Maeda T, Takabayashi J, Yano S, Takafuji A
Laboratory of Ecological Information, Graduate School of Agriculture, Kyoto University, Japan.
Exp Appl Acarol. 2000;24(5-6):415-25. doi: 10.1023/a:1006449108245.
By analyzing the volatiles from Tetranychus urticae-infested kidney bean plants (Phaseolus vulgaris) at different times for two days, we found that they were mainly produced in the light. Tetranychus urticae showed a higher oviposition rate and spent more time feeding during the day (in the light) than at night (in the dark). Infested leaves placed in the light attracted the predatory mite Amblyseius womersleyi, whereas those that were placed in the dark for at least 2 h in daytime did not. This indicates that presence or absence of light affects the production of herbivore-induced plant volatiles. Amblyseius womersleyi dispersed more frequently and consumed more T. urticae eggs during the day (in the light) than at night (in the dark), whereas their oviposition rate did not differ between day and night. Presence or absence of herbivore-induced plant volatiles in the surroundings did not affect dispersal, predation or oviposition rates of A. womersleyi. These results show that A. womersleyi's behavior coincides with the production pattern of herbivore-induced plant volatiles.
通过对受二斑叶螨侵害的菜豆（菜豆属）植株在两天内不同时间的挥发物进行分析，我们发现这些挥发物主要在光照条件下产生。二斑叶螨在白天（光照下）的产卵率更高，取食时间也比夜间（黑暗中）更长。白天置于光照下的受害叶片会吸引捕食螨胡瓜钝绥螨，而白天至少在黑暗中放置2小时的叶片则不会。这表明光照的有无会影响植食性昆虫诱导的植物挥发物的产生。胡瓜钝绥螨在白天（光照下）比夜间（黑暗中）更频繁地扩散，消耗的二斑叶螨卵也更多，但其产卵率在白天和夜间并无差异。周围环境中植食性昆虫诱导的植物挥发物的有无并不影响胡瓜钝绥螨的扩散、捕食或产卵率。这些结果表明，胡瓜钝绥螨的行为与植食性昆虫诱导的植物挥发物的产生模式相吻合。
