4 种消毒剂对大珠母贝幼贝的急性毒性试验
Acute toxicity test of four disinfectants to juvenile Pinctada maxima
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摘要: 研究了戊二醛、二溴海因、蛋氨酸碘和次氯酸钙等4 种消毒剂对大珠母贝（Pinctada maxima）幼贝的急性毒性，结果表明，毒性大小依次为次氯酸钙> 二溴海因> 蛋氨酸碘> 戊二醛，24 h 半致死质量浓度（LC50）分别为13.05、27.49、53.20、67.36 mg/L，48 h LC50 分别为10.15、9.35、29.27、35.58 mg/L，安全浓度SC 分别为1.86、0.32、2.66、7.52 mg/L。分析认为，由于戊二醛毒性相对较小，且在其安全浓度以下可获得较好的消毒效果，因此在大珠母贝幼贝的养殖过程中，推荐使用戊二醛作为常用消毒剂，二溴海因和蛋氨酸碘应谨慎使用，次氯酸钙不推荐使用。Abstract: The acute toxicity of glutaraldehyde，dibromohydantoin，methionine iodine and calcium hypochlorite to juvenile Pinctada maxima was studied. The results showed that the order of toxicity was calcium hypochlorite> dibromohydantoin> methionine iodine> glutaraldehyde，and the median lethal concentrations（ LC50） of above disinfectants were 13.05 mg/L，27.49 mg/L，53.20 mg/L and 67.36 mg/L respectively in 24h，and the LC50 were 10.15 mg/L，9.35 mg/L，29.27 mg/L and 35.58 mg/L respectively in 48h；and their SC（ safe concentration） were 1.86 mg/L，0.32 mg/L，2.66 mg/L and 7.52 mg/L respectively. We can use glutaraldehyde to disinfect P. maxima under safe concentration，but should not use calcium hypochlorite，and can use dibromohydantoin and methionine iodine carefully.
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