努瓦巴莱-恩多基国家公园腻鼻猴(Cercopithecus nictitans)异种群落的季节变化和群体规模效应

IF 1.3 4区 生物学 Q2 ZOOLOGY
Frédéric Gnepa Mehon, Daniel N’zoulou Kiminou, Claudia Stephan
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引用次数: 0

摘要

许多非人类灵长类动物都会结成异种群体,以增加群体生活带来的益处,如抵御掠食和提高觅食效率,同时避免通常由大型同种群体引起的代价高昂的资源竞争。以往的研究深入揭示了这些益处是如何获得的,以及结社会引起哪些行为变化。目前仍普遍未知的是,哪些因素可能导致结社模式的种内差异。例如,我们仍然普遍缺乏对群体大小和季节性如何影响一个物种内更多群体的异特异性关联的全面评估。本研究在刚果共和国的努瓦巴雷-恩多基国家公园对20多个腻鼻猴(Cercopithecus nictitans)群体进行了长达37个月的监测。在观察到的与尼基坦猴有联系的五种灵长类动物中,灰颊芒猴(Lophocebus albigena)和冠猴(C. pogonias)是最常遇到的联系伙伴。我们没有发现季节性对结伴率的影响。然而,在主要旱季,较大的尼氏猴群体与白冠猴和冠猴的联系要比较小的群体多得多。我们认为,我们的研究结果表明,在脆弱性增加的时期,包括 C. nictitans 在内的异种部队的反捕食优势会产生重大影响。我们讨论了有关联合模式变化的知识如何有助于调整保护策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Seasonal variation and group size effects in putty-nosed monkeys’ (Cercopithecus nictitans) heterospecific associations in the Nouabalé-Ndoki National Park

Seasonal variation and group size effects in putty-nosed monkeys’ (Cercopithecus nictitans) heterospecific associations in the Nouabalé-Ndoki National Park

Many non-human primates form heterospecific associations to increase benefits resulting from group living like antipredation defence and increased foraging efficiency while avoiding costly resource competition that usually arises from large conspecific groups. Previous studies provided profound insight into how these benefits are obtained and what behavioural changes might be elicited through association formation. What remains widely unknown are factors that could account for intra-specific variation in association patterns. For instance, we are still widely lacking a comprehensive assessment of how group size and seasonality affect heterospecific associations across larger number of groups within a species. The current study monitored more than 20 groups of putty-nosed monkeys (Cercopithecus nictitans), a forest guenon known to be frequently in association with other monkey species, for 37 months in the Nouabalé-Ndoki National Park, Republic of Congo. Amongst the five primate species observed in association with C. nictitans, grey-cheeked mangabeys (Lophocebus albigena) and crowned monkeys (C. pogonias) were the most frequently encountered association partners. We did not find any effect of seasonality on association rates. However, larger C. nictitans groups were substantially more in association with L. albigena and C. pogonias than smaller groups during the main dry season. We argue that our findings suggest a major impact of antipredation benefits of heterospecific troops including C. nictitans during periods of increased vulnerability. We discuss how knowledge about variations in association patterns may help to adjust conservation strategies.

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来源期刊
Primates
Primates 生物-动物学
CiteScore
3.10
自引率
17.60%
发文量
71
审稿时长
>12 weeks
期刊介绍: Primates is an international journal of primatology whose aim is to provide a forum for the elucidation of all aspects of primates. The oldest primatological journal, Primates publishes original papers that advance the scientific study of primates, and its scope embraces work in diverse fields covering biological bases of behavior, socio-ecology, learning and cognition, social processes, systematics, evolution, and medicine. Contributions relevant to conservation of natural populations and welfare of captive primates are welcome. Studies focusing on nonprimate species may be considered if their relevance to primatology is clear. Original Articles as well as Review Articles, News and Perspectives, and Book Reviews are included. All manuscripts received are initially screened for suitability by members of the Editorial Board, taking into account style and ethical issues, leading to a swift decision about whether to send the manuscript for external review.
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