REPRODUCTIVE-BEHAVIOR OF FEMALE BUNTINGS - ISOLATING MECHANISMS IN A HYBRIDIZING PAIR OF SPECIES
REPRODUCTIVE-BEHAVIOR OF FEMALE BUNTINGS - ISOLATING MECHANISMS IN A HYBRIDIZING PAIR OF SPECIES
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DOI：
10.1111/j.1558-5646.1990.tb05202.x
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发表时间：
1990-03-01
期刊：
影响因子：
3.3
通讯作者：
BAKER, AEM
中科院分区：
文献类型：
--
作者：
BAKER, MC;BAKER, AEM
雄鸟的羽毛特征是不同的，但这两个物种可以学习对方的歌曲。由靛蓝、青绿和杂交个体组成的种群出现在北美大平原，从形态计量学数据推断出了分类交配。我们设计了一种实验室分析方法，以确定女性对同种和异种雄性的视觉和声音特征的偏好，以及这些特征的混合，例如在重叠种群中可能遇到的混合。两个物种的雌性在暴露于同种羽毛和鸣叫时比暴露于异种羽毛和鸣叫时表现出更多的求偶行为。雌性对同种羽毛与异种鸣叫和异种羽毛与同种鸣叫的组合有直接和相似的反应。因此，在缺乏其他潜在重要变量的情况下，雌性的生殖行为与选择性交配的假设是一致的，这种交配是基于雄性的声音和视觉特征，并由雌性在这种半物种对中的选择引起的。
The plumage characteristics of male Indigo and Lazuli Buntings are distinct, but the two species can learn each other''s songs. Populations comprising Indigo, Lazuli and hybrid individuals occur in the Great Plains of North America, and assortive mating has been inferred from morphometric data. We devised a laboratory assay for determining female preferences for visual and vocal characteristics of conspecific and heterospecific males and for mixtures of these characteristics, such as might be encountered in an overlap population. Females of both species gave more copulation-solicitation displays when exposed to conspecific plumage and vocalizations than when exposed to heterospecific plumage and vocalizations. Females gave intemediate and similar responses to the combinations of conspecific plumage with heterospecific vocalizations and heterospecific plumage with conspecific vocalizations. Thus, in the absence of other potentially important variables, female reproductive behavior is consistent with the hypothesis of assortive mating, based upon both vocal and visual traits of the males and caused by female choice in this semispecies pair.