Consulta: creatorFacets:"Rosenmann,Mario"
Registros recuperados: 2
Data/hora: 03/06/2024 03:45:31

Water economy in rodents: evaporative water loss and metabolic water production
Provedor de dados: 97
Autores: Cortés,Arturo; Rosenmann,Mario; Bozinovic,Francisco.
Studies on water balance in desert-dwelling granivorous rodents use evaporative water loss (EWL) and metabolic water production (MWP) to evaluate the efficiency of water regulation, expressed by the model Ta @ MWP = EWL, defined by an ambient temperature (Ta) value at (@) which MWP/EWL = 1. Here we evaluate and apply this model (1 - r²) determining water regulation efficiency, based on the energetic cost (MR) to maintain water balance (WB), that is MR-WB. To test the model, EWL was measured and MWP estimated in nine species of rodents from different localities of northern and north-central Chile (II and IV Regions): Octodon degus (Od) and O. lunatus (Olu) (Octodontidae), Abrothrix olivaceus (Ao), A. longipilis (Al), A. andinus (Ad), Phyllotis darwini (Pd),...
Tipo: Journal article
Palavras-chave: Rodents; Water economy; Arid habitats; Chile.
Ano: 2000
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000200006

Energetics, thermoregulation and torpor in the Chilean mouse-opossum Thylamys elegans (Didelphidae)
Provedor de dados: 97
Autores: Bozinovic,Francisco; RuÍz,Gricelda; CortÉs,Arturo; Rosenmann,Mario.
In this paper we studied the energetic expenditure and thermoregulation of the Chilean mouse-opossum Thylamys elegans (Dielphidae) a nocturnal small marsupial, endemic of southern South America. We studied their standard energetic and determined whether they exhibit shallow daily torpor or deep prolonged torpor as a function of ambient temperature and food availability. Thylamys elegans partially supports the hypothesis that Neotropical marsupials have somewhat a higher basal metabolic rate (BMR) and thermal conductance (Cm) than Australian ones. In fact, BMR was higher but Cm was lower than expected for their body mass. The higher mass-independent BMR of the Chilean mouse-opossum may be explained by its insectivorous food habits and its low Cm by its...
Tipo: Journal article
Palavras-chave: Chile; Marsupials; Energetic; Thermoregulation; Facultative torpor.
Ano: 2005
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2005000200003