Abstract:We report new data on the intersexual and geographical variation in body mass of the Geoffroy's cat (Oncifelis geoffroyi d'Orbigny and Gervais 1844), a little known small cat from South America, and combine them with the existing information to compare alternative hypotheses for variation in body mass. Most data on the body mass of O. geoffroyi have been obtained from previous research on this felid in four study areas of southern Brazil and central and southern Argentina. These data were added to those report… Show more
“…That is, adult European hares (mean weight ¼ 3250 g) are too large to be captured by the relatively small Geoffroy's cats of LCNP (mean weight ¼ 3500 g, Pereira et al, 2006). This mean body weight is 30-53% less than the reported for Geoffroy's cats in Patagonia (4940 g) or the Pampas (5180À7400 g) (Lucherini et al, 2006). Large size of adult European hares could constrain Geoffroy's cats from preying on them, while large or medium-sized rodents may be more easily handled.…”
“…That is, adult European hares (mean weight ¼ 3250 g) are too large to be captured by the relatively small Geoffroy's cats of LCNP (mean weight ¼ 3500 g, Pereira et al, 2006). This mean body weight is 30-53% less than the reported for Geoffroy's cats in Patagonia (4940 g) or the Pampas (5180À7400 g) (Lucherini et al, 2006). Large size of adult European hares could constrain Geoffroy's cats from preying on them, while large or medium-sized rodents may be more easily handled.…”
“…These cats are noctunal and solitary (Diaz and Barquez 2002), and are good climbers (Cabrera and Yeppes 1960;Xime´nez 1973). The males are larger-bodied (Lucherini et al 2006) and have more extensive ranges than the females (Johnson and Franklin 1991).…”
The present study was carried out from 2001 to 2005, with the objective of analyzing the diet of Leopardus geoffroyi in extreme southern Brazil, through analyses of stomach contents and scats. The importance of each prey type found in the scats (n ¼ 66) was determined from the frequency of occurrence and percentage of occurrence. In the stomachs (n ¼ 9), the importance of each prey was determined using Pianka's index of relative importance (IRI). The food spectrum of L. geoffroyi included mammals, birds, serpents, amphibians and insects. Mammals were the most abundant items, present in 95.5% of the scats and representing 74.4% of the total prey, reaching an IRI of 13296.3 in the stomachs. The principal prey types found in the stomachs and scats were small rodents (Cavia spp., Oligoryzomys spp., Necromys spp. and Holochilus brasiliensis) and large-sized rodents (Myocastor coypus), of terrestrial, arboreal or semi-aquatic habit. Probably, the high percentage of these prey items in the diet is related to their availability and abundance. The index of niche breadth was low in both the stomach and scat analyses (respectively, B sta ¼ 0.18 and 0.17), demonstrating the high degree of specialization of these cats.
“…La distribución del gato montés incluye gran parte de Bolivia, el sur de Brasil, Argentina y Chile (Johnson y Franklin 1991;Lucherini et al 2006). Este carnívoro es principalmente nocturno y habita tanto en ambientes secos como semiáridos.…”
Section: Introductionunclassified
“…Es un predador oportunista y su dieta actual consiste en lagomorfos, pequeños roedores y aves (Ximénez 1975;Manfredi et al 2004Manfredi et al , 2011Perovic y Pereira 2006). El peso promedio del macho adulto es de alrededor de 4,9 kg, en tanto que las hembras pesan cerca de 4,2 kg (Cabrera y Yepes 1960;Johnson y Franklin 1991;Oliveira 1994;Lucherini et al 2006). La distribución del zorro pampeano es más restringida que la del gato montés.…”
RESUMENEl objetivo de este trabajo es caracterizar y comparar los patrones de modificaciones óseas producidos por dos carnívoros autóctonos de Sudamérica, el zorro pampeano y el gato montés, sobre partes esqueletarias de pequeños vertebrados. Para esto se realizó una experiencia en un parque zoológico local, ofreciendo 10 conejos en forma controlada, a cada uno de los predadores mencionados. En esta oportunidad se presentan los resultados de los restos no ingeridos, para los cuales se analizó la representación anatómica y los patrones de fractura. Los resultados indican que tanto el gato montés como el zorro pampeano generan una destrucción ósea significativa en los restos de conejo, lo cual impacta directamente en la representación de los individuos. Los elementos con mayor supervivencia fueron los huesos largos, la pelvis, el cráneo y la mandíbula. Por otra parte, la densidad ósea resultó ser uno de los factores que condicionó la destrucción diferencial de los elementos. Si bien nuestros resultados no permiten diferenciar las modificaciones generadas por estas dos especies de carnívoros, los patrones observados aportan nuevos datos que ayudan a distinguir estos conjuntos de aquellos originados por otros predadores como por ejemplo, aves rapaces diurnas y nocturnas.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.