Results 141 to 150 of about 965 (180)

DEMOGRAPHIC RESPONSES TO FOOD AND SPACE COMPETITION BY JUVENILE STEELHEAD TROUT

Ecology, 2001
I conducted two experiments in artificial stream channels, manipulating den- sity of competitors, food abundance, and the possibility of emigration, to test whether density-dependence can operate through these factors in populations of a stream-dwelling salmonid fish, juvenile steelhead trout (Oncorhynchus mykiss).
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Seawater adaptation independent of photoperiod in steelhead trout (Salmo gairdneri)

Canadian Journal of Zoology, 1974
As evidenced by immediate-transition experiments, seawater adaptation in juvenile steelhead trout was independent of photoperiod and the onset of parr–smolt transformation. Increased survival occurred as the fish grew larger, and euryhalinity was reached at 12 to 13 cm.
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Permanence of Station in Juvenile Chinook Salmon and Steelhead Trout

Journal of the Fisheries Research Board of Canada, 1968
Daytime movements and night locations of juvenile steelhead trout (Salmo gairdneri) and night locations of spring-run chinook salmon (Oncorhynchus tshawytscha) were observed in Johnson Creek and the Lochsa River in Idaho during the summers of 1965 and 1966. The observations were made by branding fish and observing them subsequently under water.
Eldon Edmundson, F. E. Everest, D. W. Chapman   +2 more
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Arteriosclerosis in steelhead trout, Oncorhynchus mykiss (Walbaum): a developmental analysis

Journal of Fish Biology, 1990
Arteriosclerosis in Oncorhynchur mykiss has been examined histologically in parr, smolts, spawning adults and post‐spawning adults captured during downstream migration. All stages of fish from the Clearwater River in Idaho are characterized by the presence of lesions in the main vessel on the bulbus arteriosus.
A. Kubasch, A. W. Rourke
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Limited Fertilization of Steelhead Trout Eggs with Cryo-Preserved Sperm

Journal of the Fisheries Research Board of Canada, 1969
Results are reported on the fertilization (to 18%) of steelhead trout (Salmo gairdneri) eggs with cryo-preserved sperm. Fresh semen was progressively diluted to 1: 4 with an extender containing 5 or 12.5% dimethyl sulfoxide, sealed in 1.0-ml ampoules, frozen in the vapor of liquid nitrogen, and subsequently thawed in a 4 C water bath.
J. R. Graybill, H. F. Horton
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PROLIFERATIVE KIDNEY DISEASE (PKD) IN PACIFIC SALMON AND STEELHEAD TROUT

Journal of the World Mariculture Society, 1984
ABSTRACTProliferative kidney disease (PKD) was detected for the first time in Pacific salmon at a California State Hatchery in June 1983. Both chinook (Oncorhynchus tschawytscha) and coho (O. kisutch) salmon and steelhead trout (Salm gairdneri) held at the hatchery contracted the disease.
R. P. Hedrick, M. L. Kent, R. Rosemark, D. Manzer   +3 more
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Immunohistochemical localization of rhamnose-binding lectins in the steelhead trout (Oncorhynchus mykiss)

Developmental & Comparative Immunology, 2002
The localization of three -rhamnose-binding lectins named STL1, STL2, and STL3 from eggs of steelhead trout (Oncorhynchus mykiss) was analyzed by indirect immunohistochemical staining with specific antisera against individual lectins. In early previtellogenic oocyte, STL1 was localized not only in the cortical vesicles, but also in the plasma membrane ...
H, Tateno, T, Yamaguchi, T, Ogawa, K, Muramoto, T, Watanabe, H, Kamiya, M, Saneyoshi   +6 more
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Cage Rearing of Steelhead Rainbow Trout in a Freshwater Impoundment

The Progressive Fish-Culturist, 1977
Abstract From fall through early spring of 1973-74 and 1974-75, floating cages were used experimentally to rear fingerling steelhead trout (Salmo gairdneri) to yearlings in a small freshwater impoundment on the northern coast of California. Respective totals of 7,102 and 29,475 yearlings were produced in the two seasons.
L. B. Boydstun, James S. Hopelain
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An experimental analysis of self‐thinning in juvenile steelhead trout

Oikos, 2003
Mobile animal populations have been proposed to decline in density according to a slope based on the allometry of metabolic requirements or space requirements. In salmonid fishes, metabolic rate and food consumption scale to body mass by the exponent 0.87 and 0.73, respectively; whereas the territory size of steelhead trout scales ...
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Genetic structure in populations of steelhead trout in British Columbia

1980
Rainbow trout (Salmo gairdneri) collected from 63 locations in British Columbia were studied using electrophoresis to examine genetic structuring of populations. Most collections were from anadromous populations, in which gene flow is possible between widely separated locations.
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