Influence of landscape on the population genetic structure of the alpine butterfly Parnassius smintheus (Papilionidae)
Influence of landscape on the population genetic structure of the alpine butterfly Parnassius smintheus (Papilionidae)
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DOI：
10.1046/j.1365-294x.1999.00726.x
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发表时间：
1999-09-01
影响因子：
4.9
通讯作者：
Strobeck, C
中科院分区：
文献类型：
--
作者：
Keyghobadi, N;Roland, J;Strobeck, C
开发了4个微卫星DNA标记，用于研究加拿大落基山脉山脚下一组种群的景观与种群遗传结构的关系。关于成年蝴蝶在同一组种群中的扩散的详细信息可供参考。简单和部分Mantel检验被用来检验遗传距离、预测的扩散速度和许多景观变量之间的关系，所有这些变量都是在17个样本点进行成对测量的。Nei的标准遗传距离与预测的扩散呈负相关。我们在非常小的空间尺度上观察到了一种显著的因距离而孤立的模式。立地间穿过森林的距离比穿过开阔草地的距离对种群遗传距离的预测作用更强，这表明景观对种群遗传结构的影响比简单的距离隔离更显著。我们的结果表明，由全球变暖引起的高山地区林线的上升，将导致斯氏松毛虫种群间的基因流动减少。
Four microsatellite DNA markers were developed which were used to examine the relationship between landscape and population genetic structure among a set of populations of the butterfly Parnassius smintheus located in the foothills of the Canadian Rockies. Detailed information on the dispersal of adult butterflies among this same set of populations was available. Simple and partial Mantel tests were used to examine the relationships between genetic distances, predicted rates of dispersal, and a number of landscape variables, all measured pairwise for 17 sample sites. Nei's standard genetic distance was negatively correlated with predicted dispersal. We observed a significant pattern of isolation by distance at a very small spatial scale. The distance between sites that was through forest was a stronger predictor of genetic distance than the distance through open meadow, indicating a significant effect of landscape on population genetic structure beyond that of simple isolation by distance. Our results suggest that rises in the tree-line in alpine areas, caused by global warming, will lead to reduced gene flow among populations of P. smintheus.