Fonteyn D., Fayolle A., Orbell C., Malignat R., Cornelis D., Vanthomme H., Vigneron P., Vermeulen C. [2022] Range extension of the agile mangabey (Cercocebus agilis) and of the mandrill (Mandrillus sphinx) in eastern Gabon evidenced by camera traps. Afr J Ecol. 00:1–4 – DOI: 10.1111/aje.13061

Introduction :

The agile mangabey (Cercocebus agilis) is a medium-sized, omniv-orous Old World monkey from the large Cercopithecidae family that inhabits the dense humid tropical forests of central Africa. Although mainly arboreal, the species is often found on the ground in groups of highly variable size, from 10 to 50 individuals to over 200 individuals (Devreese et al., 2013; Quris, 1975). The geo-graphical distribution of the species is vast, ranging from west-ern Cameroon to the Central African Republic and north-eastern Democratic Republic of Congo, but its limits are unclear, particu-larly for its westernmost isolated populations (Maisels et al., 2020). In Gabon, the species is believed to …

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