寄主植物接种番茄斑萎病毒对西花蓟马种群的影响

【目的】西花蓟马Frankliniella occidentalis (Pergande)是一种入侵我国的重要害虫, 而番茄斑萎病毒是以西花蓟马传播为主的一种极具危害性的世界性病毒, 通过研究西花蓟马与番茄斑萎病毒之间的互作将有助于进一步深入理解西花蓟马以及番茄斑萎病毒的发生与猖獗机制, 同时也将为制定合理、可持续的控制西花蓟马及其传播的植物病毒防控策略提供理论依据。【方法】利用应用特定年龄-龄期及两性生命表方法, 研究了西花蓟马在辣椒3种处理（健康CK、机械损伤MD、机械接种番茄斑萎病毒MI）叶片上的生长发育、存活及种群增长。【结果】健康、机械损伤和机械接毒叶片上的发育历期依次为12.45, 11.97和11.18 d。雌雄成虫寿命和雌虫产卵量在不同处理植株叶片上差异显著(P<0.05), 在机械接毒叶片上寿命最长(雌13.51 d, 雄12.69 d); 繁殖能力最强, 产子代数高达33.01头1龄若虫/雌。健康、机械损伤和机械接毒叶片上西花蓟马内禀增长率分别为-0.009, 0.153和0.190 d-1, 净生殖率依次为0.84, 14.54和21.79。【结论】番茄斑萎病毒诱导寄主植物辣椒反应使西花蓟马发育历期缩短, 成虫寿命延长, 繁殖能力提高, 种群增长加速。

Effects of inoculation of host plants with tomato spotted wilt virus on populations of the western flower thrips,Frankliniella occidentalis (Pergande)(Thysanoptera:Thripidae)

[Aim] The western flower thrips (WFT),Frankliniella occidentalis (Pergande),is an invasive pest in China,while tomato spotted wilt virus (TSWV),which is mainly transmitted by WFT,is a very serious virus around the world. Through the study of the interactions between WFT and TSWV,the mechanism of the outbreak of both WFT and TSWV can be further understood. Furthermore,it will provide a theoretical basis for developing reasonable and sustainable control strategies of WFT and TSWV. [Methods] Age-stage and two-...