Scholarlink

<p>Owing to the extreme rainfall and evaporation events under the changing climate, coastal zones are experiencing salinity fluctuations that stress aquatic organisms. However, the biological consequences of ongoing alteration in salinity levels on euryhaline organisms remain inconclusive. Herein, we sought to uncover how variation in salinity level adversely alters the bacterioplankton community, the gut microbiota of euryhaline shrimp <i>Penaeus monodon</i>, and subsequent shrimp disease risk. To mimic the extreme weather that induces abrupt changes in coastal water salinity, three salinity levels (10, 20, and 30) were selected to investigate the differences in shrimp gut microbiota using bacterial 16S rRNA gene sequencing. Results shows that salinity level and days post experiment (dpe) respectively constrained 45.9% and 13.0% of the variance in the gut bacterial communities. Particularly, abnormal salinity levels accelerated temporal turnover rate, disrupted gut network stability, augmented average variation degree, and increased pathogenic potential in the gut microbiota of shrimp reared at 10 and 30 salinities compared with 20 salinity controls. These changes were accompanied with the shifts in the gut microbiota-mediated functions, especially the compromised immunity and elevated infectious diseases potentials, thereby increasing shrimp disease risk. In addition, abnormal salinity levels increased the role of homogeneous selection governing the gut microbiota. After excluding the dpe-effect, we screened 35 gut salinity-discriminatory taxa that quantitatively discriminated the salinity levels where shrimp were reared, with overall accuracy of 91.1%. Collectively, abnormal salinity levels profoundly disrupt the structure, stability, assembly, and functions of the gut microbiota, which in turn increased disease risk in shrimp. In addition, gut symbionts sensitively responded to the changes in external salinity level. These findings deepened our understanding on the biological consequence of abnormal salinity levels on shrimp health.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Abnormal salinity levels increase shrimp Penaeus monodon disease risk: insights from the disrupted gut microbiota

  • 期刊论文

  • 发表日期：

    2025年5月24日

查看全文
  • Yufeng Wang,
  • Yangming Lu,
  • Qiongfen Qiu,
  • Jinbo Xiong

摘要

Owing to the extreme rainfall and evaporation events under the changing climate, coastal zones are experiencing salinity fluctuations that stress aquatic organisms. However, the biological consequences of ongoing alteration in salinity levels on euryhaline organisms remain inconclusive. Herein, we sought to uncover how variation in salinity level adversely alters the bacterioplankton community, the gut microbiota of euryhaline shrimp Penaeus monodon, and subsequent shrimp disease risk. To mimic the extreme weather that induces abrupt changes in coastal water salinity, three salinity levels (10, 20, and 30) were selected to investigate the differences in shrimp gut microbiota using bacterial 16S rRNA gene sequencing. Results shows that salinity level and days post experiment (dpe) respectively constrained 45.9% and 13.0% of the variance in the gut bacterial communities. Particularly, abnormal salinity levels accelerated temporal turnover rate, disrupted gut network stability, augmented average variation degree, and increased pathogenic potential in the gut microbiota of shrimp reared at 10 and 30 salinities compared with 20 salinity controls. These changes were accompanied with the shifts in the gut microbiota-mediated functions, especially the compromised immunity and elevated infectious diseases potentials, thereby increasing shrimp disease risk. In addition, abnormal salinity levels increased the role of homogeneous selection governing the gut microbiota. After excluding the dpe-effect, we screened 35 gut salinity-discriminatory taxa that quantitatively discriminated the salinity levels where shrimp were reared, with overall accuracy of 91.1%. Collectively, abnormal salinity levels profoundly disrupt the structure, stability, assembly, and functions of the gut microbiota, which in turn increased disease risk in shrimp. In addition, gut symbionts sensitively responded to the changes in external salinity level. These findings deepened our understanding on the biological consequence of abnormal salinity levels on shrimp health.