Responses of an oligophagous beetle species to rearing for several generations on alternative host-plant species
Responses of an oligophagous beetle species to rearing for several generations on alternative host-plant species
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DOI：
10.1111/j.1365-2311.2010.01256.x
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发表时间：
2011-04-01
影响因子：
2.2
通讯作者：
Mueller, Caroline
中科院分区：
文献类型：
--
作者：
Kuehnle, Anne;Mueller, Caroline
2.将在芜菁上饲养了几代的种群分裂并转移到替代的油菜科物种白芥和旱金莲中的任一种上，或者保持在B上。萝卜连续饲养。10代后，再次在原始宿主物种B上测试了白芥和旱金莲种群的子集。拉帕。幼虫的表现和成人的喜好进行了测试。在第二代中，甲虫在B上表现更好（更高的体重和更快的幼虫发育）。而不是两个不同的物种。经过10代的选择，甲虫对这些替代植物的表现有所改善。这种效应在S. alba比N. officinale。但是，在B上的表现。在替代种上选择10代后，菜青虫的种群数量不受影响，与在B上连续饲养的种群数量几乎相等。rapa，只有在N上选择的线略有偏差。4.大多数雌虫喜欢在B产卵。rapa独立的经验，这表明遗传固定和/或幼虫的性能和成人的偏好之间的正相关关系。偏好也可能是由叶子的物理特性驱动的。
2. A population that had been reared for several generations on Brassica rapa was split and transferred to either one of the alternative Brassicaceae species, Sinapis alba and Nasturtium officinale, or was kept on B. rapa for continuous rearing. After 10 generations, a subset of the Sinapis and Nasturtium populations was tested again on the original host species, B. rapa. Larval performance and adult preferences were tested.3. In the second generation, beetles performed better (higher body mass and faster larval development) on B. rapa than on the two alternative species. No evidence for imprinting was found. After 10 generations of selection on the alternative plant species, the performance of the beetles on these species improved. This effect was more pronounced on S. alba than on N. officinale. However, the performance on B. rapa after 10 generations of selection on the alternative species was unaffected, and was nearly equal to the insects kept continuously on B. rapa, with slight deviations only in the lines selected on N. officinale.4. Most females preferred to oviposit on B. rapa independent of their experience, suggesting a genetic fixation and/or a positive relationship between larval performance and adult preference. Preferences may have been also driven by physical leaf characteristics.