Presence of the crab-eating fox Cerdocyon thous in La Rioja, Argentina, and implications for its geographic and environmental niche modeling

IF 0.8 4区生物学 Q3 ZOOLOGY Mammalia Pub Date : 2024-04-13 DOI:10.1515/mammalia-2023-0017

Thamara Fariñas Torres, Mauro Schiaffini, Sebastian Cirignoli, María Amelia Chemisquy

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Abstract

The crab-eating fox Cerdocyon thous is one of South America’s most common species of canids; its generalist habits and plasticity allowed the species to adapt to numerous habitats and human presence. In 2020, we registered a specimen of C. thous on a trap camera placed in the vicinity of the Huaco River in La Rioja Province, Argentina. This record was the starting point for evaluating past and present environmental niche models (ENMs) of the species throughout their entire distribution in South America. ENMs models suggest that the presence of C. thous in La Rioja has low suitability values and suggest that we may be facing a sink population scenario due to the low frequency of records in the province. Also, the model indicated that the parameters delimiting the areas with the highest suitability values are related to temperature, isothermality, and precipitation. Long-term studies in the region are needed to determine the population dynamics of C. thous in La Rioja.

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阿根廷拉里奥哈地区食蟹狐（Cerdocyon thous）的存在及其对地理和环境生态位建模的影响

食蟹狐（Cerdocyon thous）是南美洲最常见的犬科动物之一；它的通食习性和可塑性使其能够适应多种栖息地和人类的存在。2020 年，我们在阿根廷拉里奥哈省的华科河附近用陷阱相机记录了一只食蟹狐（Cerdocyon thous）的标本。这一记录是评估该物种在南美洲整个分布区过去和现在的环境生态位模型（ENMs）的起点。ENMs模型表明，C. thous在拉里奥哈的存在具有较低的适宜值，并且由于在该省的记录频率较低，我们可能面临种群沉没的情况。此外，该模型还表明，划定适宜值最高地区的参数与温度、等温线和降水量有关。需要对该地区进行长期研究，以确定拉里奥哈的千头椿种群动态。

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来源期刊

Mammalia 生物-动物学

CiteScore

2.20

自引率

10.00%

发文量

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.