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Coregonus zenithicus

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA ACTINOPTERYGII SALMONIFORMES SALMONIDAE

Scientific Name: Coregonus zenithicus
Species Authority: (Jordan & Evermann, 1909)
Common Name/s:
English – Shortjaw Cisco

Assessment Information [top]

Red List Category & Criteria: Vulnerable   A1bc   ver 2.3
Year Published: 1996
Annotations:
Needs updating
Assessor/s: Gimenez Dixon, M.
Justification:
Populations in lakes Michigan, Huron, and Erie are apparently extinct and extant populations elsewhere (lakes Superior and Nipigon) are in decline. Populations outside the Great Lakes are scattered and thought to be small. Decline is due primarily to overfishing, predation by sea lamprey, and effects of introduced species.
History:
1994 – Endangered (Groombridge 1994)
1990 – Endangered (IUCN 1990)
1988 – Vulnerable (IUCN Conservation Monitoring Centre 1988)
1986 – Vulnerable (IUCN Conservation Monitoring Centre 1986)

Geographic Range [top]

Range Description: Recorded from the Great Lakes (extant but declining in Lake Superior, relatively common in Lake Nipigon) to Great Slave Lake, Northwest Territories; uncommon outside Great Lakes basin. Occurrences also reported from Lake Winnipeg, Manitoba; Reindeer Lake and Lake Athabasca, Saskatchewan; Barrow Lake, Alberta; and Great Slave Lake, Northwest Territories. Has apparently been extirpated from lakes Michigan, Huron, and Erie.2
Countries:
Native:
Canada; United States
Range Map: Click here to open the map viewer and explore range.

Habitat and Ecology [top]

Habitat and Ecology: Generally in deep water of large lakes.
Systems: Freshwater

Threats [top]

Major Threat(s): The major threats include overfishing, predation by sea lamprey, and effects of introduced species; the last is considered the greatest current threat.
Citation: Gimenez Dixon, M. 1996. Coregonus zenithicus. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 25 May 2012.
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