title: Toxicity of copper, lead, and cadmium on the motility of two marine microalgae Isochrysis galbana and Tetraselmis chui.
abstract: Computer assisted movement tracking was used to characterize the motility of two marine microalgae, Isochrysis 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 I. galbana and T. chui. Based on relative motile percentage data, the median effective concentration (EC50) of Cu on the motility of I. galbana and T. chui was 31.4 and 1.3 micromol/L, respectively, while for Pb it was 37.8 and 10.9 micromol/L and for Cd it was 121.6 and 37.8 micromol/L, respectively. Compared to I. 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.
authors.affiliation: College of Animal Sciences, Zhejiang University, Hangzhou 310029, China. guangxu_liu@4u.edu.cn
authors.forename: Guangxu
authors.initials: G
authors.lastname: Liu
authors.forename: Xueliang
authors.initials: X
authors.lastname: Chai
authors.forename: Yanqing
authors.initials: Y
authors.lastname: Shao
authors.forename: Lihua
authors.initials: L
authors.lastname: Hu
authors.forename: Qilang
authors.initials: Q
authors.lastname: Xie
authors.forename: Hongxi
authors.initials: H
authors.lastname: Wu
mesh_terms: D002104:Cadmium / Q000633:toxicity*; D003300:Copper / Q000633:toxicity*; D007854:Lead / Q000633:toxicity*; D008386:Marine Biology; D058086:Microalgae / Q000145:classification / Q000187:drug effects*; D013045:Species Specificity
chemical_list: D002104:Cadmium; D007854:Lead; D003300:Copper