About the Authors

Gengping Zhu

gengpingzhu@hotmail.com

Affiliation College of Environmental Science and Engineering, Nankai University, Tianjin, China

Wenjun Bu

Affiliation College of Life Sciences, Nankai University, Tianjin, China

Yubao Gao

Affiliation College of Life Sciences, Nankai University, Tianjin, China

Guoqing Liu

Affiliation College of Life Sciences, Nankai University, Tianjin, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: GZ WB YG. Performed the experiments: GZ WB. Analyzed the data: GZ WB. Contributed reagents/materials/analysis tools: GZ WB. Wrote the paper: GZ GL YG. Nihce theory discussion: YG. Occurrence records validation: WB.