Risk assessment of imidacloprid use in forest settings on the aquatic macroinvertebrate community
Risk assessment of imidacloprid use in forest settings on the aquatic macroinvertebrate community
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DOI：
10.1002/etc.3887
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发表时间：
2017-11-01
影响因子：
4.1
通讯作者：
Bailey, Joseph K.
中科院分区：
文献类型：
--
作者：
Benton, Elizabeth P.;Grant, Jerome F.;Bailey, Joseph K.
在自然环境中很难评估单一杀虫剂的单独影响，因为许多流域存在多种污染物。吡虫啉用于抑制铁杉绵球蚜，Adelges tsugae（Annand）（半翅目：球蚜科），在森林中提供了一个难得的机会，以评估潜在的影响水生大型无脊椎动物在相对原始的景观。对大烟山国家公园（美国阿巴拉契亚山脉南部）9条溪流的水生无脊椎动物群落进行了研究。溪流流经铁杉保护区，在那里应用吡虫啉土壤浸泡处理来抑制铁杉绵球蚜。地点位于上游和下游的吡虫啉治疗。基线物种存在数据（前吡虫啉治疗）可从以前的样本收集在下游网站。下游和上游网站没有不同的许多社区措施。虽然成对的上游和下游网站的比较显示差异的多样性在7个流，更高的多样性被发现更经常在下游网站。大型无脊椎动物功能摄食组和生活习性之间的下游和上游网站相似。下游和基线流样品相似。虽然一些功能性摄食组和生活习性物种丰富度类别有所不同，但变化并不表明下游社区质量较差。根据美国环境保护署联邦限制规定，使用吡虫啉处理不会对水生大型无脊椎动物群落产生负面影响，这表明在森林环境中使用吡虫啉的风险较低。环境毒理化学2017;36：3108-3119。(c)2017年SETAC
The isolated effects of a single insecticide can be difficult to assess in natural settings because of the presence of numerous pollutants in many watersheds. Imidacloprid use for suppressing hemlock woolly adelgid, Adelges tsugae (Annand) (Hemiptera: Adelgidae), in forests offers a rare opportunity to assess potential impacts on aquatic macroinvertebrates in relatively pristine landscapes. Aquatic macroinvertebrate communities were assessed in 9 streams in Great Smoky Mountains National Park (southern Appalachian Mountains, USA). The streams flow through hemlock conservation areas where imidacloprid soil drench treatments were applied for hemlock woolly adelgid suppression. Sites were located upstream and downstream of the imidacloprid treatments. Baseline species presence data (pre-imidacloprid treatment) were available from previous sample collections at downstream sites. Downstream and upstream sites did not vary in numerous community measures. Although comparisons of paired upstream and downstream sites showed differences in diversity in 7 streams, higher diversity was found more often in downstream sites. Macroinvertebrate functional feeding groups and life habits were similar between downstream and upstream sites. Downstream and baseline stream samples were similar. While some functional feeding group and life habit species richness categories varied, variations did not indicate poorer quality downstream communities. Imidacloprid treatments applied according to US Environmental Protection Agency federal restrictions did not result in negative effects to aquatic macroinvertebrate communities, which indicates that risks of imidacloprid use in forest settings are low. Environ Toxicol Chem 2017;36:3108-3119. (c) 2017 SETAC