Is heterogeneity of catchability in capture-recapture studies a mere sampling artifact or a biologically relevant feature of the population?
Is heterogeneity of catchability in capture-recapture studies a mere sampling artifact or a biologically relevant feature of the population?
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DOI：
10.1007/s10144-008-0090-8
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发表时间：
2008-07-01
影响因子：
1.7
通讯作者：
Pradel, Roger
中科院分区：
文献类型：
--
作者：
Crespin, Laurent;Choquet, Remi;Pradel, Roger
在捕获-再捕获研究中遇到的个体之间的可捕性（HC）的异质性一直被认为是一种不利因素。然而，异质捕获概率可能反映了有趣但隐藏的人口特征，如社会地位。困难在于区分这种内在异质性和研究本身引起的外在异质性。到目前为止，种群生态学家还不能区分这两个来源的捕获异质性的变化，因为，在存在的捕获异质性的数据，他们经常使用一个过于简单的方法。这种传统的方法，它包括将两个共同的来源缺乏适合（瞬态和陷阱依赖），不直接模拟HC，因此不能调查其生物学意义。在这种情况下，我们建议，开放的人群，直接采用多事件模型的HC模型。多事件模型使得有可能打破HC分为两类被视为不确定状态的可捕性。随着异质性系数的引入，随着时间的推移，在两个类的捕获模型的比例概率，我们的方法允许在一个吝啬的方式调查HC。在本文中，我们采用这种新的方法和传统的方法，长期的数据集的雄性鹿鼠Peromyscus maniculatus。然后，我们分别比较了每种方法的13个候选模型。我们的结果表明，新的方法是上级优于传统的方法。
The heterogeneity of catchability (HC) among the individuals encountered during a capture-recapture study has long been regarded as a liability. However, heterogeneous capture probabilities may reflect interesting but hidden features of the population, such as social status. The difficulty is to distinguish between this intrinsic heterogeneity and the extrinsic heterogeneity induced by the study itself. So far, population ecologists have not been able to distinguish between these two sources of variation in capture heterogeneity because, in the presence of heterogeneity of capture in the data, they have frequently used a too simple approach. This traditional approach, which consists of incorporating two common sources of lack of fit (transience and trap-dependence), does not directly model the HC and thus cannot investigate its biological meaning. In this context, we propose, for open populations, to directly model the HC by employing multievent models. Multievent models make it possible to break HC into two classes of catchability viewed as uncertain states. With the introduction of a coefficient of heterogeneity to model proportional probabilities of capture over time in the two classes, our approach allows the investigation of HC in a parsimonious way. In this paper, we apply both this new approach and the traditional approach to a long-term data set of male deer mice Peromyscus maniculatus. We then compare 13 candidate models separately for each approach. Our results indicate that the new approach is superior to the traditional approach.