Genetic structure and diversity of a newly invasive species, the codling moth, Cydia pomonella (L.) (Lepidoptera: Tortricidae) in China
Genetic structure and diversity of a newly invasive species, the codling moth, Cydia pomonella (L.) (Lepidoptera: Tortricidae) in China
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中国新入侵物种苹果蠹蛾Cydia pomonella (L.)（鳞翅目：Tortricidae）的遗传结构和多样性
DOI：
10.1007/s10530-012-0299-5
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发表时间：
2013-02-01
影响因子：
2.9
通讯作者：
Feng, Ji-Nian
中科院分区：
文献类型：
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作者：
Men, Qiu-Lei;Chen, Mao-Hua;Feng, Ji-Nian
苹果蠹蛾Cydia pomonella（L.）20世纪50年代在我国首次报道，是我国果园最严重的入侵害虫之一。它从新疆的原址迅速传播到西北其他地区。自2006年以来，这种害虫进一步渗透到中国东北部。其入侵速度之快，已威胁到我国大部分仁果产区。我国苹果蠹蛾种群遗传多样性和遗传结构的研究尚属空白。我们研究了12 C的遗传变异。利用8个微卫星位点对我国苹果蠹主要分布区（新疆、甘肃和黑龙江）的苹果蠹居群与德国和瑞士的苹果蠹居群进行了遗传多样性和遗传结构分析。我们观察到遗传多样性的顺序损失和显着的结构与分布，但没有显着的遗传距离和地理距离之间的相关性西北人群。没有遗传证据表明瓶颈效应在任何人群。结果表明，中国对虾遗传多样性的丧失是由于其遗传多样性的丧失而引起的.苹果蠹种群是由创始种群的连续定殖引起的。最近的入侵历史导致缺乏任何瓶颈效应。苹果蠹蛾种群的高度遗传结构与其地理距离无关，而与其飞行能力弱和人为扩散有关。这些遗传数据不仅为我们提供了一个成功的生物入侵相关的微观进化过程的理解，但也为害虫管理策略提供指导。
Cydia pomonella (L.) was firstly reported in China in the 1950s and considered as one of the most serious invasive pest in fruit orchards of China. It spread rapidly from the original site in Xinjiang to other northwestern regions. The pest has further penetrated northeastern China since 2006. With its rapid invasion rate, most pome fruit production areas of China are being threatened. As yet there has been no research into the genetic diversity and structure of the codling moth population in China. We investigated the genetic variations of 12 C. pomonella populations collected from the main distribution regions (Xinjiang, Gansu and Heilongjiang Provinces) in China and compared them with one German and one Swiss population using eight microsatellites loci to infer the characteristics of genetic diversity and genetic structure. We observed sequential loss of genetic diversity and significant structuring associated with distribution but no significant correlation between genetic distance and geographic distance among northwestern populations. There was no genetic evidence for bottleneck effects in any of the populations. The results suggest that the loss of genetic diversity in C. pomonella populations resulted from the successive colonization of founder populations. Recent invasion history led to the lack of any bottleneck effect. The high level of population genetic structuring is related to the weak flight capacity of the codling moth and the human-aided dispersal rather than to geographic distance. These genetic data not only provide us with an understanding of the micro-evolutionary processes related to successful biological invasions, but also provide guidance for pest management strategies.