番茄感染双生病毒对叶毛密度和海氏桨角蚜小蜂搜寻行为及适合性的影响

›› 2013, Vol. 56 ›› Issue (6): 644-651.

番茄感染双生病毒对叶毛密度和海氏桨角蚜小蜂搜寻行为及适合性的影响

潘登^1,2, 王岚岚², 刘树生², 李元喜^1,*, 刘银泉^2,*

(1. 南京农业大学植物保护学院昆虫系, 南京 210095; 2. 浙江大学昆虫科学研究所, 农业部农业昆虫学重点实验室, 杭州 310058)

出版日期:2013-06-20 发布日期:2013-06-20

Effects of begomovirus infection of tomato plants on leaf trichome density and foraging performance and fitness of Eretmocerus hayati (Hymenoptera: Aphelinidae), a parasitoid of the whitefly, Bemisia tabaci

PAN Deng^1,2, WANG Lan-Lan², LIU Shu-Sheng², LI Yuan-Xi^1,*, LIU Yin-Quan^2,*

(1. Department of Entomology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; 2. Key Laboratory of Agricultural Entomology of Ministry of Agriculture, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China)

Online:2013-06-20 Published:2013-06-20

摘要/Abstract

摘要： 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。

关键词: 番茄黄化曲叶病毒, 烟粉虱, 海氏桨角蚜小蜂, 寄主块停留时间, 叶片表面特征, 叶毛密度, 植物-病毒-媒介昆虫-天敌关系

Abstract: Plant viruses can induce changes in plant morphology and physiology, which may affect the performance of the insect vectors and parasitoids. However, the impact of plant viruses has been rarely considered in the research of this type of plant-vector-parasitoid interactions. In this study, we tested and analyzed the effects of the begomovirus, tomato yellow leaf curl virus (TYLCV), on the leaf trichome density of tomato and the foraging performance and fitness of the whitefly parasitoid, Eretmocerus hayati Zolnerowich and Rose. Our results showed that viral infection of tomato led to a significant increase of leaf trichome density, which in virus-infected plants was 1.8 times as high as that in uninfected plants. The host handling time and patch residence time of the parasitoid on virus-infected plants were 2- and 1.5-fold as high as that on uninfected plants, respectively. However, the parasitism rates, emergence rates and developmental durations of the parasitoid on infected and uninfected plants were similar. This is the first report of begomovirus-induced increase of plant leaf trichomes and its effects on a parasitoid, and it provides new data for understanding the interactions between plants, begomoviruses, whiteflies and parasitoids.

潘登, 王岚岚, 刘树生, 李元喜, 刘银泉. 番茄感染双生病毒对叶毛密度和海氏桨角蚜小蜂搜寻行为及适合性的影响[J]. , 2013, 56(6): 644-651.

PAN Deng, WANG Lan-Lan, LIU Shu-Sheng, LI Yuan-Xi, LIU Yin-Quan. Effects of begomovirus infection of tomato plants on leaf trichome density and foraging performance and fitness of Eretmocerus hayati (Hymenoptera: Aphelinidae), a parasitoid of the whitefly, Bemisia tabaci[J]. , 2013, 56(6): 644-651.

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