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Ecology and social organization of squirrel monkeys Saimiri spp specific characteristics or constraints of habitat? Ecologie et organisation sociale des singes-ecureuils Saimiri spp caracteristiques specifiques ou contraintes de lhabitat?


, : Ecology and social organization of squirrel monkeys Saimiri spp specific characteristics or constraints of habitat? Ecologie et organisation sociale des singes-ecureuils Saimiri spp caracteristiques specifiques ou contraintes de lhabitat?. Primatologie, 5: 275-287

Squirrel monkeys (Saimiri spp.) are small Platyrrhines widespread in Neotropical forests. Studies of taxonomy of the genus and phylogenetic relationships between clades are complex and still ongoing (see Lavergne et al., this volume). Because of a poor conservation status of the species in Central America (Rylands et al., 1997), ecoethological patterns of Saimiri oerstedii have been extensively studied. Conversely, the other species are much more common and are distributed over the Amazon area in various forest types including degraded areas, and are much less studied. According to an overview of available data, the main ecologic patterns including diet, habitat use, and role in primate community, are rather stable across species. Some differences in densities, home range sizes, are recorded, but are related to types of habitat, rather than to species. Alternatively, social organizations within squirrel monkeys troops are strongly diverse, with a matriarcal structure in Saimiri boliviensis, a patriarcal structure in S. sciureus, and an egalitarian organization in S. oerstedii. These differences are supported by high genetic variations between these 3 clades, and are explained by the patterns of distribution and phenology of some major key fruits species. A recent ecoethological fieldwork added further information. A S. sciureus population located in an isolated and heavily modified forest habitat was studied in French Guiana, and led to the conclusion that the social organization may split towards the most efficient system according to resources availability. Indeed, the vegetation patterns in this habitat were close to those described in the Peruvian forests, and the social organization of the groups were similar to that of S. boliviensis inhabiting these forests. Together with their small size, their generalist morphology, their non-specialized diet, their population dynamics, this plasticity of social organization has to be considered as a major component explaining the ecological success of the genus.


Accession: 038172483

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Related references

D.Thoisy, Benoit, 2002: Ecologie et organisation sociale des singes-ecureuils (Saimiri spp.): caracteristiques specifiques ou contraintes de l'habitat?. Squirrel monkeys (Saimiri spp.) are small Platyrrhines widespread in Neotropical forests. Studies of taxonomy of the genus and phylogenetic relationships between clades are complex and still ongoing (see Lavergne et al., this volume). Because of a...

Lavergne, A..; Lacote, S..; Catzeflis, F..; Mercereau-Puijalon, O..; Contamin, H.., 2002: Taxonomy and phylogenetic relationships of squirrel monkeys genus Saimiri in South America the role of mitochondrial cytochrome b gene Taxonomie et relations phylogenetiques des singes-ecureuils genre Saimiri en Amerique du Sud lapport du gene mitochondrial Cytochrome b. The squirrel monkey (genus Saimiri) is a Neotropical primate belonging to the Platyrrhines and to the Cebidae family. Its phylogenetic position among the Platyrrhines is still debated. The taxon Saimiri groups a complex of species and sub-species,...

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Pizza G.; Levine P.H.; Ablashi D.V.; Armstrong G.; Bengali Z.; Cannon G.B., 1982: Variations in the immune response to herpesvirus saimiri in squirrel monkeys saimiri sciureus and rhesus monkeys macaca mulatta. Humoral and cell-mediated immunity (CMI) to herpesvirus saimiri (HVS), an oncogenic lymphotropic herpesvirus, was studied in squirrel and rhesus monkeys. Natural antibody to HVS was found in 5 of 6 squirrel monkeys but there was no evidence of spe...

Scollay P.A.; Judge P., 1981: The dynamics of social organization in a population of squirrel monkeys saimiri sciureus in a semi natural environment. A population of about 200 squirrel monkeys (S. sciureus) living in a seminatural environment at the Monkey Jungle in Goulds, Florida [USA] were studied to determine the composition of the population and the basic pattern of its social structure. T...

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