Results 171 to 180 of about 15,838 (222)

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
openaire   +2 more sources

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

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

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

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

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

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
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Dynamic in-lake spawning migrations by female sockeye salmon

Ecology of Freshwater Fish, 2007
Abstract –  Precise homing by salmon to natal habitats is considered the primary mechanism in the evolution of population‐specific traits, yet few studies have focused on this final phase of their spawning migration. We radio tagged 157 female sockeye salmon (Oncorhynchus nerka) as they entered Lake Clark, Alaska, and tracked them every 1–10 days to ...
D. B. Young, C. A. Woody
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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

Phototactic behaviour of emerging sockeye salmon fry

Animal Behaviour, 1964
Abstract A fry trap designed to study the behaviour of emerging sockeye salmon fry in Brooks River, Alaska, during the spring of 1961 revealed the following: 1. 1. The initial emergence of sockeye salmon, fry from natal gravels was basically nocturnal.
openaire   +1 more source