Capture versus tagging impacts on chum salmon freshwater spawning migration travel times
Fisheries Management and Ecology
Links
- More information: Publisher Index Page (via DOI)
- Download citation as: RIS | Dublin Core
Abstract
The spawning migration travel times of chum salmon, Oncorhynchus keta (Walbaum), fitted with gastrically implanted radio tags vs external spaghetti tags were tested for a short [≈60 river km (rkm)] and long migration route (≈730 rkm) on the Koyukuk River, Alaska, USA. Using a novel application of statistical arrival curve models to infer travel times for uncaptured fish, migrations by chum salmon not directly handled during the study were also assessed. Results demonstrated negligible differences in travel times within migration routes between fish fitted only with spaghetti tags and fish fitted with radio tags, indicating low impacts on migration travel behaviour associated with gastric tags once deployed. Conversely, travel times for unhandled fish as inferred by statistical arrival models may have been 12%–24% shorter than those for fish captured with gillnets for tagging. These results suggest that, if present, chum salmon migration behaviour impacts may be more strongly associated with fish capture than tag deployment.
Suggested Citation
Sethi, S., 2019, Capture versus tagging impacts on chum salmon freshwater spawning migration travel times: Fisheries Management and Ecology, v. 25, no. 4, p. 296-303, https://doi.org/10.1111/fme.12294.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Capture versus tagging impacts on chum salmon freshwater spawning migration travel times |
| Series title | Fisheries Management and Ecology |
| DOI | 10.1111/fme.12294 |
| Volume | 25 |
| Issue | 4 |
| Publication Date | June 19, 2018 |
| Year Published | 2019 |
| Language | English |
| Publisher | Wiley |
| Contributing office(s) | Coop Res Unit Leetown |
| Description | 8 p. |
| First page | 296 |
| Last page | 303 |