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Species
Salvelinus namaycush (Walbaum, 1792)
IUCN
NCBI
EOL Text
Dorsal spines (total): 4 - 5; Dorsal soft rays (total): 8 - 10; Anal spines: 4 - 5; Analsoft rays: 8 - 10; Vertebrae: 61 - 69
License | http://creativecommons.org/licenses/by-nc/3.0/ |
Rights holder/Author | Rodolfo B. Reyes, FishBase |
Source | http://www.fishbase.org/summary/SpeciesSummary.php?id=248 |
>1,000,000 individuals
Comments: Total adult population size is unknown but very large.
Siscowet lake trout are highly abundant in Lake Superior (Harvey et al. 2003).
License | http://creativecommons.org/licenses/by-nc/3.0/ |
Rights holder/Author | NatureServe |
Source | http://explorer.natureserve.org/servlet/NatureServe?searchName=Salvelinus+namaycush |
Restoration Potential: Lake trout restoration is possible if sea lampreys are controlled, the appropriate strain is stocked, and exploitation is limited, although additional limiting factors could hinder success in some locations of the Great Lakes (Reid et al. 2001).
See Eshenroder (1987) for information on the role of contaminant burdens and socioeconomic factors in the reestablishment of populations in the Great Lakes.
Management Requirements: See Kaeding et al. (1996) for information on proposed control methods (gillnetting, trapping) for introduced lake trout in Yellowstone Lake.
License | http://creativecommons.org/licenses/by-nc/3.0/ |
Rights holder/Author | NatureServe |
Source | http://explorer.natureserve.org/servlet/NatureServe?searchName=Salvelinus+namaycush |
Length: 51 cm
Slow growing, long lived. Especially vulnerable to sea lamprey parasitism.
Lake trout can displace bull trout and may prevent bull trout from becoming established in certain low elevation lakes (Donald and Alger 1993).
Evidence from central U.S. waters of Lake Superior implies that siscowet predation on nearshore prey has not had a direct negative effect on lean lake trout stocks (Harvey et al. 2003).
Although once an important commercial fish stock, lake trout levels in the Great Lakes dropped sharply during the 1950's. Lake trout are still highly valued as a sport fish and anglers who seek this species contribute to the regional economy of areas with fishable populations through the purchase of fishing licenses.
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | ©1995-2013, The Regents of the University of Michigan and its licensors |
Source | http://animaldiversity.ummz.umich.edu/accounts/Salvelinus_namaycush/ |
Maximum size: 1200 mm TL
Perception Channels: tactile ; chemical
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | ©1995-2013, The Regents of the University of Michigan and its licensors |
Source | http://animaldiversity.ummz.umich.edu/accounts/Salvelinus_namaycush/ |
Although once an important commercial fish stock, lake trout levels in the Great Lakes dropped sharply during the 1950's. Lake trout are still highly valued as a sport fish and anglers who seek this species contribute to the regional economy of areas with fishable populations through the purchase of fishing licenses.
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | ©1995-2012, The Regents of the University of Michigan and its licensors |
Source | http://www.biokids.umich.edu/critters/Salvelinus_namaycush/ |
150 cm TL (male/unsexed; (Ref. 40637)); max. published weight: 32.7 kg (Ref. 40637); max. reported age: 50 years (Ref. 3494)
License | http://creativecommons.org/licenses/by-nc/3.0/ |
Rights holder/Author | Susan M. Luna, FishBase |
Source | http://www.fishbase.org/summary/SpeciesSummary.php?id=248 |