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Abstract:

Within a species, home-range size can vary due to intrinsic and extrinsic factors. In this study we test the hypotheses that social group sizes (intrinsic) of capybaras (Hydrochoerus hydrochaeris) and food availability in their habitat (extrinsic) affect their home-range sizes. We used the minimum convex polygon method to estimate home-range sizes and core areas (the area in which each group was present during all seasons). Home-range size estimates varied from 11.3 ha to 27.6 ha (X̄ = 19 ha ± 1.89 SE). Core area accounted for a mean 22.5% of the total home-range size. Home ranges measured during autumn and winter were significantly larger than those recorded in spring and summer. The correlation between home-range size and mean number of adults in groups was marginally significant, whereas that between home-range size and the overall average group size was not significant. We observed a significant negative linear correlation between home-range size and estimators of food availability. The evidence that we determined does not allow us to establish any relationship between group size and home-range size, but it lends support to the hypothesis that the abundance of food resources is a major limiting factor in determining home-range size. © 2013 American Society of Mammalogists.

Registro:

Documento: Artículo
Título:Influence of group sizes and food resources in home-range sizes of capybaras from Argentina
Autor:Corriale, M.J.; Muschetto, E.; Herrera, E.A.
Filiación:Grupo de Investigaciones en Ecología de Humedales, Departamento de Ecología, Genética y Evolución, Universidad de Buenos Aires, Argentina
Grupo de Estudios Sobre Biodiversidad en Agroecosistemas, Departamento de Biodiversidad y Biologia Experimental, Universidad de Buenos Aires, Buenos Aires, Argentina
Laboratoria de Ecología de Poblaciones, Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
Departamento de Estudios Ambientales, Universidad Simón Bolívar, Apartado 89000, Caracas 1080-A, Venezuela
Palabras clave:Argentina; capybara; group size; home range; Iberá wetlands; minimum convex polygon method; resources; correlation; food availability; group size; home range; hypothesis testing; limiting factor; numerical method; population distribution; rodent; Argentina; Corrientes; Ibera Wetlands
Año:2013
Volumen:94
Número:1
Página de inicio:19
Página de fin:28
DOI: http://dx.doi.org/10.1644/12-MAMM-A-030.1
Título revista:Journal of Mammalogy
Título revista abreviado:J. Mammal.
ISSN:00222372
CODEN:JOMAA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222372_v94_n1_p19_Corriale

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Citas:

---------- APA ----------
Corriale, M.J., Muschetto, E. & Herrera, E.A. (2013) . Influence of group sizes and food resources in home-range sizes of capybaras from Argentina. Journal of Mammalogy, 94(1), 19-28.
http://dx.doi.org/10.1644/12-MAMM-A-030.1
---------- CHICAGO ----------
Corriale, M.J., Muschetto, E., Herrera, E.A. "Influence of group sizes and food resources in home-range sizes of capybaras from Argentina" . Journal of Mammalogy 94, no. 1 (2013) : 19-28.
http://dx.doi.org/10.1644/12-MAMM-A-030.1
---------- MLA ----------
Corriale, M.J., Muschetto, E., Herrera, E.A. "Influence of group sizes and food resources in home-range sizes of capybaras from Argentina" . Journal of Mammalogy, vol. 94, no. 1, 2013, pp. 19-28.
http://dx.doi.org/10.1644/12-MAMM-A-030.1
---------- VANCOUVER ----------
Corriale, M.J., Muschetto, E., Herrera, E.A. Influence of group sizes and food resources in home-range sizes of capybaras from Argentina. J. Mammal. 2013;94(1):19-28.
http://dx.doi.org/10.1644/12-MAMM-A-030.1