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Behavioural responses of prey fishes to habitat complexity and predation risk induce bias in minnow trap catches |
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| Authors: | Dupuch A Paradis Y Magnan P |
| Affiliation: | Centre de recherche sur les interactions bassins versants, écosystèmes aquatiques (RIVE), Université du Québec à Trois-Rivières, C.P. 500, Trois-Rivières, QC, G9A 5H7, Canada. angelique.dupuch.1@ulaval.ca |
| Abstract: | The effects of predation risk and habitat complexity on the efficiency of minnow traps to catch northern redbelly dace Chrosomus eos in laboratory experiments were investigated. Trap efficiency significantly decreased in the presence of vegetation and predators. These results suggest that the various antipredator behaviours used by prey fishes can affect trap efficiency. |
| Keywords: | antipredator behaviour Chrosomus eos fish trapping data sampling bias sheltering shoaling |
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