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Home Q & A Board Biology-Related Homework Help Environmental and Conservation Biology
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colleen colleen
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12 years ago
The rivers of central Portugal have been invaded, and densely populated, by the Louisiana crayfish, Procambarus clarki, which looks like a freshwater lobster about 12 to 14 cm long. The otters of these rivers can easily catch and subdue these crayfish. Using the model for prey choice: explain why the diets of the otters of central Portugal would shift from a highly diverse menu which includes fish, frogs, water snakes, birds, and insects, to a diet dominated by crayfish. For the crayfish, assume low handling time, very high encounter rates, and high energy content.
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bio_manbio_man
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