Dieta De Lycalopex Griseus (Gray, 1837) (Mammalia: Canidae) en La Depresion Intermedia Del Sur De Chile

Zúñiga, Alfredo H.; Muñoz‐Pedreros, Andrés; Fierro, Andrés

doi:10.4067/s0717-65382008000100013

Cited by 20 publications

(30 citation statements)

References 2 publications

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“…), increasing the vulnerability of those prey that share the same microhabitat. It should be noted that the Colocolo opossum is the prey of native terrestrial carnivores such as the gray fox (Lycalopex griseus (Gray, 1837); Martínez et al, 1993;Rau et al, 1995;Zúñiga et al, 2008) 2007). They probably capture these marsupials scratching and exploring the fallen logs on the edge or inside the forest.…”

Section: Resultsmentioning

confidence: 99%

Philodryas chamissonis (Reptilia: Squamata: Colubridae) preys on the arboreal marsupial Dromiciops gliroides (Mammalia: Microbiotheria: Microbiotheriidae)

et al. 2013

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Philodryas chamissonis, the Chilean long-tailed snake, is a diurnal predator mainly of Liolaemus lizards, but also of amphibians, birds, rodents and juvenile rabbits. Dromiciops gliroides (Colocolo opossum) is an arboreal marsupial endemic of temperate rainforest of southern South America. Little information is available about this marsupial's biology and ecology. Here we report the predation of one Colocolo opossum by an adult female P. chamissonis in a mixed Nothofagus forest, composed mainly by N. dombeyi, N. glauca and N. alpina trees, in the "Huemules de Niblinto" National Reserve, Nevados de Chillán, Chile. Since these two species have different activity and habitat use patterns, we discuss how this encounter may have occurred. Although it could just have been an opportunistic event, this finding provides insights into the different components of food chains in forest ecosystems of Chile.Keywords: long-tailed snake, diet, monito del monte, predation, Chile.Philodryas chamissonis (Reptilia: Squamata: Dipsadidae) predando o marsupial arborícola Dromiciops gliroides (Mammalia: Microbiotheria: Microbiotheriidae) ResumoPhilodryas chamissonis, cobra de cauda comprida ("Culebra de cola larga"), é uma cobra diurna, predadora principalmente de lagartos do gênero Liolaemus, mas também de anfíbios, aves, roedores e coelhos jovens. Dromiciops gliroides (colocolo) é um marsupial arborícola endêmico das florestas temperadas do sul da América do Sul. Há pouca informação disponível sobre a biologia e a ecologia deste marsulpial. É reportada, neste estudo, a predação de um colocolo por uma fêmea adulta de P. chamissonis, em uma floresta mista de Nothofagus, composta principalmente por árvores N. dombeyi, N. glauca e N. alpina, na Reserva Nacional de Huemules de Niblinto, Nevados de Chillán, Chile. Uma vez que estas duas espécies possuem diferentes padrões de atividade e de uso de habitat, discute-se como este evento poder ter ocorrido. Embora este possa ter sido apenas um evento oportunístico, o achado fornece novas informações sobre os diferentes componentes da cadeia alimentar nos ecossistemas florestais do Chile.Palavras-chave: cobra, dieta, monito del monte, predação, Chile.

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Section: Resultsmentioning

confidence: 99%

Philodryas chamissonis (Reptilia: Squamata: Colubridae) preys on the arboreal marsupial Dromiciops gliroides (Mammalia: Microbiotheria: Microbiotheriidae)

et al. 2013

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“…It has an area of 435 ha, an average altitude of 376 m, being 62% of its area between 201 and 400 masl. The climate is temperate and humid, with an average annual temperature and rainfall of 1,400 mm and 12ºC, respectively (Zúñiga et al, 2008 (San Martín et al, 2008).…”

Section: Site Characteristicsmentioning

confidence: 99%

Biochemical Properties in Vascular Epiphytes Substrate From a Temperate Forest of Chile

Reyes

Zanetti

Espinosa

et al. 2010

R.C. Suelo Nutr. Veg.

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The temperate forests of south-central Chile belong to the association Lapageria aextoxiconetum Oberdorfer vegetation, dominated by Aextoxicon punctatum R. et P., elderly and multi-layered, where the strata are emergent, dominant and co-dominant, shrub and herbaceous epiphytes. This work is the first report of measurements of some biochemical properties in samples from vascular epiphytes substrate in temperate forests. We evaluated the most frequent ecological situations: bifurcated trees (BT), dead standing trees (SDT) and medium gap border trees (MGBT), ES were compared with the surrounding soil forest land (SS) as control. The microbial biomass and enzyme activities of substrate were higher in ES of BT, situation probably due to optimal micro-environmental conditions (moisture and humidity, temperature, organic matter (OM) content and nutrient availability); similarly, lower levels of activity were found in ES in MGBT situation. We found a statistically significant correlation (p ≤ 0.05) between evaluated microbial biomass and enzymatic activities. Furthermore, the biochemical properties were influenced by factors such as moisture, temperature, pH and OM content and all of these factors correlated significantly (P≤0.01) among them. These results demonstrate a difference between ES and SS in BT that should be explored to gain insights in understanding the processes of decomposition using the natural microcosms that ES provides.

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“…For birds, we used a mean weight (37.0 g, N = 90) for: (i) species with previous foraging records [e.g. Turdus falcklandii Quoy & Gaimard, 1824, Xolmis pyrope (Kittlitz, 1830) Zúñiga et al 2008]; and (ii) passerine birds frequent in the study area (CEA 2001). Weights were obtained from the Francisco Behn Bird Collection deposited in the Senckenberg Museum, Frankfurt, Germany (Norambuena & Riquelme 2014).…”

Section: Trophic Analysismentioning

confidence: 99%

“…Research into L. griseus diet has shown that the most important prey by biomass are mammals, followed by birds and invertebrates; it has been shown for the latter item that diversity and frequency vary with latitude (Yáñez & Jaksic 1978;Jaksic et al 1980Jaksic et al , 1983Jiménez 1993;Marquet et al 1993;Martínez et al 1993;Johnson & Franklin 1994;Rau et al 1995;Correa & Roa 2005;Zúñiga et al 2008). However, description of the prey available in the habitats studied is deficient, which prevents further studies on its dietary selectivity (ex-cept Martínez et al 1993;Rau et al 1995), its predatory response and its role in determining the abundance of prey (Jaksic 1989).…”

Section: Introductionmentioning

confidence: 99%

Diet, dietary selectivity and density of South American grey fox, Lycalopex griseus, in Central Chile

Muñoz‐Pedreros

Yáñez²,

Norambuena

et al. 2018

Integrative Zoology

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The South American grey fox Lycalopex griseus is a canid widely distributed in southern South America; however, some aspects of its biology are still poorly known. We studied the diet and density of L. griseus in the Lago Peñuelas Biosphere Reserve, in Central Chile. The trophic niche breadth was B = 6.16 (B sta = 0.47) and prey diversity was H′ = 2.46 (H max ′ = 3.17, J′ = 0.78). The highest proportions of prey consumed in the diet were Oryctolagus cuniculus (52.21%) and other mammals (32.78%). We compared these results with a latitudinal gradient of diet results for this species in Chile. L. griseus eats mostly mammals (>90% of total prey), consuming the rodent Phyllotis darwini and reptiles in the northern zone; Oryctolagus cuniculus, Octodon degus and Abrocoma bennetti in the central zone; Abrothrix spp. and lagomorphs in the southern zone; and Lepus capensis and Ovis aries in the austral zone. The estimated density of L. griseus in Lago Peñuelas NR was 1.3 foxes/km 2 .

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Dieta De Lycalopex Griseus (Gray, 1837) (Mammalia: Canidae) en La Depresion Intermedia Del Sur De Chile

Cited by 20 publications

References 2 publications

Philodryas chamissonis (Reptilia: Squamata: Colubridae) preys on the arboreal marsupial Dromiciops gliroides (Mammalia: Microbiotheria: Microbiotheriidae)

Philodryas chamissonis (Reptilia: Squamata: Colubridae) preys on the arboreal marsupial Dromiciops gliroides (Mammalia: Microbiotheria: Microbiotheriidae)

Biochemical Properties in Vascular Epiphytes Substrate From a Temperate Forest of Chile

Diet, dietary selectivity and density of South American grey fox, Lycalopex griseus, in Central Chile

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