Lockyear K M, Waddell W T, Goodrowe K L, MacDonald S E
Toronto Zoo, Health Department, Reproductive Physiology Unit, Scarborough, Ontario, Canada.
Zoo Biol. 2009 May;28(3):214-29. doi: 10.1002/zoo.20224.
The critically endangered red wolf (Canis rufus) has been subject to a strictly managed captive breeding program for three decades. A retrospective demographic analysis of the captive population was performed based on data from the red wolf studbook. Data analyses revealed a decrease in the effective population size relative to the total population size, and changes in age structure and inbreeding coefficients over time. To varying degrees, the probability of successful breeding and litter sizes declined in association with increasing dam age and sire inbreeding coefficients. Neonate survival also declined with increasing dam age. Recent changes in strategies regarding breed-pair recommendations have resulted in moderate increases in reproductive success.
极度濒危的红狼（Canis rufus）已经接受严格管理的圈养繁殖计划长达三十年。基于红狼种畜登记簿的数据，对圈养种群进行了回顾性人口统计学分析。数据分析显示，有效种群规模相对于总种群规模有所下降，且年龄结构和近亲繁殖系数随时间发生了变化。在不同程度上，随着母狼年龄的增长和公狼近亲繁殖系数的增加，成功繁殖的概率和窝仔数均有所下降。新生幼崽的存活率也随着母狼年龄的增长而下降。最近在繁殖配对建议策略上的变化已使繁殖成功率适度提高。
