Chinese River Dolphin

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iChinese River Dolphin

Conservation status

Critically endangered (CR)

Scientific classification

Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Subclass:	Eutheria
Order:	Cetacea
Suborder:	Odontoceti
Superfamily:	Platanistoidea
Family:	Lipotidae
Genus:	Lipotes
Species:	L. vexillifer

Binomial name

Lipotes vexillifer
Miller, 1918

The Chinese River Dolphin (Lipotes vexillifer) is a freshwater dolphin found only in the Yangtze River in China. The superfamily of river dolphins include also the Boto and the La Plata Dolphin. Other names for Lipotes include Baiji (白鱀 Pinyin: báijì), Beiji, Pai-chi (Wade-Giles), Whitefin Dolphin, Whiteflag Dolphin, Yangtze Dolphin, and Yangtze River Dolphin. it is nicknamed "the Goddess of the Chang Jiang (Yangtze)" (長江女神) in China.

1 Early history
2 The chronology of the species' rapid decline
3 Conservation
4 Three Gorges Dam
5 See also
6 References
7 External links

[edit] Early history

Fossil records indicate that the dolphins migrated from the Pacific to the Yangtze River 20,000 years ago. The dolphins are described in the Han Dynasty dictionary Erya. it is estimated that there were 5,000 Chinese River Dolphins at that time. In 1978, the Chinese Academy of Sciences established the Freshwater Dolphin Research Centre (淡水海豚研究中心) as a branch of the Wuhan Institute of Hydrobiology.

[edit] The chronology of the species' rapid decline

1979: The People's Republic of China declares Baiji endangered
1983: National law declaring hunting Baiji illegal
1986: Population at 300
1990: Population at 200
1997: Population at less than 50 (23 found)
1998: 7 found

Its current population is difficult to estimate, but it is thought that there are at least thirteen individuals still alive. Needless to say, that is an extremely low number and is therefore the most endangered cetacean in the world, according to the Guinness Book of World Records. A captive specimen, a male named Qiqi (淇淇), was located at the Wuhan Institute of Hydrobiology from 1980 to July 14, 2002. Qiqi was discovered by a fisherman in Dongting Lake, and later became the sole resident of Baiji Dolphin Aquarium (白鱀豚水族馆) beside East Lake. There was a later captive, which died after living a year (1996 to 1997) in the Shishou Semi-natural Baiji Dolphin Sanctuary (石首半自然白鱀豚保护区) that had been empty since 1990. A female was found in Chongming Island near Shanghai in 1998, but she did not eat any of the provided food and starved to death within a month.

The November/December 2006, the Yangtze Freshwater Dolphin Expedition (长江淡水豚类考察) was unable to find any individuals, raising the suspicion that the species might be extinct (the last sighting was in 2005^{[citation needed]}. The expedition could not rule out that the failure to locate the individuals was due to the poor water and weather condition, however, but given that neither the slightest sight record nor vocalizations were collected^{[citation needed]}, the species' prospects seem bleak indeed.

[edit] Conservation

The Baiji Dolphin Conservation Foundation of Wuhan (武汉白鱀豚保护基金), the first Chinese aquatic species protection organization, was founded in December 1996. The Foundation has gathered 1,383,924.35 CNY (about 10,034.02 USD) and have spent the financial resources on in vitro cell preservation and maintenance of the Chinese River Dolphin facilities, including the 1998-flooded Shishou Sanctuary.

The Xinhua News Agency announced on 4 December 2006 announced that no Chinese River Dolphins were detected in a survey of the Yangtze River conducted by 30 researchers. it is possible that the species has gone extinct, which would make it the first unequivocally accepted whale species to become extinct due to human action ^[1] (some extinct baleen whale populations may or may not have been distinct species). On the 10th of December it was announced that the species were extinct

[edit] Three Gorges Dam

The introduction of the Three Gorges Dam has irrevocably altered the habitat of the Chinese River Dolphin. Scientists however, hope to save the Dolphins with a plan that involves moving some to a nearby lake. If successful the plan would be to re-introduce the species into the Yangtze when the prospect of survival there increases.