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Article
Rita Hargitai, Auteur ; Márton Herényi, Auteur ; Gergely Nagy, Auteur ; Zoltán Nyiri, Auteur ; Zsuzsanna Eke, Auteur ; János Török, AuteurAvian mothers can influence the fitness of their offspring by resource investment into the egg. Allocation of macro- and micronutrients into the eggs may be costly for the female, therefore, we expect that resource investment may be affected by [...]
Article
Rita Hargitai, Auteur ; Gergely Nagy, Auteur ; Márton Herényi, Auteur ; Janos Toeroek, AuteurMany bird species lay eggs speckled with protoporphyrin-based spots, however, for most of them the function of eggshell spotting is unknown. A plausible hypothesis is that protoporphyrin might have a structural function in strengthening the eggs[...]
Article
Beata Szigeti, Auteur ; János Török, Auteur ; Gergely Hegyi, Auteur ; Balazs Rosivall, Auteur ; Rita Hargitai, Auteur ; Eszter Szollosi, Auteur ; Gabor Michl, AuteurComponents of avian egg quality often show remarkable variation between females and yet the causes of variation in this fitness-related trait remain poorly understood. We investigated the egg size and yolk carotenoid investment of blue tit Parus[...]
Article
Rita Hargitai, Auteur ; Csaba Moskát, Auteur ; Miklós Bán, Auteur ; Diego Gil, Auteur ; Isabel Lopez-Rull, Auteur ; Emese Solymos, AuteurThe developmental rate of cuckoo embryos and their hatching size is greater than that of host species, which may require more nutrient resources in the egg and more intensive gas exchange during development. In the present study, we compared var[...]
Article
Rita Hargitai, Auteur ; Márton Herényi, Auteur ; János Török, AuteurThe blue-green eggshell pigment biliverdin is an efficient antioxidant, the deposition of which may be costly and act as a handicap to the female's antioxidant capacity. Thus, it is hypothesized that there exists a positive correlation between t[...]
Article
Rita Hargitai, Auteur ; Rafael Mateo, Auteur ; Janos Toeroek, AuteurAvian eggshell structure may have important consequences for embryonic growth and development, but relatively little is known about the factors responsible for variation in eggshell characteristics of wild birds. In this paper, we explored poten[...]
Article
Rita Hargitai, Auteur ; Gergely Hegyi, Auteur ; Janos Toeroek, AuteurWinter body condition may play important roles in the life history of migratory birds, but it is difficult to estimate. We used the growth rate of winter-grown tail feathers of Collared Flycatchers Ficedula albicollis as an indicator of winter b[...]
