Octodon degus
On cognitive ecology and the environmental factors that promote Alzheimer disease: lessons from Octodon degus (Rodentia: Octodontidae)
... rodent Octodon degus as a valuable natural model for mechanistic studies of social behavior and to explain how physical environments can shape social experiences that might influ- ence impaired cognitive ...
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Early fitness consequences and hormonal correlates of parental behaviour in the social rodent, Octodon degus
... rodent, Octodon degus. We chose degus because several aspects of the reproductive biology and demography of these rodents indicate that a cost in terms of mating opportunities to male degus is ...
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Reproductive correlates of social network variation in plural breeding degus (Octodon degus)
... Studying the causes and reproductive consequences of social variation can provide insight into the evolutionary basis of sociality. Individuals are expected to behave adaptively to maximize reproductive success, but ...
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Distribución de acuaporinas en los pasajes nasales de Octodon degus, un roedor de ambientes desérticos sudamericanos: implicaciones en la conservación de agua
... Los roedores de ambientes áridos y semiáridos viven bajo una disponibilidad limitada de agua tanto espacial como temporal. Octodon degus es un roedor sudamericano que habita ambientes áridos y semiáridos ...
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Immunocompetence of breeding females is sensitive to cortisol levels but not to communal rearing in the degu (Octodon degus)
... One hypothesis largely examined in social insects is that cooperation in the context of breeding benefits individ- uals through decreasing the burden of immunocompetence and provide passive immunity through social con- ...
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Livetrapping is not biased by the endocrine stress response: a preliminary study in the degu (Octodon degus)
... roedor Octodon degus durante 12 días para determinar si los individuos con un perfil hormonal particular en respuesta a estrés por captura tienen una mayor probabilidad de ser ...en degus hembras y ...
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Pup Growth Rates and Breeding Female Weight Changes in Two Populations of Captive Bred Degus (Octodon degus), a Precocial Caviomorph Rodent
... (Octodon degus) is a diurnal, social caviomorph rodent native to the semi-arid scrublands of central ...Chile. Degus (both in the wild and in captivity) are seasonal breeders (Ebensperger et ...
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Habitat type influences endocrine stress response in the degu (Octodon degus)
... free-living degus (Octodon degus ...female degus from two sites and three habitats within one site during the mating/early gestation ...male degus across all habitats. Female ...
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Basal metabolism is correlated with habitat productivity among populations of degus (Octodon degus)
... productivity (NPP) and the de Martonne index (DMi) of aridity on mass-independent BMR among four populations of the caviomorph rodent Octodon degus along a geographic gradient in Chile. BMR was measured on ...
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Absence of kin structure in a population of the group living rodent Octodon degus
... rodent, Octodon degus, using a combination of direct (capture–mark–recapture) and indirect (codominat genetic markers) ...of degus indicated that social groups were characterized by high turnover ...
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Relatedness does not influence vigilance in a population of the social rodent Octodon degus
... rodent, Octodon degus and their pairwise relatedness (six microsatellite loci), under natural ...focal degus and their foraging partner did not influence the scan effort or the temporal distribution ...
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An experimental examination of the consequences of communal versus solitary breeding on maternal condition and the early postnatal growth and survival of degu, Octodon degus, pups
... The nesting condition to which females were assigned (solitary, singular, communal breeding) depended on the number of females that became pregnant previously. When two females became pregnant, they were assigned to ...
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Fecal cortisol levels predict breeding but not survival of females in the short lived rodent, Octodon degus
... The cort-adaptation hypothesis indicates that an association between glucocorticoid (cort) leve ls and fit- ness may vary with the extent to which reproduction or breeding effort is a major determinant of cort levels. ...
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Seasonal variation in the degu (Octodon degus) endocrine stress response
... Interestingly, degu body mass and stress-induced CORT pat- terns seem to mirror each other. For males, body mass and stress-induced CORT trends correspond exactly. For females, the same trends match well, although ...
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Octodon degus (Molina 1782): A model in comparative biology and biomedicine
... in degus as a model has expanded to the study of brain alterations that occur during aging and, in particular, the neurodegeneration that occurs in Alzheimer's disease ...that degus exhibit pathological ...
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Densidad Neuronal en la Corteza Visual Primaria (Área 17), en Dos Especies de Octodon
... especies Octodon degus (n=5) y Octodon bridgesi (n=3), pertenecientes a la Familia Octodontidae, con el propósito de evidenciar cambios a través de la medición de la densidad neuronal, mediante la ...
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Digestive and metabolic flexibility allows female degus to cope with lactation costs
... rodent Octodon degus ...todon degus (degu) is a small, diurnal, herbivorous rodent that feeds on grasses, forbs, seeds, and shrub foliage (Meserve 1981; Meserve et ...O. degus live in social ...
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Postsynaptic dysfunction is associated with spatial and object recognition memory loss in a natural model of Alzheimer's disease
... rodent Octodon degus naturally develops neuropathological signs of AD, such as accumulation of Aβ oligomers and phosphorylated tau ...O. degus as a suitable natural model for studying how sporadic AD ...
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Interplay between group size, huddling behavior and basal metabolism: an experimental approach in the social degu
... for Octodon degus (Molina 1782), a rodent that dwells in semi-arid areas of northern and central Chile, the huddling effectiveness [HE, the maximum energy saving during huddling (Canals et ...
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Selection and Implementation of a Flagship Fleet in a Locally Undervalued Region of High Endemicity
... (Octodon degus) and the culpeo fox (Lycalopex culpeaus), two birds, the turca (Pteroptochos megapoidius) and the burrowing owl (Ath- ene cunicularia), the Chilean iguana (Calopistes palluma), the tarantula ...
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