海洋科学Issue(10)：94-100,7.DOI:10.11759/hykx20140902002
亚热带虾池条纹小环藻铜和锌富集及其动力学研究
Enrichments and Accumulation kinetics of Copper and Zinc byCyclotella striatain Subtropical Shrimp Ponds
摘要
Abstract
Copper (Cu) and zinc (Zn) pollution is common in shrimp farming. Understanding the accumulation pathway of Cu and Zn is important for maintaining a healthy aquaculture environment. In this study, we investi-gated the effect of different exposure time and environmental conditions (temperature, salinity and light) on the enrichments of Cu and Zn in Cyclotella striata. Results showed that Cu and Zn enrichments in C.striata underwent a succession process of fast adsorption, slow adsorption and saturation phase. The fast adsorption phase occurred during the first 30 min of the experiment, with the adsorption rate as high as 70%. The slow adsorption of Cu and Zn occurred at 4 h and 6 h, respectively, both of the adsorption rates reached 90%, followed by the saturation phase. The Cu and Zn enrichments inC. striata were significantly affected by temperature, salinity and illumination (P< 0.01). The optimal environmental condition for Cu enrichments inC. striata was 25~35℃ for temperature, 20~35 for salinity, and 40~100μmol/(m2·s) for light while optimal environmental conditions for Zn enrichment were 15~35℃ for temperature, 25~30 for salinity, and 40~100μmol/(m2·s) for light. The Cu and Zn enrichments reached saturation when the light level reached 40μmol/(m2·s). In conclusion,C. striata has high capacities for heavy metal absorption.关键词
条纹小环藻(Cyclotella striata)/虾池/铜/锌/富集/环境条件Key words
Cyclotella striata/shrimp pond/copper/zinc/enrichment/environmental conditions分类
农业科技引用本文复制引用
李长玲,黄翔鹄,江东..亚热带虾池条纹小环藻铜和锌富集及其动力学研究[J].海洋科学,2015,(10):94-100,7.基金项目
广东省专业镇中小微企业报务平台建设项目(2012B040500025) （2012B040500025）
广东省海洋渔业科技与产业发展专项(A201508B08) （A201508B08）
