您好，欢迎访问中国水产科学研究院 机构知识库！
中国水产科学研究院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Cases report of covert mortality nodavirus infection in indoor farming Penaeus vannamei

文献类型： 外文期刊

作者： Yao, Liang 1 ; Wang, Chong 2 ; Wang, Wei 1 ; Li, Yingxia 2 ; Liu, Shuang 2 ; Kong, Jie 2 ; Zhang, Qingli 1 ;

作者机构： 1.Shanghai Ocean Univ, Int Res Ctr Marine Biosci Shanghai Ocean Univ, Natl Demonstrat Ctr Expt Fisheries Sci Educ, Natl Pathogen Collect Ctr Aquat Anim,Minist Sci &, Shanghai 201306, Peoples R China

2.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Funct Lab Marine Fisheries Sci & Food Prod Proc, Qingdao Natl Lab Marine Sci & Technol,Key Lab Mari, Qingdao 266071, Peoples R China

3.106 Nanjing Rd, Qingdao 266071, Peoples R China

关键词： Disease case; Penaeus vannamei; Covert mortality nodavirus (CMNV); Artemia; Pathogen carrier

期刊名称：AQUACULTURE REPORTS （ 影响因子：3.385； 五年影响因子：3.645 ）

ISSN： 2352-5134

年卷期： 2022 年 25 卷

页码：

收录情况： SCI

摘要： In late 2020, unusual patterns of shrimp mortality were reported in semi-intensive shrimp culture systems in Dongying city and Weifang city, China. In order to elucidate the cause of continual death that occurred in local shrimp (Penaeus vannamei) farms. Samples of shrimp and their frozen bait were collected and analyzed from 4 diseased farms in Dec 2020. Diseased shrimp showed abnormal behavior and symptoms including gathering at the pond bottom, whitish muscle, hepatopancreatic atrophy with color fading, etc. The molecular detecting results showed that 100 % of P. vannamei samples were tested to be positive of covert mortality nodavirus (CMNV). The histopathological lesion of tissues taken from moribund shrimp was similar to typical histopa-thology features of CMNV-infection. In situ hybridization (ISH) results indicated that massive CMNV-positive hybridization signal was observed in diseased shrimp tissues. Meanwhile, all of samples of frozen bait (i.e., Artemia sp. and Acetes sp.) were determined to be CMNV positive with much high viral load. The healthy shrimp individuals could be infected by the purified CMNV from Artemia sp.in the artificial challenged test. This study demonstrated that the frozen bait Artemia infected with CMNV was confirmed to be the pathogen carrier in the CMNV infection case, and represented a new potential pathogenic introduction threat to indoor shrimp farming. It was highly recommended to avoid using pathogen status unknown frozen bait in the shrimp aquaculture.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国水产科学研究院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台