Food Of Young-Of-The-Year Largemouth And Spotted Bass During The Filling Of Beaver Reservoir, Arkansas

Young-of-the-year largemouth, Micropterus salmoides (Lacepede), and spotted bass, M. punctulatus (Rafinesque), were collected period!cally from Beaver Reservoir during the growing seasons of 1964 and 1965. Scales were read to insure that all bass included in the study were young-of-the-year. Counts were made of the number of bass that had eaten a particu lar class of food rather than either how many or the volume of items eaten. Qualitative analysis of stomach contents indicated that entomostracans were eaten by a high percentage of small bass and were not eaten by the larger young-of-the-year bass. More bass of all sizes contained insects than entomostracans (excluding 10 to 19 mm largemouth bass!. More largemouth and spotted bass contained insects than fishes except more of the larger young-of-the-year largemouth bass had eaten fishes than insects. Within the 50 to 69 mm size range, diet throughout the growing season appeared to be influenced by food availability, and largemouth and spotted bass were similar in the food they ate, except more largemouth ate fishes than did spotted bass.

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