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Contrasting life-history responses to climate variability in eastern and western North Pacific sardine populations

Author

Listed:
  • Tatsuya Sakamoto

    (Japan Fisheries Research and Education Agency)

  • Motomitsu Takahashi

    (Japan Fisheries Research and Education Agency)

  • Ming-Tsung Chung

    (The University of Tokyo
    National Taiwan University)

  • Ryan R. Rykaczewski

    (NOAA National Marine Fisheries Service
    University of Hawaii)

  • Kosei Komatsu

    (The University of Tokyo
    University of Tokyo)

  • Kotaro Shirai

    (The University of Tokyo)

  • Toyoho Ishimura

    (Kyoto University
    National Institute of Technology, Ibaraki College)

  • Tomihiko Higuchi

    (The University of Tokyo)

Abstract

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.

Suggested Citation

  • Tatsuya Sakamoto & Motomitsu Takahashi & Ming-Tsung Chung & Ryan R. Rykaczewski & Kosei Komatsu & Kotaro Shirai & Toyoho Ishimura & Tomihiko Higuchi, 2022. "Contrasting life-history responses to climate variability in eastern and western North Pacific sardine populations," Nature Communications, Nature, vol. 13(1), pages 1-13, December.
  • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-33019-z
    DOI: 10.1038/s41467-022-33019-z
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    Cited by:

    1. Clive N. Trueman & Iraide Artetxe-Arrate & Lisa A. Kerr & Andrew J. S. Meijers & Jay R. Rooker & Rahul Sivankutty & Haritz Arrizabalaga & Antonio Belmonte & Simeon Deguara & Nicolas Goñi & Enrique Rod, 2023. "Thermal sensitivity of field metabolic rate predicts differential futures for bluefin tuna juveniles across the Atlantic Ocean," Nature Communications, Nature, vol. 14(1), pages 1-12, December.

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