Date of Award:
5-1978
Document Type:
Thesis
Degree Name:
Master of Science (MS)
Department:
Wildland Resources
Department name when degree awarded
Wildlife Science
Committee Chair(s)
William T. Helm
Committee
William T. Helm
Committee
Richard S. Wydoski
Committee
Norman B. Jones
Abstract
Estimates of the brown trout (Salmo trutta) population were made in two areas of the Blacksmith Fork River, Cache County, Utah, from June 1972 to June 1973. Additional data were obtained on movement, growth, mortality, biomass, production, and yield.
Population density was highly variable in the area where habitat alterations had occurred, but was relatively uniform where the habitat was undisturbed. The brown trout exhibited little movement except during spawning season. Instantaneous growth and mortality rates are provided for each age group.
Mean annual biomass in the two areas was 12.0 and 10.2 grams per square meter and production was estimated at 9.2 and 7.7 grams per square meter per y ear in the two study areas. Gametes comprised approximately 5 percent of the annual production and angler harvest removed 39 percent of production.
Checksum
fe88df9612e664fd25e7de82f150c82b
Recommended Citation
Gosse, Jeffrey C., "Population Dynamics and Net Production of Brown Trout (Salmo trutta) in Two Areas of a High Gradient Mountain Stream" (1978). All Graduate Theses and Dissertations, Spring 1920 to Summer 2023. 6351.
https://digitalcommons.usu.edu/etd/6351
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