About the Authors

Yukako Katsura

Affiliation Department of Evolutionary Studies of Biosystems, The Graduate University for Advanced Studies (Sokendai), Hayama, Kanagawa, Japan

Yoko Satta

satta@soken.ac.jp

Affiliation Department of Evolutionary Studies of Biosystems, The Graduate University for Advanced Studies (Sokendai), Hayama, Kanagawa, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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