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Documents disponibles écrits par cet auteur (19)
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Article
Elfego Cuevas, Auteur ; Carolina Orellana-Peñailillo, Auteur ; Esteban Botero-Delgadillo, Auteur ; Pamela Espíndola-Hernández, Auteur ; Rodrigo A. Vásquez, Auteur ; Veronica Quirici, AuteurLife-history theory predicts that hosts may adjust the costs of parasites by altering their reproductive effort. Haemosporidian parasites can affect the reproductive output of wild birds in multiple ways. Thorn-tailed Rayaditos Aphrastura spinic[...]
Article
Yanina Poblete, Auteur ; Esteban Botero-Delgadillo, Auteur ; Pamela Espíndola-Hernández, Auteur ; Rodrigo A. Vásquez, AuteurWithin-population variation in timing of breeding may be linked to a trade-off between the risks and benefits of breeding earlier. This trade-off may be mediated by individual risk-taking behaviour, but this needs to be assessed in detail in wil[...]
Article
Yanina Poblete, Auteur ; Victor Gutierrez, Auteur ; Paulina L. Gonzalez-Gomez, Auteur ; John C. Wingfield, Auteur ; Rodrigo A. Vásquez, AuteurTo facilitate breeding and any energetically costly activity, individuals of the same species can substantially vary their circulating corticosterone (CORT) levels to cope with local environmental conditions at different elevations. We compared [...]
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Aaron D. Clark, Auteur ; Elizabeth A. Addis, Auteur ; Rodrigo A. Vásquez, Auteur ; John C. Wingfield, AuteurTo persist in a landscape, organisms are often faced with evolutionary tradeoffs between individual survival and reproduction. In environments where breeding opportunities are brief, it has been hypothesized that individuals will decrease invest[...]
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Esteban Botero-Delgadillo, Auteur ; Daniela Serrano, Auteur ; Nicole Orellana, Auteur ; Yanina Poblete, Auteur ; Rodrigo A. Vásquez, AuteurEnvironmental adjustment is the most invoked explanation for intra-seasonal variation in bird nest morphology. However, time constraints may also be important, coming as a trade-off between the costs of nest building and the requirement to coinc[...]
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Javier Martínez, Auteur ; Rodrigo A. Vásquez, Auteur ; Alberto Marqués, Auteur ; Alazne Díez-Fernández, Auteur ; Santiago Merino, AuteurBlood parasites exert significant selective pressure, which can alter population dynamics, and the introduction of new parasite lineages in a region could lead to the extinction of endemic avian species that have not coevolved with them. The avi[...]
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Gerardo E. Soto, Auteur ; Pablo M. Vergara, Auteur ; Ashley Smiley, Auteur ; Marlene E. Lizama, Auteur ; Darío Moreira-Arce, Auteur ; Rodrigo A. Vásquez, AuteurABSTRACT Agonistic behavior in woodpeckers has been described for a wide range of species, although previous studies have not reported aggressive encounters resulting in the death of adults. In this study, we provide the first evidence of lethal[...]
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Esteban Botero-Delgadillo, Auteur ; Rodrigo A. Vásquez, AuteurABSTRACT We present descriptions of nest architecture, clutch size, nestling growth and nestling attendance for the Fire-eyed Diucon (Xolmis pyrope), based on nests found at the Fray Jorge National Park, Chile, at the northernmost part of its di[...]
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Esteban Botero-Delgadillo, Auteur ; Yanina Poblete, Auteur ; Rodrigo A. Vásquez, AuteurABSTRACT Interspecific competition among secondary cavity nesters can involve physical conflicts between individuals, which may lead to serious injuries or death. Here we report a case of aggression by a pair of Chilean Swallows (Tachycineta mey[...]
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Javier Martínez, Auteur ; Rodrigo A. Vásquez, Auteur ; Cristobal Venegas, Auteur ; Santiago Merino, AuteurThe Juan Fernandez Firecrown Sephanoides fernandensis and Juan Fernandez Tit-Tyrant Anairetes fernandezianus are two endemic forest birds inhabiting Robinson Crusoe Island and are classified as 'Critically Endangered' and 'Near Threatened' respe[...]
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Elisa Lobato, Auteur ; Juan Moreno, Auteur ; Santiago Merino, Auteur ; Judith Morales, Auteur ; Gustavo Tomás, Auteur ; Javier Martínez, Auteur ; Rodrigo A. Vásquez, Auteur ; Alexandra Kuchar, Auteur ; Erich Moestl, Auteur ; Jose Luis Osorno, AuteurGlucocorticoids promote the mobilization of energy stores and they may facilitate the expression of energetically expensive functions. Early arrival on the breeding grounds in migratory species and territorial competition are energetically deman[...]
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Claudio S. Quilodrán, Auteur ; Cristián F. Estades, Auteur ; Rodrigo A. Vásquez, Auteur
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John C. Wingfield, Auteur ; Simone L. Meddle, Auteur ; Ignacio Moore, Auteur ; Shallin Busch, Auteur ; Douglas Wacker, Auteur ; Sharon Lynn, Auteur ; Aaron Clark, Auteur ; Rodrigo A. Vásquez, Auteur ; Elizabeth Addis, AuteurNorthern populations of the White-crowned Sparrow, Zonotrichia leucophrys, show varying degrees of social modulation of testosterone. In general, males of mid-latitude breeding and multiple-brooded populations show transient increases in secreti[...]
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Jose L. Osorno, Auteur ; Judith Morales, Auteur ; Juan Moreno, Auteur ; Santiago Merino, Auteur ; Gustavo Tomás, Auteur ; Rodrigo A. Vásquez, AuteurWe present evidence of differential maternal allocation to eggs in response to manipulated male attractiveness in the migratory pied flycatcher (Ficedula hypoleuca). We manipulated the size of a male secondary sexual trait, the white forehead pa[...]
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Silvina Ippi, Auteur ; Rodrigo A. Vásquez, Auteur ; Wouter F. D. van Dongen, Auteur ; Ilenia Lazzoni, AuteurStructural variation in acoustic signals may be related either to the factors affecting sound production such as bird morphology, or to vocal adaptations to improve sound transmission in different environments. Thus, variation in acoustic signal[...]
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Diego I. Yanez, Auteur ; Veronica Quirici, Auteur ; Gabriel J. Castano-Villa, Auteur ; Elie Poulin, Auteur ; Rodrigo A. Vásquez, AuteurEight novel microsatellites were isolated and characterised in the thorn-tailed rayadito Aphrastura spinicauda in order to evaluate genetic diversity in three contrasting populations, two of them at the boundaries of the geographic range of the [...]
Article
Claudio S. Quilodrán, Auteur ; Rodrigo A. Vásquez, Auteur ; Cristián F. Estades, Auteur
Article
Esteban Botero-Delgadillo, Auteur ; Yanina Poblete, Auteur ; Rodrigo A. Vásquez, Auteur
Article
Wouter F. D. van Dongen, Auteur ; Rodrigo A. Vásquez, Auteur ; Hans Winkler, AuteurInterspecies hybridisation frequently occurs when the distributional ranges of two closely-related species overlap after a period of geographic isolation. From a conservation perspective, such hybridisation events can incur detrimental effects o[...]
