Acute toxicity and biodegradation of endosulfan by the polychaeta Perinereis aibuhitensis

Acute toxicity and biodegradation of endosulfan by the polychaeta Perinereis aibuhitensis in an

indoor culture

KANG Kyoung Ho;ZHANG Litao;ZHANG Zhifeng;SUI Zhenghong;HUR Junwook

【期刊名称】《中国海洋湖沼学报（英文版）》 【年(卷),期】2013(031)001

【摘要】The polychaete Perinereis aibuhitensis,a key species in estuarine ecosystems,can improve the culture condition of sediment.Endosulfan is an organochlorine pesticide used globally to control insects and mites； however,it is a source of pollution in aquaculture as a result of nunoff or accidental release.In this study,we evaluated the toxicity of endosulfan to

polychaeta

and

its

ability

to

improve

polluted

sediment.Specifically,the effects of a series of endosulfan concentrations (0,1.25,2.5,5,10,15,and 20 mg/L) were investigated,and the results indicated that the 24-h median lethal concentration (24-h LC50) was 55.57 mg/L,while the 48-h median lethal concentration (48-h LCs0) was 15.56 mg/L,and the safe concentration was about 1.556 mg/L.In a 30-d exposure

experiment,the

animal

specimen

could

decompose

endosulfan effectively while improving endosulfan-polluted aquatic sediment.

【总页数】6页(75-80) 【关键词】