Abstract In a reintroduced population, the social behavior of the species can strongly affect the long-term viability of the population through its effects on movement, information flow, disease spread and the population's genetic variability. Therefore, information on the social behavior of a reintroduced population can contribute to conservation practices; however, its importance is often underestimated. The initial phase of the Asiatic wild ass's (Equus hemionus) reintroduction in Israel has been considered a success, and the population is currently estimated at more than 250 individuals. However, the current social structure of the population remained unknown. We aimed to study this important population trait and to provide helpful information for efficient conservation and management protocols. The study was based on direct observations that were conducted over four consecutive years, and on the analyses of groups' composition and female groups' stability. Female groups accompanied by males constituted only 5% of the total 659 observations, males were observed to be mainly solitary or in groups of various sizes, and females were organized in non-stable groups, indicating that the reintroduced population exhibits a fission-fusion social structure. Identifying the social structure for the species in the expanding Negev population of the Asiatic wild ass can assist in implementing future reintroductions and can contribute to effective management decisions aimed at protecting the species.

中文翻译：

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重新引入的有蹄类动物的裂变融合社会结构：对保护的影响

摘要 在重新引入的种群中，物种的社会行为可以通过其对运动、信息流、疾病传播和种群遗传变异的影响，强烈影响种群的长期生存能力。因此，关于重新引入种群的社会行为的信息有助于保护实践；然而，它的重要性往往被低估。亚洲野驴 (Equus hemionus) 重新引入以色列的初始阶段被认为是成功的，目前估计种群数量超过 250 只。然而，目前人口的社会结构仍然未知。我们旨在研究这一重要的种群特征，并为有效的保护和管理协议提供有用的信息。该研究基于连续四年进行的直接观察，以及对群体构成和女性群体稳定性的分析。与男性相伴的雌性群体仅占 659 次观察结果的 5%，观察到雄性主要是独居或成群结队，而雌性则被组织成不稳定的群体，表明重新引入的种群表现出裂变融合社会结构体。在亚洲野驴不断扩大的内盖夫种群中确定该物种的社会结构有助于实施未来的重新引入，并有助于旨在保护该物种的有效管理决策。与男性相伴的雌性群体仅占 659 次观察结果的 5%，观察到雄性主要是独居或成群结队，而雌性则被组织成不稳定的群体，表明重新引入的种群表现出裂变融合社会结构体。在亚洲野驴不断扩大的内盖夫种群中确定该物种的社会结构有助于实施未来的重新引入，并有助于旨在保护该物种的有效管理决策。与男性相伴的雌性群体仅占 659 次观察结果的 5%，观察到雄性主要是独居或成群结队，而雌性则被组织成不稳定的群体，表明重新引入的种群表现出裂变融合社会结构体。在亚洲野驴不断扩大的内盖夫种群中确定该物种的社会结构有助于实施未来的重新引入，并有助于旨在保护该物种的有效管理决策。