Utilization of autochthonous macroinvertebrate drift by a pool fish community in a woodland stream |
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| Authors: | Eugene R. Mancini M. Busdosh B. Douglas Steele |
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| Affiliation: | (1) Water Resources Laboratory, University of Louisville, 40208 Louisville, Kentucky;(2) Present address: Woodward-Clyde Consultants, 3489 Kurtz Street, 92110 San Diego, California, USA;(3) Present address: Department of Natural Resources, Water Resources Division, 1201 Greenbrier Street, 25311 Charleston, West Virginia, USA |
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| Abstract: | Qualitative and quantitative drift data were collected simultaneously above and below a pool both before and after the pool was heavily electrofished. These data revealed no significant difference between drift organism densities (#/m3) above or below the pool before or after fish collection. Qualitative and quantitative fish gut analyses suggest that the sunfishes Lepomis megalotis, L. macrochirus and L. cyanellus may be feeding on drifting invertebrates as these organisms comprised 58%, 37% and 35% gut volume, respectively. A design for a long-term drift net apparatus is presented. |
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| Keywords: | macroinvertebrate drift drift sampler fish predation on autochthonous drift |
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