甲胺磷、90-消毒剂对欧洲鳗仔鳗的急性毒性作用  

Acute Toxicity Effect of Methamidophos and 90 Disinfectant on European Eel Larvae

作　　者：房迎春[1,2,3] 廖城珍 潘连德 

机构地区：[1]沈阳大学农学系 [2]广西壮族自治区贵港市水产技术推广站 [3]上海水产大学养殖系

出　　处：《水产科技情报》1999年第4期155-158,161,共5页Fisheries Science & Technology Information

摘　　要：采用静水实验法进行甲胺磷乳剂、９０－消毒剂对欧洲鳗（ＡｎｇｕｉｌａａｎｇｎｉｌａＬ．）仔鳗急性毒性试验研究。结果表明：在试验浓度３２～５６ｍｇ／Ｌ范围内，欧洲鳗仔鳗中毒死亡发生在３０～４４ｈ，对甲胺磷乳剂急性中毒死亡的时间集中且持续短促；甲胺磷乳剂对欧洲鳗仔鳗的半致死浓度（４８ｈ－ＬＣ５０）为３５．９ｍｇ／Ｌ，安全浓度（ＳＣ）为３．６ｍｇ／Ｌ。欧洲鳗仔鳗养殖水源和池塘甲胺磷的最大接受量（ＭＡＴＣ）不得超过１．８ｍｇ／Ｌ。在浓度１０．０～３５．０ｍｇ／Ｌ范围内，９０－消毒剂对欧洲鳗仔鳗急性中毒反应表现出药物的强烈刺激性和腐蚀性；４８ｈ－ＬＣ５０为２０．９ｍｇ／Ｌ，ＳＣ为２．１ｍｇ／Ｌ。中毒死亡发生在２～４８ｈ，集中在４～１２ｈ。９０－消毒剂不宜用来给鱼类幼体作为消毒剂和防治细菌性疾病的外用药物，全池泼洒浓度不得超过２ｍｇ／Ｌ；作为清塘药物，使用浓度为３５ｍｇ／Ｌ以上。The acute toxicity tests of methamidophos emulsion ( 50% ) and 90 disinfectant to European eel ( Anguilla anguilla L. ) larvae from France were carried out by using static test method. The results indicated that when the concentration of methamidophos reached 32～56 mg/L, the mortality of European eel larvae occurred within very short time, which was from the 30th to 48th hour. And the values of 48 h median lethal concentration ( LC 50 ) and safe concentration ( SC ) of methamidophos for European eel larvae were 35.9 mg/L and 3.6 mg/L respectively. The estimated maximum acceptable toxicant concentration ( MATC ) of methamidophos in culture headwaters and ponds was not more than 1.8 mg/L. And when the concentration of 90 disinfectant reached 10～35 mg/L, the mortality of European eel larvae occurred from the 2 nd to 48th hour, mainly from 4th to 12th hour. The values of 48 h LC 50 and SC were 20.9 mg/L and 2.1 mg/L respectively. 90 disinfectant was not suitable to be used as a disinfectant to fish larvae. To be used externally to prevent bacteria, its concentration should not be more than 2 mg/L; as a pond clearing drug, its concentration should be more than 35 mg/L.

关 键 词：欧洲鳗 仔鳗 静水实验 甲胺磷 消毒剂 急性毒性 

分 类 号：S943.223[农业科学—水产养殖]