Abundance of Callicebus barbarabrownae (Hershkovitz 1990),(Primates: Pitheciidae) and other nonvolant mammals in a fragment of arboreal Caatinga in northeastern Brazil
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Evellyn Borges de Freitas
,
Crizanto Brito De-Carvalho
Abstract
The semi-arid Caatinga of the Brazilian northeast is a fragile, poorly known scrubland biome, which suffers increasing anthropogenic impacts. While 143 mammal species are known from the biome, few data are available on community composition or population parameters. In the present study, a 115-ha fragment of arboreal caatinga was surveyed in northern Sergipe in 2009 using standard line transect procedures. Total transect length was 133 km, and density estimates were calculated using sighting functions. Additional information on the occurrence of mammalian species was collected non-systematically. Nine species, including three carnivores, were confirmed in the study area, but only three were recorded in the surveys, two of which [the critically endangered blond titi, Callicebus barbarabrownae (Hershkovitz 1990), and the rock cavy, Kerodon rupestris (Wied-Neuwied 1820)] are endemic to the Caatinga. The third species was the common marmoset, Callithrix jacchus (Linnaeus 1758). C. jacchus and K. rupestris were relatively abundant, with estimated densities of 169.7 and 116.7 individuals per km2, respectively, but C. barbarabrownae was rare, and the local population was estimated to contain only five individuals, i.e., approximately four individuals per km2. If typical, densities this low would probably threaten the viability of C. barbarabrownae populations at most, if not all sites in which the species still occurs.
©2011 by Walter de Gruyter Berlin Boston
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- Abundance of Callicebus barbarabrownae (Hershkovitz 1990),(Primates: Pitheciidae) and other nonvolant mammals in a fragment of arboreal Caatinga in northeastern Brazil
- Medium to large-sized mammals in agricultural landscapes of south-eastern Brazil
- Distribution, population size and morphometrics of the giant-striped mongoose Galidictis grandidieri Wozencraft 1986 in the sub-arid zone of south-western Madagascar
- Selectivity of mammalian predator control in managed hunting areas: an example in a Mediterranean environment
- Short Notes
- Dense-sampling reveals a complex distributional pattern between the southernmost marsupials Lestodelphys and Thylamys in Patagonia, Argentina
- Occurrence of Marmosa waterhousei in the Venezuelan Andes, with comments on its biogeographic significance
- High elevation records of ocelots (Leopardus pardalis) in Jalisco, Mexico
- The influence of habitat structure on the European brown hare Lepus europaeus food habits in mountainous areas of northern Greece
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- Book Reviews
- Book reviews
Articles in the same Issue
- Original Studies
- A test of Allen’s rule in subterranean mammals: the genus Ctenomys (Caviomorpha, Ctenomyidae)
- Effect of seed availability on hoarding behaviors of Siberian chipmunk (Tamias sibiricus) in semi-natural enclosures
- Frugivory patterns and seed dispersal by golden-headed lion tamarins (Leontopithecus chrysomelas) in Una Biological Reserve, Bahia, Brazil
- Abundance of Callicebus barbarabrownae (Hershkovitz 1990),(Primates: Pitheciidae) and other nonvolant mammals in a fragment of arboreal Caatinga in northeastern Brazil
- Medium to large-sized mammals in agricultural landscapes of south-eastern Brazil
- Distribution, population size and morphometrics of the giant-striped mongoose Galidictis grandidieri Wozencraft 1986 in the sub-arid zone of south-western Madagascar
- Selectivity of mammalian predator control in managed hunting areas: an example in a Mediterranean environment
- Short Notes
- Dense-sampling reveals a complex distributional pattern between the southernmost marsupials Lestodelphys and Thylamys in Patagonia, Argentina
- Occurrence of Marmosa waterhousei in the Venezuelan Andes, with comments on its biogeographic significance
- High elevation records of ocelots (Leopardus pardalis) in Jalisco, Mexico
- The influence of habitat structure on the European brown hare Lepus europaeus food habits in mountainous areas of northern Greece
- Sites with reduced predation risk to young hares within an agricultural landscape
- Book Reviews
- Book reviews
