Results 121 to 130 of about 1,814 (181)

Phosphoglucomutase polymorphism in sockeye salmon

Comparative Biochemistry and Physiology, 1970
Abstract 1. 1. Phosphoglucomutase phenotypes of all but one of 633 sockeye salmon ( Oncorhynchus nerka ) consisted of one or both of two zones of activity resolved by starch gel electrophoresis. 2. 2. The common phenotypes could be explained by a hypothesis of two alleles at a single locus; the excpetional phenotype could be explained by ...
Fred M Utter, F M Utter
exaly   +3 more sources

Evolution of Sockeye Salmon Ecotypes

Science, 2001
Rapid evolution of reproductive isolation is proposed by A. Hendry and colleagues to be the cause of the genetic differences between two adjacent populations of Washington State sockeye salmon (Reports, 20 Oct., p. [516][1]). These two populations or “ecotypes,” one living in a tributary (Cedar River) and the other along a beach (Pleasure Point) of ...
Richard G. Gustafson, Robin Waples, Steven T. Kalinowski, Gary A. Winans   +3 more
openaire   +1 more source

Examining Evidence of Reproductive Isolation in Sockeye Salmon

Science, 2001
The study of speciation has recently undergone a revival, with much controversy centering on whether new species can originate quickly and within the geographic range of their ancestor. Hendry et al .
D J, Howard, J L, Marshall, W E, Braswell, J A, Coyne   +3 more
openaire   +2 more sources

Productivity and life history of sockeye salmon in relation to competition with pink and sockeye salmon in the North Pacific Ocean

Canadian Journal of Fisheries and Aquatic Sciences, 2015
Sockeye salmon (Oncorhynchus nerka) populations from Southeast Alaska through British Columbia to Washington State have experienced similar declines in productivity over the past two decades, leading to economic and ecosystem concerns. Because the declines have spanned a wide geographic area, the primary mechanisms driving them likely operate at a ...
Gregory T. Ruggerone, Brendan M. Connors
openaire   +1 more source

11-KETOTESTOSTERONE: AN ANDROGEN FOR SOCKEYE SALMON

Canadian Journal of Biochemistry and Physiology, 1961
11-Ketotesterone, a hormone in the blood of sockeye salmon, has been shown to have androgenic activity for this species. It influences skin thickness and coloration, flesh pigmentation, and spermatogenesis in the male. The effect of 11-ketotestosterone is not so pronounced in the female but it influences both skin thickness and coloration.
D. R. Idler, I. I. Bitners, P. J. Schmidt   +2 more
openaire   +1 more source

Corroboration of a Bioenergetics Model for Sockeye Salmon

Transactions of the American Fisheries Society, 1989
Abstract We constructed a bioenergetics model for sockeye salmon Oncorhynchus nerka and evaluated its sensitivity to parameter error. When used to predict annual growth, the model was most sensitive, in declining order of importance. to changes in the intercept of the dependence of consumption on body weight, the proportion of maximum consumption, the ...
David A. Beauchamp, Donald J. Stewart, G. L. Thomas   +2 more
openaire   +1 more source

The Rivers Inlet Sockeye Salmon

Journal of the Fisheries Research Board of Canada, 1958
The Rivers Inlet sockeye catch has averaged about 1 million fish per year, over 45 years. These are from smolts produced in a cold, deep lake, only 30 square miles in extent, and most of it heavily silted by glacial tributaries. The water has only a moderate lime content and its reaction is neutral or very slightly acid.
openaire   +1 more source

The Demise of Owikeno Lake Sockeye Salmon

North American Journal of Fisheries Management, 2001
Abstract A persistent period of low abundance in what was once the second largest fishery for sockeye salmon Oncorhynchus nerka in British Columbia has kept the Rivers Inlet fishery closed since 1996. Initial speculation about the cause of the decline focused on factors such as reduced egg-to-fry survival, declining quantity and quality of spawning ...
S. M. McKinnell, C. C. Wood, D. T. Rutherford, K. D. Hyatt, D. W. Welch   +4 more
openaire   +1 more source

Sounding Response of the Kokanee and Sockeye Salmon

Journal of the Fisheries Research Board of Canada, 1968
When frightened, sockeye and kokanee salmon dive into deeper waters. This is termed the "sounding response."The sounding response in these fish is accompanied by the expulsion of gas from the swimbladder via the pneumatic duct. This gas loss is active and results from the contraction of the circular muscle fibers in the wall of the swimbladder.Gas loss
H. H. Harvey, W. S. Hoar, C. R. Bothern
openaire   +1 more source

Hemoglobins of the sockeye salmon, Oncorhynchus nerka

Comparative Biochemistry and Physiology Part A: Physiology, 1988
Abstract 1. 1. Vertical starch-gel electrophoresis at pH8.6 revealed hemoglobin multiplicity with several distinct cathodal and anodal hemoglobin components. 2. 2. Cathodal hemoglobin components exhibited a higher oxygen affinity than the anodal hemoglobin components. 3. 3.
Jodyne Sauer, John P. Harrington
openaire   +1 more source