Agis M, Schlötterer C
Institut für Tierzucht und Genetik, Veterinärmedizinische Universität Wien, Josef Baumann Gasse 1, A-1210 Wien, Austria.
Mol Ecol. 2001 May;10(5):1197-205. doi: 10.1046/j.1365-294x.2001.01271.x.
Microsatellite variation was studied at 48 microsatellite loci in 10 Drosophila melanogaster populations to investigate the population structure on the Australian east coast. Low, but statistically significant population differentiation was observed among most populations. The populations on the Australian mainland did not show evidence for isolation by distance. We conclude that the population structure of D. melanogaster on the Australian mainland is probably the result of a shared history (recent colonization). The observed differences between local D. melanogaster populations probably reflect variation in effective population sizes rather than patterns of gene flow. Two populations from Tasmania were more differentiated from the Australian mainland than a population from Israel, raising the question whether they are derived from the Australian mainland or colonized from a different source population.
为了研究澳大利亚东海岸的种群结构，我们在10个黑腹果蝇种群中的48个微卫星位点上研究了微卫星变异。在大多数种群中观察到了较低但具有统计学意义的种群分化。澳大利亚大陆的种群没有显示出距离隔离的证据。我们得出结论，澳大利亚大陆上黑腹果蝇的种群结构可能是共同历史（近期殖民化）的结果。观察到的当地黑腹果蝇种群之间的差异可能反映了有效种群大小的变化，而不是基因流动模式。来自塔斯马尼亚的两个种群与澳大利亚大陆的差异比来自以色列的一个种群更大，这就提出了一个问题，即它们是源自澳大利亚大陆还是从不同的源种群殖民而来。
