title: Is diet flexibility an adaptive life trait for relictual and peri-urban populations of the endangered primate Macaca sylvanus?
abstract: Habitat loss, fragmentation and urban expansion may drive some species to marginal habitats while others succeed in exploiting urban areas. Species that show dietary flexibility are more able to take advantage of human activities to supplement their diet with anthropogenically abundant and accessible resources. The Barbary macaque (Macaca sylvanus) is an endangered species due to the loss of its habitat, and human pressure. The population of Gouraya National Park (Algeria) lives in a relictual habitat that constitutes about 0.6% of the species range. In addition, this population is a unique case where urban expansion favours contact zones between Barbary macaque habitats and a big city (Bejaia). We quantified the dietary composition of Gouraya macaques over an annual cycle with the objective to understand how diet flexibility of this species may help it adapt to a relictual habitat or cope with urban expansion. We recorded the phenology of plant species every month. This study shows that Gouraya macaques, compared to those living in other forest types of the distribution area, are under lower seasonal constraints. They consume a greater amount of fruit and seeds that are available throughout much of the year, and a lesser amount of costly to find and extract subterranean foods. Therefore the Gouraya relictual habitat appears as a favourable environment compared to other major habitats of that species. This study also shows that colonizing peri-urban zones increases the availability and species richness of diet resources for Barbary macaques as they consume more human foods and exotic plants than in farther sites. Adult males eat more human foods than adult females and immatures do. The exploitation of high-energy anthropogenic food could favour macaque population growth and expansion towards the city center associated with human/macaque conflicts. We recommend applying management actions to restore macaques back to their natural habitat.
authors.affiliation: Laboratory of Ecology and Environment, Faculty of Natural Sciences and Life, University Abderahmane Mira, Bejaia, Algeria.
authors.forename: Yasmina
authors.initials: Y
authors.lastname: Maibeche
authors.affiliation: Laboratory of Ecology and Environment, Faculty of Natural Sciences and Life, University Abderahmane Mira, Bejaia, Algeria.
authors.forename: Aissa
authors.initials: A
authors.lastname: Moali
authors.affiliation: Laboratory of vegetal ecology, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene, Alger, Algeria.
authors.forename: Nassima
authors.initials: N
authors.lastname: Yahi
authors.affiliation: UMR 6553, laboratoire "Ecosystems, Biodiversity, Evolution", Centre National de la Recherche Scientifique/University of Rennes 1, Station Biologique de Paimpont, Paimpont, France.
authors.forename: Nelly
authors.initials: N
authors.lastname: Menard
mesh_terms: D000222:Adaptation, Physiological; D000462:Algeria; D000821:Animal Feed; D000818:Animals; D001522:Behavior, Animal; D005260:Female; D005843:Geography; D008251:Macaca; D008297:Male; D019655:Quantitative Trait, Heritable; D014505:Urban Population