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Article
Iván De la Hera, Auteur ; Javier Pérez-Tris, Auteur ; José Luis Tellería, AuteurThere is increasing evidence of adaptive preferential investment during moult in those feather tracts that are more advantageous for fitness. In this study, we assessed whether, after the manual removal of two functionally different flight feath[...]
Article
Iván De la Hera, Auteur ; Javier Pérez-Tris, Auteur ; José Luis Tellería, AuteurThere is increasing evidence of adaptive preferential investment during moult in those feather tracts that are more advantageous for fitness. In this study, we assessed whether, after the manual removal of two functionally different flight feath[...]
Article
Iván De la Hera, Auteur ; Javier Pérez-Tris, Auteur ; Jose Luis Telleria, AuteurThere is increasing evidence of adaptive preferential investment during moult in those feather tracts that are more advantageous for fitness. In this study, we assessed whether, after the manual removal of two functionally different flight feath[...]
Article
Michael A. J. Moens, Auteur ; Javier Pérez-Tris, Auteur ; Borja Mila, Auteur ; Laura Benitez, AuteurUnderstanding which factors promote disease emergence and transmission remains a major challenge of epidemiology. A problem with research on emerging diseases is that we seldom know to what extent pathogens circulate in natural populations befor[...]
Article
Rita Ventim, Auteur ; Paulo Tenreiro, Auteur ; Nuno Grade, Auteur ; Paulo Encarnacao, Auteur ; Miguel Araujo, Auteur ; Luisa Mendes, Auteur ; Javier Pérez-Tris, Auteur ; Jaime A. Ramos, AuteurThe prevalence and intensity of avian haemosporian infections (genera Haemoproteus and Plasmodium) were investigated using molecular techniques and microscopy in nine passerine species at three Portuguese reed beds along a small latitudinal grad[...]
Article
Iván De la Hera, Auteur ; Jose A. Diaz, Auteur ; Javier Pérez-Tris, Auteur ; José Luis Tellería, AuteurBirds moult to maintain plumage function through life, but the factors that determine moult duration are poorly understood. In temperate areas, variation in moult duration could be largely associated with between-species differences in migratory[...]
Article
Iván De la Hera, Auteur ; Javier Pérez-Tris, Auteur ; Jose Luis Telleria, AuteurIn migratory species, the way in which conspecifics from different breeding populations are distributed during the non-breeding period is important from and ecological, evolutionary and conservation perspective, but such knowledge is still limit[...]
Article
José Luis Tellería, Auteur ; Javier Pérez-Tris, AuteurIf resource availability shapes population distribution, changes in resource abundance should cause parallel changes in population numbers. However, tracking ability may be disrupted by different environmental and behavioural factors that act at[...]
Article
Tomas Santos, Auteur ; Roberto Carbonell, Auteur ; Aitor Galarza, Auteur ; Javier Pérez-Tris, Auteur ; Alvaro Ramirez, Auteur ; Jose Luis Telleria, AuteurMigratory birds are critically dependent on adequate wintering habitats for their long-term survival. Cantabrian farmland, a mixed agricultural landscape extending across the coastal lowlands of northern Spain, constitutes an important wintering[...]
Article
Rita Ventim, Auteur ; Luisa Mendes, Auteur ; Jaime A. Ramos, Auteur ; Helder Cardoso, Auteur ; Javier Pérez-Tris, AuteurWhen colonizing a new area, introduced species may lose their original haemoparasites. If the local parasites are unable to infect the novel introduced hosts, these may gain a fitness advantage over their local competitors. Alternatively, the in[...]
Article
Jose Luis Telleria, Auteur ; Maria Blazquez, Auteur ; Iván De la Hera, Auteur ; Javier Pérez-Tris, AuteurWhen different populations of the same bird species share non-breeding habitats, competition for food may promote resource partitioning. We studied food choice by resident and migratory Blackcaps Sylvia atricapilla in sympatric wintering grounds[...]
Article
Tomas Santos, Auteur ; Javier Pérez-Tris, Auteur ; Roberto Carbonell, Auteur ; Jose L. Telleria, Auteur ; Jose A. Diaz, AuteurEx situ conservation of animal populations may benefit from captive-breeding programmes, but these are criticised because they are assumed to be difficult, time-consuming and expensive, while they do not guarantee success. However, such assumpti[...]
Article
Iván De la Hera, Auteur ; Javier Pérez-Tris, Auteur ; José Luis Tellería, AuteurMoult is a costly but necessary process in avian life, which displays two main temporal patterns within the annual cycle of birds (summer and winter moult). Timing of moult can affect its duration and consequently the amount of material invested[...]
Article
Sara Pardal, Auteur ; José A. Alves, Auteur ; Libia Ze-Ze, Auteur ; Hugo Osorio, Auteur ; Afonso Rocha, Auteur ; Ricardo J. Lopes, Auteur ; Pete Potts, Auteur ; Fatima Amaro, Auteur ; Francisco Santiago-Quesada, Auteur ; Juan M. Sánchez-Guzmán, Auteur ; Jose Masero, Auteur ; Maria J. Alves, Auteur ; Javier Pérez-Tris, Auteur ; Jaime A. Ramos, Auteur ; Luisa Mendes, AuteurMigratory shorebirds are exposed to a wide range of pathogens along their migratory flyways, but their capacity to acquire or spread pathogens beyond endemic areas is poorly known. We focused on the spillover and acquisition of mosquito-borne pa[...]
Article
Iván De la Hera, Auteur ; Anders Hedenstroem, Auteur ; Javier Pérez-Tris, Auteur ; José Luis Tellería, AuteurMigration causes temporal and energetic constraints during plumage development, which can compromise feather structure and function. In turn, given the importance of a good quality of flight feathers in migratory movements, selection may have fa[...]
