Ambient temperature alters body size and gut microbiota of Xenopus tropicalis  

作　　者：Jiaying Li Junpeng Rui Yulong Li Na Tang Songping Zhan Jianping Jiang Xiangzhen Li 

机构地区：[1]Key Laboratory of Environmental and Applied Microbiology,Chinese Academy of Sciences,Environmental Microbiology Key Laboratory of Sichuan Province,Chengdu Institute of Biology,Chinese Academy of Sciences,Chengdu 610041,China [2]University of Chinese Academy of Sciences,Bejing 100049,China [3]Department of Herpetology,Chengdu Institute of Biology,Chinese Academy of Sciences,Chengdu 610041,China

出　　处：《Science China(Life Sciences)》2020年第6期915-925,共11页中国科学（生命科学英文版）

基　　金：the National Key Program of Research and Development, Ministry of Science and Technology of China (2016YFC0503200);Sichuan Province Science and Technology Project (2017SZ0004);the 13th Five-year Informatization Plan of Chinese Academy of Sciences (XXH13503-03-106);Open Fund of Key Laboratory of Environmental and Applied Microbiology CAS (KLCAS-2017-3, KLCAS2016-03);China Biodiversity Observation Networks (Sino BON)。

摘　　要：Temperature is important to determine physiological status of ectotherms. However, it is still not fully understood how amphibians and their symbiotic microbiota acclimate to ambient temperature. In this study, we investigated the changes of gut microbiota of Xenopus tropicalis at different temperatures under controlled laboratory conditions. The results showed that microbial communities were distinct and shared only a small overlap among froglet guts, culture water and food samples.Furthermore, the dominant taxa harbored in the gut exhibited low relative abundance in water and food. It indicates that bacterial taxa selected by amphibian gut were generally of low abundance in the external environment. Temperature could affect betadiversity of gut microbiota in terms of phylogenetic distance, but it did not affect alpha diversity. The composition of gut microbiota was similar in warm and cool treatments. However, signature taxa in different temperature environments were identified. The relationships between temperature, gut microbiota and morphology traits of X. tropicalis revealed in this study help us to predict the consequences of environmental changes on ectothermic animals.

关 键 词：gut microbiota Xenopus tropicalis TEMPERATURE body size thermal adaptation 

分 类 号：Q958[生物学—动物学]