Dissertation Research: The Effects of Inbreeding on Parental Behavior and Reproductive Success in Two Populations of Peromyscus polionotus

[321187 . Altmann]近亲繁殖对许多种类的动物，包括许多哺乳动物造成的有害的人口统计学后果已经有了充分的记录。尽管这些缺陷与生命的早期阶段特别相关，如新生儿期的死亡率和出生时产仔数减少，但产生这些结果的近端机制仍未被探索。此外，大多数先前的研究都将近亲繁殖的有害影响与后代的某些缺陷联系起来，而没有考虑到亲代照顾不足可能是原因。苏珊·w·马古利斯女士的博士论文研究将调查生殖成功的行为方面，以及那些可能在个人以后的生活中表现出来的因素，比如近亲繁殖的父母养育子女的行为适当性，并将区分父母和后代的影响。近交对交配行为、亲代行为和繁殖成功的影响将在两个圈养鹿鼠种群中进行研究，一个来自孤立的岛屿种群，另一个来自广泛的大陆种群。不同的繁殖成功率和亲代行为的充分性将在父母双方都是近交的，都不是近交的，只有母亲近交的，只有父亲近交的配对中进行评估。从本研究中获得的信息可纳入圈养种群和濒危物种的管理计划。

9321187 Altmann The detrimental demographic consequences of inbreeding have been well documented for many kinds of animals, including a number of mammalian species. Although these deficits have been associated particularly with early stages of life, such as mortality during the neonatal period and reduced litter size at birth, proximal mechanisms producing these outcomes remain largely unexplored. Furthermore, most previous studies have associated the detrimental effects of inbreeding with some deficit in the offspring, and have not considered the possibility that inadequate parental care may be the cause. The doctoral-dissertation research of Ms. Susan W. Margulis will investigate behavioral aspects of reproductive success, and those factors that may manifest themselves later in an individual's life, such as behavioral adequacy of parenting by inbred parents, and will distinguish between parental and offspring effects. The effects of inbreeding on mating behavior, parental behavior, and reproductive success will be studied in two captive populations of deermouse, one derived from an isolated, island population, and one from a widespread, mainland population. Differential reproductive success and adequacy of parental behavior will be evaluated in pairs in which both parents are inbred, neither is inbred, only the mother is inbred, and only the father is inbred. The information gained from this study may be incorporated into management plans for captive populations and endangered species.