Effect of intestinal tapeworms on the gut microbiota of the common carp, Cyprinus carpio

BackgroundParasitic protozoans, helminths, alter the gut microbiota in mammals, yet little is known about the influence of intestinal cestodes on gut microbiota in fish. In the present study, the composition and diversity of the hindgut microbiota were determined in the intestine of common carp (Cyprinus carpio) infected with two tapeworm species, Khawia japonensis and Atractolytocestus tenuicollis.ResultsThe intestine contained a core microbiota composed of Proteobacteria, Fusobacteria and Tenericutes. Infection with the two cestode species had no significant effect on the microbial diversity and richness, but it altered the microbial composition at the genus level. PCoA analysis indicated that microbial communities in the infected and uninfected common carp could not be distinguished from each other. However, a Mantel test indicated that the abundance of K. japonensis was significantly correlated with the microbial composition (P=0.015), while the abundance of A. tenuicollis was not (P=0.954). According to Pearsons correlation analysis, the abundance of K. japonensis exhibited an extremely significant (P

背景 寄生原生动物、蠕虫会改变哺乳动物的肠道微生物群，但关于肠道绦虫对鱼类肠道微生物群的影响知之甚少。在本研究中，测定了感染两种绦虫（日本裂头绦虫和细颈囊尾蚴）的鲤鱼肠道后肠微生物群的组成和多样性。 结果 肠道含有一个由变形菌门、梭杆菌门和软壁菌门组成的核心微生物群。感染这两种绦虫对微生物多样性和丰富度没有显著影响，但在属水平上改变了微生物组成。主坐标分析（PCoA）表明，感染和未感染的鲤鱼的微生物群落无法相互区分。然而，曼特尔检验表明，日本裂头绦虫的数量与微生物组成显著相关（P = 0.015），而细颈囊尾蚴的数量则不相关（P = 0.954）。根据皮尔逊相关性分析，日本裂头绦虫的数量呈现极显著（P （最后一个单词“P”后面似乎内容不完整，如果还有遗漏内容，请补充完整后再次提问。）