Equipe "Biologie des Populations en Interaction", UMR 1301 I.B.S.V. INRA-UNSA-CNRS, Sophia Antipolis, France.
PLoS One. 2011;6(6):e21263. doi: 10.1371/journal.pone.0021263. Epub 2011 Jun 20.
We used eight microsatellite loci and a set of 20 aphid samples to investigate the spatial and temporal genetic structure of rosy apple aphid populations from 13 apple orchards situated in four different regions in France. Genetic variability was very similar between orchard populations and between winged populations collected before sexual reproduction in the fall and populations collected from colonies in the spring. A very small proportion of individuals (∼2%) had identical multilocus genotypes. Genetic differentiation between orchards was low (F(ST)<0.026), with significant differentiation observed only between orchards from different regions, but no isolation by distance was detected. These results are consistent with high levels of genetic mixing in holocyclic Dysaphis plantaginae populations (host alternation through migration and sexual reproduction). These findings concerning the adaptation of the rosy apple aphid have potential consequences for pest management.
我们使用了八个微卫星位点和一组 20 个蚜虫样本，调查了来自法国四个不同地区的 13 个苹果园中玫瑰苹果蚜虫种群的时空遗传结构。果园种群之间以及秋季有翅蚜虫在有性繁殖前采集的种群与春季从殖民地采集的种群之间的遗传变异性非常相似。只有一小部分个体（约 2%）具有相同的多位点基因型。果园之间的遗传分化很小（F(ST)<0.026），仅在不同地区的果园之间观察到显著的分化，但没有检测到距离隔离。这些结果与全周期 Dysaphis plantaginae 种群（通过迁移和有性繁殖进行宿主交替）中高水平的遗传混合一致。这些关于玫瑰苹果蚜虫适应性的发现对害虫管理具有潜在影响。
