Reduction of Reactive Distance and Foraging Success in Smallmouth Bass, Micropterus dolomieu, Exposed to Elevated Turbidity Levels |
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| Authors: | John A Sweka Kyle J Hartman |
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| Institution: | (1) U.S. Fish and Wildlife Service, Northeast Fishery Center, P.O. Box 75, Lamar, PA, 16848, U.S.A.;(2) Division of Forestry, West Virginia University, P.O. Box 6125, Morgantown, WV, 26506, U.S.A |
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| Abstract: | We determined how turbidity affected the reactive distance and foraging success of smallmouth bass, Micropterus dolomieu. Smallmouth bass reactive distance decreased exponentially with increasing turbidity, from 65 cm in clear water to 10cm at the highest turbidity. Turbidity significantly decreased the probability of a fish reacting to a prey item, but did not influence foraging success following reaction to the prey. Elevated turbidity may reduce stream fish foraging efficiency and decrease prey consumption. |
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| Keywords: | vision feeding predation |
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