Browsing by Author "XX677253"
Now showing items 1-20 of 69
-
(SPRINGER, 2010-01-13)Glucocorticoids 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 ...
-
(The Linnean Society of London, 2013)The study of intraspecific variation of acoustic signals and its relationship with genetic divergence is important for understanding the origin of divergence in communication systems. We studied geographical variation in ...
-
(Elsevier, 2015)Rufous-collared sparrows (Zonotrichia capensis peruviensis) from valleys in the Atacama Desert of Chile, live in an extremely stable environment, and exhibit overlap in molt and reproduction, with valley-specific differences ...
-
Breeding biology of the Thorn-tailed Rayadito (Furnariidae) in south-temperate rainforests of Chile (COOPER ORNITHOLOGICAL SOC, 2005-02)We conducted a study of the breeding biology of the Thorn-tailed Rayadito (Aphrastura spinicauda) in secondary forests on the continental island of Chiloe (42degreesS), southern Chile. Rayaditos are small insectivorous ...
-
(Universidad de Chile, 2012)Intra-específicamente, e incluso dentro de un mismo sexo o clase de edad, se distingue variabilidad fenotípica entre los individuos de una población, la cual se expresa en diferencias morfológicas, fisiológicas y/o ...
-
(2014)In scatter-hoarding species, several behavioral and neuroanatomical adaptations allow them to store and retrieve thousands of food items per year. Nectarivorous animals face a similar scenario having to remember quality, ...
-
(Wilson Ornithological Society, 2014)© 2014 by the Wilson Ornithological Society.The simulated presence of conspecifics has been proposed to attract territorial songbirds to protect nesting areas when the habitat is being disturbed by human activities. We ...
-
(Elsevier Inc., 2004)Animals process and allocate energy at different seasons at variable rates, depending on their breeding season and changes in environmental conditions and resulting physiological demands. Overall total energy expenditure, ...
-
(Universidad de Chile, 2012)Quince ejemplares de pájaro Carpintero Gigante (Campephilus magellanicus) fueron capturados y examinados durante los meses de Octubre del 2010 a Febrero del 2011 en Isla Navarino, perteneciente a la Reserva de la Biosfera ...
-
(Universidad de Chile, 2008)El Monito del Monte (Dromiciops gliroides), marsupial endémico del bosque templado lluvioso de Sudamérica, es una de las especies de mamíferos menos conocidas de estos bosques australes. La marcada incertidumbre acerca de ...
-
(2020)To 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 ...
-
(Plos one, 2015)We evaluated the extent to which manipulation of early olfactory environment can influence social behaviours in the South American Hystricognath rodent Octodon degus. The early olfactory environment of newborn degus was ...
-
(Springer, 2012)Intraspecific variation in sociality is thought to reflect a trade-off between current fitness benefits and costs that emerge from individuals' decision to join or leave groups. Since those benefits and costs may be ...
-
(Universidad de Chile, 2009)Las actividades como el ecoturismo tienen el potencial de generar alteraciones en las conductas habituales de la fauna silvestre, por lo que averiguar cómo ella responde a la presencia humana, así como establecer zonas de ...
-
(Universidad de Chile, 2004)Estudios neurobiológicos han demostrado que la tasa de procesamiento de información por el cerebro es limitada respecto a la cantidad de información encontrada en el medio ambiente, y por lo tanto, para aquella información ...
-
(Universidad de Chile, 2010)Diversos animales adoptan distintas estrategias para mantener la comunicación acústica en ambientes ruidosos. Algunos animales incrementan su actividad, en tanto que otros la disminuyen en presencia de esta interferencia. ...
-
(Taylor & Francis, 2017)Environmental 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 ...
-
(Springer, 2007)Northern populations of the White-crowned Sparrow, Zonotrichia leucophrys, show varying degrees of social modulation of testosterone. In general, males of midlatitude breeding and multiple-brooded populations show transient ...
-
(Universidad de Chile, 2009)Los individuos que componen una población no son iguales entre sí. En etología, las diferencias en conjuntos de conductas se denominan síndromes conductuales, y se pueden definir como un conjunto de comportamientos que ...
-
(SOC BIOLOGIA CHILE, 2010-02-05)La Estación Biológica Senda Darwin (EBSD) constituye un centro de investigación inmerso en el paisaje rural del norte de la Isla de Chiloé (42º S), donde fragmentos del bosque siempreverde original coexisten con praderas ...
