Li Ying, Wang Yunfei, Zhang Jihong, Sun Yiru, Kong Jie
State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong, 266071, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao Marine Science and Technology Center, Qingdao, Shandong, 266237, China.
State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong, 266071, China; College of Fisheries and Life Science, Dalian Ocean University, Liaoning, Dalian, 116023, China.
Mar Environ Res. 2025 Oct;211:107403. doi: 10.1016/j.marenvres.2025.107403. Epub 2025 Jul 28.
The high-salinity pond aquaculture model has been widely accepted for its advantages in utilizing saline-alkali soil and enhancing shrimp quality. Plankton communities play critical roles in aquaculture ecosystems, but their responses to salinity gradients and impacts on Penaeus vannamei growth remain underexplored. This study investigated plankton dynamics, environmental drivers, and shrimp performance across three salinities in Binzhou, China. Throughout the aquaculture process, phytoplankton community composition showed a clear succession pattern, shifting from diverse species to a Skeletonema-dominated structure with gradually increasing species abundance. In contrast, zooplankton diversity and abundance decreased over time. Redundancy Analysis (RDA) and Variance Partitioning Analysis (VPA) revealed that salinity, temperature, and dissolved inorganic nitrogen (DIN) were closely linked to dominant species. The study elucidated the functional traits of plankton communities mediated by salinity, showing that medium salinity (38 ± 3.58 ‰) fostered a mutualistic diatom-copepod relationship. This mutualism enhanced dissolved oxygen and supported 80.2 % higher shrimp biomass compared to high-salinity systems. These findings provide insights into the ecological interactions between plankton and environmental factors in aquaculture systems and offer guidance for optimizing shrimp farming practices, such as maintaining medium salinity levels to foster a balanced plankton community, which can enhance water quality and support healthy shrimp growth.
高盐度池塘养殖模式因其在利用盐碱地和提高对虾品质方面的优势而被广泛接受。浮游生物群落对水产养殖生态系统至关重要，但其对盐度梯度的响应以及对凡纳滨对虾生长的影响仍未得到充分研究。本研究调查了中国滨州三个盐度水平下的浮游生物动态、环境驱动因素及对虾生长性能。在整个养殖过程中，浮游植物群落组成呈现出明显的演替模式，从物种多样逐渐转变为以骨条藻为主导的结构，物种丰度逐渐增加。相比之下，浮游动物的多样性和丰度随时间下降。冗余分析（RDA）和方差分解分析（VPA）表明，盐度、温度和溶解无机氮（DIN）与优势物种密切相关。该研究阐明了盐度介导的浮游生物群落功能特征，表明中等盐度（38 ± 3.58‰）促进了硅藻-桡足类的互利共生关系。与高盐度系统相比，这种互利共生关系增加了溶解氧，并使对虾生物量提高了80.2%。这些发现为水产养殖系统中浮游生物与环境因素之间的生态相互作用提供了见解，并为优化对虾养殖实践提供了指导，例如保持中等盐度水平以促进浮游生物群落平衡，从而改善水质并支持对虾健康生长。
