Survival and Dispersal of Sonic‐Tagged, Hatchery‐Reared Burbot Released into the Kootenay River
Abstract As part of recovery efforts for the Kootenay population of Burbot Lota lota , we monitored 109 sonic‐tagged, hatchery‐reared Burbot released at 1–3 years of age throughout Kootenay Lake and the Kootenay River over a 3‐year period. Our objectives were to evaluate broodstock choice, assess di...
| Published in: | Transactions of the American Fisheries Society |
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| Main Authors: | , , , , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Wiley
2013
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/00028487.2013.774293 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1080/00028487.2013.774293 |
| Summary: | Abstract As part of recovery efforts for the Kootenay population of Burbot Lota lota , we monitored 109 sonic‐tagged, hatchery‐reared Burbot released at 1–3 years of age throughout Kootenay Lake and the Kootenay River over a 3‐year period. Our objectives were to evaluate broodstock choice, assess differences in survival and dispersal by release site and age, and evaluate spawning movements. Overall, release survival was high (66%) and there was dispersal throughout the system (up to 235 km), involving both lacustrine and riverine habitat. Spawning movements were extensive (up to 59 km/d upstream) and suggest the use of known spawning locations. However, most age‐1 releases had lower survival and remained in the release tributaries for 1 year postrelease, which was longer than expected and which warrants further investigation. Overall, this telemetry study provides a positive outlook on the current aquaculture rehabilitation efforts for Kootenay Burbot and provides direction for further work. |
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