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Life Sciences Commons

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Retrospective Theses and Dissertations

Environmental Sciences

1993

Fisheries biology

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Full-Text Articles in Life Sciences

Effects Of Cadmium On Juvenile Bluegill (Lepomis Macrochirus) Foraging Behavior And Growth , Michael D. Bryan Jan 1993

Effects Of Cadmium On Juvenile Bluegill (Lepomis Macrochirus) Foraging Behavior And Growth , Michael D. Bryan

Retrospective Theses and Dissertations

Standardized toxicity testing protocols for assessing chemical hazards to aquatic organisms inadequately consider behavioral effects of toxicants; yet, organisms behaving abnormally in the wild experience reduced growth, fitness, and higher mortality. This study determined the effects of cadmium (0, 30, 60, 120, and 240 [mu]g/L) on juvenile bluegill (Lepomis macrochirus) foraging behavior in three 28-d functional response experiments, and one 24-d multi-prey experiment. The study also examined how cadmium-altered behaviors contributed to reduced growth rates. Different sizes of Daphnia magna and D. pulex were used as prey in these experiments. The rate of change (i.e., trends over ...