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- Title
Biologging in combination with biotelemetry reveals behavior of Atlantic salmon following exposure to capture and handling stressors.
- Authors
Lennox, Robert J.; Chapman, Jacqueline M.; Twardek, William M.; Broell, Franziska; Bøe, Kristin; Whoriskey, Frederick G.; Fleming, Ian A.; Robertson, Martha; Cooke, Steven J.
- Abstract
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.
- Subjects
ATLANTIC salmon; ABIOTIC environment; HUMAN ecology; BIOTELEMETRY; DATA loggers; MIGRATORY fishes; FISH migration
- Publication
Canadian Journal of Fisheries & Aquatic Sciences, 2019, Vol 76, Issue 12, p2176
- ISSN
0706-652X
- Publication type
Article
- DOI
10.1139/cjfas-2018-0477