Blue-green eggshell coloration is not a sexually selected signal of female quality in an open-nesting polygynous passerine

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F11%3A00358873" target="_blank" >RIV/68081766:_____/11:00358873 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s00114-011-0790-3" target="_blank" >http://dx.doi.org/10.1007/s00114-011-0790-3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00114-011-0790-3" target="_blank" >10.1007/s00114-011-0790-3</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Blue-green eggshell coloration is not a sexually selected signal of female quality in an open-nesting polygynous passerine

Popis výsledku v původním jazyce

Here we tested two main assumptions of the sexually selected egg coloration hypothesis: (1) whether the intensity of eggshell blue-green chroma (BGC) reflects female quality; and (2) whether males make their decisions on the level of parental care according to the intensity of eggshell BGC. In the polygynous study species, the great reed warbler, females simultaneously paired with the same male, compete for his nest attendance and could benefit from signalling their quality through egg coloration. However, we found no association between the variation in eggshell BGC and measures of female quality. Moreover, males did not adjust their investment in nest defence in relation to the eggshell BGC. We conclude that blue-green egg coloration in this open-nesting passerine is unlikely to have a signalling function. Rather, the large colour variation among clutches of individual females may depend on yearly fluctuations in environmental conditions.

Název v anglickém jazyce

Blue-green eggshell coloration is not a sexually selected signal of female quality in an open-nesting polygynous passerine

Popis výsledku anglicky

Here we tested two main assumptions of the sexually selected egg coloration hypothesis: (1) whether the intensity of eggshell blue-green chroma (BGC) reflects female quality; and (2) whether males make their decisions on the level of parental care according to the intensity of eggshell BGC. In the polygynous study species, the great reed warbler, females simultaneously paired with the same male, compete for his nest attendance and could benefit from signalling their quality through egg coloration. However, we found no association between the variation in eggshell BGC and measures of female quality. Moreover, males did not adjust their investment in nest defence in relation to the eggshell BGC. We conclude that blue-green egg coloration in this open-nesting passerine is unlikely to have a signalling function. Rather, the large colour variation among clutches of individual females may depend on yearly fluctuations in environmental conditions.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EG - Zoologie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Naturwissenschaften

ISSN

0028-1042

e-ISSN

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Svazek periodika

98

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

7

Strana od-do

493-499

Kód UT WoS článku

000290689000003

EID výsledku v databázi Scopus

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