Ecotoxicological Effects of Trace Metal Pollution on Oysters in Estuarine Environments

基于对我国河口地区重金属污染日益加剧、贝类资源衰退现象的关注以及双壳类动物在河口生态系统功能维持和重金属污染监测中的重要性，本论文以我国南方河口地区典型的双壳类动物—香港牡蛎（Crassostreahongkongensis）和熊本牡蛎（Crassostreasikamea）为研究对象。首先，考察了不同重金属污染历史的河口环境中水体和牡蛎体内重金属含量的季节变化规律，并分析了其主控因素，进而探讨了牡蛎作为河口地区重金属污染指示生物的可行性。其次，研究了长期重金属暴露对河口地区牡蛎种群繁殖的影响，牡蛎的重金属解毒机制及牡蛎重金属暴露历史对其后代金属耐受性的影响，明确了河口污染环境中牡蛎种群的繁殖...At present, trace metal pollution has become increasing serious in many estuaries of China, which results in deterioration of shellfish resources. Bivalves as the dominant filter-feeders play an important role in keeping ecological balance of estuarine ecosystem and in biomonitoring of trace metal pollution. In this study, we studied two common oyster species, Crassostrea hongkongensis and Crassos...学位：理学博士院系专业：海洋与地球学院_海洋生物学学号：2242011015363