雄性不育与黑腹果蝇的性比特征。二、多次交配与整体雄性生育力选择。
Virility Deficiency and the Sex-Ratio Trait in DROSOPHILA PSEUDOOBSCURA. II. Multiple Mating and Overall Virility Selection.
机构信息
Institute of Animal Resource Ecology, The University of British Columbia, Vancouver, British Columbia, Canada V6T 1W5.
出版信息
Genetics. 1983 Nov;105(3):663-79. doi: 10.1093/genetics/105.3.663.
Previous studies on fitness components of Drosophila have shown the over-whelming importance of virility selection. In this study, virility selection is further partitioned into two components-one with respect to virgin females and the other with respect to nonvirgin females. The relative importance of the two components to the overall virility selection depends on the remating tendency of females which is investigated here. A theoretical model is then proposed to estimate virility selection under the condition of frequent female remating. The model is tested experimentally. When this model is applied to the Sex-Ratio system of D. pseudoobscura, Sex-Ratio males are found to suffer substantial virility reduction. The significance of this finding to the Sex-Ratio problem is discussed.
先前关于果蝇适应成分的研究表明，生殖力选择具有压倒性的重要性。在本研究中，生殖力选择进一步分为两个成分——一个是针对处女雌蝇的，另一个是针对非处女雌蝇的。这两个成分对整体生殖力选择的相对重要性取决于雌性的再交配倾向，这是本研究调查的内容。然后提出了一个理论模型，用于在雌性频繁再交配的情况下估计生殖力选择。该模型经过实验验证。当将该模型应用于 D. pseudoobscura 的性比系统时，发现性比雄蝇的生殖力受到了实质性的降低。这一发现对性比问题的意义进行了讨论。
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