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Wild and Hatchery Steelhead and Cutthroat Trout Populations of the Little Campbell River, B.C., 1983 Rempel, M.H.
1984
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D
Abstract: A fish counting fence was operated for the second year at the Little Campbell River. The main objectives were to (1) evaluate the migratory success of hatchery steelhead and cutthroat smolts stocked at various sites upstream of the fence and (2) provide data on the production of steelhead and sea-run cutthroat trout smolts that would be typical of low gradient fertile streams in the lower mainland of British Columbia. During late April 1983, 6900 steelhead trout smolts (mean weight 124 g) and 2000 cutthroat trout smolts (mean weight 112 g) were stocked into the Little Campbell River, 2?7 km upstream of the counting fence. Fifty-seven percent of the steelhead and 39% of the cutthroat migrated downstream through the counting fence. Low migratation of these hatchery smolts demonstrated for the second year a serious problem of residualism and pre-migration mortality. Electrofishing surveys have confirmed that residualism is a main factor. Residualism is associated with precocious sexual development which is proba
 
Rempel, M.H., Land, R.W.; Mitchell, L.W.; Ward, B.R.. 1984. Wild and Hatchery Steelhead and Cutthroat Trout Populations of the Little Campbell River, B.C., 1983. Ministry of Environment. Fisheries Technical Circular. 62
 
Topic: Fish and Fish Habitats
Keywords: hatchery, smolts, migration, stocking, residualism, Little Campbell River, mortality, age composition, yields
ISSN: 0229-1150 Scientific Name: Oncorhynchus clarkii, Oncorhynchus mykiss
ISBN: 0-7726-0174-7 English Name: Cutthroat Trout, Rainbow Trout
Other Identifier: FTC 62
 
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