Comparative analysis of bacterial communities and environmental interactions in seawater and saline-alkali aquaculture ponds for Scylla paramamosain in northern China

作者：Dongping Zhou, Yuanyuan Fu, Lei Liu, Weichuan Lin, Zhibin Lu, Yangfang Ye, Minglei Zhang · 发表于：Frontiers in Microbiology · 年份：2025 · DOI：10.3389/fmicb.2025.1589304 · 被引用次数：6 · 研究领域：Microbial Community Ecology and Physiology、Wastewater Treatment and Nitrogen Removal、Marine Bivalve and Aquaculture Studies

As the aquaculture capacity of S. paramamosain in southern China nears saturation, northern coastal regions, which are characterized by abundant water resources, ample feed availability, and favorable climatic conditions, have emerged as ideal areas for aquaculture expansion. This study investigates the aquatic environment of S. paramamosain cultured in seawater and saline-alkali ponds in northern China. Over the course of a five-month aquaculture experiment, water samples were collected from seawater and saline-alkali ponds and subsequently analyzed using 16S rRNA gene sequencing technology to examine the bacterial community composition and its relationship with physicochemical water quality parameters. Sensitive bacterial species were identified as well. The results revealed that seawater ponds exhibited higher salinity and dissolved oxygen levels, but lower pH, ammonia nitrogen, and nitrite nitrogen concentrations. In contrast, saline-alkali ponds exhibited elevated pH, ammonia nitrogen, and nitrite nitrogen levels, accompanied by reduced salinity and dissolved oxygen. Bacterial communities in seawater ponds demonstrated greater species richness, evenness, and diversity indices, whereas those in saline-alkali ponds were characterized by reduced diversity and distinct dominant bacterial groups. Redundancy analysis (RDA) identified salinity, pH, and dissolved oxygen as the principal environmental factors influencing bacterial community structure. Using the IndVal method, we ...