Food habits of two syntopic canids, the maned wolf (Chrysocyon brachyurus) and the crab-eating fox (Cerdocyon thous), in southeastern Brazil

The maned wolf (Chrysocyon brachyurus) and the crab-eating fox (Cerdocyon thous) are two South American canids with large overlap in their geographic distribution. However, there are few data on the comparative ecology of these species. The aim of this research was to quantify the diet of these two...

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Autores principales:	ARRUDA BUENO,ADRIANA DE, MOTTA-JUNIOR,JOSÉ CARLOS
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2004
Materias:	Chrysocyon brachyurus Cerdocyon thous Brazil diet yntopy
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2004000100002
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spelling	oai:scielo:S0716-078X20040001000022004-06-11Food habits of two syntopic canids, the maned wolf (Chrysocyon brachyurus) and the crab-eating fox (Cerdocyon thous), in southeastern BrazilARRUDA BUENO,ADRIANA DEMOTTA-JUNIOR,JOSÉ CARLOS Chrysocyon brachyurus Cerdocyon thous Brazil diet yntopy The maned wolf (Chrysocyon brachyurus) and the crab-eating fox (Cerdocyon thous) are two South American canids with large overlap in their geographic distribution. However, there are few data on the comparative ecology of these species. The aim of this research was to quantify the diet of these two canids living in syntopy at three levels: frequency of occurrence, minimum number of individuals preyed and estimated biomass ingested. Additionally, seasonality in the consumption of major groups of food items and aspects of prey size distribution were assessed. The study took place in the Experimental Station of Itapetininga, São Paulo State, Brazil. General results showed that both canids are omnivorous in accordance with other studies. By occurrences, the wolves consumed vegetal and animal food in similar proportions, whereas the foxes consumed more animals, mainly insects. In contrast, both canids ingested mainly animal food if biomass is considered. The maned wolf consumed more wolf's fruit (Solanum lycocarpum) and small mammals in the dry season, and miscellaneous fruits during the wet season. The crab-eating fox also ingested more miscellaneous fruits in the wet season, but the insects were mostly consumed during dry months. The crab-eating fox is more generalist than the maned wolf, but the wolf seems better able to handle distinct prey types. The distribution of prey sizes suggested separate food niches: while the maned wolf consumed a larger spectrum of prey sizes, especially small vertebrates between 10.1 and 100.0 g, the crab-eating fox consumed smaller prey, mainly insects between 0.01 and 0.1 ginfo:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.77 n.1 20042004-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2004000100002en10.4067/S0716-078X2004000100002
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Chrysocyon brachyurus Cerdocyon thous Brazil diet yntopy
spellingShingle	Chrysocyon brachyurus Cerdocyon thous Brazil diet yntopy ARRUDA BUENO,ADRIANA DE MOTTA-JUNIOR,JOSÉ CARLOS Food habits of two syntopic canids, the maned wolf (Chrysocyon brachyurus) and the crab-eating fox (Cerdocyon thous), in southeastern Brazil
description	The maned wolf (Chrysocyon brachyurus) and the crab-eating fox (Cerdocyon thous) are two South American canids with large overlap in their geographic distribution. However, there are few data on the comparative ecology of these species. The aim of this research was to quantify the diet of these two canids living in syntopy at three levels: frequency of occurrence, minimum number of individuals preyed and estimated biomass ingested. Additionally, seasonality in the consumption of major groups of food items and aspects of prey size distribution were assessed. The study took place in the Experimental Station of Itapetininga, São Paulo State, Brazil. General results showed that both canids are omnivorous in accordance with other studies. By occurrences, the wolves consumed vegetal and animal food in similar proportions, whereas the foxes consumed more animals, mainly insects. In contrast, both canids ingested mainly animal food if biomass is considered. The maned wolf consumed more wolf's fruit (Solanum lycocarpum) and small mammals in the dry season, and miscellaneous fruits during the wet season. The crab-eating fox also ingested more miscellaneous fruits in the wet season, but the insects were mostly consumed during dry months. The crab-eating fox is more generalist than the maned wolf, but the wolf seems better able to handle distinct prey types. The distribution of prey sizes suggested separate food niches: while the maned wolf consumed a larger spectrum of prey sizes, especially small vertebrates between 10.1 and 100.0 g, the crab-eating fox consumed smaller prey, mainly insects between 0.01 and 0.1 g
author	ARRUDA BUENO,ADRIANA DE MOTTA-JUNIOR,JOSÉ CARLOS
author_facet	ARRUDA BUENO,ADRIANA DE MOTTA-JUNIOR,JOSÉ CARLOS
author_sort	ARRUDA BUENO,ADRIANA DE
title	Food habits of two syntopic canids, the maned wolf (Chrysocyon brachyurus) and the crab-eating fox (Cerdocyon thous), in southeastern Brazil
title_short	Food habits of two syntopic canids, the maned wolf (Chrysocyon brachyurus) and the crab-eating fox (Cerdocyon thous), in southeastern Brazil
title_full	Food habits of two syntopic canids, the maned wolf (Chrysocyon brachyurus) and the crab-eating fox (Cerdocyon thous), in southeastern Brazil
title_fullStr	Food habits of two syntopic canids, the maned wolf (Chrysocyon brachyurus) and the crab-eating fox (Cerdocyon thous), in southeastern Brazil
title_full_unstemmed	Food habits of two syntopic canids, the maned wolf (Chrysocyon brachyurus) and the crab-eating fox (Cerdocyon thous), in southeastern Brazil
title_sort	food habits of two syntopic canids, the maned wolf (chrysocyon brachyurus) and the crab-eating fox (cerdocyon thous), in southeastern brazil
publisher	Sociedad de Biología de Chile
publishDate	2004
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2004000100002
work_keys_str_mv	AT arrudabuenoadrianade foodhabitsoftwosyntopiccanidsthemanedwolfchrysocyonbrachyurusandthecrabeatingfoxcerdocyonthousinsoutheasternbrazil AT mottajuniorjosecarlos foodhabitsoftwosyntopiccanidsthemanedwolfchrysocyonbrachyurusandthecrabeatingfoxcerdocyonthousinsoutheasternbrazil
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Food habits of two syntopic canids, the maned wolf (Chrysocyon brachyurus) and the crab-eating fox (Cerdocyon thous), in southeastern Brazil

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