CRB: Mating System and Effective Population Size: An Analysis of Philopatry and Multiple Paternity in Green Sea Turtles

9322544帕克动物的行为决定了等位基因在种群内和种群之间的运动，从而定义了种群遗传参数的基本特征。此外，基因流动受到从出生到繁殖地的扩散事件的调节，以及个体一生中随后的扩散。最后，地点的坚韧可能会降低种群的遗传多样性，因为个体每年都会回到相同的繁育地点。这项保护和恢复生物学研究的目的是确定濒危绿海龟两个种群的交配系统。具体地说，PI将使用分子方法准确地重建该物种的亲本基因类型，并使用这些数据来扩展现有的关于不同种群的交配系统和有效种群规模以及繁殖失败率之间的相互作用的模型。为了有效地理解繁殖系统在维持濒危物种野生种群遗传多样性中的作用，有必要测量种群内和种群间的父子关系模式。从本质上讲，遗传多样性将在来自不同种群的成员的一定频率的亲子关系下保持。这项研究很重要，因为它将以非破坏性的方式使用分子标记来监测在自然界中很难观察到其行为的物种提高遗传多样性的潜力。***

9322544 Parker The behavior of animals determines the movement of alleles within and among populations and thus defines basic characteristics of population genetic parameters. In addition, gene flow is regulated by dispersal events from natal to breeding sites, and by subsequent dispersal during the lifetime of the individual. Finally, site tenacity (philopatry) may reduce genetic diversity in a population because individuals return to the same breeding sites each year. The purpose of this conservation and restoration biology research is to determine the mating systems in two populations of the endangered green sea turtle. Specifically, the PI will use molecular approaches to accurately reconstruct parental genotypes in this species, and use these data to extend existing models of the interaction between mating systems and effective population size for different populations and rates of reproductive failure in the green sea turtle. %%% To effectively understand the role of breeding systems in the maintenance of genetic diversity in wild populations of endangered species, it is necessary to measure patterns of within- versus between-population paternity. Essentially, genetic diversity will be maintained under a certain frequency of paternity from members of disparate populations. This research is important because it will use molecular markers in a non-destructive fashion to monitor the potential for enhancing genetic diversity in a species whose behavior is difficult to observe in nature. ***