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高跃, 刘春华, 姜泽建, 郑跃平, 徐嘉楠, 范厚勇, 王有基, 胡梦红. 水下噪音对杂交鲟行为及肠道微生物的影响[J]. 水生生物学报, 2023, 47(6): 931-939. DOI: 10.7541/2023.2022.0106
引用本文: 高跃, 刘春华, 姜泽建, 郑跃平, 徐嘉楠, 范厚勇, 王有基, 胡梦红. 水下噪音对杂交鲟行为及肠道微生物的影响[J]. 水生生物学报, 2023, 47(6): 931-939. DOI: 10.7541/2023.2022.0106
GAO Yue, LIU Chun-Hua, JIANG Ze-Jian, ZHENG Yue-Ping, XU Jia-Nan, FAN Hou-Yong, WANG You-Ji, HU Meng-Hong. UNDERWATER NOISE ON THE BEHAVIOR AND GUT MICROBIAL COMPOSITION OF HYBRID STURGEON[J]. ACTA HYDROBIOLOGICA SINICA, 2023, 47(6): 931-939. DOI: 10.7541/2023.2022.0106
Citation: GAO Yue, LIU Chun-Hua, JIANG Ze-Jian, ZHENG Yue-Ping, XU Jia-Nan, FAN Hou-Yong, WANG You-Ji, HU Meng-Hong. UNDERWATER NOISE ON THE BEHAVIOR AND GUT MICROBIAL COMPOSITION OF HYBRID STURGEON[J]. ACTA HYDROBIOLOGICA SINICA, 2023, 47(6): 931-939. DOI: 10.7541/2023.2022.0106

水下噪音对杂交鲟行为及肠道微生物的影响

UNDERWATER NOISE ON THE BEHAVIOR AND GUT MICROBIAL COMPOSITION OF HYBRID STURGEON

  • 摘要: 为探究水下噪音对杂交鲟行为变化(游泳速率、摄食速率、空间分布)及其肠道微生物的影响, 在(145±5) dB, 400 Hz的噪音条件下对杂交鲟进行了0、24h、48h、7d和14d 的噪音刺激, 随后置于无胁迫噪音的自然环境中恢复48h。结果显示, 噪音刺激后杂交鲟游泳速度和摄食速度显著减慢, 空间分布发生改变, 噪音刺激开始时杂交鲟聚集于远离噪音源的一侧, 3min后却逐渐接近噪音源。噪音对杂交鲟的肠道微生物的丰富度无显著性影响; 不同时间段的各组肠道微生物的优势种群存在差异, 且随时间变化优势种群反复改变; 以上微生物分析结果通过COG预测显示, 噪音胁迫48h和7d时“细胞信号传递过程”, “碳水化合物的转运”及“氨基酸的运输和代谢功能”显著低于其他组。结果表明, 噪音对杂交鲟摄食速率、游泳速率及空间分布影响显著, 改变了其肠道微生物组成和占比, 影响了其氨基酸代谢等多条生命活动相关通路。实验模拟了水下各类噪音源的混合噪音对杂交鲟行为和肠道微生物的影响, 为探讨杂交鲟的健康生态养殖和逆境生理响应机制提供基础资料。

     

    Abstract: In order to investigate the effects of underwater noise on behavior (swimming rate, feeding rate, spatial distribution) and gut microorganisms of sturgeon, hybridized sturgeon were exposed to noise (145±5) dB, 400 Hz for 0, 48h, 7d, 7d, and 14d, followed by 48h of recovery in an environment without stressful noise. The results showed that the swimming and feeding rates of hybrid sturgeon were significantly reduced and the spatial distribution was changed after noise stimulation. At the beginning of the noise stimulation, the hybrid sturgeon gathered on the side away from the noise source, but gradually approached the noise source after 3min. The microbial composition was significantly different from the other groups at 7d of noise stress. There was no significant effect of noise on the abundance of gut microorganisms in hybrid sturgeon. Differences in the dominant populations of gut microorganisms existed in each group at different time periods and the dominant populations changed over time. The results of the above microbiological analysis showed that “cell signaling processes” “carbohydrate transport” and “amino acid transport and metabolic functions” were significantly lower than those of the other groups at 48h and 7d of noise stress as predicted by COG. The results showed that noise had significant effects on the feeding rate, swimming rate, and spatial distribution of hybrid sturgeon, changing the composition and proportion of its gut microorganisms and affecting various vital life pathways, such as amino acid metabolism. This experiment simulated the mixed noise of various underwater noise sources and explored their effects on the behavior and gut microorganisms of hybrid sturgeon for the first time, which can provide basic information for the in-depth exploration of healthy ecological breeding and physiological response mechanisms to adversity of hybrid sturgeon.

     

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