Browsing by Author "Peña Villalobos, Isaac"
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Peña Villalobos, Isaac; Casanova Maldonado, Ignacio J.; Lois, Pablo; Sabat Kirkwood, Alejandro Pablo; Palma, Verónica (Frontiers Media S.A., 2019)Copyright © 2019 Peña-Villalobos, Casanova-Maldonado, Lois, Sabat and Palma.Several studies have evaluated plastic changes in the morphology of the digestive tract in rodents subjected to caloric restriction or restricted ...
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Peña Villalobos, Isaac (Universisdad de Chile, 2017)Los organismos homeotermos, han desarrollado mecanismos fisiológicos que les permiten tolerar la privación al acceso del recurso y/o la restricción calorica durante diferentes ventanas temporales. En particular, diversas ...
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Peña Villalobos, Isaac; Olguín, Laura; Fibla López, Pablo; Castro, Victoria; Sallaberry Ayerza, Michel (Sociedad de Biología de Chile, 2013)Se identifi có y analizó la osteofauna aviar del sitio arqueológico Copaca 1, ubicado en el litoral árido de la segunda Región de Chile. La muestra estuvo compuesta por 685 fragmentos extraídos desde nueve capas con ...
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Peña Villalobos, Isaac; Piriz, Gabriela; Palma, Verónica; Sabat Kirkwood, Alejandro Pablo (Frontiers Media S.A., 2017)© 2017 Peña-Villalobos, Piriz, Palma and Sabat. Studies on the yolk and albumen content in bird eggs, and the effects of variations in their relative loads in the phenotype of the birds, have revealed multiple consequences ...
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Peña Villalobos, Isaac; Núñez Villegas, Mónica; Bozinovic, Francisco; Sabat Opazo, Pablo (Chinese Academy of Sciences, 2014)Due to the higher energy requirements of birds during winter, it is predicted that the activities of metabolic enzymes (e.g., citrate synthase, CS and cytochrome C oxidase, COX) should increase in tandem with increases in ...
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Peña Villalobos, Isaac; Valdés Ferranty, Fernanda; Sabat Kirkwood, Alejandro Pablo (Elsevier, 2013)Recent experiments on shorebirds have demonstrated that maintaining an active osmoregulatory machinery is energetically expensive. This may, in part, explain diet and habitat selection in birds with salt glands. However ...
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Peña Villalobos, Isaac (Universidad de Chile, 2013)Las aves son homeotermos endoternos, dado que son organismos que regulan su temperatura corporal a través de la producción de calor endógeno mediante el metabolismo aeróbico. Estos procesos de generación y regulación del ...