The diet of the pampas fox (Lycalopex gymnocercus) in the province of Buenos Aires

Studies of carnivore diets provide essential information on ecosystem dynamics. The Pampas fox (Lycalopex gymnocercus) is an opportunistic carnivore. From the analysis of stomach content of 70 foxes we described the diet of L. gymnocercus and compared males and females in two rural areas in Buenos A...

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Autores principales: Canel, D., Scioscia, N.P., Denegri, G.M., Kittlein, Y.M.
Formato: JOUR
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Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03279383_v23_n2_p359_Canel
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spelling todo:paper_03279383_v23_n2_p359_Canel2023-10-03T15:25:04Z The diet of the pampas fox (Lycalopex gymnocercus) in the province of Buenos Aires Canel, D. Scioscia, N.P. Denegri, G.M. Kittlein, Y.M. Espinal Human activity Opportunism Pampas grassland Wild canids Studies of carnivore diets provide essential information on ecosystem dynamics. The Pampas fox (Lycalopex gymnocercus) is an opportunistic carnivore. From the analysis of stomach content of 70 foxes we described the diet of L. gymnocercus and compared males and females in two rural areas in Buenos Aires Province, one characterized by Espinal habitat (Villarino) and the other by Pampas grassland (Azul). Diet was described using the following indices: relative frequency, frequency of occurrence, biomass contribution and relative abundance. Sexes and locations were compared with indices of diversity and dietary overlap. Our results support the hypothesis of an opportunistic diet where murine rodents were the most frequent item, while the main biomass contribution corresponded to caviomorphs, lagomorphs and carrion. These results suggest that L. gymnocercus is well adapted to rural areas with high levels of disturbance. We recorded a high dietary overlap between males and females without significant differences in prey diversity. Finally, a greater dietary diversity was observed in the Espinal, but dietary overlap was high among foxes from both regions, suggesting incipient homogenization between ecoregions due to increased human activities in these environments. © SAREM, 2016. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03279383_v23_n2_p359_Canel
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Espinal
Human activity
Opportunism
Pampas grassland
Wild canids
spellingShingle Espinal
Human activity
Opportunism
Pampas grassland
Wild canids
Canel, D.
Scioscia, N.P.
Denegri, G.M.
Kittlein, Y.M.
The diet of the pampas fox (Lycalopex gymnocercus) in the province of Buenos Aires
topic_facet Espinal
Human activity
Opportunism
Pampas grassland
Wild canids
description Studies of carnivore diets provide essential information on ecosystem dynamics. The Pampas fox (Lycalopex gymnocercus) is an opportunistic carnivore. From the analysis of stomach content of 70 foxes we described the diet of L. gymnocercus and compared males and females in two rural areas in Buenos Aires Province, one characterized by Espinal habitat (Villarino) and the other by Pampas grassland (Azul). Diet was described using the following indices: relative frequency, frequency of occurrence, biomass contribution and relative abundance. Sexes and locations were compared with indices of diversity and dietary overlap. Our results support the hypothesis of an opportunistic diet where murine rodents were the most frequent item, while the main biomass contribution corresponded to caviomorphs, lagomorphs and carrion. These results suggest that L. gymnocercus is well adapted to rural areas with high levels of disturbance. We recorded a high dietary overlap between males and females without significant differences in prey diversity. Finally, a greater dietary diversity was observed in the Espinal, but dietary overlap was high among foxes from both regions, suggesting incipient homogenization between ecoregions due to increased human activities in these environments. © SAREM, 2016.
format JOUR
author Canel, D.
Scioscia, N.P.
Denegri, G.M.
Kittlein, Y.M.
author_facet Canel, D.
Scioscia, N.P.
Denegri, G.M.
Kittlein, Y.M.
author_sort Canel, D.
title The diet of the pampas fox (Lycalopex gymnocercus) in the province of Buenos Aires
title_short The diet of the pampas fox (Lycalopex gymnocercus) in the province of Buenos Aires
title_full The diet of the pampas fox (Lycalopex gymnocercus) in the province of Buenos Aires
title_fullStr The diet of the pampas fox (Lycalopex gymnocercus) in the province of Buenos Aires
title_full_unstemmed The diet of the pampas fox (Lycalopex gymnocercus) in the province of Buenos Aires
title_sort diet of the pampas fox (lycalopex gymnocercus) in the province of buenos aires
url http://hdl.handle.net/20.500.12110/paper_03279383_v23_n2_p359_Canel
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