REPRODUCTIVE ECOLOGY OF THE BOREAL RIPARIAN GUILD OF DROSOPHILA
REPRODUCTIVE ECOLOGY OF THE BOREAL RIPARIAN GUILD OF DROSOPHILA
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DOI：
10.1111/j.1600-0587.1993.tb00059.x
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发表时间：
1993-01-01
期刊：
影响因子：
5.9
通讯作者：
HEIKKINEN, E
中科院分区：
文献类型：
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作者：
ASPI, J;LUMME, J;HEIKKINEN, E
对同域分布的4个雄性果蝇群（双翅目：果蝇科）的生殖生态进行了野外研究，探讨了维持物种隔离的因素。从成虫的空间分布来看，在同一种群中遇到异种个体的概率很高。直接的野外观察表明，雄性也会向外来物种的雌性求爱，但种间求爱不会导致交配。这些物种的主要交配期只持续了几个星期，交配期的时间在三个最常见的物种中有明显的差异。物种之间的生殖特征转移可以解释在交配期时间上观察到的差异，但它们可能是在其他选择压力的背景下产生的，而不是阻止种间的求爱和交配。
The reproductive ecology of four sympatric Drosophila virilis group species (Diptera: Drosophilidae) was studied in the field to trace the factors maintaining species isolation. There was a high probability of meeting a heterospecific individual belonging to the same species group on the basis of adult spatial occurrence. Direct field observations revealed that the males court also females of the foreign species, but interspecific courtships do not lead to mating. The main mating period among these species lasted only several weeks, and the timing of mating periods differed markedly in the three most common species. Reproductive character displacement between species may explain the observed differences in the timing of the mating periods, but they could have arisen in the context of other selective pressures than the prevention of interspecific courtships and matings.