Dhuyvetter H, Gaublomme E, Desender K
Department of Entomology, Royal Belgian Institute of Natural Sciences, Vautierstreet 29, B-1000 Brussels, Belgium.
Mol Ecol. 2004 May;13(5):1065-74. doi: 10.1111/j.1365-294X.2004.02134.x.
The genetic structure of Pogonus chalceus from 11 Atlantic and seven Mediterranean Western European populations was analysed. Results from seven allozyme loci were compared to five microsatellites to test the hypothesis that some enzymatic loci undergo selection. Both allozyme and microsatellite results showed that Mediterranean beetle populations are genetically distinct from Atlantic populations. The analysis of the genetic structure showed that FST values derived from all microsatellite loci were much smaller than those obtained from allozymes. The enzymatic locus Idh-1 exhibited a high value compared to the other loci, suggesting that it is non-neutral. The same Idh-1 locus was implicated in differentiation between temporary and stable populations, as followed also from a highly significant relationship between the allele two of this Idh-1 locus and dispersal power population estimates. The 'parallel evolution' model may account for the diversification of locally adapted Pogonus chalceus populations between different microhabitats.
分析了来自11个大西洋和7个地中海西欧种群的铜绿长角象的遗传结构。将7个等位酶位点的结果与5个微卫星进行比较，以检验某些酶位点是否受到选择的假设。等位酶和微卫星结果均表明，地中海甲虫种群在遗传上与大西洋种群不同。遗传结构分析表明，所有微卫星位点的FST值远小于等位酶的FST值。与其他位点相比，酶位点Idh-1表现出较高的值，表明它是非中性的。同一个Idh-1位点与临时种群和稳定种群之间的分化有关，这也源于该Idh-1位点的等位基因2与扩散能力种群估计值之间的高度显著关系。“平行进化”模型可能解释了不同微生境之间局部适应的铜绿长角象种群的多样化。
