Microbial community changes in the digestive tract of the clam Meretrix petechialis in response to Vibrio parahaemolyticus challenge  

作　　者：Hongxia WANG Xin YUE Jiajia YU Rui WANG Shuangshuang TENG Jun FANG Baozhong LIU 

机构地区：[1]CAS Key Laboratory of Experimental Marine Biology,Institute of Oceanology,Center for Ocean Mega-Science,Chinese Academy of Sciences,Qingdao 266071,China [2]Laboratory for Marine Biology and Biotechnology,Qingdao National Laboratory for Marine Science and Technology,Qingdao 266000,China [3]Zhejiang Mariculture Research Institute,Wenzhou 325005,China [4]Zhejiang Key Laboratory of Exploitation and Preservation of Coastal Bio-resource,Wenzhou 325005,China

出　　处：《Journal of Oceanology and Limnology》2021年第1期329-339,共11页海洋湖沼学报（英文）

基　　金：Supported by the National Natural Science Foundation of China(No.31772845);the China Agriculture Research System(No.CARS-49);the Science and Technology Service Network Initiative of the Chinese Academy of Sciences(No.KFJ-STS-ZDTP-049);the Foundation of Zhejiang Key Laboratory of Exploitation and Preservation of Coastal Bio-Resource(No.J2018001)。

摘　　要：Disease in clams frequently occurred over the last decade and has become a serious threat to the clam aquaculture industry and natural stocks.Mass clam mortality events were reported to be associated with the presence of opportunistic pathogen vibrio.However,the complexity of infection that occurs in the natural environment remains poorly understood.In this study,we smulated a natural disease outbreak by vibrio immersion infection to study the diversity and dynamics of microbiota in the digestive tract of clam Meretrix petechialis during the infection process.Dramatic changes in operational taxonomic unit richness and phylum composition of the bacterial communities were observed during pathogen invasion.In addition,we investigated the potential relationship between microbiota dynamics and host status during disease progression.Results reveal that,at the end stage of vibrio infection,interindividual variation in the digestive tract microbiota increased,as did the diff erence in individual health status.The moribund clams displayed signs of microbial community shifts to low diversity,and the microbial community was characterized by mass proliferation of a few operational taxonomic units.

关 键 词：Meretrix petechialis vibrio challenge 16S ribosomal RNA bacterial community digestive tract 

分 类 号：S944.3[农业科学—水产养殖]