Počet záznamů: 1  

Do weather conditions affect the colouration of great reed warbler Acrocephalus arundinaceus eggs?

  1. 1.
    0383654 - ÚBO 2013 RIV CZ eng J - Článek v odborném periodiku
    Honza, Marcel - Procházka, Petr - Požgayová, Milica
    Do weather conditions affect the colouration of great reed warbler Acrocephalus arundinaceus eggs?
    Folia zoologica. Roč. 61, 3-4 (2012), s. 219-224. ISSN 0139-7893. E-ISSN 1573-1189
    Grant CEP: GA AV ČR IAA600930903; GA MŠMT LC06073
    Institucionální podpora: RVO:68081766
    Klíčová slova: egg appearance * passerines * precipitation * temperature * UV reflectance
    Kód oboru RIV: EG - Zoologie
    Impakt faktor: 0.494, rok: 2012

    The goal of this paper was to test the hypothesis that weather conditions, such as temperature and rainfall, affect egg colouration in the great reed warbler Acrocephalus arundinaceus. We failed to find strong support for this hypothesis; nevertheless, our results indicate that temperature has an effect on some egg colour characteristics. Eggshell brightness (PC1) increased with increasing temperature at laying and eggs were darker in the colder year of the two-year study. On the other hand, UV-blue colouration (PC2) scores were higher in the warmer year. The amount of rainfall, however, had no effect on eggshell colouration. As there is an indication from other studies that weather may have an effect on egg appearance through the food availability, we encourage further testing the environmental hypothesis in other bird species. If this holds for more bird species, this would have important implications for the hypotheses about the adaptive function of bright eggshell colouration.
    Trvalý link: http://hdl.handle.net/11104/0213529

     
    Název souboruStaženoVelikostKomentářVerzePřístup
    0383654.pdf1412.6 KBVydavatelský postprintpovolen
     
Počet záznamů: 1  

  Tyto stránky využívají soubory cookies, které usnadňují jejich prohlížení. Další informace o tom jak používáme cookies.