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Documents disponibles écrits par cet auteur (10)
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Article
Sonia Ariznavarreta, Auteur ; Alba Martín del Campo, Auteur ; Vicente Garcia-Navas, AuteurSexual traits, such as visual adornments, sound-based cues and courtship dances, are frequently displayed in combination as multimodal signals. Some hypotheses propose that different signals trade-off with each other, potentially due to resource[...]
Article
Vicente Garcia-Navas, Auteur ; Esperanza S. Ferrer, Auteur ; Juan Jose Sanz, AuteurCapsule The effect of nestling age (7, 10 and 13 days old) on prey choice by Blue Tits Cyanistes caeruleus seems to be related to time constraints on food selectivity rather than chick gape-size limitations. Aims To study age differences in the [...]
Article
Vicente Garcia-Navas, Auteur ; Juan Jose Sanz, Auteur ; Santiago Merino, Auteur ; Josue Martinez-De La Puente, Auteur ; Elisa Lobato, Auteur ; Sara del Cerro, Auteur ; Juan Rivero, Auteur ; Rafael Ruiz de Castaneda, Auteur ; Juan Moreno, AuteurPrevious studies have found strong relationships between calcium availability and eggshell pigmentation in the Great Tit (Parus major). According to the "structural function hypothesis", protoporphyrins, the pigments responsible for reddish spot[...]
Article
Vicente Garcia-Navas, Auteur ; Juan Jose Sanz, AuteurA common feature of many birds breeding in seasonal environments is that fitness-related parameters such as nestling mass or survival decline as the breeding season progresses. Consequently, there is a tendency for early breeders to have better [...]
Article
Juan Jose Sanz, Auteur ; Vicente Garcia-Navas, Auteur ; Juan V. Ruiz-Peinado, AuteurCompared to coniferous forests, deciduous woodlands have often been considered a more suitable habitat for Blue and Great Tits. We compared reproductive parameters of both species in oak woodland and pine plantation patches within a Mediterranea[...]
Article
Vicente Garcia-Navas, Auteur ; Luis Arroyo, Auteur ; Juan José Sanz, Auteur ; Mario Diaz, AuteurAvian life-history studies are often conducted on populations nesting in nestboxes. However, the type of nestbox used is a potentially confounding variable, as each model shows specific characteristics. In recent decades, a new commercial model [...]
Article
Juan Jose Sanz, Auteur ; Vicente Garcia-Navas, AuteurWe test the consequences, in terms of breeding success and parental effort, of eggshell pigmentation pattern in a hole-nesting bird, the blue tit Cyanistes caeruleus that lays eggs asymmetrically speckled with reddish spots (maculated eggs). We [...]
Article
Vicente Garcia-Navas, Auteur ; Esperanza S. Ferrer, Auteur ; Eva Serrano-Davies, AuteurIn species with biparental care, males and females share the benefits of investing in offspring but pay the costs individually. As a result of these evolutionary conflicts of interest between the sexes, it is expected that the two parents should[...]
Article
Vicente Garcia-Navas, Auteur ; Timothee Bonnet, Auteur ; Dominique Waldvogel, Auteur ; Peter Wandeler, Auteur ; Glauco Camenisch, Auteur ; Erik Postma, AuteurGenetic monitoring has emerged as a useful tool to better understand evolutionary processes acting within and among natural populations. Longitudinal studies allow the examination of temporal changes in neutral genetic patterns in relation to de[...]
Article
Vicente Garcia-Navas, Auteur ; Juan Jose Sanz, AuteurOver a five-year period we monitored breeding parameters in a colony of Tree Sparrows Passer montanus in central Spain. This multi-brooded species can raise one to three broods per season. In this study, we analyzed inter-brood variation in repr[...]
