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Article
Jorge Garrido-Bautista, Auteur ; Gregorio Moreno-Rueda, Auteur ; Manuel Nunes, Auteur ; Jaime A. Ramos, Auteur ; Ana Claudia Norte, AuteurAvian growth has been traditionally examined using logistic, Gompertz or von Bertalanffy non-linear equations. Although many studies have analysed nestling mass increase and the factors affecting growth rates, there is little information on nest[...]
Article
M. Ángeles Hernández, Auteur ; M. Ángeles Rojo, Auteur ; Francisco Campos, Auteur ; Francisco Gutiérrez-Corchero, Auteur ; Gregorio Moreno-Rueda, AuteurWe report a new analysis of haemosporidian occurrence in 392 Southern Grey Shrike Lanius meridionalis nestlings previously reported in Hernández et al. (2017. Haemosporidian prevalence in Southern Grey Shrike Lanius meridionalis nestlings: impac[...]
Article
M. Ángeles Hernández, Auteur ; M. Ángeles Rojo, Auteur ; Francisco Campos, Auteur ; Francisco Gutiérrez-Corchero, Auteur ; Gregorio Moreno-Rueda, AuteurNestling Southern Grey Shrikes Lanius meridionalis show a high prevalence of haemosporidian parasites including five lineages described here for the first time.Aims: To examine the prevalence of various haemosporidian lineages in nestlings of th[...]
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Gregorio Moreno-Rueda, Auteur ; Francisco Campos, Auteur ; Francisco Gutiérrez-Corchero, Auteur ; María Ángeles Hernández, AuteurDespite major advances in sex ratio theory, how offspring sex should vary with hatching order remains unclear. We examine nestling sex ratio in the Southern Grey Shrike Lanius meridionalis according to hatching order and clutch size. Southern Gr[...]
Article
Gregorio Moreno-Rueda, Auteur ; Tomás Redondo, Auteur ; David Ochoa, Auteur ; Carlos Camacho, Auteur ; David Canal, Auteur ; Jaime Potti, AuteurParasitized nestlings might be expected to increase begging effort to obtain additional resources to compensate for those sequestered by their parasites. However, begging is costly and chicks harbouring parasites may find it more difficult to at[...]
Article
Gregorio Moreno-Rueda, AuteurThis study assesses whether uropygial gland size is related to improved feather quality. To address this question, I analysed the relationship between uropygial gland size and feather wear in the House Sparrow Passer domesticus. The results show[...]
Article
Parasites greatly impact host fitness. The immune system is fundamental to combat endoparasites, and survival increases with greater investment in immunity. Some ectoparasites, by contrast, are reportedly combated by the use of the uropygial gla[...]
Article
Gregorio Moreno-Rueda, Auteur ; Francisco Campos, Auteur ; Francisco Gutiérrez-Corchero, Auteur ; M.-Angeles Hernandez, AuteurSeveral non-mutually exclusive hypotheses predict adaptive variation in the offspring sex ratio. When conditions for breeding are adverse, parents are predicted to produce more offspring of the less costly sex to rear (the cost-of-reproduction h[...]
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Gregorio Moreno-Rueda, Auteur ; Jose M. Rivas, AuteurOrganisms are responding to recent climate warming by changing different aspects of their biology, including morphology. The present work examines the way in which dipper (Cinclus cinclus) morphology has varied over the past 20 years (1985-2005)[...]
Article
Gregorio Moreno-Rueda, Auteur ; Manuel Pizarro, Auteur
Article
Gregorio Moreno-Rueda, Auteur ; Manuel Pizarro, AuteurThis study explores the relationship between richness of bird species and climate in Spain, distinguishing groups of species according to biogeographic type. Species richness proved to be related to temperature but in a different way for each of[...]
Article
The uropygial gland is an organ exclusive of birds that secretes an oily substance, the uropygial secretion, the functions of which are still debated. One of the proposed hypothesis is its possible action against chewing lice (order Phthiraptera[...]
Article
Gregorio Moreno-Rueda, AuteurFeather holes represent damage to the plumage of birds and are correlated with delayed moult. Uropygial gland size is negatively correlated with feather holes. Consequently, it was predicted that birds with smaller uropygial glands would have mo[...]
