Fisheries shocks provide an opportunity to reveal multiple recruitment sources of sardine in the Sea of Japan
Tatsuya Sakamoto,
Motomitsu Takahashi,
Kotaro Shirai
et al.
Abstract:1. Understanding the sources of recruits is essential for stock assessments of marine fish populations. In 2014 and 2019, schools of Japanese sardine in the Sea of Japan and the East China Sea (SJ-ECS), which arrive in Japanese coastal areas for spawning each spring were shockingly sparse. Abundances of eggs and juveniles also showed abrupt declines, suggesting that sardine reproduction in the SJ-ECS was severely limited during these years. However, in spring of 2015 and 2020 age-1 fish appeared as usual in th… Show more
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