Zivanovic Goran, Arenas Concepció, Mestres Francesc
Department of Genetics, Institute for Biological Research Sinisa Stankovic, University of Belgrade, Serbia.
Hereditas. 2007 Sep;144(4):120-8. doi: 10.1111/j.2007.0018-0661.02008.x.
Although Drosophila subobscura has been a model organism for European and American population geneticists, little information is available on the genetic structure of its natural populations. In this paper we report the estimates of some population parameters. We have used data from lethal allelism tests in four Balkan populations (Kamariste, Djerdap and Petnica in Serbia and Zanjic in Montenegro). In all populations, lethal genes were found to have a deleterious effect on heterozygotes. The N(e) values varied greatly from 370 (Petnica) to 19413 (Kamariste), depending on the habitat conditions and some environmental factors. Finally, gene flow between the Balkan populations was detected by the estimates of N(m) (from 4.68 in Petnica to 106.2 in Kamariste) and m (from 0.0041 in Djerdap to 0.0126 in Petnica). These results agree with those obtained in a previous study where the frequencies of allelism between populations were greater than predicted by independently arising lethal genes.
尽管暗果蝇一直是欧美群体遗传学家的模式生物，但其自然种群的遗传结构信息却很少。在本文中，我们报告了一些种群参数的估计值。我们使用了来自四个巴尔干半岛种群（塞尔维亚的卡马里斯特、杰尔达普和佩特尼察以及黑山的赞吉奇）的致死等位基因测试数据。在所有种群中，致死基因对杂合子都有有害影响。有效种群大小（N(e)）值差异很大，从370（佩特尼察）到19413（卡马里斯特），这取决于栖息地条件和一些环境因素。最后，通过有效迁移率（N(m)）估计值（从佩特尼察的4.68到卡马里斯特的106.2）和迁移率（m）估计值（从杰尔达普的0.0041到佩特尼察的0.0126）检测到巴尔干半岛种群之间的基因流动。这些结果与之前一项研究的结果一致，在该研究中，种群之间等位基因频率高于独立出现的致死基因的预测值。
