Abstract

Analysis of stomach contents of rainbow trout, cutthroat trout, and coho salmon from four lakes revealed a diversity of feeding habits. Copepods were the most frequently observed food items in the stomachs of the three salmonids. Cyclopoid copepods were most abundant in rainbow trout (198/fish), and less abundant in coho salmon (150/fish) and cutthroat trout (142/fish), respectively. Between 89-93% of the copepods found in stomach contents were Cyclops bicuspidatus, a species found to transmit bass tapeworm larvae to rainbow trout in laboratory experiments.

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