Pfeiler Edward, Ngo Nancy M, Markow Therese A
Centro de Investigación en Alimentación y Desarrollo, A.C., Unidad Guaymas, Guaymas, Sonora, Mexico.
Hereditas. 2005 Feb;142(2005):1-6. doi: 10.1111/j.1601-5223.2005.01900.x.
Although Drosophila species provide important model systems for evolutionary biology, the ecologies and natural histories of most species are insufficiently characterized to permit predictions with respect to issues such as population genetic structure. A notable exception is the group of cactophilic Drosophila endemic to the Sonoran Desert of North America. One of these species, D. nigrospiracula, exhibits no population subdivision anywhere in its range. Here we present evidence suggesting that the timing of mating in relation to dispersal contributes to the panmixia observed in this species.
虽然果蝇物种为进化生物学提供了重要的模型系统，但大多数物种的生态和自然史特征尚不充分，无法就种群遗传结构等问题进行预测。一个显著的例外是北美索诺兰沙漠特有的嗜仙人掌果蝇群体。其中一个物种，黑腹果蝇，在其分布范围内的任何地方都没有种群细分。在这里，我们提供的证据表明，交配时间与扩散的关系有助于该物种中观察到的随机交配。
