IDEAS home Printed from https://ideas.repec.org/
MyIDEAS: Login to save this article or follow this journal

Experimental evidence that egg color indicates female condition at laying in a songbird

  • Juan Moreno
  • Elisa Lobato
  • Judith Morales
  • Santiago Merino
  • Gustavo Tomás
  • Josué Martínez-de la Puente
  • Juan J. Sanz
  • Rafael Mateo
  • Juan J. Soler
Registered author(s):

    The signaling hypothesis of eggshell coloration in birds is based on the assumption that females of species with blue-green eggs signal their phenotypic quality to their mates through deposition of the antioxidant biliverdin as pigment. Egg pigmentation may be an expression of the condition of females at laying or of genetic linkages between egg color and female performance variables. We have supplemented 16 pied flycatcher, Ficedula hypoleuca, females with mealworms before and during laying and compared the mass and color of their eggs as measured on the day of laying to those of 16 control females with the same nest construction and laying dates and clutch sizes. Supplemented females laid significantly heavier and more intensely blue-green eggs than control females. Egg blue-green chroma was significantly associated with the amount of biliverdin in eggshells. Egg color, and thus biliverdin content, is an expression of female condition at laying. Copyright 2006.

    If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.

    File URL: http://hdl.handle.net/10.1093/beheco/ark014
    Download Restriction: Access to full text is restricted to subscribers.

    As the access to this document is restricted, you may want to look for a different version under "Related research" (further below) or search for a different version of it.

    Article provided by International Society for Behavioral Ecology in its journal Behavioral Ecology.

    Volume (Year): 17 (2006)
    Issue (Month): 4 (July)
    Pages: 651-655

    as
    in new window

    Handle: RePEc:oup:beheco:v:17:y:2006:i:4:p:651-655
    Contact details of provider: Postal: Oxford University Press, Great Clarendon Street, Oxford OX2 6DP, UK
    Fax: 01865 267 985
    Web page: http://beheco.oxfordjournals.org/
    Email:

    Order Information: Web: http://www.oup.co.uk/journals

    No references listed on IDEAS
    You can help add them by filling out this form.

    This item is not listed on Wikipedia, on a reading list or among the top items on IDEAS.

    When requesting a correction, please mention this item's handle: RePEc:oup:beheco:v:17:y:2006:i:4:p:651-655. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Oxford University Press)

    or (Christopher F. Baum)

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If references are entirely missing, you can add them using this form.

    If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    This information is provided to you by IDEAS at the Research Division of the Federal Reserve Bank of St. Louis using RePEc data.