Biologging in combination with biotelemetry reveals behavior of Atlantic salmon following exposure to capture and handling stressors
| Autor: | Jacqueline M. Chapman, Robert J. Lennox, Kristin Bøe, Ian A. Fleming, Franziska Broell, William M. Twardek, Frederick G. Whoriskey, Steven J. Cooke, Martha J. Robertson |
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| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Canadian Journal of Fisheries and Aquatic Sciences. 76:2176-2183 |
| ISSN: | 1205-7533 0706-652X |
| Popis: | We investigated the response of Atlantic salmon (Salmo salar) to capture and handling stressors by analyzing fine-scale locomotor activity using accelerometer data loggers and broader-scale movements by tracking migration with radiotelemetry. Half the sample population was exposed to experimental exercise and air exposure and released with a control group to simulate fisheries handling. All but two of the surviving fish (both in the treatment group) returned to the counting fence to resume the 2016 spawning migration (survival = 86%–91%). There were no differences in postrelease locomotor activity, measured by an index of total body action (jerk), between control and treatment salmon (p = 0.81). Comparison of mean time to return to the counting fence against a null model revealed that treatment salmon were significantly delayed in returning to the counting fence (p < 0.01), whereas control fish were not (p = 0.24). Both the abiotic environment and human interactions influenced locomotor activity of the migratory fish and synchrony of the migration with untreated conspecifics. |
| Databáze: | OpenAIRE |
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