1. Department of Basic Veterinary, Sichuan Agricultural University, Chengdu, Sichuan, China
2. Pearl River Fishery Research Institute, Chinese Academy of Fishery Science, Guangzhou, Guangdong, China
3. Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, China\
4. Department of Aquaculture, Sichuan Agricultural University, Chengdu, Sichuan, China