Estimating survival in a remote community-based fishery using acoustic telemetry
Small-scale fisheries are often considered data poor due to a myriad of complex factors. Precise estimates of key demographic rates are central to the sustainable management of these fisheries. We used 3 years of acoustic telemetry data to derive survival estimates of Greenland halibut ( Reinhardtiu...
| Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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| Main Authors: | , , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Canadian Science Publishing
2022
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1139/cjfas-2021-0288 https://cdnsciencepub.com/doi/full-xml/10.1139/cjfas-2021-0288 https://cdnsciencepub.com/doi/pdf/10.1139/cjfas-2021-0288 |
| Summary: | Small-scale fisheries are often considered data poor due to a myriad of complex factors. Precise estimates of key demographic rates are central to the sustainable management of these fisheries. We used 3 years of acoustic telemetry data to derive survival estimates of Greenland halibut ( Reinhardtius hippoglossoides; n = 255) within a small-scale community fishery in Pangnirtung, Nunavut. Cormack–Jolly–Seber survival estimates were similar for the three top models (quarterly ϕ > 0.80) and detection probability varied with time and as a result of different tag configurations used ( p Tag type + t ). Survival also differed depending on the location and timing of fish tagging ( ϕ Catch summer vs. winter). A further joint analysis combining detections of live fish and returned tags estimated quarterly survival and site fidelity probability ( s = 0.97, 0.92–1.00 CI (credible interval) and f = 0.96, 0.92–1.00 CI, respectively). Survival estimates were unachievable using traditional tagging methods, highlighting the value of acoustic telemetry mark–recapture as a management tool for estimating demographic parameters for poorly known small-scale fisheries. |
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