IDEAS home Printed from
   My bibliography  Save this article

Inbreeding and measures of immune function in the cricket Teleogryllus commodus


  • Jean M. Drayton
  • Michael D. Jennions


Studies of sexual selection and immunity in invertebrates often assay components of the immune system (e.g., encapsulation response, hemocyte counts) to estimate disease resistance. Because increased disease resistance is thought to enhance fitness in most cases, we might expect a positive relationship between fitness and measured immune function. Indeed, several studies have shown that measures of immunity are correlated with fitness enhancing traits. We used inbreeding to investigate the relationship between fitness and 2 commonly used assays of insect immunity in the cricket Teleogryllus commodus. Previous studies in T. commodus have shown inbreeding depression for several life history and sexually selected traits. We compared the lysozyme-like activity of the hemolymph and hemocyte counts of inbred (full-sibling mating) and outbred crickets. If these measures of immune function are positively correlated with fitness, we expect both measures to decline with inbreeding. However, there was no change in lysozyme-like activity and a significant increase in hemocyte counts with inbreeding. Our results demonstrate that it is not always the fittest individuals that have highest measured immune function. Copyright 2011, Oxford University Press.

Suggested Citation

  • Jean M. Drayton & Michael D. Jennions, 2011. "Inbreeding and measures of immune function in the cricket Teleogryllus commodus," Behavioral Ecology, International Society for Behavioral Ecology, vol. 22(3), pages 486-492.
  • Handle: RePEc:oup:beheco:v:22:y:2011:i:3:p:486-492

    Download full text from publisher

    File URL:
    Download Restriction: Access to full text is restricted to subscribers.

    As the access to this document is restricted, you may want to search for a different version of it.

    More about this item


    Access and download statistics


    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:oup:beheco:v:22:y:2011:i:3:p:486-492. 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). General contact details of provider: .

    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.

    We have no references for this item. You can help adding them by using 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 RePEc Author Service 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.

    IDEAS is a RePEc service hosted by the Research Division of the Federal Reserve Bank of St. Louis . RePEc uses bibliographic data supplied by the respective publishers.