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タイトル: | Contrasting life-history responses to climate variability in eastern and western North Pacific sardine populations |
著者: | Sakamoto, Tatsuya https://orcid.org/0000-0003-0672-4168 (unconfirmed) Takahashi, Motomitsu Chung, Ming-Tsung Rykaczewski, Ryan R. Komatsu, Kosei Shirai, Kotaro Ishimura, Toyoho https://orcid.org/0000-0001-9708-3743 (unconfirmed) Higuchi, Tomihiko |
著者名の別形: | 坂本, 達也 髙橋, 素光 小松, 幸生 白井, 厚太朗 石村, 豊穂 樋口, 富彦 |
キーワード: | Fisheries Marine biology Population dynamics |
発行日: | 16-Oct-2022 |
出版者: | Springer Nature |
誌名: | Nature Communications |
巻: | 13 |
論文番号: | 5298 |
抄録: | Massive populations of sardines inhabit both the western and eastern boundaries of the world’s subtropical ocean basins, supporting both commercial fisheries and populations of marine predators. Sardine populations in western and eastern boundary current systems have responded oppositely to decadal scale anomalies in ocean temperature, but the mechanism for differing variability has remained unclear. Here, based on otolith microstructure and high-resolution stable isotope analyses, we show that habitat temperature, early life growth rates, energy expenditure, metabolically optimal temperature, and, most importantly, the relationship between growth rate and temperature are remarkably different between the two subpopulations in the western and eastern North Pacific. Varying metabolic responses to environmental changes partly explain the contrasting growth responses. Consistent differences in the life-history traits are observed between subpopulations in the western and eastern boundary current systems around South Africa. These growth and survival characteristics can facilitate the contrasting responses of sardine populations to climate change. |
記述: | 大洋の東西で異なるマイワシの環境応答 --耳石が示すグローバル生存戦略の鍵--. 京都大学プレスリリース. 2022-10-17. |
著作権等: | © The Author(s) 2022 This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. |
URI: | http://hdl.handle.net/2433/276806 |
DOI(出版社版): | 10.1038/s41467-022-33019-z |
PubMed ID: | 36244978 |
関連リンク: | https://www.kyoto-u.ac.jp/ja/research-news/2022-10-17-0 |
出現コレクション: | 学術雑誌掲載論文等 |
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