海洋科学2017，Vol.41Issue(10)：102-108,7.DOI:10.11759/hykx20170426001
敌百虫对两种赤潮微藻生长的毒性效应研究
Toxic effects of trichlorfon on the growth of two microalgae,Chattonella marina and Scrippsiella trochoidea
摘要
Abstract
Trichlorfon is an important organophosphate insecticide and has been widely used for treating various parasitic infestations in aquaculture.This study analyzed the effects of trichlorfon on the growth of Chattonella marina and Scrippsiella trochoidea through 72-h and 25-d growth tests.The aim was to estimate the toxic effects of trichlorfon on marine phytoplankton.Results showed that high concentrations of trichlorfon significantly inhibited the growth of both microalgae in the 72-h test.However,low concentrations had no significant influence on the growth of the microalgae.The 72-h EC50 values of trichlorfon for C.marina and S.trochoidea were 32.1 and 22.1 mg/L,respectively.In the 25-d test,the algal cells were not able to survive at trichlorfon concentrations ＞25 mg/L after ～7-to 9-d exposure,while the growth under 1 mg/L was comparable with that of the control.At moderate concentrations (5 and 10 mg/L),the growth was enhanced during the late period of exposure in the 25-d test.These results suggest that background concentrations of trichlorfon in aquatic environments would not inhibit the growth of phytoplankton;however,the growth might be stimulated after a period of application,which might thus increase the risk of algal blooms.关键词
敌百虫/海洋卡盾藻/锥状斯氏藻/毒性/生长抑制/微藻Key words
trichlorfon/Chattonella marina/Scrippsiella trochoidea/toxicity/growth inhibition/microalgae分类
资源环境引用本文复制引用
王朝晖,钟文聪,廖姿蓉..敌百虫对两种赤潮微藻生长的毒性效应研究[J].海洋科学,2017,41(10):102-108,7.基金项目
国家自然科学基金项目(41476132)National Natural Science Foundation of China,No.41476132 （41476132）
