Browsing by Author "Peña Villalobos, Isaac"
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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 ...