Chlorantraniliprole application differentially affects adult emergence of Sympetrum dragonflies in rice paddy fields
Chlorantraniliprole application differentially affects adult emergence of Sympetrum dragonflies in rice paddy fields
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DOI：
10.1007/s10333-021-00880-5
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发表时间：
2021-11-22
影响因子：
2.2
通讯作者：
Hayashi, Takehiko, I
中科院分区：
文献类型：
--
作者：
Nakanishi, Kosuke;Usio, Nisikawa;Hayashi, Takehiko, I
稻田是许多蜻蜓物种的重要栖息地。在日本，稻田中栖息的蜻蜓数量，特别是 Sympetrum（蜻蜓目：Libellulidae）数量在过去几十年中大幅减少。据认为，造成水稻幼苗数量下降的主要原因是在育苗箱中使用内吸性杀虫剂（例如苯基吡唑和新烟碱类杀虫剂）。在这项研究中，我们通过计算水稻植株上残留的蜕皮作为丰度指数，研究了氯虫苯甲酰胺 (CAP)（一种新型邻氨基苯甲酰胺类杀虫剂）对 10 片稻田中红蜻蜓成虫羽化的影响。我们的结果表明，CAP 是降低 S. infuscatum 出现率的潜在因素，但不降低 S. frequens 的出现率。这种差异可能是由于对 CAP 的敏感性不同、若虫阶段的长度不同或通过减少对 CAP 高度敏感的猎物生物体而自下而上控制的不同效果。
Rice paddy fields are important habitat for many dragonfly species. In Japan, populations of dragonflies inhabiting rice paddies, in particular Sympetrum (Odonata: Libellulidae), have decreased greatly in the last few decades. A major cause of the decline has been suggested to be the use of systemic insecticides (e.g., phenylpyrazole and neonicotinoid) in nursery boxes of rice seedlings. In this study, we examined the effects of chlorantraniliprole (CAP), a novel anthranilic diamide insecticide, on adult emergence of Sympetrum dragonflies in ten rice paddy fields by counting their exuviae remaining on the rice plants as an abundance index. Our results suggest that CAP is a potential factor that reduced the emergence rate of S. infuscatum but not of S. frequens. This difference may be due to differential sensitivity to CAP, different lengths of the nymphal stage, or different effects of bottom-up controls via reduction of prey organisms that are highly sensitive to CAP.