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首页> 美国卫生研究院文献>Journal of Insect Science >Pyrethroid Exposure Reduces Growth and Development of Monarch Butterfly (Lepidoptera: Nymphalidae) Caterpillars
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Pyrethroid Exposure Reduces Growth and Development of Monarch Butterfly (Lepidoptera: Nymphalidae) Caterpillars

机译：拟除虫菊虫暴露减少了帝王蝶的生长和发育（鳞翅目：Nymphalidae）毛毛虫

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Insecticide exposure has been identified as a contributing stressor to the decline in the North American monarch butterfly Danaus plexippus L. (Lepidoptera: Nymphalidae) population. Monarch toxicity data are currently limited and available data focuses on lethal endpoints. This study examined the 72-h toxicity of two pyrethroid insecticides, bifenthrin and β-cyfluthrin, and their effects on growth and diet consumption. The toxicity of bifenthrin to caterpillars was lower than β-cyfluthrin after 72 h. Survival was the most sensitive endpoint for bifenthrin, but diet consumption and caterpillar growth were significantly reduced at sublethal levels of β-cyfluthrin. Using AgDRIFT spray drift assessment, the aerial application of bifenthrin or β-cyfluthrin is predicted to pose the greatest risk to fifth-instar caterpillars, with lethal insecticide deposition up to 28 m for bifenthrin and up to 23 m for β-cyfluthrin from treated edges of fields. Low boom ground applications are predicted to reduce distances of lethal insecticide exposure to 2 m from the treated field edge for bifenthrin and β-cyfluthrin. Growth and survival of fifth-instar monarch caterpillars developing within the margins of a treated field may be significantly impacted following foliar applications of bifenthrin or β-cyfluthrin. These findings provide evidence that pyrethroid insecticides commonly used for soybean pest control are a potential risk to monarch caterpillars in agricultural landscapes.
机译：杀虫剂暴露已被确定为北美君主蝴蝶达纳葡萄兰葡萄球菌（Lepidoptera：Nymphalidae）人口的趋势的贡献压力源。帝王毒性数据目前有限，可用的数据侧重于致命的终点。本研究检测了两种拟除虫菊酯杀虫剂，比赛林氏素和β-Cyfluthrin的72小时毒性，以及它们对生长和饮食消耗的影响。 72小时后，比芬林对毛毛虫的毒性低于β-cyfluthrin。生存率是比芬林最敏感的终点，但在β-Cyfluthrin的核心水平下饮食消耗和毛虫生长显着降低。使用Agdrift喷雾漂移评估，预计Bifthrin或β-Cyfluthrin的空中应用预计将为第五龄毛细胞的风险最大，致命杀虫剂沉积高达28μm的β-cyfluthrin从经处理的边缘到达23μm领域。预计低轰隆的地面应用，以减少致命杀虫剂暴露于2米的距离，从处理的田间边缘和β-cyfluthrin。在经过处理领域的边缘内发育的第五龄甲基毛细胞的生长和存活可能会在叶蛋白或β-cyfluthrin的叶面应用后显着影响。这些发现提供了常用于大豆害虫控制的拟除虫菊酯杀虫剂是农业景观中君主毛虫的潜在风险。

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