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Experimental Study of the Effect of Various Water Temperatures on the Growth, Food Utilization, and Mortality Rates of Fingerling Sockeye Salmon
Author(s) -
Donaldson Lauren R.,
Foster Fred J.
Publication year - 1941
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1940)70[339:esoteo]2.0.co;2
Subject(s) - thermocline , fishery , fish <actinopterygii> , environmental science , growth rate , biology , ecology , mathematics , geometry
Experiments were conducted with sockeye salmon fingerlings to determine the effect of various water temperatures on the growth, mortality, and food conversion of the fish. Maximum tolerance temperatures were determined, as were the optimum growth zones, as found in Skaha Lake, British Columbia, during the summer and fall months. The experimental data tend to confirm the field observations that young sockeye salmon have a preference for water temperatures similar to those found near the thermocline during the summer and fall months. The temperature of the surface layer of water in the lake was too high for optimum growth, survival, and efficient utilization of food.