欢迎访问《中国农学通报》,

中国农学通报 ›› 2023, Vol. 39 ›› Issue (23): 121-126.doi: 10.11924/j.issn.1000-6850.casb2022-0693

所属专题: 生物技术 水产渔业

• 水产·渔业 • 上一篇    下一篇

灭多威对藻-溞-鱼典型水生食物链生物的急性毒性研究

孟顺龙1(), 陈锋2, 陈曦1, 李鸣霄1, 裘丽萍1, 李丹丹1, 宋超1, 范立民1, 陈家长1(), 徐跑1()   

  1. 1中国水产科学研究院淡水渔业研究中心/农业农村部淡水渔业和种质资源利用重点实验室,江苏无锡 214128
    2上海海洋大学水产科学国家级实验教学示范中心/农业农村部淡水水产种质资源重点实验室/农业农村部鱼类营养与环境生态研究中心,上海 201306
  • 收稿日期:2022-08-22 修回日期:2022-12-02 出版日期:2023-08-15 发布日期:2023-08-10
  • 作者简介:

    孟顺龙,男,1982年出生,研究员,博士生导师,博士,研究方向:环境毒理学、渔业环境保护、水产品质量安全风险评估。通信地址:214128 江苏省无锡市滨湖区雪浪街道山水东路9号 淡水渔业研究中心,Tel:0510-85559936,E-mail:

  • 基金资助:
    财政部和农业农村部项目“国家现代农业产业技术体系”(CARS-46); 国家重点研发计划项目“浅水湖泊生境修复技术与生态渔业模式示范”(2020YFD0900502)

Acute Toxicity Effects of Methomyl on Organisms in Typical Aquatic Food Chain of Green Algae-Daphnia Magna-Fish

MENG Shunlong1(), CHEN Feng2, CHEN Xi1, LI Mingxiao1, QIU Liping1, LI Dandan1, SONG Chao1, FAN Limin1, CHEN Jiazhang1(), XU Pao1()   

  1. 1Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences /Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture and Rural Affairs, Wuxi Jiangsu 214128
    2National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University /Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs /Centre for Research on Environmental Ecology and Fish Nutrition of the Ministry of Agriculture and Rural Affairs, Shanghai 201306
  • Received:2022-08-22 Revised:2022-12-02 Published:2023-08-15 Online:2023-08-10

摘要:

小球藻、大型溞和斑马鱼作为水生生态系统中第一、二和三营养级,是构成简单水生食物链的重要成员,参与了水生生态系统中的物质循环和能量流动。为了阐明灭多威对食物链上处于不同生态位的水生生物的毒性效应,采用半静态水质接触急性试验法研究了灭多威对小球藻、大型溞、斑马鱼的急性毒性。结果表明,灭多威对小球藻的96 h EC50为6.76 mg/L,对大型溞的24、48、96 h LC50分别为57.37、22.23、12.58 μg/L,对斑马鱼的24、48、96 h LC50分别为8.64、5.00、2.12 mg/L。根据农药毒性分级标准,农药灭多威在普通小球藻、大型溞、斑马鱼上分别表现为中毒性、极高毒性和高毒性,在自然环境下极易导致藻、溞、鱼急性中毒死亡。灭多威对小球藻、大型溞、斑马鱼的安全浓度分别为0.676 mg/L、1.26 μg/L、0.212 mg/L,其对上述水生生物的毒性大小顺序为:溞类>鱼类>藻类。

关键词: 灭多威, 急性毒性, 水生食物链, 小球藻, 大型溞

Abstract:

As the first, second and third trophic levels in the aquatic ecosystem, Chlorella vulgaris, Dqohnia magna, and Barchydanio rerio are important members of the simple aquatic food chain and participate in the material cycle and energy flow in the aquatic ecosystem. To elucidate the toxic effects of methomyl on aquatic organisms in different ecological niches along the food chain, the acute toxicity effects of methomyl on Chlorella vulgaris, Dqohnia magna, Barchydanio rerio had been done by using semi-static water contacting acute toxicity method. The results showed that the 96 h EC50 of methomyl to Chlorella vulgaris was 6.76 mg/L. The 24 h LC50, 48 h-LC50 and 96 h-LC50 of methomyl to Dqohnia magna were 57.37 μg/L, 22.23 μg/L and 12.58 μg/L, respectively. The 24 h LC50, 48h-LC50 and 96h-LC50 of methomyl to Barchydanio rerio were 8.64 mg/L, 5.00 mg/L and 2.12 mg/L, respectively. According to the grading standard of toxicity assessment for pesticide, methomyl was middle toxic to Chlorella vulgaris, extremely high toxic to Dqohnia magna, and high toxic to Barchydanio rerio, respectively. And therefore methomyl could cause the acute poisoning death of Chlorella vulgaris, Dqohnia magna and Barchydanio rerio in the natural environment. The safe concentrations of methomyl to Chlorella vulgaris, Dqohnia magna and Barchydanio rerio were 0.676 mg/L, 1.26 μg/L and 0.212 mg/L, respectively. And the toxicity of methomyl to Chlorella vulgaris, Dqohnia magna, Barchydanio rerio followed the order of Dqohnia magna> Barchydanio rerio> Chlorella vulgaris.

Key words: methomyl, acute toxicity, aquatic food chain, Chlorella vulgaris, Dqohnia magna