Acute toxicity and biodegradation of endosulfan by the polychaeta Perinereis aibuhitensis in an indoor culture |
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| Authors: | KANG Kyoung Ho ZHANG Litao ZHANG Zhifeng SUI Zhenghong HUR Junwook |
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| Institution: | 1. Department of Aquaculture, Chonnam National University, Yeosu, Korea
2. College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China |
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| Abstract: | 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 runoff 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 LC50) 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. |
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| Keywords: | endosulfan endosulfan sulfate environment restoration LC50 Perinereis aibuhitensis |
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