Nilssonia nigricans

Taxonomy

Assessment Information

Geographic Range

Habitat and Ecology

Conservation Actions

Bibliography

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Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
ANIMALIA	CHORDATA	REPTILIA	TESTUDINES	TRIONYCHIDAE

Scientific Name:

Nilssonia nigricans

Species Authority:

(Anderson, 1875)

Common Name/s:

English

–

Black Soft-shell Turtle, Black Softshell Turtle

Synonym/s:

Aspideretes nigricans (Anderson, 1875)

Trionyx nigricans Anderson, 1875

Assessment Information [top]

Red List Category & Criteria:

Extinct in the Wild ver 3.1

Year Assessed:

2002

Assessor/s:

Asmat, G.S.M

Reviewer/s:

Rhodin, A. & Behler, J. (Tortoise & Freshwater Turtle Red List Authority)

Justification:
A. nigricans is known to occur only in a single artificial temple pond near Chittagong, Bangladesh. No specific observation of this species has been made outside of this pond.

History:

2000	–	Critically Endangered
1996	–	Critically Endangered (Baillie and Groombridge 1996)
1994	–	Rare (Groombridge 1994)
1990	–	Rare (IUCN 1990)
1988	–	Rare (IUCN Conservation Monitoring Centre 1988)
1986	–	Rare (IUCN Conservation Monitoring Centre 1986)
1982	–	Rare

Geographic Range [top]

Range Description:	This species is only known to exist in an artificial pond (Baizid Bostami shrine) near Chittagong, Bangladesh. In 1912, its distribution was given as in between the Brahmaputra river system and the Arakan streams, but this may have been an incorrect assumption based on the distributions of A. gangenticus, A. leithi, and A. hurum (Asmat, pers. comm).
Countries:	Regionally extinct: Bangladesh

Habitat and Ecology [top]

Habitat and Ecology:	Semi-aquatic
Systems:	Terrestrial; Freshwater

Conservation Actions [top]

Conservation Actions:	It is listed on CITES Appendix I.

Conservation Actions:

It is listed on CITES Appendix I.

Bibliography [top]

	Baillie, J. and Groombridge, B. 1996. 1996 IUCN Red List of Threatened Animals. International Union for Conservation of Nature, Gland, Switzerland. Groombridge, B. 1982. The IUCN Amphibia-Reptilia Red Data Book, Part 1: Testudines, Crocodylia, Rhynocehapalia. IUCN, Gland, Switzerland. Groombridge, B. (ed.). 1994. 1994 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland and Cambridge, UK. Hilton-Taylor, C. 2000. 2000 IUCN Red List of Threatened Species. IUCN, Gland, Switzerland and Cambridge, UK. IUCN. 1990. 1990 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland and Cambridge, UK. IUCN. 2002. 2002 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 8 October 2002. IUCN. 2002. 2002 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 8 October 2002. IUCN Conservation Monitoring Centre. 1986. 1986 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland and Cambridge, UK. IUCN Conservation Monitoring Centre. 1988. 1988 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland and Cambridge, UK. IUCN/SSC Tortoise and Freshwater Turtle Specialist Group and Asian Turtle Trade Working Group. 2000. Changes to 1996 IUCN Red List Status of Asian Turtle Species. In: P.P. van Dijk, B.L. Stuart and A.G.J. Rhodin (eds). Asian Turtle Trade: Proceedings of a Workshop on Conservation and Trade of Freshwater Turtles and Tortoises in Asia, pp.156-164. Chelonian Research Monographs 2. Chelonian Research Foundation, Lunenburg, Massachusetts, USA.

Baillie, J. and Groombridge, B. 1996. 1996 IUCN Red List of Threatened Animals. International Union for Conservation of Nature, Gland, Switzerland.

Groombridge, B. 1982. The IUCN Amphibia-Reptilia Red Data Book, Part 1: Testudines, Crocodylia, Rhynocehapalia. IUCN, Gland, Switzerland.

Groombridge, B. (ed.). 1994. 1994 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland and Cambridge, UK.

Hilton-Taylor, C. 2000. 2000 IUCN Red List of Threatened Species. IUCN, Gland, Switzerland and Cambridge, UK.

IUCN. 1990. 1990 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland and Cambridge, UK.

IUCN. 2002. 2002 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 8 October 2002.

IUCN Conservation Monitoring Centre. 1986. 1986 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland and Cambridge, UK.

IUCN Conservation Monitoring Centre. 1988. 1988 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland and Cambridge, UK.

IUCN/SSC Tortoise and Freshwater Turtle Specialist Group and Asian Turtle Trade Working Group. 2000. Changes to 1996 IUCN Red List Status of Asian Turtle Species. In: P.P. van Dijk, B.L. Stuart and A.G.J. Rhodin (eds). Asian Turtle Trade: Proceedings of a Workshop on Conservation and Trade of Freshwater Turtles and Tortoises in Asia, pp.156-164. Chelonian Research Monographs 2. Chelonian Research Foundation, Lunenburg, Massachusetts, USA.

Citation:	Asmat, G.S.M 2002. Nilssonia nigricans. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 10 February 2012.
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