Piñeiro R, Carracedo M C, Izquierdo J I, Casares P
Departamento de Genetica, Universidad de Oviedo, Spain.
Behav Genet. 1993 Jan;23(1):77-83. doi: 10.1007/BF01067556.
A wild population of Drosophila melanogaster was subjected to selection for high and low female receptivity. Selection was only applied in females on the basis of the mating times observed in a 30-min period. We applied a selection paradigm that allowed us to conclude that females unmated after 30 min correspond to the truncated upper tail of the distribution underlying mating times. Selection was successful, with mean mating times of about 5 min for the high lines, 35 min for the low lines, and 12 min for the control. Receptivity of the selection lines remained steady after 42 generations of relaxed selection, suggesting a lack of natural selection on receptivity in laboratory conditions. We also found a clear relationship between high or low receptivity and high or low frequency of hybridization with D. simulans males, emphasizing the role of female receptivity in maintaining isolation with its sibling species D. simulans.
对黑腹果蝇的一个野生种群进行了高和低雌性接受性的选择。仅根据在30分钟内观察到的交配次数对雌性进行选择。我们应用了一种选择范式，使我们能够得出结论，30分钟后未交配的雌性对应于交配时间分布的截短上尾。选择是成功的，高选择系的平均交配时间约为5分钟，低选择系为35分钟，对照系为12分钟。在经过42代的放松选择后，选择系的接受性保持稳定，这表明在实验室条件下对接受性缺乏自然选择。我们还发现高或低接受性与与拟果蝇雄性杂交的高或低频率之间存在明显关系，强调了雌性接受性在与其同胞物种拟果蝇保持隔离中的作用。
