Utilization of Ohio River Shallow Water Habitats by Young-of-the-Year Fishes

摘要

Between 9 June and 11 November, 1981 and 9 June and 8 October, 1982, 149 samples were collected from selected backwater and mainstem sites of the middle Ohio River. Twenty-one species were collected in sixty percent or more of the backwater samples, compared to six species collected in sixty percent of samples for mainstem margins. Comparative densities as analyzed by the T-test were significantly higher (at the 0.5 level) for a greater number of species in backwaters (16) than mainstem margins (0). The objective of the study is to answer the questions concerning species composition dietary habits, dietary overlap, and growth rate of young-of-the-year fishes in shallow water habitats of the Ohio River.