盐度对弓背青鳉行为及肠道菌群的影响

doi:10.19754/j.nyyjs.20240715025

摘要/Abstract

摘要： 研究盐度对背青鳞(Oryzias curvinotus)游泳行为及肠道菌群的影响。将青鳞饲养于0(L组)、15 (M组)和30(H组)盐度水体中，通过行为分析和16SDNA测序探究其游泳行为特征和肠道菌群组成结构。 M组弓背青鳞处于大运动状态时间显著低于H组。各盐度组弓背青鳞肠道的优势菌群均为变形菌门，属水平上， M组中Haloferula总丰度显著高于L组和H组(P<0.O5);不同盐度组中弓背青鳉肠道丰度(ACE指数、Chaol 指数)无显著差异，H组香农指数显著高于M组(P<0.05),L组辛普森指数显著高于M组(P<0.O5);Bta多样性分析表明，不同盐度组弓背青鳞肠道菌群之间有一定的差异。PICRUS2功能预测表明，弓背青鳉肠道菌群涉及6个主代谢通路，新陈代谢为最主要的功能。弓背青鳞对0~30盐度具有较好的适应能力，盐度变化可引起肠道菌群结构的变化，结果为阐明弓背青鳉广盐性适应机制提供了理论依据，有助于弓背青鳞的进一步开发。关键词：弓背青鳉；盐度；行为；肠道菌群

中图分类号:

S917

. 盐度对弓背青鳉行为及肠道菌群的影响[J]. 农业与技术, 2024, 44(13): 114-120.

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