Coregonus nigripinnis

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 SALMONIFORMES SALMONIDAE

Scientific Name: Coregonus nigripinnis
Species Authority: (Hoy, 1872)
Common Name/s:
English – Blackfin Cisco
Taxonomic Notes: There is considerable doubt as to whether this is a valid taxon, and some authors argue that it was just a form of Coregonus artedi.

Assessment Information [top]

Red List Category & Criteria: Extinct     ver 2.3
Year Assessed: 1996
Annotations:
Needs updating
Assessor/s: Gimenez Dixon, M.
Justification:
Formerly occurred in the Great Lakes, where it is now extinct; last known specimens were taken from Lake Huron in 1923 and from Lake Michigan in 1969. The decline and extinction of this species was due to overfishing, sea lamprey predation, and introgressive hybridization.
History:
1994 – Endangered (Groombridge 1994)
1990 – Extinct (IUCN 1990)
1988 – Vulnerable (IUCN Conservation Monitoring Centre 1988)
1986 – Vulnerable (IUCN Conservation Monitoring Centre 1986)

Geographic Range [top]

Range Description: Formerly occurred in the Great Lakes (lakes Huron, Michigan, Ontario, and Superior); now apparently extinct in the Great Lakes; last known specimens from Lake Huron in 1923 and Lake Michigan in 1969. Populations of what may be this species are extant in Lake Nipigon and possibly in other localities in central Canada, but some authors argue that this is Coregonus artedi.
Countries:
Regionally extinct:
Canada; United States

Habitat and Ecology [top]

Habitat and Ecology: Occurred in the upper zones of deepwater areas of lakes.
Systems: Freshwater

Threats [top]

Major Threat(s): Decline and extinction due to overfishing, sea lamprey predation, and introgressive hybridization.
Citation: Gimenez Dixon, M. 1996. Coregonus nigripinnis. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 09 February 2012.
Disclaimer: To make use of this information, please check the <Terms of Use>.
Feedback: If you see any errors or have any questions or suggestions on what is shown on this page, please fill in the feedback form so that we can correct or extend the information provided