ミカンキイロアザミウマによるトマト黄化えそウイルス獲得源としての各種雑草の評価

Abstract

We examined the acquisition and transmission rates of Tomato spotted wilt virus (TSWV) in Frankliniella occidentalis that were fed with eight TSWV-infected weed species. When the first instar larvae were given TSWV-infected leaves of Cerastium glomeratum, Solanum nigrum, Stellaria media, and Galinsoga ciliata, the acquisition rates of adult thrips were 85.4%, 73.6%, 72.6%, and 35.6%, and the transmission rates were 76.4%, 60.9%, 61.3%, and 29.9%, respectively. On the other hand, the acquisition and transmission rates were less than 10% when F. occidentalis were fed with Lamium amplexicaule, Stellaria neglecta, Veronica persica, and Vicia angustifolia. These results suggest that the potential to be an TSWV-acquisition source for F. occidentalis differs among weed species, and that the thrips can become transmitters by acquiring the virus from some weed species.