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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F07%3A00004942" target="_blank" >RIV/61989592:15310/07:00004942 - isvavai.cz</a>

Result on the web

—

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

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

Original language description

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 ormay 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 for themselves asa powerful antioxidant. By this handicap, females may signal their quality to males, which are then hypothesized to increase their paternal effort. We experimentally tested the hypothesis in the collared flycatcher (Ficedula albicollis), a species laying blue-green eggs. We cross-fostered clutches between nests to disentangle effects of female/territory quality and egg colour on paternal effort and nestling quality. The results supported two assumptions of sexual signalling through egg

Czech name

Jsou modrá vejce sexuálně selektovaným znakem u samic lejska bělokrkého? Přesazovací experiment.

Czech description

Studie nepodpořila hypotézu podle níž by samice ptáků mohly svým partnerům signalizovat svou kvalitu fenotypem vejce a přimět je tak k větším rodičovským investicím.

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EG - Zoology

OECD FORD branch

—

Project

—

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2007

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Behavioral Ecology and Sociobiology

ISSN

0340-5443

e-ISSN

—

Volume of the periodical

61

Issue of the periodical within the volume

6

Country of publishing house

DE - GERMANY

Number of pages

14

Pages from-to

863-876

UT code for WoS article

—

EID of the result in the Scopus database

—