Results 131 to 140 of about 1,852 (178)

Retinal projections in sockeye salmon smolts (Oncorhynchus nerka)

Cell and Tissue Research, 1988
The retinal projections in 2-year-old salmon smolt (Oncorhynchus nerka) are significantly different from those observed in other teleosts examined to date in that the projections are more extensive. Very noticeable are extensive projections to most of the dorsal thalamus, to all layers of the optic tectum, and into the periaqueductal gray of the torus ...
S O, Ebbesson, G T, Bazer, J B, Reynolds, R P, Bailey   +3 more
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Maturational steroids and gonadotropin in upstream migratory sockeye salmon

General and Comparative Endocrinology, 1986
The circulating serum concentrations of various steroid hormones in mature sockeye salmon were measured at four different developmental stages in their upstream migration to spawn at Adams River in British Columbia, Canada. In females, a high level of estradiol-17 beta was found in fish at the first location, and it persisted until immediately before ...
B, Truscott, D R, Idler, Y P, So, J M, Walsh   +3 more
openaire   +2 more sources

Differences in Thermal Tolerance Among Sockeye Salmon Populations

Science, 2011
Environmental conditions encountered during migration shape cardiorespiratory physiology in sockeye salmon.
Erika J, Eliason, Timothy D, Clark, Merran J, Hague, Linda M, Hanson, Zoë S, Gallagher, Ken M, Jeffries, Marika K, Gale, David A, Patterson, Scott G, Hinch, Anthony P, Farrell   +9 more
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Vertebral Abnormalities in Sockeye, Pink, and Chum Salmon

Transactions of the American Fisheries Society, 1966
Abstract Radiographs of vertebral structures of 10,377 sockeye, 4,403 chum, and 4,777 pink salmon collected in 1958 to 1962 were examined to determine the frequency of occurrence of abnormal vertebrae in wild populations of mature Pacific salmon. Various types of deviations from the orderly processes of development or segmentation that resulted in ...
Charles D. Gill, Donald M. Fisk
openaire   +1 more source

Harvesting wellness with Okanagan sockeye salmon

2020
Prior to colonization the Syilx Okanagan people were healthy and strong, by honouring reciprocal relationships with salmon and all living things. Colonization contributed to a loss of salmon abundance that is now being restored by the Syilx Okanagan Nation.
openaire   +1 more source

An Improved Sibling Model for Forecasting Chum Salmon and Sockeye Salmon Abundance

North American Journal of Fisheries Management, 2007
Abstract The sibling model is often one of the best methods for calculating preseason forecasts of adult return abundance (recruits) for populations of Pacific salmon Oncorhynchus spp. This model forecasts abundance of a given age-class for a given year based on the abundance of the previous age-class in the previous year.
Steven L. Haeseker, Brigitte Dorner, Randall M. Peterman, Zhenming Su   +3 more
openaire   +1 more source

The Skeena River Salmon Fishery, with Special Reference to Sockeye Salmon

Journal of the Fisheries Research Board of Canada, 1955
The general history of the Skeena River commercial salmon fishery is presented from 1877 to 1948. The changes in fishing areas, seasons and fishing methods are described, together with the trends in the catches obtained. The most accurate data pertain to the important sockeye salmon gill-net fishery.
openaire   +1 more source

SEX CHROMOSOMES IN THE SOCKEYE SALMON: A Y-AUTOSOME FUSION

Canadian Journal of Genetics and Cytology, 1978
Chromosomes of 21 sockeye salmon [Oncorhynchus nerka (Walbaum)] from three locations in Washington state were examined. All males had 57 chromosomes, while all females had 58 chromosomes. Both sexes had 104 chromosome arms. It appears that in males of this species the Y chromosome and an autosome have fused to form a metacentric chromosome.
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Liver arginase activity in the sockeye salmon, Oncorhynchus nerka

Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1971
Abstract 1. 1. Liver arginase levels in adult sockeye salmon show characteristics similar to that of higher animals. 2. 2. Results show that sockeye liver arginase has a pH optimum of 9·5, is partially dependent on Mn2+ ions and has a temperature optimum of 45°C.
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Cardiovascular Dynamics in Swimming Adult Sockeye Salmon

Journal of the Fisheries Research Board of Canada, 1967
Dorsal aortic blood pressure, heart rate, and oral water pressure were recorded in adult sockeye salmon (Oncorhynchus nerka) while they were resting in darkened aquaria or swimming in an illuminated tunnel-respirometer. Pressures were recorded on an oscillograph attached to pressure transducers connected with cannulae in the dorsal aorta and oral ...
L. S. Smith, J. R. Brett, J. C. Davis
openaire   +1 more source