Wells Marta Martínez, Henry Charles S
Department of Ecology and Evolutionary Biology, Box U-43.
University of Connecticut, Storrs, CT, 06269, USA.
Evolution. 1992 Feb;46(1):31-42. doi: 10.1111/j.1558-5646.1992.tb01982.x.
Male and female lacewings tremulate during courtship, establishing duets that always precede copulation. Three distinct courtship songs are found in populations of the green lacewing Chrysoperla plorabunda (P1, P2 and P3 song morphs). Analysis of five features of the songs for individuals collected from Connecticut, Idaho, Oregon and California showed few differences within song morphs, but sympatric song morphs differed significantly in temporal features of the songs and their mode of presentation. Playback experiments using recorded songs were performed on females with all possible sympatric and allopatric combinations of females and recorded songs. The results showed that females strongly prefer to duet with recordings of males of their own song type and usually showed no responses to songs of other types. Thus, song differences are effective barriers to reproduction between the sympatric morphs. Our results support the hypothesis that the three song morphs are true biological species.
雄性和雌性草蛉在求偶期间会颤动,形成总是先于交配的二重奏。在绿草蛉Chrysoperla plorabunda种群中发现了三种不同的求偶歌曲(P1、P2和P3歌曲形态)。对从康涅狄格州、爱达荷州、俄勒冈州和加利福尼亚州采集的个体的歌曲的五个特征进行分析,结果表明歌曲形态内差异不大,但同域分布的歌曲形态在歌曲的时间特征及其呈现方式上有显著差异。使用录制歌曲进行的回放实验在雌性身上进行,采用了所有可能的雌性与录制歌曲的同域和异域组合。结果表明,雌性强烈倾向于与自己歌曲类型的雄性录制歌曲进行二重奏,通常对其他类型的歌曲没有反应。因此,歌曲差异是同域形态之间繁殖的有效障碍。我们的结果支持了这一假设,即这三种歌曲形态是真正的生物物种。