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	Provedor de dados 48 (2) 97 (1) Autor Bozinovic,Francisco (1) HERNÁNDEZ,FELIPE (1) Inestrosa,Nibaldo C. (1) MENA,WILSON (1) OCAMPO-GARCÉS,ADRIÁN (1) PALACIOS,ADRIÁN G (1) Rivera,Daniela S. (1) SOTO- GAMBOA,MAURICIO (1) Mais... Palavra-chave Octodon degus (3) Aggressive behavior (1) Aging (1) Alzheimer's disease (1) Binding-proteins (1) Challenge hypothesis (1) Circadian rhythms (1) Cognitive ecology (1) Free testosterone (1) Globulin (1) Masking (1) Octodon bridgesi (1) Social behavior (1) Stress (1) Total testosterone (1) Wheel-running (1) Mais... Tipo do documento Journal article (3) Ano 2016 (1) 2005 (2) País Chile (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Free and total testosterone levels in field males of Octodon degus (Rodentia, Octodontidae): accuracy of the hormonal regulation of behavior 97 SOTO- GAMBOA,MAURICIO. Animals exhibit continuous seasonal changes in physiological, morphological and behavioral traits associated to their natural annual cycles. One of the most important changes in the organism occurs at the initiation of breeding season. In males these changes include activation of spermatogenesis, enhance of sexual secondary characters and an increase of aggressiveness. All of theses changes are basically regulated by testosterone, but the physiological basis of this testosterone regulation and the effective hormone proportion that acts in target tissues are unknown. In this work I evaluated the relationship between total testosterone, free testosterone associated to aggressive behavior in wild males of Octodon degus. I compared hormonal levels and... Tipo: Journal article Palavras-chave: Free testosterone; Total testosterone; Globulin; Binding-proteins; Aggressive behavior; Challenge hypothesis; Octodon degus. Ano: 2005 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2005000200006 Wheel-running and rest activity pattern interaction in two octodontids (Octodon degus, Octodon bridgesi) 48 OCAMPO-GARCÉS,ADRIÁN; HERNÁNDEZ,FELIPE; MENA,WILSON; PALACIOS,ADRIÁN G. Wheel-running and other non-photic stimuli influence the rest-activity pattern of diurnal and nocturnal mammals. A day to night inversion of phase preference of activity was described among Octodon degus, when exposed to ad-libitum wheel running. We have studied the rest-activity pattern response in presence of ad libitum wheel-running in wild-captured male individuals from two species of genus Octodon: O. degus (n=9, crepuscular-diurnal) and O. bridgesi (n=3, nocturnal). After two months of habituation to laboratory conditions, recordings were performed in isolation chambers under a 12:12 light-dark schedule with or without access to a running wheel. Actograms were constructed from data obtained by an automated acquisition system. O. bridgesi were also... Tipo: Journal article Palavras-chave: Circadian rhythms; Masking; Octodon degus; Octodon bridgesi; Wheel-running. Ano: 2005 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602005000200019 On cognitive ecology and the environmental factors that promote Alzheimer disease: lessons from Octodon degus (Rodentia: Octodontidae) 48 Rivera,Daniela S.; Inestrosa,Nibaldo C.; Bozinovic,Francisco. Cognitive ecologist posits that the more efficiently an animal uses information from the biotic and abiotic environment, the more adaptive are its cognitive abilities. Nevertheless, this approach does not test for natural neurodegenerative processes under field or experimental conditions, which may recover animals information processing and decision making and may explain, mechanistically, maladaptive behaviors. Here, we call for integrative approaches to explain the relationship between ultimate and proximate mechanisms behind social behavior. We highlight the importance of using the endemic caviomorph rodent Octodon degus as a valuable natural model for mechanistic studies of social behavior and to explain how physical environments can shape social... Tipo: Journal article Palavras-chave: Cognitive ecology; Octodon degus; Social behavior; Stress; Aging; Alzheimer's disease. Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602016000100010 Registros recuperados: 3 Primeira ... 1 ... Última

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