論文

査読有り
2019年3月

Dual effects of reversed winter–spring temperatures on year-to-year variation in the recruitment of chub mackerel (Scomber japonicus)

Fisheries Oceanography
  • Hitoshi Kaneko
  • ,
  • Takeshi Okunishi
  • ,
  • Takashi Seto
  • ,
  • Hiroshi Kuroda
  • ,
  • Sachihiko Itoh
  • ,
  • Shinya Kouketsu
  • ,
  • Daisuke Hasegawa

28
2
開始ページ
212
終了ページ
227
記述言語
掲載種別
研究論文(学術雑誌)
DOI
10.1111/fog.12403

© 2018 John Wiley & Sons Ltd To clarify the effects of temperature on the recruitment of chub mackerel (Scomber japonicus) in the North Pacific, we investigated the influence of winter surface temperature (WST) on spawners at the time of maturity around the spawning grounds and the influence of ambient spring temperature on larvae using estimated temperature (ET) obtained from particle tracking experiments. We found a significant positive correlation between ET approximately 10 days following hatching and the recruitment per spawning stock biomass (RPS) after 2000. The closer (more meandering) the Kuroshio Current (KC) axis was in relation to the spawning ground, the higher (lower) the spring surface temperature and the higher (lower) RPS was in the spawning ground. In contrast, WST inside KC near the maturity/spawning ground was significantly negatively correlated with RPS. A significant negative correlation between the temperatures in winter and spring was detected in the area after 2000, when the conditions of the Pacific decadal oscillation index and the stability of the Kuroshio Extension were synchronous, indicating that KC shifted northward during this time. The reversed temperature pattern was consistent with the winter–spring movement of KC axis in the offshore direction and was correlated with the winter–spring difference in the intensity of the Aleutian low. These results suggest that the annual variation in chub mackerel recruitment after 2000 was strongly affected by the combined effects of ambient temperature because of the reversal of conditions that occurred between winter and spring around the maturity/spawning ground, which was related to the KC path.

リンク情報
DOI
https://doi.org/10.1111/fog.12403
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000458570200008&DestApp=WOS_CPL
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85056172237&origin=inward
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85056172237&origin=inward
ID情報
  • DOI : 10.1111/fog.12403
  • ISSN : 1054-6006
  • eISSN : 1365-2419
  • SCOPUS ID : 85056172237
  • Web of Science ID : WOS:000458570200008

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