Abstract
Recreational angling is a popular leisure activity globally and can be a threat or useful conservation tool depending on the management strategy. Miyabe charr Salvelinus malma miyabei is an endemic fish that inhabits Lake Shikaribetsu, and a management program was established to harmonise recreational fishery and conservation. To examine the suitability of this program, population assessment was conducted with the cooperation of anglers. The population size in 2014 as assessed by tag-and-release angling was estimated to be 105,300 [95% confidence interval (CI) 37,300–178,600], much higher than the reported estimate in 1995. Further, angling mortality was estimated to be quite low. Moreover, no decreasing population trend was detected on analysing 8 years of anglers’ catch data. Consequently, angling has facilitated stock assessments of Miyabe charr under the current program. This case is a good example of recreational angling acting as a conservation tool under appropriate management.
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Acknowledgements
We thank K. Takeda, T. Tabata, K. Sawada, K. Takahashi, H. Otagiri, A. Ishizawa, K. Tabata and all support staff of Great Fishing in Lake Shikaribetsu for supporting our fieldwork. We also acknowledge T. Higashihara, M. Itou and all staff of Commerce and Tourism Department of Shikaoi Town government for their administrative support. We are grateful to H. Murata, T. Sugisaka and S. Kijima for helping us with sampling, and two anonymous reviewers for providing helpful comments.
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Yoshiyama, T., Tsuboi, Ji. & Matsuishi, T. Recreational fishery as a conservation tool for endemic Dolly Varden Salvelinus malma miyabei in Lake Shikaribetsu, Japan. Fish Sci 83, 171–180 (2017). https://doi.org/10.1007/s12562-016-1051-3
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DOI: https://doi.org/10.1007/s12562-016-1051-3