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树栖相机陷阱揭示了食果-食肉类动物在新热带肉豆蔻树中频繁出现。

Arboreal camera trap reveals the frequent occurrence of a frugivore-carnivore in neotropical nutmeg trees.

机构信息

Département Adaptations du Vivant, Muséum National d'Histoire Naturelle, Mécanismes Adaptatifs et Evolution MECADEV - UMR 7179, CNRS-MNHN, Labex DRIIHM, 1 avenue du petit château, 91800, Brunoy, France.

Laboratoire d'Écologie Fonctionnelle et Environnement - UMR 5245, Université Toulouse III Paul Sabatier, 31062, Toulouse cedex 9, France.

出版信息

Sci Rep. 2022 May 7;12(1):7513. doi: 10.1038/s41598-022-11568-z.

Abstract

Arboreal and flying frugivorous animals represent primary dispersers in the Neotropics. Studies suggest a possible compensation for the loss of large species by smaller ones with expanding rampant anthropogenic pressures and declining populations of larger frugivores. However, studies on seed dispersal by frugivores vertebrates generally focus on the diurnal, terrestrial, canopy, and flying species, with the nocturnal canopy ones being less studied. Setting camera traps high in the canopy of fruiting nutmeg trees revealed for the first time the high frequency of the kinkajou (Potos flavus, Schreber, 1774, Procyonidae), an overlooked nocturnal frugivore species (Order Carnivora) in the Guianas. The diversity of the fruit species consumed by the kinkajou calls for considering it as an important seed disperser. The overlap of the size of seeds dispersed by frugivores observed in nutmeg trees suggests that the small (2-5 kg) kinkajou may compensate for the loss of large (5-10 kg) frugivorous vertebrates in the canopy. Camera traps visualise how the kinkajou is adapted to forage in the nutmeg tree crown and grab the fruit. Such information is vital for conservation because compensation of seed dispersal by small frugivores is crucial in increasing anthropogenic stressors.

摘要

树栖和飞行的果实食性动物是新热带地区的主要传播者。研究表明,在猖獗的人为压力和较大果实食性动物数量下降的情况下,较小的物种可能会对大型物种的损失进行补偿。然而,关于果实食性脊椎动物传播种子的研究通常集中在昼间、陆生、树冠和飞行物种上,而夜间树冠物种的研究较少。在结果的肉豆蔻树的树冠中设置高相机陷阱,首次揭示了蜜熊(Potos flavus,Schreber,1774,浣熊科)的高频率,这是一种在圭亚那被忽视的夜间果实食性物种(食肉目)。蜜熊消耗的果实种类的多样性要求将其视为重要的种子传播者。在肉豆蔻树上观察到的果实食性脊椎动物传播的种子大小的重叠表明,体型较小(2-5 公斤)的蜜熊可能会补偿树冠中体型较大(5-10 公斤)的果实食性脊椎动物的损失。相机陷阱可以直观地了解蜜熊如何适应在肉豆蔻树冠中觅食和抓取果实。这些信息对于保护至关重要,因为小型果实食性动物的种子传播补偿对于增加人为压力源至关重要。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/60b2/9079064/63359af0d3ff/41598_2022_11568_Fig1_HTML.jpg

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