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Article
Attila Fülöp, Auteur ; Gábor Á. Czirják, Auteur ; Péter L. Pap, Auteur ; Csongor I. Vágási, AuteurFeathers are dead integumentary structures that are prone to damage and thus show gradual degradation over the course of a year. This loss of quality might have negative fitness consequences. Feather-degrading bacteria are some of the most preva[...]
Article
Attila Fülöp, Auteur ; Csongor I. Vágási, Auteur ; Péter L. Pap, AuteurFeather-associated bacteria are widespread inhabitants of avian plumage. However, the determinants of the between-individual variation in plumage bacterial loads are less well understood. Infection intensities can be determined by ecological fac[...]
Article
Csongor I. Vágási, Auteur ; Péter L. Pap, Auteur ; Jacint Toekoelyi, Auteur ; Edina Szekely, Auteur ; Zoltán Barta, AuteurThe most important function of moult in birds is the renewal of deteriorated feathers. Worn and holey remiges may incur fitness costs, yet little is known about the factors responsible for the degree of feather wear and sources of variation in f[...]
Article
Ismael Galvan, Auteur ; Eduardo Aguilera, Auteur ; Francisco Atienzar, Auteur ; Emilio Barba, Auteur ; Guillermo Blanco, Auteur ; Jose L. Canto, Auteur ; Veronica Cortes, Auteur ; Oscar Frias, Auteur ; Istvan Kovacs, Auteur ; Leandro Melendez, Auteur ; Anders P. Moller, Auteur ; Juan S. Monrós, Auteur ; Péter L. Pap, Auteur ; Ruben Piculo, Auteur ; Juan C. Senar, Auteur ; David Serrano, Auteur ; José L. Tella, Auteur ; Csongor I. Vágási, Auteur ; Matthias Voegeli, Auteur ; Roger Jovani, AuteurFeather mites are arthropods that live on or in the feathers of birds, and are among the commonest avian ectosymbionts. However, the nature of the ecological interaction between feather mites and birds remains unclear, some studies reporting neg[...]
Article
Péter L. Pap, Auteur ; Zoltán Barta, Auteur ; Jacint Tokolyi, Auteur ; Csongor I. Vágási, AuteurHere we investigate the change in feather quality during partial post-juvenile and complete post-breeding moult in great tit Parus major by measuring the change in the number of fault bars and feather holes on wing and tail feathers. Feathers gr[...]
Article
Antagonistic processes between parasites and their hosts are hallmarks of evolutionary ecology. A group of parasites is adapted to feed on feather keratin. In doing so, they inflict a variety of costs on avian hosts by causing feathers to degrad[...]
Article
Péter L. Pap, Auteur ; Csongor I. Vágási, Auteur ; Gergely Osvath, Auteur ; Cosmin Muresan, Auteur ; Zoltán Barta, AuteurThe seasonal change, i.e. the marked differences between seasons of low and high productivity, in the abundance of ectosymbionts and the defence intensity of the host against pathogens is a well defined characteristic of temperate zone organisms[...]
Article
Péter L. Pap, Auteur ; Csongor I. Vágási, Auteur ; Jacint Tokolyi, Auteur ; Gábor Á. Czirják, Auteur ; Zoltán Barta, AuteurWe investigated seasonal variation in haematological indices and immune function in the non-migratory Great Tit Parus major over a complete annual cycle. The haematocrit value showed a marked reduction in spring and summer, reaching a lowest val[...]
