Chen, Yan
Bai, Yucen
Hu, Xiaolu
Yang, Xiaofei
Xu, Shaogang
Funding for this research was provided by:
Natural Science Foundation of Beijing Municipality (6194036)
Beijing technical industry system project (BAIC08-2019)
Key Laboratory of urban agriculture (North) of the Ministry of Agriculture (99124120)
Article History
Received: 17 September 2019
Accepted: 15 April 2020
First Online: 7 May 2020
Compliance with ethical standards
:
: The authors declare that they have no competing interests.
: This paper does not contain any studies with human participants by any of the authors. No specific permits were required for the described field studies. No specific permissions were required for access to the artificial pond in Yanqing site of the Beijing Fisheries Research Institute, Beijing, China. The field studies did not involve endangered or protected species.