Behaviors of southwestern native fishes in response to introduced catfish predators
Journal of Fish and Wildlife Management
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Abstract
Native fishes reared in hatcheries typically suffer high predation mortality when stocked into natural environments. We evaluated the behavior of juvenile bonytail Gila elegans, roundtail chub Gila robusta, razorback sucker Xyrauchen texanus, and Sonora sucker Catostomus insignis in response to introduced channel catfish Ictalurus punctatus and flathead catfish Pylodictis olivaris. Our laboratory tests indicate these species did not inherently recognize catfish as a threat, but they can quickly (within 12 h) change their behavior in response to a novel predator paired with the sight and scent of a dead conspecific. Chubs appear to avoid predation by swimming away from the threat, whereas suckers reduced movement. Effects of antipredator conditioning on survival of fish reared in hatcheries is unknown; however, our results suggest some native fish can be conditioned to recognize introduced predators, which could increase poststocking survival.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Behaviors of southwestern native fishes in response to introduced catfish predators |
| Series title | Journal of Fish and Wildlife Management |
| DOI | 10.3996/092012-JFWM-084 |
| Volume | 4 |
| Issue | 2 |
| Year Published | 2013 |
| Language | English |
| Publisher | U.S. Fish & Wildlife Service |
| Contributing office(s) | Southwest Biological Science Center |
| Description | 9 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of Fish and Wildlife Management |
| First page | 307 |
| Last page | 315 |
| Google Analytic Metrics | Metrics page |