Dissertation Research: Determinants of Male Reproductive Success in a Baboon Hybrid Zone: A Behavioral and Genetic Analysis

这个项目是第一个在阿瓦什国家公园（ANP）狒狒杂交区研究决定雄性繁殖成功的因素。该项目整合了对一个单一群体的遗传和行为研究，该群体的祖先是两种类型的狒狒，阿努比斯狒狒和哈马德里亚狒狒。Hamadryas雄性将雌性聚集到一个雄性单位中，并持续维持这个单位，而anubis雄性只竞争和保护有情态的雌性。杂交雄性表现出中间行为。通过研究繁殖行为与后代数量的关系，比较不同雄性繁殖策略的短期繁殖成功率。在核基因组中发现的分子遗传标记将用于评估遗传杂交性和亲本分析。将收集线粒体DNA序列数据与核标记物进行比较。雄性繁殖策略的不同成功影响了杂交区的动态，特别是因为雄性迁移似乎介导了基因流动。除了雄性繁殖策略和成功之外，该项目还将评价雌性祖先和社会结构对一个雄性单位成功的影响。本研究获得的知识将阐明在ANP杂交带中起作用的进化力量，从而有助于理解社会因素在杂交带起源和维持中的重要性。

This project is the first to look at factors determining male reproductive success in the Awash National Park (ANP) baboon hybrid zone. The project integrates genetic and behavioral studies of a single group that has mixed ancestry from two types of baboons, anubis and hamadryas. Hamadryas males herd females into one male units which they continuously maintain, whereas anubis males compete for and guard only estrous females. Hybrid males exhibit intermediate behavior. The short term reproductive success of different male reproductive strategies will be compared by examining the relationship of reproductive behavior and number of offspring sired. Molecular genetic markers found in the nuclear genome will be used to assess genetic hybridity and for parental analysis. Mitochondrial DNA sequence data will be collected for comparison with the nuclear markers. Differential success of male reproductive strategies affects the dynamics of the hybrid zone, particularly since male migration appears to mediate gene flow. In addition to male reproductive strategies and success, the project will also evaluate the effects of female ancestry and social structure on the success of one male units. The knowledge gained by this study will elucidate the evolutionary forces acting in the ANP hybrid zone and, consequently, contribute to an understanding of the importance of social factors in the origin and maintenance of hybrid zones.