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Article
R. Jovani, Auteur ; J. L. Tella, Auteur ; G. Blanco, Auteur ; M. Bertellotti, Auteur
Article
P. Bize, Auteur ; A. Roulin, Auteur ; J. L. Tella, Auteur ; L. F. Bersier, Auteur ; H. Richner, Auteur1. Parasitism is a non-negligible cost of reproduction in wild organisms, and hosts are selected to partition resources optimally between current and future reproduction. While parents can compensate for the cost of parasitism by increasing thei[...]
Article
G. Blanco, Auteur ; J. L. Tella, Auteur ; J. Potti, Auteur ; A. Baz, AuteurFeather mites (suborder Astigmata, superfamilies Analgoidea, Pterolichoidea and Freyaniidae) are among the commonest ectosymbionts of birds. Most researchers have assumed they are parasites, having negative effects on hosts. Here we present evid[...]
Article
D. Serrano, Auteur ; J. L. Tella, Auteur ; E. Ursua, AuteurHatching failure is a pervasive phenomenon in birds, but factors affecting hatchability remain poorly understood. We studied proximate causes and fitness consequences of hatching failure in a long-monitored population of the colonial lesser kest[...]
Article
J. J. Negro, Auteur ; J. L. Tella, Auteur ; F. Hiraldo, Auteur ; G. R. Bortolotti, Auteur ; P. Prieto, AuteurDans Ardea (89(2) 2001)We studied seasonal variation in plasma carotenoid levels of captive Red-legged Partridges Alectoris rufa in relation to sex, age and condition. The legs, bill and eye lores in this species are bright red due to carotenoid pigments. Carotenoid l[...]
Article
J. L. Tella, Auteur ; A. Rojas, Auteur ; M. Carrete, Auteur ; F. Hiraldo, AuteurThe IUCN Red List is challenged with assessing the conservation status of species on which reliable demographic and distribution parameters are lacking. The hotly debated SAFE index, however, measures the "species' ability to forestall extinctio[...]
