论文部分内容阅读
利用风洞技术研究了斑痣悬茧蜂不同阶段的经历对其寄主甜菜夜蛾搜索行为的影响。结果表明:寄生蜂幼期发育到羽化早期所经历的植物对其成虫搜索行为具有一定的影响,在供试的大豆、棉花和白菜等3种植物中,只有大豆-寄主幼虫复合体对无经验寄生蜂的行为反应具有显著影响。寄生蜂1次产卵经历对后续搜索行为的影响取决于饲养寄主幼虫的植物种类,只有在大豆和白菜上的产卵经历对后续搜索行为产生显著影响,即明显偏好经历过的植物;对于在不同植物上经历2次产卵的寄生蜂,后续搜索行为反应取决于植物种类及其顺序,若2次产卵经历发生在大豆与白菜之间,无论顺序先后,后续行为反应均偏好大豆-寄主幼虫复合体;但若2次产卵经历发生在大豆与棉花之间,只有当第2次为大豆时,后续行为反应显著偏好大豆-寄主幼虫复合体;若2次寄生经历发生在棉花与白菜之间,只有当第2次经历为白菜时,后续行为反应显著偏好白菜-寄主幼虫复合体。根据研究结果推断,斑痣悬茧蜂幼期发育、成虫早期羽化的经历、成虫产卵经历对后续搜索行为具有显著影响,而且这种影响与寄主幼虫的食料植物有关。
The wind tunnel technique was used to study the effects of different stages of the predators on the search behavior of their hosts, Spodoptera exigua. The results showed that the plants experienced by the parasitoid at the early stage of eclosion had certain influence on the search behavior of adults. Only the soybean-host larvae complex had no experience on the search of soybean, cotton and cabbage, Behavioral responses of parasitoids have a significant effect. The effect of secondary spawning experience on subsequent search behavior depends on the species of plant that hosts the host larvae. Only the spawning experience on soybean and cabbage has a significant effect on subsequent search behavior, ie significant preference for experienced plants; After two spawning parasitic wasps on different plants, the subsequent search behavior depends on the species and order of the plants. If the second spawning experience occurs between soybean and cabbage, both the sequential and subsequent behavioral responses favored soybean-host Larvae complex. However, if the second spawning experience occurred between soybean and cotton, the follow-up behavior significantly favored soybean-host larvae complex only when the second was soybean. If the second parasitism occurred in cotton and cabbage Only when the second experience was cabbage, the follow-up behavior significantly favored the cabbage-host larval complex. According to the results of the study, the early development of M. vaccae, the early eclosion of adults, and the spawning experience of adults have a significant impact on the subsequent search behavior, and this effect is related to the host plant larvae fed on plants.