Bacterial communities associated with hydromedusa Gonionemus vertens in different regions in Chinese coastal waters
Bacterial communities associated with hydromedusa Gonionemus vertens in different regions in Chinese coastal waters
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DOI：
10.1007/s00343-021-1036-7
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发表时间：
2022-04-29
影响因子：
1.6
通讯作者：
Dong，Zhijun
中科院分区：
文献类型：
--
作者：
Hao，Wenjin;Wang，Lei;Dong，Zhijun
刺胞水母中的细菌群落可能对许多重要的水产养殖物种有害，因为它们可能是细菌病原体的关键载体。然而，我们对养殖池塘中与水母相关的细菌群落及其在水产养殖物种调控中的潜在作用的了解仍不清楚。本研究利用细菌16S rRNA基因序列分析技术，对水螅水母Gonionemus vertensin海参养殖池和自然海洋环境中细菌群落组成及变化进行了研究。G.黄、渤海养殖池塘中的藻体与周围海水环境中的藻体相比，其组成有显著差异。此外，与G.黄海养殖池塘和自然海洋环境中的vertens具有相似的多样性和组成。在三个地点发现了31种独特的细菌生物标志物。主要群落中Kiloniellales、Octadecabacter、Polynucleotibacter和Polaribacter的丰度较高，与环境信息处理有关。候选病原体如弧菌目和衣原体目具有显著低的相对丰度（<1%）。水母的毒液被认为是对水产养殖业造成损害的原因。该研究为评估刺胞动物相关细菌群落对池塘水产养殖的影响以及对海洋生态系统物质循环和能量流动的影响提供了重要数据。
Bacteria communities in cnidarian jellyfish can be harmful to many important aquaculture species, as they can be key vectors of bacterial pathogens. However, our knowledge of bacterial communities associated with jellyfish in culture ponds and their potential roles in the regulation of aquaculture species remains unclear. In this study, sequencing based on the bacterial 16S rRNA gene was used to investigate the composition and variation of the bacterial communities associated with hydromedusaGonionemus vertensin sea cucumber culture ponds and natural marine environment. The associated bacterial communities ofG. vertensfrom the culture ponds in the Yellow Sea and Bohai Sea had significantly different compositions, when compared with those from ambient seawater environment. Furthermore, bacterial communities associated withG. vertenshad similar diversity and composition in culture ponds and natural marine environment in the Yellow Sea. There were 31 unique bacterial biomarkers identified in three locations. The major communities were highly abundant in Kiloniellales,Octadecabacter, Polynucleobacter, andPolaribacter, and are related to the environmental information processing. Pathogen candidates such as Vibrionales and Chlamydiales had notably low relative abundances (<1%). The venom of the jellyfish was considered responsible for damage to the aquaculture. This study provides important data to help assess the impact of cnidarians-associated bacterial communities on pond aquaculture and the influences on material cycling and energy flow in marine ecosystems.