High genetic diversity and structured populations of the oriental fruit moth in its range of origin.
High genetic diversity and structured populations of the oriental fruit moth in its range of origin.
复制标题
东方果蛾在其起源范围内具有高度遗传多样性和结构化种群。
DOI：
10.1371/journal.pone.0078476
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发表时间：
2013
期刊：
影响因子：
3.7
通讯作者：
Chen M
中科院分区：
文献类型：
--
作者：
Zheng Y;Peng X;Liu G;Pan H;Dorn S;Chen M
梨小食心蛾Grapholita( = Cydia)Molesta是全球重要的水果害虫。尽管它在经济上很重要，但人们对它在推定的原生范围内的种群遗传学知之甚少，其中包括中国。利用5个多态微卫星基因座和2个线粒体基因序列，对中国果树主产区3个果区9个亚群的棉铃虫种群遗传多样性和遗传结构进行了研究。整个季节从桃树上采集幼虫样本，在晚季，寄主被飞蛾转移到仁果后，也从苹果和梨上采集幼虫样本。我们在所有区域都发现了大量的微卫星等位基因和线粒体DNA单倍型，同时在所有亚区都发现了大量的私有等位基因和单倍型，这为采样区属于该物种的起源提供了强有力的证据。从桃上采集的样本在地理上是有结构的，在种群中发现了一种显著的、尽管很弱的按距离隔离的模式，这可能反映了该蛾的飞行能力较低。有趣的是，在晚季从苹果和梨上采样的种群显示出与整个季节从桃子上采样的种群不同的结构，这表明只有一定部分种群的选择性寄主交换。最近在棉铃虫中检测到的各种嗅觉基因可能是这种选择性寄主开关的基础。这些遗传数据首次获得了对棉铃虫在其原生范围内的种群动态以及从桃子到仁果的选择性寄主转换的了解，这可能对全球其他水果产区设计合适的害虫管理策略具有广泛的适用性。
The oriental fruit moth Grapholita ( = Cydia) molesta is a key fruit pest globally. Despite its economic importance, little is known about its population genetics in its putative native range that includes China. We used five polymorphic microsatellite loci and two mitochondrial gene sequences to characterize the population genetic diversity and genetic structure of G. molesta from nine sublocations in three regions of a major fruit growing area of China. Larval samples were collected throughout the season from peach, and in late season, after host switch by the moth to pome fruit, also from apple and pear. We found high numbers of microsatellite alleles and mitochondrial DNA haplotypes in all regions, together with a high number of private alleles and of haplotypes at all sublocations, providing strong evidence that the sampled area belongs to the origin of this species. Samples collected from peach at all sublocations were geographically structured, and a significant albeit weak pattern of isolation-by-distance was found among populations, likely reflecting the low flight capacity of this moth. Interestingly, populations sampled from apple and pear in the late season showed a structure differing from that of populations sampled from peach throughout the season, indicating a selective host switch of a certain part of the population only. The recently detected various olfactory genotypes in G. molesta may underly this selective host switch. These genetic data yield, for the first time, an understanding of population dynamics of G. molesta in its native range, and of a selective host switch from peach to pome fruit, which may have a broad applicability to other global fruit production areas for designing suitable pest management strategies.
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影响因子：
3.7
作者：
Karsten M;van Vuuren BJ;Barnaud A;Terblanche JS
通讯作者：
Terblanche JS
影响因子：
1.9
作者：
Il'ichev, A. L.;Williams, D. G.;Gut, L. J.
通讯作者：
Gut, L. J.
影响因子：
3.3
作者：
Guillot, G;Estoup, A;Cosson, JF
通讯作者：
Cosson, JF
DOI：
10.1111/j.1471-8286.2005.01031.x
发表时间：
2005-09-01
期刊：
MOLECULAR ECOLOGY NOTES
影响因子：
--
作者：
Guillot, G;Mortier, F;Estoup, A
通讯作者：
Estoup, A
影响因子：
7.7
作者：
Excoffier, Laurent;Lischer, Heidi E. L.
通讯作者：
Lischer, Heidi E. L.