Numerical and Economic Contributions of Wild and Hatchery Pink Salmon to Commercial Catches in Japan Estimated from Mass Otolith Markings
Abstract Evaluating the contribution of wild and hatchery fish to a fishery is essential to understand economic feasibility as well as the impact of hatchery fish on the ecosystem. However, a precise estimate of this contribution is often difficult to obtain, particularly when hatchery and wild fish...
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crwiley:10.1080/02755947.2015.1020078 2024-06-23T07:55:56+00:00 Numerical and Economic Contributions of Wild and Hatchery Pink Salmon to Commercial Catches in Japan Estimated from Mass Otolith Markings Ohnuki, Tsutomu Morita, Kentaro Tokuda, Hiroshi Okamoto, Yasutaka Ohkuma, Kazumasa 2015 http://dx.doi.org/10.1080/02755947.2015.1020078 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1080/02755947.2015.1020078 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor North American Journal of Fisheries Management volume 35, issue 3, page 598-604 ISSN 0275-5947 1548-8675 journal-article 2015 crwiley https://doi.org/10.1080/02755947.2015.1020078 2024-05-31T08:14:18Z Abstract Evaluating the contribution of wild and hatchery fish to a fishery is essential to understand economic feasibility as well as the impact of hatchery fish on the ecosystem. However, a precise estimate of this contribution is often difficult to obtain, particularly when hatchery and wild fish are mixed in the catch. In this study, we quantified the contribution of hatchery and wild Pink Salmon Oncorhynchus gorbuscha to the mixed‐stock commercial fishery in Japan by identifying the ratio of otolith‐marked hatchery fish to unmarked and presumably wild fish. The contribution of hatchery fish to the total coastal catch of Pink Salmon in Japan was estimated to be 16.6% and 26.4% in 2011 and 2012, respectively. Thus, the majority of the commercial salmon catch originated from naturally spawned wild fish. Economic yield per release by Japanese hatcheries was 2.2 yen (¥2.2) (≈US$0.022) and ¥1.5 in 2011 and 2012. Received October 5, 2014; accepted February 7, 2015 Article in Journal/Newspaper Oncorhynchus gorbuscha Pink salmon Wiley Online Library North American Journal of Fisheries Management 35 3 598 604 |
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English |
description |
Abstract Evaluating the contribution of wild and hatchery fish to a fishery is essential to understand economic feasibility as well as the impact of hatchery fish on the ecosystem. However, a precise estimate of this contribution is often difficult to obtain, particularly when hatchery and wild fish are mixed in the catch. In this study, we quantified the contribution of hatchery and wild Pink Salmon Oncorhynchus gorbuscha to the mixed‐stock commercial fishery in Japan by identifying the ratio of otolith‐marked hatchery fish to unmarked and presumably wild fish. The contribution of hatchery fish to the total coastal catch of Pink Salmon in Japan was estimated to be 16.6% and 26.4% in 2011 and 2012, respectively. Thus, the majority of the commercial salmon catch originated from naturally spawned wild fish. Economic yield per release by Japanese hatcheries was 2.2 yen (¥2.2) (≈US$0.022) and ¥1.5 in 2011 and 2012. Received October 5, 2014; accepted February 7, 2015 |
format |
Article in Journal/Newspaper |
author |
Ohnuki, Tsutomu Morita, Kentaro Tokuda, Hiroshi Okamoto, Yasutaka Ohkuma, Kazumasa |
spellingShingle |
Ohnuki, Tsutomu Morita, Kentaro Tokuda, Hiroshi Okamoto, Yasutaka Ohkuma, Kazumasa Numerical and Economic Contributions of Wild and Hatchery Pink Salmon to Commercial Catches in Japan Estimated from Mass Otolith Markings |
author_facet |
Ohnuki, Tsutomu Morita, Kentaro Tokuda, Hiroshi Okamoto, Yasutaka Ohkuma, Kazumasa |
author_sort |
Ohnuki, Tsutomu |
title |
Numerical and Economic Contributions of Wild and Hatchery Pink Salmon to Commercial Catches in Japan Estimated from Mass Otolith Markings |
title_short |
Numerical and Economic Contributions of Wild and Hatchery Pink Salmon to Commercial Catches in Japan Estimated from Mass Otolith Markings |
title_full |
Numerical and Economic Contributions of Wild and Hatchery Pink Salmon to Commercial Catches in Japan Estimated from Mass Otolith Markings |
title_fullStr |
Numerical and Economic Contributions of Wild and Hatchery Pink Salmon to Commercial Catches in Japan Estimated from Mass Otolith Markings |
title_full_unstemmed |
Numerical and Economic Contributions of Wild and Hatchery Pink Salmon to Commercial Catches in Japan Estimated from Mass Otolith Markings |
title_sort |
numerical and economic contributions of wild and hatchery pink salmon to commercial catches in japan estimated from mass otolith markings |
publisher |
Wiley |
publishDate |
2015 |
url |
http://dx.doi.org/10.1080/02755947.2015.1020078 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1080/02755947.2015.1020078 |
genre |
Oncorhynchus gorbuscha Pink salmon |
genre_facet |
Oncorhynchus gorbuscha Pink salmon |
op_source |
North American Journal of Fisheries Management volume 35, issue 3, page 598-604 ISSN 0275-5947 1548-8675 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1080/02755947.2015.1020078 |
container_title |
North American Journal of Fisheries Management |
container_volume |
35 |
container_issue |
3 |
container_start_page |
598 |
op_container_end_page |
604 |
_version_ |
1802648743579746304 |