Tomaru Masatoshi, Yamada Hirokazu, Oguma Yuzuru
Drosophila Genetic Resource Center, Kyoto Institute of Technology, Saga-Ippongi-cho, Ukyo-ku, Japan.
Genes Genet Syst. 2004 Jun;79(3):145-50. doi: 10.1266/ggs.79.145.
In Drosophila sechellia, females accept males that sing heterospecific songs less than those that do not sing, whereas in D. melanogaster and D. simulans, females accept males that sing heterospecific song more than those that do not sing. Here we studied the sexual isolation of D. sechellia and its siblings using interspecific hybrids to reveal the mechanisms underlying female mate recognition. The females of hybrids mated more with winged males of the parent species than with wingless ones, suggesting that the discrimination against heterospecific songs by D. sechellia females is recessive. Female preference for courtship songs seems to be inherited additively or semidominantly. In addition, we examined female receptivity without the stimuli of courtship songs by comparing the mating frequencies between the crosses using wingless males and found that it is also inherited additively or semidominantly.
在塞舌尔果蝇中，雌性接受唱异种歌曲的雄性的程度低于不唱歌的雄性，而在黑腹果蝇和拟暗果蝇中，雌性接受唱异种歌曲的雄性的程度高于不唱歌的雄性。在这里，我们利用种间杂种研究了塞舌尔果蝇及其近缘种的性隔离，以揭示雌性配偶识别的潜在机制。杂种雌性与亲本物种的有翅雄性交配的次数多于与无翅雄性交配的次数，这表明塞舌尔果蝇雌性对异种歌曲的辨别能力是隐性的。雌性对求偶歌曲的偏好似乎是以加性或半显性方式遗传的。此外，我们通过比较使用无翅雄性的杂交组合之间的交配频率，研究了在没有求偶歌曲刺激的情况下雌性的接受能力，发现它也是以加性或半显性方式遗传的。
