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Effects of predator exposure on baseline and stress-induced glucocorticoid hormone concentrations in pumpkinseed Lepomis gibbosus |
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| Authors: | Austin J. Gallagher Michael J. Lawrence Sofia M. R. Jain-Schlaepfer Kathleen M. Gilmour Alexander D. M. Wilson Steven J. Cooke |
| Affiliation: | 1. Fish Ecology and Conservation Physiology Laboratory, Department of Biology and Institute of Environmental Science, Carleton University, Ottawa, Canada;2. Department of Biology, University of Ottawa, Ottawa, Canada;3. Fish Ecology and Conservation Physiology Laboratory, Department of Biology and Institute of Environmental Science, Carleton University, Ottawa, Canada School of Biological and Marine Sciences, University of Plymouth, Plymouth, UK |
| Abstract: | We compared baseline and maximal cortisol concentrations between predator exposure and prey blood samples in pumpkinseed Lepomis gibbosus, captured using a standardised fishing event underneath osprey Pandion haliaetus nests and away from osprey nests. We did not detect differences in cortisol or glucose between sites. These findings suggest that predictable sources of predation risk may not confer stress-related costs in teleosts. |
| Keywords: | cortisol Lepomis gibbosus predator prey risk stress |