【摘 要】
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Increasing evidence has revealed a close interplay between the gut bacterial communities and host growth performance.However,until recently,studies generally ignored the contribution of eukaryotes,end
【机 构】
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School of Marine Sciences, Ningbo University, Ningbo, 315211, China;Collaborative Innovation Center
【出 处】
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第二十次全国环境微生物学学术研讨会
论文部分内容阅读
Increasing evidence has revealed a close interplay between the gut bacterial communities and host growth performance.However,until recently,studies generally ignored the contribution of eukaryotes,endobiotic organisms.To fill this gap,we used Illumina sequencing technology on eukaryotic 18S rRNA gene to compare the structures of gut eukaryoticcommunities among cohabitating retarded,overgrown,and normal shrimp obtained from identically managed ponds.Results showed that a significant difference between gut eukaryoticcommunities differed significantly between waterand intestine and among three shrimp categories.Structuralequation modeling revealed that changes in the gut eukaryoticcommunity were positively related to digestive enzyme activities,which in turn influenced shrimp growth performance(λ =0.97,P < 0.001).Overgrown shrimp exhibited a morecomplex and cooperative gut eukaryotic interspecies interactionthan retarded and normal shrimp,which may facilitatetheir nutrient acquisition efficiency.Notably,the distributionof dominant eukaryotic genera and shifts in keystone specieswere closely concordant with shrimp growth performance.Insummary,this study provides an integrated overview on directroles of gut eukaryotic communities in shrimp growth performanceinstead of well-studied bacterial assembly.
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