Waring Gwendolyn L, Abrahamson Warren G, Howard Daniel J
Department of Biology, Museum of Northern Arizona, Route 4, Box 720, Flagstaff, AZ, 86001, USA.
Department of Biology, Bucknell University, Lewisburg, PA, 17837, USA.
Evolution. 1990 Sep;44(6):1648-1655. doi: 10.1111/j.1558-5646.1990.tb03853.x.
Eurosta solidaginis, a gallmaking tephritid (Diptera), infests at least two species of Solidago in the eastern United States. We used horizontal starch gel electrophoresis of enzymes to examine whether populations on the two principal host plant species, Solidago altissima and S. gigantea, have diverged genetically. At the d-β-hydroxybutyrate dehydrogenase (HBDH) locus, the predominant allele in all nine populations from S. altissima (HBDH ) was absent or uncommon in all but 1 of the 12 populations from S. gigantea. At the phosphoglucomutase locus (PGM), the most common allele in all populations was PGM , but the frequency of this allele was, with one exception, higher in populations from S. gigantea than in populations from S. altissima. Genetic heterozygosity was usually greater in populations from S. altissima (H̄ = 0.028) than in populations from S. gigantea (H̄ = 0.009). A phylogenetic tree derived from a genetic distance matrix clustered gallmaker populations from the same host plant together.
欧洲金蝇（Eurosta solidaginis）是一种形成虫瘿的实蝇（双翅目），在美国东部至少侵染两种一枝黄花属植物。我们利用酶的水平淀粉凝胶电泳来研究在两种主要寄主植物物种，即高茎一枝黄花（Solidago altissima）和巨花一枝黄花（S. gigantea）上的种群在基因上是否已经分化。在d-β-羟基丁酸脱氢酶（HBDH）位点，来自高茎一枝黄花的所有9个种群中的主要等位基因（HBDH ），在来自巨花一枝黄花的12个种群中，除了1个种群外，在其他种群中都不存在或不常见。在磷酸葡萄糖变位酶位点（PGM），所有种群中最常见的等位基因是PGM ，但除了一个例外，该等位基因在来自巨花一枝黄花的种群中的频率高于来自高茎一枝黄花的种群。高茎一枝黄花种群的遗传杂合度（H̄ = 0.028）通常大于巨花一枝黄花种群的遗传杂合度（H̄ = 0.009）。从遗传距离矩阵得出的系统发育树将来自同一寄主植物的造瘿蝇种群聚类在一起。
