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The food and feeding chronology of yellow perch (Perca flavescens) in Lake Washington

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  • The food habits of yellow perch in Lake Washington were studied over a period of nine months. Altogether, 549 yellow perch were examined for the stomach contents. The food consisted mainly of cottids, mysid shrimp, and chironomid pupae and larvae; the predominant food item being the mysid shrimp. There was no difference in the food consumed between the different sexes and between the different size groups. However, a considerable seasonal variation in the consumption of different food items was seen. Maximum feeding by perch during the day was observed just before dusk, and the daily ration was calculated to be about 0.014 grams per gram of body weight.
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file details Internal_Report_155.pdf 2017-07-18 Pubblico Scaricare