Effect of stream microhabitat characteristics on rate of net energy gain by juvenile smallmouth bass, Micropterus dolomieu
作者： Matthew J. Sabo , Donald J. Orth , Edmund J. Pert
DOI: 10.1007/BF00005019
关键词: Fishery 、 Centrarchidae 、 Foraging 、 Juvenile 、 Ecology 、 Bass (fish) 、 Micropterus 、 Net energy gain 、 Habitat 、 Energy balance 、 Biology
摘要: We estimated the rate of energy consumed and expended by 43 juvenile smallmouth bass, Micropterus dolomieu, videotaped in North Anna River during 1991. Habitat data were also collected areas where each individual was videotaped. The net gained (J·min−1) increased as water depths decreased mean water-column velocities increased. This relationship remained statistically significant even when we assumed that consumption little 40% our original estimates, respiratory costs three times higher than suspected. bass only affected characteristics area they searched not foraging tactics employed.
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