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Cyprinus yilongensis

Status_ne_offStatus_dd_offStatus_lc_offStatus_nt_offStatus_vu_offStatus_en_offStatus_cr_offStatus_ew_offStatus_ex_on

Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA ACTINOPTERYGII CYPRINIFORMES CYPRINIDAE

Scientific Name: Cyprinus yilongensis
Species Authority: Yang et al., 1977
Taxonomic Notes:

Assessment Information [top]

Red List Category & Criteria: Extinct ver 3.1
Year Published: 2011
Date Assessed: 2011-01-21
Assessor(s): Zhou, W.
Reviewer(s): Allen, D.J., Zhao, H., Cui, K. & Chen, X.-Y.
Justification:
Considered to have gone extinct as Yilong Lake dried up as a result of water abstraction for agriculture in the 1981. The species was surveyed for in 1983 and 1984, but was not found, and recent surveys by the Kunming Institute of Technology have also not found the species (W.  Zhou pers. comm, 2011). No live specimens exist in captivity.
History:
1996 Extinct
1994 Extinct? (Groombridge 1994)

Geographic Range [top]

Range Description: The species is only known from Yilong Lake, Yunnan, southern China. The species was first described in 1977, from specimens collected in 1963-4.
Countries:
Regionally extinct:
China (Yunnan)
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The species is thought to be extinct. The lake was surveyed in 1983-84 (W. Zhou pers. comm. 2011), and the species was not recorded. Recent surveys by the Kunming Institute of Technology have also not found the species (W.  Zhou pers. comm, 2011). No live specimens exist in captivity.

Habitat and Ecology [top]

Habitat and Ecology: Previously recorded from a lake.
Systems: Freshwater

Use and Trade [top]

Use and Trade: The species was utilised in fisheries.

Threats [top]

Major Threat(s): Overfishing depleted populations of the species. The water level of the lake declined since the 1950s. In 1981 the lake completely dried up (for about 20 days) as a result of water abstraction for agriculture. The lake is also polluted by increased organic pollution caused by sedimentation from the surrounding catchment. Urbanisation and pollution from agriculture are also threats.

Conservation Actions [top]

Conservation Actions: No conservation actions are in place.

Citation: Zhou, W. 2011. Cyprinus yilongensis. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 23 August 2014.
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