Safety Assessment and Acute Toxicity of Four Kinds of Heavy Metal Ions to Manila Clam Ruditapes philippinarum
CHEN Zhi1, WEI Chengchen2, HU Fengxiao2, HUANG Jian3, LI Weipeng2, LIAN Chenyang1
1. Freshwater Fishery Research Institute of Fujian Province, Fuzhou 350002, China; 2. Fujian Agriculture and Forestry University, Fuzhou 350002, China; 3. Fisheries and Aquaculture Technology Extension Station of Fujian Province, Fuzhou 350002, China
Abstract：The acute toxic effects of four kinds of heavy metal ions on Manila clam Ruditapes philippinarum were investigated by toxicology experiment, in order to evaluate the tolerance of Manila clam to Cd2+, Mn2+, Zn2+ and Cu2+. The results showed that the mortality of Manila clam was positively proportional to the concentration of heavy metal ions, with significant dose-response relationship. The medium lethal concentration (LC50) values of Cd2+ treatment was 38.62 mg/L for 24 h, 29.83 mg/L for 48 h, 8.11 mg/L for 72 h, and 2.67 mg/L for 96 h with safe concentration of 0.03 mg/L, whereas the LC50 of Mn2+ was 712.58 mg/L for 24 h, 421.57 mg/L for 48 h,188.74 mg/L for 72 h, and 61.27 mg/L for 96 h with safe concentration of 0.61 mg/L. The LC50 of Zn2+ was 141.27 mg/L for 24 h,72.20 mg/L for 48 h, 34.91 mg/L for 72 h and 21.57 mg/L for 96 h with safe concentration of 0.22 mg/L. The LC50 of Cu2+ was 29.88 mg/L for 24 h, 12.06 mg/L for 48 h,3.62 mg/L for 72 h and 0.79 mg/L for 96 h with safe concentration of 0.01 mg/L. The results showed that the toxicity of four heavy metal ions to Manila clam was in the order of Cu2+>Cd2+>Zn2+>Mn2+, the lower safe concentration of Cu2+ than the standard of fishery water quality, so special attention should be paid to nursery and breeding processes.
陈志, 魏成陈, 胡丰晓, 黄健, 李伟鹏, 连晨阳. 4种重金属离子对菲律宾蛤仔的急性毒性及安全评价[J]. 水产科学, 2021, 40(4): 571-576.
CHEN Zhi, WEI Chengchen, HU Fengxiao, HUANG Jian, LI Weipeng, LIAN Chenyang. Safety Assessment and Acute Toxicity of Four Kinds of Heavy Metal Ions to Manila Clam Ruditapes philippinarum. 水产科学, 2021, 40(4): 571-576.
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2021, Vol. 40 
