About the Authors

Katsufumi Sato

katsu@ori.u-tokyo.ac.jp

Affiliation International Coastal Research Center, Ocean Research Institute, The University of Tokyo, Otsuchi, Iwate, Japan

Kentaro Q. Sakamoto

Affiliation Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan

Yutaka Watanuki

Affiliation Graduate School of Fisheries Sciences, Hokkaido University, Hakodate, Japan

Akinori Takahashi

Affiliation National Institute of Polar Research, Itabashi, Tokyo, Japan

Nobuhiro Katsumata

Affiliation International Coastal Research Center, Ocean Research Institute, The University of Tokyo, Otsuchi, Iwate, Japan

Charles-André Bost

Affiliation Centre d'Etudes Biologiques de Chizé-CNRS, Villier en Bois, Beauvoir/Niort, France

Henri Weimerskirch

Affiliation Centre d'Etudes Biologiques de Chizé-CNRS, Villier en Bois, Beauvoir/Niort, France

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KS HW. Performed the experiments: KS YW AT NK CAB. Analyzed the data: KS KQS NK. Contributed reagents/materials/analysis tools: KS KQS. Wrote the paper: KS AT.