Nutritional ecology and digestive response to dietary shift in the large South American fox, <i>Pseudalopex culpaeus</i>

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dc.contributor.authorSilva, SI
dc.contributor.authorJaksic, FM
dc.contributor.authorBozinovic, F
dc.date.accessioned2025-01-21T01:06:57Z
dc.date.available2025-01-21T01:06:57Z
dc.date.issued2005
dc.description.abstractWe tested the role of dietary shifts (from rodents to fruits and to mixed diets) oil the nutritional ecology of the culpeo fox Psendalopex culpaeus, a native canid of South America. We studied the effects of food quality oil digestive processes. nutrition, and mass balance, and the implications of diet quality for fox Survival. We observed at the end of the nutritional trials that body mass differed significantly between the three diet groups (fruits, rats and mixed diets), while percentage of body mass change differed significantly only ill the fruit diet treatment. Foxes fed with fruits consumed more food to meet their dietary and metabolic needs. Across diets, dry-matter as well as energy digestibility increased significantly with diet quality. Also, mean retention time was negatively and significantly correlated with dry-matter intake. We put forth that mixed diet may yield higher assimilation efficiencies and hence higher nutrient intakes than those predicted from the ingestion and assimilation of pure diets (i.e,. only rats, only fruits). We hypothesize that during periods of low availability of mammalian prey, a mixed diet should yield a positive energy/mass balance for the fox. We Conclude that temporal and spatial variation in nutrient, energy, and water contents of prey available in a given habitat could have all important effect on fox nutrition, energy use, and mass balance. Finally, we postulate that P.culpaeus Could not survive on fruits only past seven days.
dc.fuente.origenWOS
dc.identifier.eissn0717-6317
dc.identifier.issn0716-078X
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/96249
dc.identifier.wosidWOS:000230118200007
dc.issue.numero2
dc.language.isoen
dc.pagina.final246
dc.pagina.inicio239
dc.revistaRevista chilena de historia natural
dc.rightsacceso restringido
dc.subjectnutritional bottleneck
dc.subjectfox
dc.subjectdietary shift
dc.subjectfruit consumption
dc.subject.ods15 Life on Land
dc.subject.ods14 Life Below Water
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.subject.odspa14 Vida submarina
dc.titleNutritional ecology and digestive response to dietary shift in the large South American fox, <i>Pseudalopex culpaeus</i>
dc.typeartículo
dc.volumen78
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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