My postgraduate work with Dr. Emma Chiaraviglio at the Ferreyra Institute concerned the neural control of thirst and salt appetite. This work provided electrophysiological evidence that the brain has osmo-sodium sensors outside the hypothalamus in cells of the Organum Vasculosum of the Lamina Terminalis telencephalon. This nucleus is one of the specialized neural structures called circumventricular organs and it initiates the appropriate behavioral responses to losses of body water and sodium.

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We'd like to understand how you use our websites in order to improve them. Register your interest. Akodon azarae J. Fischer, is a small omnivorous murid rodent that lives in environments with seasonal fluctuations of food.

Seasonal variation in its body composition and gut length, in relation to reproductive status, was studied. Physical Condition Index PCI and body composition showed seasonal differences, however, there were no differences in intestine length. The PCI was higher for both mature males and reproductive females compared to immature males and non-reproductive females. Lipid, protein and ash content showed differences in relation to reproductive status.

The results suggest that A. This is a preview of subscription content, log in to check access. Rent this article via DeepDyve. Antinuchi C. Google Scholar. Reproductive energetics and thermoregulatory status of nestlings in pampa mice Akodon azarae Rodentia: Sigmodontinae.

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Physiological ecology of foraging and digestion in vertebrates: models and theories. Revista Chilena de Historia Natural — Nutritional ecophysiology of andean mouse Abrothrix andinus : energy requirements, food quality and turnover time.

Comparative Biochemistry and Physiology A — Seasonal changes in energy expediture and digestive tract of Abrothrix andinus Cricetidae in the Andes Range. Physiological Zoology — Feeding and digesting fiber and tannins by an herbivorous rodent, Octodon degus Rodentia: Caviomorpha. Cabrera A. Las comunidades vegetales de las dunas costaneras de la Provincia de Buenos Aires. Campell K. Seasonal changes in gut mass, forage digestibility, and nutrient selection of wild muskrats Ondatra zibethicus.

Carey C. Regulation of gut structure and function in hibernators. Ecological, physiological, and molecular mechanisms. Carey, G. Florant, B. Wunder and B. Horwitz, eds]. Castle K. Limits to food intake and fiber utilization in the prairie vole, Microtus ochrogaster : effects of food quality and energy needs. Journal of Comparative Physiology B — Caviedes-Vidal E. Dietary modulation of intestinal enzymes of the house sparrow Passer domesticus : testing an adaptive hypothesis.

Comparative Biochemistry and Physiology A 11— Derting T. Responses of the gut to moderate energy demands in a small herbivore Microtus pennsylvanicus. Journal of Mammalogy 59— Seasonal changes in gut capacity in the white-footed mouse Peromyscus leucopus and meadow vole Microtus pennsylvanicus. Dobush G. The effect of apparatus, extraction time, and solvent type on lipid extractions of snow geese. Fedyk A. Gross body composition in postnatal development of the bank vole.

Differentiation of seasonal generations. Acta Theriologica — Estimating age. Gross J. Effects of food quality and energy needs: changes in gut morphology and capacity of Microtus ochrogaster.

Hammond K. An experimental test for a ceiling on sustained metabolic rate in lactating mice. The role of diet quality and energy need nutritional ecology of a small herbivore Microtus ochrogaster. Karasov W.

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Davies, eds]. Blackwell Scientific Publications, Oxford: — Millar J. An annual lipid cycle in a montane population of Peromyscus maniculatus. Mutze G. Fat cycles, breeding and population changes in house mice.

Australian Journal of Zoology — Olsson G. Demographic factors associated with hantavirus infection in bank voles Clethrionomys glareolus. Emerging Infectious Diseases 8: — Pearson O.

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Test of the adaptive modulation hypothesis in rodents: dietary flexibility and enzyme plasticity. Comparative Biochemistry and Physiology A 83— Dietary flexibility and intestinal plasticity in birds: a field and laboratory study. Sawicka-Kapusta K.



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Balance hidrosalino de un poligono de riego en los llanos de La Violada (Huesca)




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