Evaluation of three gears for sampling spawning populations of rainbow trout in a large Alaskan river
North American Journal of Fisheries Management
By: C.J. Schwanke and W.A. Hubert
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Abstract
Alternatives to electrofishing are needed for sampling sexually mature rainbow trout Oncorhynchus mykiss during the spawning season in large Alaskan rivers. We compared hook and line, beach seining, and actively fished gill nets as sampling tools. Beach seining and active gill netting yielded similar catch rates, length frequencies, and sex ratios of sexually mature fish. Hook-and-line sampling was less effective, with a lower catch rate and selectivity for immature fish and sexually mature females. We conclude that both beach seining and active gill netting can serve as alternatives to electrofishing for sampling sexually mature rainbow trout stocks during the spawning season in large rivers with stable spring flows and spawning areas with few snags.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Evaluation of three gears for sampling spawning populations of rainbow trout in a large Alaskan river |
| Series title | North American Journal of Fisheries Management |
| DOI | 10.1577/M03-062.1 |
| Volume | 24 |
| Issue | 3 |
| Year Published | 2004 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | North American Journal of Fisheries Management |
| First page | 1078 |
| Last page | 1082 |
| Google Analytic Metrics | Metrics page |