Host-adapted parasitoids in biological control: Does source matter?
Host-adapted parasitoids in biological control: Does source matter?
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DOI：
10.1890/08-1869.1
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发表时间：
2010-01-01
影响因子：
5
通讯作者：
Roitberg, Bernard D.
中科院分区：
文献类型：
--
作者：
Henry, Lee M.;May, Nigel;Roitberg, Bernard D.
据推测，生物控制引入的成功部分取决于控制剂通过局部适应在其新环境中或其新宿主种群中建立的能力。尽管如此，很少有研究调查的影响，最近的共同进化历史的害虫物种和天敌油的生物控制剂的效力，特别是大规模饲养的农业释放剂。我们调查的进化潜力的生物控制剂蚜虫ervi适应一个关键的害虫物种，毛地黄蚜虫Aulacorthum solani，通过组件的寄生虫毒力的进化必不可少的。我们探讨了（1）遗传变异对天然来源种群的影响，（2）与寄生蜂适合度相关的关键性状的遗传力;（3）在温室系统中寄生蜂寄主选择百合的功效。然而，源种群在利用纳塔尔和非出生宿主物种的能力方面保持遗传变异。只有一些特征表明寄生蜂种群的地方适应。寄生宿主的能力被认为是由遗传决定的，具有很强的遗传性，与宿主物种无关。温室研究表明，寄生蜂选择百合的潜力，大大提高了目标害虫物种的寄生蜂的性能。这项研究提供了新的技术，可用于提高质量的生物控制剂，通过发展百合的天敌适应特定的害虫物种。
It has been hypothesized that the success of a biological control introduction is, in part, dependent oil the ability of the control agent to become established in its new environment or to its new population of hosts through local adaptation. Despite this, few studies have investigated the influence of the recent coevolutionary history of pest species and natural enemies oil the efficacy of biological control agents, especially for agents that arc mass-reared for release in agriculture. We investigate the evolutionary potential of a biological control agent Aphidius ervi to adapt to a key pest species, the foxglove aphid Aulacorthum solani, through components essential to the evolution of parasitoid Virulence. We explored (1) the influence of genetic variation front natural Source populations Oil the ability to parasitize natal and non-natal host species, (2) the heritability of key traits related to parasitoid fitness; and (3) the efficacy of parasitoid host-selection lilies in a greenhouse system. Source Populations maintained genetic variation in the ability to utilize natal and non-natal host species; however. Only some of the traits sampled suggested local adaptation of parasitoid Populations. The ability to parasitize a host was found to be genetically determined and strongly heritable, irrespective of host species. The greenhouse study demonstrated the potential of parasitoid selection lilies to substantially increase performance of parasitoids for target pest species. This research provides insight into novel techniques that can be used to increase the quality of biological control agents through the development of lilies of natural enemies adapted to particular pest species.