论文部分内容阅读
植物病毒可通过影响植物形态和生理特性从而对媒介昆虫和寄生性天敌产生作用。然而,在植物-媒介昆虫-寄生蜂三营养级关系研究中有关植物病毒的影响很少被考虑。本研究测定和分析了番茄植株感染番茄黄化曲叶病毒(tomato yellow leaf curl virus,TYLCV)后叶毛密度的变化及对烟粉虱Bemisia tabaci(Gennadius)重要寄生性天敌海氏桨角蚜小蜂Eretmocerus hayati Zolnerowich and Rose行为与适合性的影响。结果表明:携带TYLCV病毒番茄植株叶毛密度显著增加,为健康植株叶毛密度的1.8倍。海氏桨角蚜小蜂在带毒植株叶片上的寄主处置时间和寄主块停留时间显著长于其在健康植株叶片上的时间,分别为其2倍和1.5倍,但寄生蜂的寄生率、羽化率及发育历期差异不显著(P>0.05)。本文首次报道了双生病毒侵染可引起叶毛密度的增加,对理解植物-双生病毒-烟粉虱-寄生蜂四方关系提供了新的数据。
Plant viruses can affect vector and parasitic natural enemies by affecting plant morphology and physiology. However, the effects on plant viruses in the study of the three-trophic level of plant-vector insect-parasitoids are seldom considered. In this study, we measured and analyzed leaf density changes of tomato plants infected with tomato yellow leaf curl virus (TYLCV) and their effects on the population density of the important parasitic natural enemies of whitefly Bemisia tabaci (Gennadius) Effects of Bees Eretmocerus hayati Zolnerowich and Rose Behaviors and Fitness. The results showed that the leaf density of tomato plants carrying TYLCV virus increased significantly, which was 1.8 folds of that of healthy plants. The time of host treatment and the host block residence time on the leaves of the poisoned plants were significantly longer than those on the leaves of healthy plants, which were 2 times and 1.5 times, respectively, but the parasitoid parasitic rates and emergence There was no significant difference in rates and developmental duration (P> 0.05). This paper reports for the first time that twin virus infection can cause an increase in leaf density and provides new data for understanding the tetraploid-biphonid-whitefly-parasitoidal tetrapod quadrilateral relationship.