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首页> 外文期刊>Primates >Genetic assessment of an isolated endemic Samango monkey (Cercopithecus albogularis labiatus) population in the Amathole Mountains, Eastern Cape Province, South Africa
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Genetic assessment of an isolated endemic Samango monkey (Cercopithecus albogularis labiatus) population in the Amathole Mountains, Eastern Cape Province, South Africa

机译：南非东开普省Amathole山脉孤立的特有杉木猴（Cercopithecusbogularis Labiatus）人口的遗传评估

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摘要

The endemic Samango monkey subspecies (Cercopithecus albogularis labiatus) inhabits small discontinuous Afromontane forest patches in the Eastern Cape, KwaZulu-Natal midlands and southern Mpumalanga Provinces in South Africa. The subspecies is affected by restricted migration between forest patches which may impact on gene flow resulting in inbreeding and possible localized extinction. Current consensus, based on habitat quality, is that C. a. labiatus can be considered as endangered as the small forest patches they inhabit may not be large enough to sustain them. The aim of this study was to conduct a molecular genetic investigation to determine if the observed isolation has affected the genetic variability of the subspecies. A total of 65 Samango monkeys (including juveniles, subadults and adults) were sampled from two localities within the Hogsback area in the Amathole Mountains. Nuclear and mitochondrial DNA variation was assessed using 17 microsatellite markers and by sequencing the hypervariable 1 region (HVR1). Microsatellite data generated was used to determine population structure, genetic diversity and the extent of inbreeding. Sequences of the HVR1 were used to infer individual origins, haplotype sharing and haplotype diversity. No negative genetic factors associated with isolation such as inbreeding were detected in the two groups and gene flow between groups can be regarded as fairly high primarily as a result of male migration. This was in contrast to the low nuclear genetic diversity observed (H (o) = 0.45). A further reduction in heterozygosity may lead to inbreeding and reduced offspring fitness. Translocations and establishment of habitat corridors between forest patches are some of the recommendations that have emerged from this study which will increase long-term population viability of the subspecies.
机译：特有的Samango猴子亚种（Cercopithecus bloogularis Labiatus）居住在南非的夸祖鲁 - 纳塔尔米德兰兹，夸祖鲁岛和南非南部南部南部的小型不连续的Afromontane森林补丁。亚种受到森林斑块之间的限制迁移的影响，这可能会影响基因流动导致近亲繁殖和可能的局部灭绝。目前基于栖息地质量的共识是C.A。 Labiatus可以被认为是濒危，因为他们居住的小森林补丁可能不会足够大以维持它们。本研究的目的是进行分子遗传调查，以确定观察到的分离是否影响了亚种的遗传变异。共有65名Samango猴子（包括青少年，亚域和成年人），从Amoplole Mountains的初级地区内的两个地方取样。使用17微卫星标记进行评估核和线粒体DNA变异，并通过测序高变1区（HVR1）。产生的微卫星数据用于确定人口结构，遗传多样性和近亲繁殖的程度。 HVR1的序列用于推断单个起源，单倍型共享和单倍型多样性。在两组中，没有检测到与近亲繁殖等分离相关的负遗传因子，并且由于雄性迁移，组之间的基因流动可以被视为相当高。这与观察到的低核遗传多样性相反（H（O）= 0.45）。进一步降低杂合性可能导致近脱烧和减少的后代健身。森林补丁之间栖息地走廊的搬移和建立是本研究中出现的一些建议，这将增加亚种类的长期人口存活率。

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