A TEST FOR ISOLATION-BY-DISTANCE IN CENTRAL ROCKY-MOUNTAIN AND GREAT-BASIN POPULATIONS OF EDITH CHECKERSPOT BUTTERFLY (EUPHYDRYAS-EDITHA)
A TEST FOR ISOLATION-BY-DISTANCE IN CENTRAL ROCKY-MOUNTAIN AND GREAT-BASIN POPULATIONS OF EDITH CHECKERSPOT BUTTERFLY (EUPHYDRYAS-EDITHA)
复制标题
DOI：
10.1093/oxfordjournals.jhered.a111563
复制
发表时间：
1995-05-01
影响因子：
3.1
通讯作者：
EHRLICH, PR
中科院分区：
文献类型：
--
作者：
BRITTEN, HB;BRUSSARD, PF;EHRLICH, PR
在14-28个同工酶基因座上对18个伊迪丝斑蝶种群进行了遗传变异分析，其中7个种群来自落基山脉中部，II个种群来自大盆地。在所调查的基因座中，有13个在至少一个抽样群体中是多态的。对这些数据应用了Slatkin的方法，该方法使用种群间分散度[log(Nm)]与种群间成对线性距离[log(D)]的成对估计的回归来检测按距离隔离。落基山脉中部的种群表现出远距离隔离，而大盆地种群则没有。种群结构上的这些差异可能是由于该物种的扩散能力较弱，以及其栖息地在大盆地的孤岛性质所致。
A total of 18 Edith's checkerspot butterfly (Euphydryas editha) populations, seven from the central Rocky Mountains and II from the Great Basin, were assayed for genetic variability at 14-28 isozyme loci. Of the surveyed loci, 13 were polymorphic in at least one of the sampled populations. Slatkin's method for detecting isolation-by-distance using a regression of pairwise estimates of interpopulation dispersal [log(Nm)] against pairwise linear distance between populations [log(D)] was applied to these data. Central Rocky Mountain populations exhibited isolation-by-distance while the Great Basin populations did not. These differences in population structure are probably due to the weak dispersal abilities of this species and to the insular nature of its habitat in the Great Basin.