About the Authors

Ryuji J. Machida

MachidaR@si.edu

Current address: Smithsonian National Museum of Natural History, Washington, D. C., United States of America

Affiliation Ocean Research Institute, University of Tokyo, Tokyo, Japan

Atsushi Tsuda

Affiliation Ocean Research Institute, University of Tokyo, Tokyo, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: RJM. Performed the experiments: RJM. Analyzed the data: RJM. Contributed reagents/materials/analysis tools: RJM AT. Wrote the paper: RJM AT.