光照和寄主叶龄对烟粉虱产卵和取食行为的影响

从烟粉虱的寄主行为出发,研究了光照和寄主叶龄对烟粉虱取食过程的影响.结果发现,烟粉虱雌成虫的取食行为居于优势地位,强烈影响着烟粉虱的产卵和交配行为.产卵行为在时间上不独立,是与取食行为共同发生的,而烟粉虱的取食偏好性是导致不同叶龄之间产卵分布差异的主要因素.光照因子能够诱导烟粉虱雄成虫的求偶行为,但没有发现雌成虫对光照变化的行为反应.分析认为取食行为占主导地位是由于广食性的烟粉虱在寄主适应过程中更多地依赖于种群的繁殖力,而不是生理适应的专化性.

Effects of Light and Host Leaf Ages on Oviposition and Feeding Behavior of Bemisia tabaci

The effects of lighu intension and leaf age on feeding process of the whitefly,Bemisia tabaci(Gennaidus),were studied.It was found that the feeding behavior of the whitefly was dominant among other activities and strongly affected ovipostion and mating behavior of whitefly.The oviposition behavior was not independent and occured with feeding behavior together.The feeding preference was major cause of eggs distribution on host leaves with different ages.Intensive light could induce mating behavior of male,however,the female had no this response.It also was revealed from the results that the dominant feeding behavior was resulted from whitefly as a generalist relying mainly on population fecundity for host adaptation instead of the physiological specialization.