Isoherranen E, Aspi J, Hoikkala A
Department of Biology, University of Oulu, Finland.
Hereditas. 1999;131(3):203-9. doi: 10.1111/j.1601-5223.1999.t01-1-00203.x.
Females of two Drosophila virilis group species, D. virilis and D. montana, have different requirements for the courting males. In the present study we have examined species differences in female receptivity and male courtship song requirement using females' acceptance signal instead of copulation for measuring female readiness to mate. Behavior of D. virilis and D. montana females and F1 and backcross hybrid females was observed in a single-pair courtships with D. virilis and D. montana males and normal and wingless (mute) F1 hybrid males. D. virilis females were very receptive and they commonly accepted the courtship of males unable to produce courtship song. D. montana females, on the contrary, had a low receptivity and these females accepted the courting male only after hearing his song. Interspecific F1 and backcross (BCm) females resembled D. virilis more than D. montana in their receptivity. These females, however, resembled D. montana in their song requirement. These findings suggest that female song requirement and female receptivity are determined by different genetic factors.
在果蝇属的两个物种，即粗壮果蝇（D. virilis）和蒙大拿果蝇（D. montana）中，雌蝇对求偶雄蝇有不同的要求。在本研究中，我们使用雌蝇的接受信号而非交配来衡量雌蝇的交配意愿，以此研究了雌蝇接受能力和雄蝇求偶歌声要求方面的物种差异。在与粗壮果蝇和蒙大拿果蝇雄蝇以及正常和无翅（无声）F1杂交雄蝇的单对求偶过程中，观察了粗壮果蝇和蒙大拿果蝇雌蝇以及F1和回交杂种雌蝇的行为。粗壮果蝇雌蝇接受能力很强，它们通常会接受无法发出求偶歌声的雄蝇的求偶。相反，蒙大拿果蝇雌蝇接受能力较低，这些雌蝇只有在听到雄蝇的歌声后才会接受求偶的雄蝇。种间F1和回交（BCm）雌蝇在接受能力上比蒙大拿果蝇更类似于粗壮果蝇。然而，这些雌蝇在对歌声的要求上类似于蒙大拿果蝇。这些发现表明，雌蝇对歌声的要求和雌蝇的接受能力是由不同的遗传因素决定的。
