
Indonesian
Italian
Portuguese
Spanish
Other languages

Nature Blog Network







Photos
Brazil photos
Brazil

China photos
China

Colombia photos
Colombia

Costa Rica photos
Costa Rica

Deforestation photos
Deforestation

Gabon photos
Gabon

India photos
India

Indonesia photos
Indonesia

Kenya photos
Kenya

Madagascar photos
Madagascar

Peru photos
Peru

Peru photos
Rainforest



ABOUT
Mongabay.com seeks to raise interest in and appreciation of wild lands and wildlife, while examining the impact of emerging trends in climate, technology, economics, and finance on conservation and development (more)

Help support mongabay.com when you buy from Amazon.com


CALENDARS



BOOKS BY MONGABAY AUTHORS
Rainforest book for kids Conservation in an age of mass extinction


FREE WEEKLY NEWSLETTER



HIGH RESOLUTION PHOTOS / PRINTS








Copyright mongabay 2010

Carbon dioxide (CO2) emissions generated from mongabay.com operations (server, data transfer, travel) are mitigated through an association with Anthrotect,
an organization working with Afro-indigenous and Embera communities to protect forests in Colombia's Darien region.
Anthrotect is protecting the habitat of mongabay's mascot: the scale-crested pygmy tyrant.