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Influence Of Food Resources And Temperature On The Distribution And Energy Balance Of Bear Lake Sculpin, Cottus Extensus, Wayne A. Wurtsbaugh, Clyde Lay
Influence Of Food Resources And Temperature On The Distribution And Energy Balance Of Bear Lake Sculpin, Cottus Extensus, Wayne A. Wurtsbaugh, Clyde Lay
Watershed Sciences Faculty Publications
Changes in the abundance, diet, and daily ration of adult and sub-adult Bear Lake sculpin (Cottus extensus) were investigated seasonally along a littoral to profundal transect in Bear Lake to determine if or when sculpin were food limited. During different seasons, sculpin migrated inshore or offshore. These were most pronounced for age 1 + sculpin, 35-55 mm in length. This age class was most abundant in the littoral zone, particularly in August. The migrations of age two and older sculpin were less pronounced, and most of these fish were located in the profundal zone (>30 m). The …