First report of a leucistic Brown Agouti (Dasyprocta variegata) in Bolivia

IF 0.8 4区 生物学 Q3 ZOOLOGY Mammalia Pub Date : 2024-08-29 DOI:10.1515/mammalia-2024-0101
Jente Ottenburghs, Edward Smits, Mark van Leeuwen, Tjalle Boorsma, Luz Natalia Mercado Callaú, Miguel Martinez Diaz, Peter van der Sleen
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Abstract

Cases of anomalous coloration are regularly reported in Neotropical mammals, including the rodent family Dasyproctidae (agoutis and acouchis) where leucistic and albino individuals have been observed. Here, we document the first case of leucism in the Brown Agouti (Dasyprocta variegata) in Bolivia. During a camera trap survey of the Barba Azul Nature Reserve, we obtained footage of a Brown Agouti with a completely white body. Additional pictures of this individual revealed that it has black eyes, indicating leucism instead of albinism. Previous observations (since 2017) of a white agouti in the area suggest that these anomalously colored individuals can survive in the wild. Rare observations of top predators suggest a relatively low predation pressure in the area. We had only one record of a South-American Puma (Puma concolor) during our camera trap survey. Hence, leucistic individuals of a common prey species might also be indicative of the dwindling population densities of top predators in the region.
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玻利维亚首次报告白化褐阿古提(Dasyprocta variegata)的情况
在新热带地区的哺乳动物中,包括啮齿类 Dasyproctidae(褐箭蚁科和褐箭蚁科)在内,经常有关于色斑异常的报道,在这些动物中,人们观察到了白化和白化个体。在这里,我们记录了玻利维亚第一例褐马鸡(Dasyprocta variegata)的白化现象。在对巴尔巴阿苏尔自然保护区(Barba Azul Nature Reserve)进行相机陷阱调查时,我们拍摄到了一只全身全白的褐马鸡。对这只个体的补充照片显示,它的眼睛是黑色的,表明它是白化病而非白化病。之前(自 2017 年以来)在该地区观察到的一只白色褐马鸡表明,这些颜色异常的个体可以在野外生存。对顶级捕食者的罕见观察表明,该地区的捕食压力相对较小。在我们的相机陷阱调查中,只发现了一只南美美洲狮(Puma concolor)。因此,常见猎物物种的白化个体也可能表明该地区顶级掠食者的数量正在减少。
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来源期刊
Mammalia
Mammalia 生物-动物学
CiteScore
2.20
自引率
10.00%
发文量
68
审稿时长
6-12 weeks
期刊介绍: Mammalia is an international, multidisciplinary, bimonthly journal devoted to the inventory, analysis and interpretation of mammalian diversity. It publishes original results on all aspects of the systematics and biology of mammals with a strong focus on ecology, including biodiversity analyses, distribution habitats, diet, predator-prey relationships, competition, community analyses and conservation of mammals. The journal also accepts submissions on sub-fossil or recently extinct mammals.
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