Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"Degus"”.
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Experimental trichinosis in Octodon degus (Rodentia)
Octodon degus occurs abundantly in an endemic trichinosis area of Chile. However, Trichinella spiralis, the etiologic agent for trichinosis has not been reported as a natural or laboratory parasite of O. degus. In this study, degus were found to be susceptible to doses of T. spiralis as low as 20 …
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Social organization during mating, but not offspring care, influences the reproductive success of male degus, Octodon degus
… reproductive success in the common degu (Octodon degus), a caviomorph rodent endemic to Chile. Male social organization was variable across years and seasons. The best fit model for male reproductive success included autumn-winter social organization unit type, year, spring group ID, and …
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Mechanisms driving social structure in Octodon degus
… shaping social network structure in Octodon degus, a diurnal, semi-fossorial rodent endemic to Chile. Using data collected over three seasons (2022–2023), we tested the roles of nighttime spatial proximity, female social cohesion, and female homophily based on masculinization (anogenital …
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Habitat-specific fitness benefits of sociality in Octodon degus
… two years, I studied two populations of Octodon degus, a plurally breeding rodent, to answer three questions: (1) Does living in large groups and having strong social network strength improve access to resources in harsh environments? (2) Does increased access to resources improve the …
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Cronobiología del sueño de movimientos oculares rápidos en Octodon degus
El Octodon degus ha sido descrito como un animal de actividad diurna en su medio natural. En condiciones de laboratorio, presenta un perfil predominantemente crepuscular en su ritmo de actividad-reposo. Se ha descrito la existencia de múltiples cronotipos en esta especie, con individuos que …
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Do females counter against costly males in the degu, Octodon degus?
… offspring. We studied the common degu (Octodon degus), a plurally breeding rodent endemic to Chile, to evaluate (i) whether males negatively influence female reproduction, (ii) if cohesive female social relationships counter the influence of costly males, and (iii) whether females reproductively …
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Kin and social network structure in two populations of Octodon degus
… Here I investigate two populations of Octodon degus, a South American rodent which has been shown to form kin and non-kin groups. I quantified genetic relatedness within social groups in two populations as well as social network parameters (association, strength, and clustering coefficient) in …
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Restricciones dietarias y digestivas sobre la tasa metabólica basal en un herbívoro pequeño, Octodon degus (Rodentia: octodontidae)
… modelo al roedor caviomorfo herbívoro (octodon degus)
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Consequences of the environment: timing of litter parturition and offspring survival in the social rodent Octodon degus
… dataset on a natural, free-living population of degus (Octodon degus), a social rodent endemic to Chile, to test predictions that ecological, social, and maternal conditions during the breeding season are associated with the timing of litter parturition and intragroup litter synchrony and that …
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Does personality affect competition, social organization, and fitness? a study using a small social mammal, Octodon degus
… animals. I studied the common degu (Octodon degus), a social and group-living rodent, to evaluate whether three personality traits (aggression, boldness, and activity level) play a role in shaping competitive interactions and composition of social groups, and whether these interactions …
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SYSTEMIC ALTERATIONS AND BRAIN CHANGES IN PHYSIOLOGY AND PATHOLOGY. THE OCTODON DEGUS AS A MODEL OF AGING AND MULTIMORBIDITY
… alla patologia. Negli ultimi anni, l'Octodon degus (O. degus) è stato proposto come modello importante per la ricerca biomedica. A differenza dei roditori tradizionali, l’O. degus è diurno e presenta svariate caratteristiche biologiche simili all'uomo, compreso lo sviluppo di alcuni tratti …
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Harsh and variable ecological conditions modulate the relationship between social structure and direct fitness in a plurally breeding small mammal
… fitness in the plurally breeding rodent, Octodon degus. As predicted, increased social structure was most beneficial when food abundance was more variable, mean monthly rainfall was highest, predator abundance was more variable, soil hardness was more variable, and ectoparasitic flea intensity was …
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Unified Mathematical Modeling, Analysis and Simulation of COVID-19 and Ecological Processes
… specifically examining the group dynamics of degus, small rodents with complex social behaviors. We analyze how environmental factors such as temperature variations, seasonal rainfall patterns, and vegetation indices (NDVI) influence group sizes and social interactions over time. This …
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The effects of parental experience on cognition, anxiety-like behaviour, and hippocampal plasticity in a biparental species.
… in both sexes of the same species, the degu. Degus are biparental rodents allowing us to examine maternal and paternal experiences in addition to maternal experience in single mothers when the male partner is removed (i.e., monoparental maternal experience). Key findings from our study …