About the Authors

Jun Uetake

juetake@nipr.ac.jp

Affiliations Transdisciplinary Research Integration Center, Minato-ku, Tokyo, Japan, National Institute of Polar Research, Tachikawa, Tokyo, Japan

Sota Tanaka

Affiliation Faculty of Science, Chiba University, Chiba, Chiba, Japan

Kosuke Hara

Affiliation Graduate School of Science, Kyoto University, Kyoto, Japan

Yukiko Tanabe

Affiliation Institute for Advanced Study, Waseda University, Shinjuku-ku, Tokyo, Japan

Denis Samyn

Affiliation Department of Mechanical Engineering, Nagaoka University of Technology, Nagaoka, Nigata, Japan

Hideaki Motoyama

Affiliation Faculty of Science, Chiba University, Chiba, Chiba, Japan

Satoshi Imura

Affiliation Faculty of Science, Chiba University, Chiba, Chiba, Japan

Shiro Kohshima

Affiliation Wildlife Research Center, Kyoto University, Kyoto, Kyoto, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JU YT. Performed the experiments: JU ST KH YT DS. Analyzed the data: JU YT. Contributed reagents/materials/analysis tools: JU YT HM SI SK. Wrote the paper: JU YT DS SK.