Department of Environmental Biology and Wildlife Sciences, Cotton University, Guwahati, India.
J Biosci. 2021;46.
Very large and stable, socially coherent primate groups, not including fission-fusion societies, are usually rare in nature, owing to constraints imposed by various ecological and social factors. Moreover, unlike species in open habitats, those in forests tend to have smaller groups, and this becomes further accentuated in small and fragmented forest patches. We report here an unusually large troop of stump-tailed macaques from the Hollongapar Gibbon Sanctuary, a small and isolated lowland tropical rainforest patch in the Upper Brahmaputra Valley of northeastern India - this is possibly the largest wild group of the species recorded anywhere across its distribution range. We hypothesise the potential factors driving the formation of such a large social group of this vulnerable cercopithecine primate and discuss the conservation implications of this phenomenon.
非常大且稳定、社会凝聚力强的灵长类群体，不包括裂变融合社会，由于各种生态和社会因素的限制，在自然界中通常很少见。此外，与开阔栖息地的物种不同，那些生活在森林中的物种往往群体较小，而在小而碎片化的森林斑块中，这种情况更加明显。我们在这里报告了一个来自霍隆帕加比昂保护区的异常大的长尾猕猴群体，该保护区是印度东北部上布拉马普特拉河谷的一个小而孤立的低地热带雨林斑块 - 这可能是该物种在其分布范围内记录到的最大野生群体。我们假设了形成这种脆弱的猕猴类大社会群体的潜在因素，并讨论了这一现象的保护意义。
