...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental toxicology and chemistry >Neonicotinoid Insecticides from a Marine Perspective: Acute and Chronic Copepod Testing and Derivation of Environmental Quality Standards
【24h】

Neonicotinoid Insecticides from a Marine Perspective: Acute and Chronic Copepod Testing and Derivation of Environmental Quality Standards

机译：来自海洋视角的新烟碱蛋白杀虫剂：急性和慢性桡足蛋白软糖测试和环境质量标准的推导

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相关主题

摘要

Neonicotinoid insecticides have become of global concern for the aquatic environment. Harpacticoid copepods are among the organisms most sensitive to neonicotinoids. We exposed the brackish copepod Nitocra spinipes to 4 neonicotinoid insecticides (clothianidin, imidacloprid, thiacloprid, and thiamethoxam) to investigate acute toxicity on adults (96-h exposure) and effects on larval development (7-d exposure). We used these results in combination with publicly available ecotoxicity data to derive environmental quality standards (EQS). These EQS were ultimately used in a single-substance and mixture risk assessment for the Belgian part of the North Sea. Acute toxicity testing revealed that immobilization is a more sensitive endpoint than mortality, with 96-h median effect concentration (EC50) values of 6.9, 7.2, 25, and 120 mu g L-1 for clothianidin, thiacloprid, imidacloprid, and thiamethoxam, respectively. In addition, the larval development tests resulted in 7-d no-observed-effect concentrations (NOECs) of 2.5, 2.7, 4.2, and 99 mu g L-1 for clothianidin, thiacloprid, imidacloprid, and thiamethoxam, respectively. The derived saltwater annual average (AA-)EQS were 0.05, 0.0048, 0.002, and 0.016 mu g L-1 for clothianidin, thiacloprid, imidacloprid, and thiamethoxam, respectively. Finally, the risk characterization revealed some exceedances of the AA-EQS in Belgian harbors for imidacloprid (number of exceedances, n = 2/4), for thiacloprid (n = 1/4), for thiamethoxam (n = 1/4), and for the mixture of the 4 neonicotinoids (n = 4/4), but not at the open sea. At the open sea site, the toxic unit sums relative to the AA-EQS were 0.72 and 0.22, suggesting no mixture risk, albeit with a relatively small margin of safety. Including short-term EC10 (96-h) values of N. spinipes for the AA-EQS derivation led to a refinement of the AA-EQS for clothianidin and thiamethoxam, suggesting their use for the AA-EQS derivation because one of the overarching goals of the definition of EQS is to protect species at the population level. Environ Toxicol Chem 2021;00:1-15. (c) 2021 SETAC
机译：Neonicotinoid杀虫剂已成为水生环境的全球担忧。 Harpacticoid Copepods是对新烟碱蛋白最敏感的生物体中。我们将咸麻蛋白酶蛋白质杀虫剂暴露于4个新烟碱蛋白杀虫剂（Clothianidin，ImidaCloprid，Thiaclokoprid和Thiamethoxam），以研究成人（96-H暴露）的急性毒性和对幼虫发育的影响（7-D暴露）。我们将这些结果与公开可用的生态毒性数据结合使用以推导环境质量标准（EQS）。这些等式最终用于北海比利时部分的单一物质和混合风险评估。急性毒性测试显示，固定化是比死亡率更敏感的终点，96-h中值浓度（EC50）值为6.9,7.2,25和120μg，分别为粉底素，噻虫草，吡虫啉和祖紫红素。此外，幼虫的开发试验导致7-D无观察到的浓度为2.5,2.7,4.2和>99μg，>99μg，>99μgl-1，分别用于薄铅蛋白，噻菌药，吡虫啉和硫胺素。衍生的咸水年平均值（AA-）平均值为3.05,00048,000和0.016μg，分别用于衣物，噻虫蛋白，噻菌药，吡虫啉和祖紫红色。最后，风险表征揭示了比利时港的AA-eqs的一些超标于吡虫啉（n = 1/4），用于噻虫草（n = 1/4），并且对于4个新烟烟碱（n = 4/4）的混合物，但不在海洋。在张开海网站上，毒性单位相对于AA-eqs的总和为0.72和0.22，表明没有混合风险，尽管安全的安全裕度相对较小。包括AA-EQS衍生物的N.Sumpipes的短期EC10（96-H）值导致SAA-EQS的细化为衣物和祖昔昔单抗，这表明他们对AA-EQS推导器的用途，因为其中一个总体目标EQS的定义是保护人口层面的物种。环境毒素化学2021; 00：1-15。 （c）2021 Setac

著录项

获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号