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首页> 外文期刊>American journal of primatology >Kinda baboons (Papio kindae) and grayfoot chacma baboons (P. ursinus griseipes) hybridize in the Kafue river valley, Zambia
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Kinda baboons (Papio kindae) and grayfoot chacma baboons (P. ursinus griseipes) hybridize in the Kafue river valley, Zambia

机译：金达狒狒（Papio kindae）和灰足狒狒（P. ursinus griseipes）在赞比亚卡富厄河谷杂交

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The ranges of small kinda (Papio kindae) and much larger grayfooted chacma (P. ursinus griseipes) baboons adjoin in the Kafue National Park, Zambia. In a visual survey of baboons at 48 sites in the Kafue River drainage we found that, contrary to previous reports, groups at the species interface near the town of Ngoma are phenotypically diverse and presumably formed by multigenerational hybridization. Mitochondrial and/or Y-chromosome genetic markers from fecal samples (N=164) collected at 29 sites support this conclusion. Groups with phenotypic signs of a history of hybridization also had taxon-specific mitochondria and Y-haplotypes from both parental species. Although the distribution of mitochondrial haplotypes largely mirrored that of external phenotypes, a significant proportion of male specimens from grayfoot as well as hybrid groups carried kinda Y-chromosomes, and kinda Y-chromosomes were involved in all observed cases of mitochondrial/Y-chromosome discordance. These observations are consistent with, though they do not prove, a population history in which the range of chacmas and the hybrid zone have advanced at the expense of the kinda range. They also suggest that, unexpectedly, kinda male×chacma female matings are much more common than the reciprocal cross in the ancestry of hybrids. We suggest that distinctive male kinda behavior and the "juvenile" appearance of kinda baboons of both sexes, perhaps combined with obstetric difficulties of a small kinda female carrying the large offspring of a chacma male, may account for this bias.
机译：在赞比亚的卡富厄国家公园内，小狒狒（Papio kindae）和更大的灰足狒狒（P. ursinus griseipes）狒狒分布范围很广。在对卡富厄河流域48个站点的狒狒进行的视觉调查中，我们发现，与以前的报道相反，恩戈马镇附近物种界面处的群体在表型上是多样的，大概是通过多代杂交形成的。从29个地点收集的粪便样本（N = 164）中的线粒体和/或Y染色体遗传标记支持这一结论。具有杂交史表型迹象的群体也具有来自两个亲本物种的分类群特异性线粒体和Y-单倍型。尽管线粒体单倍型的分布在很大程度上反映了外部表型的分布，但灰足羊和杂种群体的雄性标本中有相当一部分携带有Y型染色体，并且所有观察到的线粒体/ Y型染色体不一致情况都涉及到Y型染色体。 。这些观察结果与人口历史相吻合，尽管它们没有得到证实，但人口历史中，恰恰马斯和混合区的范围有所增加，而牺牲了适度的范围。他们还表明，出乎意料的是，在杂交祖先中，公种×母种的交配比相互交配更为普遍。我们认为，男性种的特殊行为和两种雌性狒狒的“幼稚”外观，可能与携带矮种男性大后代的小种雌性的产科困难相结合，可能是造成这种偏见的原因。

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