Results 241 to 250 of about 142,780 (306)

Wild Chinook salmon productivity is negatively related to seal density and not related to hatchery releases in the Pacific Northwest

Canadian Journal of Fisheries and Aquatic Sciences, 2019
Predation risk and competition among conspecifics significantly affect survival of juvenile salmon, but are rarely incorporated into models that predict recruitment in salmon populations.
Benjamin W. Nelson, C. Walters, A. Trites, M. Mcallister   +3 more
semanticscholar   +1 more source

Selective Breeding of Chinook Salmon

Transactions of the American Fisheries Society, 1961
Abstract Selective breeding of plants and animals has been carried on for hundreds of years. Few attempts, however, have been made to breed salmon that have characteristics which would better fit the fish for the needs of modern salmon management. Experiments started in 1949 at the University of Washington to develop a selected stock of chinook salmon (
Lauren R. Donaldson, Deb Menasveta
openaire   +1 more source

Chinook salmon impede Atlantic salmon conservation in Lake Ontario

Ecology of Freshwater Fish, 2003
Abstract– Non‐native species can have substantial impacts on successful restoration of native species. Here, we examined effects of chinook salmon (Oncorhychus tshawytscha), an exotic species introduced to Lake Ontario to enhance recreational angling, on reintroduced Atlantic salmon (Salmo salar) in a Lake Ontario tributary stream.
Robert J. Scott, David L.G. Noakes, F. W. H. Beamish, Leon M. Carl   +3 more
openaire   +1 more source

Chinook salmon invade southern South America

Biological Invasions, 2007
We document the invasion of Chinook salmon (Oncorhynchus tshawytscha) to southern South America providing historical, current and future perspectives. We conducted field sampling, angler surveys, and analyzed all written records, and found evidence of reproductive populations in more than ten Andean (and many more coastal) watersheds draining mainly to
Cristián Correa, Mart R. Gross
openaire   +1 more source

Attempts to induce gynogenetic chinook salmon by chinook‐sockeye and chinook‐brown trout crosses

New Zealand Journal of Marine and Freshwater Research, 1990
Abstract Attempts were made to induce gynogenesis in bisexual chinook salmon (Oncorhynchus tshawytscha) by insemination of chinook eggs with sperms from either sockeye salmon (O. nerka) or brown trout (Salmo trutta). In both crosses the success rate of induction of embryonic development was low and the hatched fish had poor survival.
F. Y. T. Sin, C. L. Hopkins
openaire   +1 more source

Phenylhydrazine-induced anemia in chinook salmon

Toxicology and Applied Pharmacology, 1971
Abstract Single injections of phenylhydrazine (12.5 μg/g body weight) produced severe hemolytic anemia in chinook salmon (Oncorhynchus tshawytscha). Within 10 days erythrocyte counts, hemoglobin concentrations, and hematocrits were reduced to 1–5% of normal.
C.E. Smith, L.R. McLain, W.S. Zaugg
openaire   +1 more source

Penicillin residues in treated Chinook salmon

Food Research International, 1994
Abstract Muscle tissue concentrations of penicillin-G (pen-G) were measured in different groups of Chinook salmon on different days using an HPLC assay. Following oral administration of antimicrobial by gastric lavage for 10 days, measurable concentrations declined rapidly from a range of 0·05–10·58 μg/gm of muscle tissue on the first day following ...
D.D. Kitts, R.G. Aoyama, K.M. McErlane
openaire   +1 more source

Assimilation Efficiency of PBDE Congeners in Chinook Salmon

Environmental Science & Technology, 2015
Polybrominated diphenyl ether (PBDE) flame retardants are environmental contaminants that can accumulate in biota. PBDE accumulation in an organism depends on exposure, assimilation efficiency, and elimination/metabolism. Net assimilation efficiency represents the fraction of the contaminant that is retained in the organism after exposure.
Joseph P, Dietrich, Stacy A, Strickland, Greg P, Hutchinson, Ahna L, Van Gaest, Alex B, Krupkin, Gina M, Ylitalo, Mary R, Arkoosh   +6 more
openaire   +2 more sources

Viability of Sacramento River Winter‐Run Chinook Salmon

Conservation Biology, 1998
The winter run of chinook salmon (Oncorhynchus tshawytscha) on the Sacramento River in California (U.S.A.) was the first Pacific salmon stock to be listed under the U.S. Endangered Species Act. We describe some of the characteristics of Pacific salmon populations that require special consideration in viability analysis during development of a model ...
Louis W. Botsford, John G. Brittnacher
openaire   +1 more source

Puget Sound chinook salmon recovery

2015
This technical memorandum was developed by the Puget Sound Recovery Implementation Technical Team (PS RITT) to provide a formal monitoring and adaptive management framework (hereinafter called the framework) for assessing Puget Sound Chinook salmon recovery.
openaire   +1 more source