Kyriacou C P, van den Berg M J, Hall J C
Department of Genetics, University of Leicester, U.K.
Behav Genet. 1990 Sep;20(5):617-44. doi: 10.1007/BF01065875.
Courtship songs of normal males and those expressing short-period, long-period, and arrhythmic mutations at the period (per) locus of Drosophila melanogaster have been reanalyzed for rhythmic components, using spectral treatments of the fluctuating rates of tone pulse production that occur during courtship. It was concluded, as in previous studies, that such songs are strongly rhythmic, except for courtships performed by per01 males. Songs produced by males expressing this and other per alleles were compared to computer-generated "random" ones. Interpulse interval variations influenced by per01 and songs stimulated to be arrhythmic both were found to be associated with cryptic rhythmicities; several such period values, extracted by the spectral analyses, defined very short cycle durations. We discuss the implications of these findings and of some recently reported results that have challenged the existence of rhythmicity in Drosophila songs.
利用对果蝇求偶期间音调脉冲产生的波动速率进行频谱处理的方法，对正常雄性果蝇以及在黑腹果蝇周期（per）基因座处表现出短周期、长周期和无节律突变的果蝇的求偶歌曲的节奏成分进行了重新分析。与之前的研究一样，得出的结论是，除了per01雄性果蝇的求偶行为外，此类歌曲具有很强的节奏感。将表达该基因及其他per等位基因的雄性果蝇所产生的歌曲与计算机生成的“随机”歌曲进行了比较。发现受per01影响的脉冲间隔变化以及被刺激产生无节律的歌曲都与隐藏的节律性有关；通过频谱分析提取的几个这样的周期值定义了非常短的周期持续时间。我们讨论了这些发现以及最近报道的一些对果蝇歌曲中节律性存在提出质疑的结果的含义。
