敌百虫对奥尼罗非鱼幼鱼的急性毒性及安全浓度评价  

Acute toxicity and safety concentration evaluation of trichlorfon on juvenile tilapia(♀Oreochromis niloticus×♂O.aureus)

作　　者：辛桂瑜 侯小露[2] 梁敏敏 林文锋 邓少立 刘思妮 徐兰程 XIN Guiyu;HOU Xiaolu;LIANG Minmin;LIN Wenfeng;DENG Shaoli;LIU Sini;XU Lancheng(College of Biology and Pharmacy,Yulin Normal University,Yulin 537000,Guangxi,China;Guangxi Agricultural Vocational College,Nanning 530000,Guangxi,China)

机构地区：[1]玉林师范学院生物与制药学院,广西玉林537000 [2]广西农业职业技术学院,广西南宁530007

出　　处：《水产科技情报》2021年第1期45-50,共6页Fisheries Science & Technology Information

基　　金：广西高校中青年教师基础能力提升项目(2017KY0547,2017KY0551,2017KY1137)。

摘　　要：为研究敌百虫对奥尼罗非鱼幼鱼的急性毒性效应,采用96 h半静水式生物毒性试验方法,在水温(23.5±2.0)℃,溶解氧>5 mg/L的条件下,分别检测在曝气自来水(pH为6.5)和池塘水(pH为8.5)中敌百虫对奥尼罗非鱼幼鱼的急性毒性效应。结果显示:在曝气自来水中,敌百虫对奥尼罗非鱼幼鱼24、48、72、96 h的半致死质量浓度分别为3.68、3.31、2.05、1.57 mg/L,安全质量浓度为0.157 mg/L;在池塘水中,敌百虫对奥尼罗非鱼幼鱼24、48、72、96 h的半致死质量浓度分别为0.35、0.29、0.17、0.13 mg/L,安全质量浓度为0.013 mg/L。试验结果表明,在池塘水中敌百虫对奥尼罗非鱼幼鱼的毒性比在曝气自来水条件下强。The acute toxicities of trichlorfon on juvenile tilapia(♀Oreochromis niloticus×♂O.aureus)cutured in aerated tap water(pH=6.5)and pond water(pH=8.5)were studied at water temperature of(23.5±2.0)℃and dissolved oxygen above 5 mg/L using a static bioassay test.The results showed that:(1)Under the condition of aerated tap water,the median lethal concentration(LC 50)of trichlorfon on juvenile tilapia was 3.68,3.31,2.05 and 1.57 mg/L at 24 h,48 h,72 h and 96 h,respectively,and its safe concentration(SC)was 0.157 mg/L;(2)Under the condition of pond water,the LC 50 of trichlorfon on juvenile tilapia was 0.35,0.29,0.17 and 0.13 mg/L at 24 h,48 h,72 h and 96 h,respectively,and its SC was 0.013 mg/L.The results showed that the toxicity of trichlorfon on juvenile tilapia cultured in pond water was stronger than that on juvenile tilapia cultured in aerated tap water.

关 键 词：敌百虫 奥尼罗非鱼 半致死浓度 安全浓度 急性毒性 

分 类 号：S94[农业科学—水产养殖]