Demographic population structure of black howler monkeys in fragmented and continuous forest in Chiapas, Mexico: Implications for conservation.,American Journal of Primatology

当前位置： X-MOL 学术 › Am. J. Primatol. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Demographic population structure of black howler monkeys in fragmented and continuous forest in Chiapas, Mexico: Implications for conservation.
American Journal of Primatology ( IF 2.0 ) Pub Date : 2020-06-30 , DOI: 10.1002/ajp.23163
Keren Klass ₁ , Sarie Van Belle ₂ , Alejandro Estrada ₃

Affiliation

For wild primates, demography studies are increasingly recognized as necessary for assessing the viability of vulnerable populations experiencing rapid environmental change. In particular, anthropogenic changes such as habitat loss and fragmentation can cause ecological and behavioral changes in small, isolated populations, which may, over time, alter population density and demographic structure (age/sex classes and group composition) in fragment populations relative to continuous forest populations. We compared our study population of Endangered black howler monkeys (Alouatta pigra ) in 34 forest fragments around Palenque National Park (PNP), Mexico (62 groups, 407 individuals), to the adjacent population in PNP, protected primary forest (21 groups, 134 individuals), and to previous research on black howlers in fragments in our study area (18 groups, 115 individuals). We used χ ² and Mann–Whitney U tests to address the questions: (a) what is the current black howler demographic population structure in unprotected forest fragments around PNP? (b) How does it compare to PNP's stable, continuous population? (c) How has it changed over time? Compared to the PNP population, the fragment populations showed higher density, a significantly lower proportion of multimale groups, and significantly fewer adult males per group. The population's age/sex structure in the fragmented landscape has been stable over the last 17 years, but differed in a higher proportion of multifemale groups, higher density, and higher patch occupancy in the present. In the context of conservation, some of our results may be positive as they indicate possible population growth over time. However, long‐term scarcity of adult males in fragments and associated effects on population demographic structure might be cause for concern, in that it may affect gene flow and genetic diversity. The scarcity of adult males might stem from males experiencing increased mortality while dispersing in the fragmented landscape, whereas females might be becoming more philopatric in fragments.

中文翻译：

墨西哥恰帕斯州零散而连续的森林中的黑how猴的人口结构：对保护的意义。

对于野生灵长类动物，人口学研究被越来越普遍地认为是评估经历快速环境变化的脆弱人群的生存能力的必要条件。尤其是，人为的变化（例如栖息地的丧失和破碎化）会导致小的孤立种群的生态和行为变化，随着时间的推移，相对于连续不断的变化，片断人口中的人口密度和人口结构（年龄/性别和群体组成）可能会发生变化森林人口。我们比较了濒临灭绝的黑吼猴（Alouatta pigra）的研究种群）在墨西哥帕伦克国家公园（PNP）周围的34个森林碎片中（62组，407个人），到PNP的邻近种群，受保护的原始森林（21组，134个人），以及之前对墨西哥黑how叫的研究我们的研究区域（18组，115个人）。我们使用χ ²和曼-惠特尼ü测试以解决以下问题：（a）PNP周围未受保护的森林片段中当前的黑吼人口结构是什么？（b）与PNP稳定，连续的人口相比如何？（c）它随着时间的变化如何？与PNP群体相比，这些片段群体显示出更高的密度，多男性群体的比例明显更低，每组的成年男性数量明显更少。在过去的17年中，零散景观中的人口年龄/性别结构一直稳定，但目前多女性群体的比例更高，密度更高和斑块占用率有所不同。在保护的背景下，我们的一些结果可能是积极的，因为它们表明随着时间的推移人口可能会增长。然而，成年男性的长期短缺及其对人口统计结构的影响可能令人担忧，因为这可能会影响基因流动和遗传多样性。成年雄性动物的稀缺性可能源于雄性在分散的景观中散布时死亡率增加，而雌性在片段中变得愈发透化。

更新日期：2020-07-24

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11