Abstract Context. To re-establish a population of the threatened numbat (Myrmecobius fasciatus) in a newly created safe haven at Mount Gibson Wildlife Sanctuary, in the semi-arid zone of Western Australia, wild-born and captive-bred individuals of both sexes were translocated. Aim. To compare: (1) the use of refuges by wild-born numbats pre- and post-translocation, and (2) the survival and refuge use of captive-bred numbats compared with wild-sourced numbats post-translocation. Methods. Monitoring via radio-tracking facilitated the gathering of information on survival and behaviour of numbats pre- and post-translocation, and allowed a comparison of how different factors (e.g. captive-bred or wild-born; male or female) influenced survival and establishment in a new environment. Key results. There were no significant differences in survival between sexes or between wild-born and captive-bred individuals. However, there were some differences in behaviour between sexes and source populations. Captive-bred numbats, regardless of sex, made greater use of tree hollows as nocturnal refuges than did their wild-born counterparts. Among wild-born numbats, there was a comparatively greater use of tree hollows and logs on the ground by males at Mount Gibson than at Scotia. The use of diurnal escape refuges did not vary between sexes or between captive-bred and wild-born individuals. Conclusions. On the basis of the information presented here, we conclude that, in the absence of predation by mammalian predators, and with suitable release habitat, captive-bred-to-wild translocations of numbats may be as likely to succeed as are wild-to-wild translocations, at least over the first few months post-translocation. Implications. Optimising the size and genetic diversity of the founding population by using animals from a variety of sources may not need to be heavily constrained by concerns about the ability of captive-bred numbats to adapt to and survive life in the wild.

中文翻译：

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野生与圈养繁殖：易位食蚁兽（Myrmecobius fasciatus）的生存和避难选择比较

摘要上下文。为了在西澳大利亚半干旱区吉布森山野生动物保护区新建的安全避风港重建受威胁的食蚁兽（Myrmecobius fasciatus）种群，野生出生和圈养繁殖的两性个体都进行了迁移。目标。比较：(1) 易位前和易位后野生食蚁兽对避难所的使用，以及 (2) 与易位后野生来源的食蚁兽相比，圈养繁殖的食蚁兽的生存和避难所使用情况。方法。通过无线电跟踪进行监测有助于收集关于易位前和易位后食蚁兽的生存和行为的信息，并允许比较不同因素（例如圈养繁殖或野生出生；雄性或雌性）如何影响野生食蚁兽的生存和建立。一个新的环境。关键结果。两性之间或野生出生和圈养繁殖的个体之间的存活率没有显着差异。然而，性别和来源人群之间的行为存在一些差异。圈养繁殖的食蚁兽，无论性别，比野生食蚁兽更多地利用树洞作为夜间避难所。在野生食蚁兽中，吉布森山的雄性比斯科舍省更多地使用地面上的树洞和原木。昼夜逃生避难所的使用在性别之间或圈养繁殖和野生出生的个体之间没有变化。结论。根据此处提供的信息，我们得出的结论是，在没有哺乳动物捕食者的捕食和适当的释放栖息地的情况下，至少在易位后的最初几个月，袋食蚁兽从圈养繁殖到野生的易位可能与从野生到野生的易位一样成功。影响。通过使用来自各种来源的动物来优化创始种群的规模和遗传多样性可能不需要受到对圈养袋食蚁兽适应和生存野外生活能力的担忧的严重限制。