Hafen T, Neveu H, Rumpler Y, Wilden I, Zimmermann E
Deutsches Primatenzentrum, Göttingen, Deutschland.
Folia Primatol (Basel). 1998;69 Suppl 1:342-56. doi: 10.1159/000052723.
Sexual advertisement calls of male mouse lemurs from two neighbouring demes in a dry deciduous forest of western Madagascar were recorded during the breeding season. Demes were located about 1.5 km apart with no geographic barrier between them. They were characterised morphometrically and genotyped by RAPD fingerprinting. According to univariate and multivariate statistical analysis, demes differed neither in body measurements, nor in the banding patterns produced by RAPD fingerprinting. The acoustic pattern of the advertisement call, however, showed significant differences: Six variables of the frequency and time domain differed between the demes. Discriminant function analysis revealed that one variable, total call duration, was sufficient to classify more than 89% of the calls correctly to the corresponding deme. We postulate that these differences are comparable to dialects in birds, because demes were morphologically and genetically indistinguishable and no barrier prevented genetic exchange between them. Possible explanations for the emergence of dialects in a prosimian species are outlined.
在马达加斯加西部干燥落叶林的繁殖季节，记录了来自两个相邻种群的雄性鼠狐猴的求偶广告叫声。两个种群相距约1.5公里，它们之间没有地理障碍。对它们进行了形态测量，并通过随机扩增多态性DNA（RAPD）指纹分析进行基因分型。根据单变量和多变量统计分析，两个种群在身体测量方面没有差异，在RAPD指纹分析产生的条带模式上也没有差异。然而，求偶广告叫声的声学模式显示出显著差异：两个种群在频率和时域的六个变量上存在差异。判别函数分析表明，一个变量，即总叫声持续时间，足以将超过89%的叫声正确分类到相应的种群。我们推测这些差异与鸟类的方言类似，因为两个种群在形态和基因上无法区分，且没有障碍阻止它们之间的基因交流。文中概述了原猴类物种中方言出现的可能解释。
