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Chemicals released by predation increase the growth rate of yellow perch,Perca flavescens |
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| Authors: | T. P. Barry G. K. Dehnert P. D. Hoppe P. W. Sorensen |
| Affiliation: | 1. Department of Animal Sciences, University of Wisconsin Aquaculture Research Laboratory, 660 N Park Street, Madison, WI, 53706, U.S.A.;2. Department of Fisheries, Wildlife and Conservation Biology, Upper Buford Circle, University of Minnesota, St Paul, MN, 55108, U.S.A. |
| Abstract: | Water‐soluble factors associated with walleye Sander vitreus predation on either yellow perch Perca flavescens or fathead minnows Pimephales promelas markedly increased the growth rate of P. flavescens. The findings suggest that P. flavescens possess an inducible growth‐promoting mechanism regulated by water‐born chemicals. It may be possible to increase the growth rate of farm‐raised P. flavescens by manipulating this system. |
| Keywords: | alarm cue growth pheromone predation walleye yellow perch |