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Supplemental Information

Raw data

raw data of farm survey

DOI: 10.7287/peerj.preprints.27178v1/supp-1

Additional Information

Competing Interests

The authors declare that they have no competing interests.

Author Contributions

Zhengang Yan conceived and designed the experiments, performed the experiments, prepared figures and/or tables, authored or reviewed drafts of the paper, approved the final draft.

Wei Li analyzed the data.

Tianhai Yan contributed reagents/materials/analysis tools, authored or reviewed drafts of the paper.

Shenghua Chang contributed reagents/materials/analysis tools.

Fujiang Hou conceived and designed the experiments, approved the final draft.

Data Deposition

The following information was supplied regarding data availability:

The raw data/code is uploaded as a supplemental file.


This research was co-funded by the National Natural Science Foundation of China (No.31660347&31172249), National Key Project of Scientific and Technical Supporting Programmes (2014CB138706) and Programme for Changjiang Scholars and Innovative Research Team in University (IRT13019). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

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