Abstract:
The brown marmorated stink bug, Halyomorpha halys (Stål) (Hemiptera: Pentatomidae), is an invasive polyphagous pest often observed in vineyards. In Europe, a gap needs to be filled in the knowledge on H. halys seasonal dynamics and damage on grapes. With this study, we described the seasonal dynamics of H. halys and its distribution in multi-cultivar vineyards, and we evaluated the damage on grape clusters induced by different pest densities. In vineyards, the seasonal occurrence of H. halys varied across time and grape cultivars, and the pest was more abundant on Cabernet Franc, Merlot and, to a lesser extent, Pinot gris. Moreover, higher densities of H. halys were found on red berry cultivars than on white ones, and on cultivars ripening late in the season. An edge effect was also detected in pest distribution within vineyards, with more stink bugs observed in the borders. In the study on pest infestation density, H. halys caused damage on berries, showing differences in susceptibility among different cultivars and with regard to the time of infestation (i.e., plant phenological stages). Halyomorpha halys infestation induced an increase in Botrytis cinerea and sour rot incidence, which probably represents the main issue related to the impact of brown marmorated stink bug on grapevine.
摘要:
棕色的堕落臭虫,Halyomorphahalys(Stál)(Hemiptera:Pentatomidae),是一种经常在葡萄园中观察到的侵入性多食害虫。在欧洲,需要填补有关H.halys季节动态和葡萄损害的知识空白。通过这项研究,我们描述了H.halys的季节动态及其在多品种葡萄园中的分布,我们评估了不同害虫密度对葡萄簇的损害。在葡萄园里,H.halys的季节性发生随时间和葡萄品种而变化,赤霞珠的害虫更丰富,梅洛还有,在较小程度上,黑皮诺酒。此外,在红色浆果品种上发现的H.halys密度高于白色品种,以及在季节后期成熟的品种。在葡萄园内的害虫分布中也检测到边缘效应,在边境观察到更多的臭虫。在害虫侵染密度的研究中,H.halys对浆果造成了损害,显示不同品种之间的易感性以及侵染时间的差异(即,植物物候阶段)。Halyomorphahalys侵染导致灰葡萄孢和酸腐病发病率增加,这可能代表了与棕色的臭虫对葡萄的影响有关的主要问题。