Synchronous Occurrences of the Diamondback Moth (Lepidoptera: Plutellidae) and its Parasitoid Wasp Cotesia vestalis (Hymenoptera: Braconidae) in Greenhouses in a Satoyama Area
Synchronous Occurrences of the Diamondback Moth (Lepidoptera: Plutellidae) and its Parasitoid Wasp Cotesia vestalis (Hymenoptera: Braconidae) in Greenhouses in a Satoyama Area
复制标题
DOI：
10.1093/ee/nvz140
复制
发表时间：
2020-02-01
影响因子：
1.7
通讯作者：
Takabayashi, Junji
中科院分区：
文献类型：
--
作者：
Abe, Junichiro;Uefune, Masayoshi;Takabayashi, Junji
研究了小菜蛾（Plutella xylostella， L.）幼虫和其优势寄生蜂（Cotesia vestalis, Haliday）在日本京都中山地区商业温室中发生的相关性。在本研究使用的三个温室中，种植了十字花科的“mizuna”（Brassica rapa var. laciniifolia[芸苔科]）作物。在温室中，没有常规使用针对小菜蛾的杀虫剂。结果表明，3 - 12月在周边地区野生十字花科植物Rorippa indica上存在小菜蛾（diamondback moth）和夜蛾（C. vestalis）。在温室中，我们观察到一些小菜蛾幼虫的出现，在大多数情况下，其次是灶神蛾的出现。在实验条件下，我们发现在第二体育场小菜蛾幼虫轻度侵染的水菜植物中释放的挥发物会吸引维斯塔斯雌蛾。小菜蛾幼虫与灶神蛾同时出现的原因可能是灶神蛾在温室中被小菜蛾幼虫侵染的水草散发出的挥发物所吸引。
We characterized the correlation between the occurrences of diamondback moth, Plutella xylostella (L.), larvae and their dominant native parasitoid wasp, Cotesia vestalis (Haliday), in commercial greenhouses in a satoyama area, called Miyama, in Kyoto, Japan. In the three greenhouses used in this study, cruciferous 'mizuna' (Brassica rapa var. laciniifolia [Brassicales: Brassicaceae]) crops were grown. Pesticides against diamondback moth were not routinely applied in the greenhouses. We confirmed that populations of diamondback moth and C. vestalis were maintained on the wild crucifer plant Rorippa indica in the surrounding area from March to December. In the greenhouses, we observed several occurrences of diamondback moth larvae that were, in most cases, followed by occurrences of C. vestalis. We found that C. vestalis females were attracted by volatiles emitted from mizuna plants that were lightly infested with second-stadium diamondback moth larvae under laboratory conditions. The synchronous appearance of diamondback moth larvae and C. vestalis could be explained by the latter being attracted by the volatiles emitted from mizuna plants infested by diamondback moth larvae in the greenhouses.