3 Works

Data from: Paternity covaries with laying and hatching order in the collared flycatcher Ficedula albicollis

Miloš Krist, Petr Nádvorník, Lenka Uvírová & Stanislav Bureš
Females in most bird species engage in extra-pair copulations. Although this behaviour is widespread, benefits for females of doing so are less understood. The most widely accepted hypothesis is that they improve their previous choice of social partner and gain genetic benefits for their offspring. Some evidence for this comes from studies that find that extra-pair young (EPY) have greater fitness than their half-sibs. However, this might be also caused by maternal, non-genetic effect, a...

Data from: Egg size and offspring performance in the collared flycatcher (Ficedula albicollis): a within-clutch approach

Miloš Krist, Vladimír Remeš, Lenka Uvírová, Petr Nádvorník & Stanislav Bureš
Adaptive within-clutch allocation of resources by laying females is an important focus of evolutionary studies. However, the critical assumption of these studies, namely that within-clutch egg-size deviations affect offspring performance, has been properly tested only rarely. In this study, we investigated effects of within-clutch deviations in egg size on nestling survival, weight, fledgling condition, structural size and offspring recruitment to the breeding population in the collared flycatcher (Ficedula albicollis). Besides egg-size effects, we also followed...

Data from: Are blue eggs a sexually selected signal of female collared flycatchers? A cross-fostering experiment

Miloš Krist & Tomáš Grim
Impressive variation in egg colouration among birds has puzzled evolutionary biologists for a long time. The most frequently studied selective forces moulding egg colouration – predation and brood parasitism – have either received little empirical support or may play a role in only a minority of species. A novel hypothesis has suggested that egg colour may be significantly influenced by sexual selection. Females may deposit a blue-green pigment biliverdin into eggshells instead of using it...

Registration Year

  • 2010
    3

Resource Types

  • Dataset
    3

Affiliations

  • Palacký University, Olomouc
    3