Toxicity of copper,lead,and cadmium on the motility of two marine microalgae Isochrysis galbana and Tetraselmis chui  

作　　者：Guangxu Liu Xueliang Chai Yanqing Shao Lihua Hu Qilang Xie Hongxi Wu 

机构地区：[1]College of Animal Sciences, Zhejiang University, Hangzhou 310029, China [2]Zhejiang Mariculture Research Institute, Wenzhou 325005, China [3]Zhejiang Key, Laboratory of Exploitation and Preservation of Costal Bio-resources, Wenzhou 325005, China

出　　处：《Journal of Environmental Sciences》2011年第2期330-335,共6页环境科学学报（英文版）

基　　金：supported by the National Department Public Benefit Research Foundation(No. nyhyzx07-047);the Research Project of Zhejiang Education Department(No. Y200909301);and the Open Fund of Zhejiang Key Laboratory of Exploitation and Preservation of Costal Bioresources(No. J2010002)

摘　　要：Computer assisted movement tracking was used to characterize the motility of two marine microalgae, lsochrysis galbana and Tetraselmis chui, and to investigate the toxicity of Cu, Pb, and Cd on motile percentage, curvilinear velocity, average path velocity, straight line velocity, linearity, straightness, and wobble. Except for motile percentage, all other motility parameters differed significantly between L galbana and T. chui. Based on relative motile percentage data, the median effective concentration （ECs0） of Cu on the motility of L galbana and T. chui was 31.4 and 1.3 gmol/L, respectively, while for Pb it was 37.8 and 10.9 ~tmol/L and for Cd it was 12 1.6 and 37.8 ~tmol/L, respectively. Compared to L galbana, T. chui was more sensitive to all tested metals. The toxic effect of the heavy metals on motility exhibited the following decreasing order for both species： Cu 〉 Pb 〉 Cd. Our results indicate that L galbana and T. chui motility is sensitive to heavy metals and can be used as an indicator for toxicology bioassays.Computer assisted movement tracking was used to characterize the motility of two marine microalgae, lsochrysis galbana and Tetraselmis chui, and to investigate the toxicity of Cu, Pb, and Cd on motile percentage, curvilinear velocity, average path velocity, straight line velocity, linearity, straightness, and wobble. Except for motile percentage, all other motility parameters differed significantly between L galbana and T. chui. Based on relative motile percentage data, the median effective concentration （ECs0） of Cu on the motility of L galbana and T. chui was 31.4 and 1.3 gmol/L, respectively, while for Pb it was 37.8 and 10.9 ~tmol/L and for Cd it was 12 1.6 and 37.8 ~tmol/L, respectively. Compared to L galbana, T. chui was more sensitive to all tested metals. The toxic effect of the heavy metals on motility exhibited the following decreasing order for both species： Cu 〉 Pb 〉 Cd. Our results indicate that L galbana and T. chui motility is sensitive to heavy metals and can be used as an indicator for toxicology bioassays.

关 键 词：COPPER LEAD cadmium MOTILITY lsochrysis galbana Tetraselmis chui 

分 类 号：Q949.2[生物学—植物学] TP391.41[自动化与计算机技术—计算机应用技术]