Advanced Search
MyIDEAS: Login to save this article or follow this journal

Yolk carotenoids have sex-dependent effects on redox status and influence the resolution of growth trade-offs in yellow-legged gull chicks

Contents:

Author Info

  • Nicola Saino
  • Maria Romano
  • Manuela Caprioli
  • Diego Rubolini
  • Roberto Ambrosini
Registered author(s):

    Abstract

    Avian eggs are rich in carotenoids, which derive from maternal diet where they may be available in limiting amounts. Egg carotenoids may accomplish major roles in antioxidant protection or modulate physiological functions and growth, interfering with offspring redox status, potentially in a sex-dependent way. In this study of maternal effects in relation to sex and laying order of yellow-legged gull (Larus michahellis) chicks, we analyzed the consequences of increased yolk lutein concentration on plasma antioxidant capacity (AOC) and an index of early oxidative damage (reactive oxygen metabolites, ROM), till 9 days after hatching. To this end, for the first time we directly manipulated yolk lutein, thus avoiding any effect on other components of egg quality due to maternal supplementation before laying. Lutein did not increase AOC but increased ROM in males and in first-laid chicks. Hence, lutein did not act as an antioxidant and determined increased early oxidative damage, possibly because of upregulation of immune or other physiological functions, but these effects were sex-related and apparent in first-laid chicks with larger yolk lutein supply. ROM positively covaried with AOC, suggesting a trade-off between AOC and oxidative damage. Moreover, lutein injection altered the covariation between body size or immunity and AOC or ROM. Carotenoids may thus not be major antioxidants in birds and rather affect redox status by increasing oxidative damage in a sex-dependent way and interfere with the resolution of growth trade-offs. In the absence of sex-related allocation, maternal decisions on egg carotenoid concentration may depend on the balance between divergent effects on either sex. Copyright 2011, Oxford University Press.

    Download Info

    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/arq220
    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.

    Bibliographic Info

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

    Volume (Year): 22 (2011)
    Issue (Month): 2 ()
    Pages: 411-421

    as in new window
    Handle: RePEc:oup:beheco:v:22:y:2011:i:2:p:411-421

    Contact details of provider:
    Postal: Oxford University Press, Great Clarendon Street, Oxford OX2 6DP, UK
    Fax: 01865 267 985
    Email:
    Web page: http://beheco.oxfordjournals.org/

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

    Related research

    Keywords:

    References

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

    Citations

    Lists

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

    Statistics

    Access and download statistics

    Corrections

    When requesting a correction, please mention this item's handle: RePEc:oup:beheco:v:22:y:2011:i:2:p:411-421. 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.