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Additional Information

Competing Interests

The authors declare that they have no competing interests.

Author Contributions

Chanjuan Qu performed the experiments, analyzed the data, wrote the paper.

Kathryn A Stewart conceived and designed the experiments, analyzed the data, contributed reagents/materials/analysis tools, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Field Study Permissions

The following information was supplied relating to field study approvals (i.e., approving body and any reference numbers):

As all samples involved environmental water with no direct contact to YFP individuals, animal collection permits were thus not required, although all collections were ethically conducted with permission from conservation managers and WWF officers affiliated with the Tian e-Zhou Nature Reserve.

Data Deposition

The following information was supplied regarding data availability:

1) Figshare

2)Stewart, Kathryn (2017): Data_Qu&Stewart.xlsx. figshare.



This work was supported by the National Natural Sciences Foundation of China (No. 31400468) and the State Key Laboratory for Pollution Control and Resource Reuse (No. 0400219282) at Tongji University. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

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