We report natural infections by pathogenic Leptospira of two rodent species endemic to Chile: the degu ( Octodon degus ) and Darwin's pericote ( Phyllotis darwini ). We detected Leptospira DNA in kidney and urine samples taken in different years and sites, reaching 33% infection. The effects of infection in these species requires further evaluation.
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http://dx.doi.org/10.7589/2016-11-248 | DOI Listing |
J Neurophysiol
February 2025
Department of Biology, University of Massachusetts-Amherst, Amherst, Massachusetts, United States.
Lab rodent species commonly used to study the visual system and its development (hamsters, rats, and mice) are crepuscular/nocturnal, altricial, and possess simpler visual systems than carnivores and primates. To widen the spectra of studied species, here we introduce an alternative model, the Chilean degu (). This diurnal, precocial Caviomorph rodent has a cone-enriched, well-structured retina, and well-developed central visual projections.
View Article and Find Full Text PDFEthology
August 2024
Department of Psychology, University of Montana, Missoula, Montana, USA.
Exp Anim
January 2025
Division of Bio-resources, Department of Biotechnology, Frontier Science Research Center, University of Miyazaki, Kihara 5200, Kiyotake, Miyazaki 889-1692, Japan.
Physiological responses to inhaled anesthetics vary among species. Therefore, a precise anesthetic technique is important for each individual species. In this study, we focused on the degu (Octodon degus), a small herbivorous rodent.
View Article and Find Full Text PDFiScience
August 2024
Institute of Ecology and Biodiversity, Department of Ecological Sciences, Faculty of Science, Universidad de Chile, Las Palmeras 3425, Santiago 7800003, Chile.
Gut microbiome dysbiosis is linked to many neurological disorders including Alzheimer's disease (AD). A major risk factor for AD is polymorphism in the apolipoprotein E () gene, which affects gut microbiome composition. To explore the gut-brain axis in AD, long-lived animal models of naturally developing AD-like pathologies are needed.
View Article and Find Full Text PDFHorm Behav
September 2024
Departamento de Ecología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Casilla 114-D, Santiago, Chile.
The timing of exposure to the steroid hormone, testosterone, produces activational and organizational effects in vertebrates. These activational and organizational effects are hypothesized to relate with the number of female mating partners and reproductive success in males. We tested this hypothesis by examining 151 wild degu (Octodon degus) males across a 10-year study.
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