Mating Asymmetries and Phylogeny in the Drosophila melanogaster Species Complex
Mating Asymmetries and Phylogeny in the Drosophila melanogaster Species Complex
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果蝇物种复合体的交配不对称性和系统发育
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发表时间：
1988
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通讯作者：
H. Robertson
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作者：
H. Robertson
研究了果蝇物种复合体的四个物种之间的种间求偶和交配倾向，以检验金城将不对称种间交配与系统发育方向相关的假设。揭示出强烈的不对称性，特别是涉及 Sechellia 和 mauritiana 雄性与 simulans 雌性授精的能力。提出了涉及部分机械隔离的这些不对称性的可能基础。与系统发育的关系（如果有的话）仍不清楚。 Kaneshiro (1976, 1983) 使用几种夏威夷果蝇的独立推断的系统发育表明，果蝇和其他生物体中众所周知的种间交配的不对称倾向可能反映了系统发育的方向。他假设衍生物种的雌性更有可能与祖先物种的雄性交配，反之亦然，因为衍生物种求爱的复杂性降低了。这种潜在的强大假设现已经过多次测试和完善，但不对称的实际行为基础尚不清楚，并且与系统发育的关系尚未被普遍接受（有关评论，请参阅 Giddings 和 Templeton 1983）。果蝇物种复合体被用作与 Kaneshiro 模型相冲突的例子（Watanabe 和 Kawanishi 1979）。对当时在该复合体中已知的三个物种的早期分析并没有解决这个问题（Robertson 1983a），但现在第四个物种，D. sechellia，已经被发现（Tsacas 和 Bachli 1981）。它与 simulans 和 mauritiana 密切相关（Lemeunier 和 Ashburner 1 这项工作得到了威斯康星大学麦迪逊分校动物学系的 Guyer 博士后奖学金的支持。2威斯康星大学，动物学系，麦迪逊，威斯康星州 53706。目前地址：伊利诺伊大学昆虫学系，厄巴纳，伊利诺斯州 6180I。72 1984，拉雪兹等人，1986）。在这里，我描述了目前已知的四个物种的种间求偶和交配倾向，提出了所观察到的不对称性的新基础，并讨论了与系统发育的可能关系。
The propensities for interspecific courtship and mating among the four species of the Drosophila melanogaster species complex were studied to examine Kaneshiro's hypothesis relating asymmetrical interspecific mating to the direction of phylogeny. Strong asymmetries were revealed, especially involving the ability of sechellia and mauritiana males to inseminate simulans females. A possible basis for these asymmetries involving partial mechanical isolation is proposed. The relationship to phylogeny, if any, remains unclear. USING THE INDEPENDENTLY INFERRED PHYLOGENY of several Hawaiian Drosophila, Kaneshiro (1976, 1983) has suggested that the well-known asymmetrical propensities for interspecific mating in Drosophila and other organisms may reflect the direction of phylogeny. He hypothesized that females of derived species are more likely to mate with males of ancestral species than vice-versa because of a loss in complexity in the courtship of the derived species. This potentially powerful hypothesis has now been subjected to several tests and refinement, but the actual behavioral basis for the asymmetries is not known for any example , and the relationship to phylogeny is not yet generally accepted (for a review, see Giddings and Templeton 1983). The Drosophila melanogaster species complex has been used as an example supposedly conflicting with Kaneshiro's model (Watanabe and Kawanishi 1979). An earlier analysis of the three species then known in the complex did not resolve the question (Robertson 1983a), but now a fourth species, D. sechellia, has been discovered (Tsacas and Bachli 1981). It is very closely related to simulans and mauritiana (Lemeunier and Ashburner 1 This work was supported by a Guyer Postdoctoral Fellowship from the Department of Zoology, University of Wisconsin . Madison. 2University of Wisconsin, Departmen t of Zoology, Madison, Wisconsin 53706. Present address: Department of Entomology, University of Illinois, Urbana , Illinois 6180I. 72 1984, Lachaise et al. 1986). Here I describe the propensities for interspecific courtship and mating for the four species now known, suggest a novel basis for the asymmetries observed, and discuss possible relationships to phylogeny.