Mostrando 10 resultados de: 62
Changes in Haemoproteus sex ratios: Fertility insurance or differential sex lifespan?
ArticleAbstract: There is little direct evidence of the fitness effects of changes in malaria gametocyte sex ratio. GPalabras claves:Gametocyte sex ratios, Haemoproteus majoris, Haemospororin parasites, Intensity of infection, Malaria parasites, Parus caeruleusAutores:Arriero E., Folgueira C., Merino S., Moreno J., Sanz J.J., Tomás Gutierrez, G.Fuentes:scopusClutch size and egg volume in great tits (Parus major) increase under low intensity electromagnetic fields: A long-term field study
ArticleAbstract: Exposure to electromagnetic fields (EMFs) can affect a wide range of biological processes, includingPalabras claves:Egg size, Environmental pollutants, parental investment, Power lines, Wild birdsAutores:Barba E., Martínez J., Merino S., Tomás Gutierrez, G.Fuentes:scopusCollection and analysis of blood samples to detect stress proteins in wild birds
ArticleAbstract: The blood stress protein response can be used to evaluate physiological or environmental stress in iPalabras claves:Blood sampling, centrifugation, freezing, Heat shock proteins, stress response, WESTERN BLOTAutores:Martínez J., Merino S., Tomás Gutierrez, G.Fuentes:scopusAssessing behavioral sex differences to chemical cues of predation risk while provisioning nestlings in a hole-nesting bird
ArticleAbstract: Birds can assess nest predation risk and adjust their parental activity accordingly. Risk taking behPalabras claves:Autores:Amo L., Saavedra I., Tomás Gutierrez, G.Fuentes:scopusAssociations between immune parameters, parasitism, and stress in breeding pied flycatcher (Ficedula hypoleuca) females
ArticleAbstract: There are two major interpretations of serum IgY concentration in wild birds. On the one hand, it haPalabras claves:Autores:Garamszegi L.Z., Juan Moreno, Martínez J., Merino S., Morales J., Moreno J., Tomás Gutierrez, G.Fuentes:googlescopusBacteria and the evolution of honest signals. The case of ornamental throat feathers in spotless starlings
ArticleAbstract: Mechanisms guaranteeing reliability of messages are essential in understanding the underlying informPalabras claves:Bacterial load, Feather-degrading bacteria, Ornaments, Sexual selection, Sturnus unicolor, uropygial glandAutores:Martín-Gálvez D., Ruiz-Castellano C., Ruiz-Rodríguez M., Soler J.J., Tomás Gutierrez, G.Fuentes:scopusBegging and ectoparasite attraction
ArticleAbstract: Honesty of offspring begging behaviours is the keystone to understanding the evolution of parent-offPalabras claves:Acoustic communication, Auditory cues, Begging costs, Ectoparasite attraction, Honest signalling, host location mechanisms, Interspecific eavesdropping, Nestling begging calls, Parent-offspring conflict, PhonotaxisAutores:Soler J.J., Tomás Gutierrez, G.Fuentes:rraaescopusAntimicrobial capacity is related to body colouration and reproductive success in female spotless starlings
ArticleAbstract: Pathogenic microorganisms select for a plethora of defensive mechanisms on their hosts. In males ofPalabras claves:animal communication, antimicrobial capacity, antimicrobial defences, innate humoral immunity, sexual selection in females, Sturnus unicolorAutores:Azcárate-García M., Díaz-Lora S., Pérez-Contreras T., Ruiz-Castellano C., Ruiz-Rodríguez M., Soler J.J., Tomás Gutierrez, G.Fuentes:scopusA trade-off between two resource-demanding functions: Post-nuptial moult and immunity during reproduction in male pied flycatchers
ArticleAbstract: 1. Costs of reproduction might be mediated by a resource-allocation trade-off between immunity and rPalabras claves:H/L ratio, HSP, immunity, Moult, Moult-breeding overlap, Pied FlycatcherAutores:Merino S., Moreno J., Sanz J.J., Tomás Gutierrez, G.Fuentes:scopusDeterminants of abundance and effects of blood-sucking flying insects in the nest of a hole-nesting bird
ArticleAbstract: Compared to non-flying nest-dwelling ectoparasites, the biology of most species of flying ectoparasiPalabras claves:Biting midges, black flies, Blood parasite-vector-vertebrate host relationship, Cyanistes caeruleus, Nest massAutores:Juan Moreno, Lobato E., Martínez-De La Puente J., Merino S., Morales J., Moreno J., Tomás Gutierrez, G.Fuentes:googlescopus