Lampetra minima

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA CEPHALASPIDOMORPHI PETROMYZONTIFORMES PETROMYZONTIDAE

Scientific Name: Lampetra minima
Species Authority: Bond & Kan, 1973
Common Name/s:
English – Miller Lake Lamprey

Assessment Information [top]

Red List Category & Criteria: Data Deficient     ver 3.1
Year Assessed: 2004
Assessor/s: Hilton-Taylor, C. (Red List Programme Office)
Reviewer/s: Darwall, W. (Freshwater Biodiversity Assessment Programme) & Pollock, C.M. (Red List Programme Office)
Justification:
The parasitic Miller Lake Lamprey was thought to have gone Extinct in about 1958. This was as a result of a deliberate chemical treatment of Miller Lake (the only known location at the time) to exterminate this species to prevent predation on introduced trout fingerlings. However, in 1992, an adult lamprey collected in the Williamson River was identified as L. minima, and, in 1996, unidentified lamprey were collected in Miller Creek, the outflow stream of Miller Lake. Subsequent surveys in the summers of 1997–1999 reconfirmed the species extinction in Miller Lake but lead to the discovery of several subpopulations of L. minima within and outside the Miller Lake sub-basin (Lorion et al. 2000).

The rediscovery of this species was only brought to the attention of the IUCN Red List Programme in 2004. It is provisionally listed here as Data Deficient pending a reassessment of its status.
History:
1996 – Extinct (Baillie and Groombridge 1996)
1994 – Extinct (Groombridge 1994)
1990 – Extinct (IUCN 1990)
1988 – Extinct (IUCN Conservation Monitoring Centre 1988)
1986 – Extinct (IUCN Conservation Monitoring Centre 1986)

Geographic Range [top]

Range Description: Formerly thought to be endemic to Miller Lake (16 km northeast of Mt. Thielson), Klamath County, Oregon. Recent surveys documented subpopulations in Miller Creek, Jack Creek, and the upper sections of the Williamson and Sycan rivers (Lorion et al. 2000).
Countries:
Native:
United States (Oregon)

Habitat and Ecology [top]

Systems: Freshwater

Bibliography [top]

Baillie, J. and Groombridge, B (editors and compilers). 1996. 1996 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland and Cambridge, UK.

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

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

IUCN. 2004. 2004 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 23 November 2004.

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.

Lorion, C.M., Markle, D.F., Reid, S.B. and Docker, M.F. 2000. Redescription of the presumed-extinct Miller Lake Lamprey. Copeia 2000(4): 1019-1028.
Citation: Hilton-Taylor, C. 2004. Lampetra minima. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 10 February 2012.
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