IDEAS home Printed from https://ideas.repec.org/a/oup/beheco/v22y2011i4p738-744.html
   My bibliography  Save this article

The expression of dietary conservatism in solitary and shoaling 3-spined sticklebacks Gasterosteus aculeatus

Author

Listed:
  • E. Loys Richards
  • Robert J. Thomas
  • Nicola M. Marples
  • Donna L. Snellgrove
  • Joanne Cable

Abstract

Dietary conservatism (DC) is a long-term, active avoidance of novel food by foragers, present in some (but not all) members of each forager population. Conservative prey choice by predators may exert strong selection pressure on prey populations because individuals with a novel appearance may be protected from predation by their novelty. Recent work has provided the first evidence of DC in a fish species, where novel-colored morphs of prey (Daphnia) were under predation by individual 3-spined sticklebacks Gasterosteus aculeatus. However, in this earlier study, sticklebacks were housed individually, whereas in the wild, they are a strongly shoaling species. Little is known about whether the social context may influence the expression of DC, but even if it does not, shoals are very likely to contain at least one nonconservative individual. Thus, most foraging shoals are expected to exert stronger selection against novel prey than are individual foragers. We found that DC, strong enough to drive a novel prey morph from initial rarity to fixation in a prey population, was evident among both single sticklebacks and shoals, but surprisingly, we found no evidence that isolated fish and shoals differed in the frequency with which they caused this to happen. Copyright 2011, Oxford University Press.

Suggested Citation

  • E. Loys Richards & Robert J. Thomas & Nicola M. Marples & Donna L. Snellgrove & Joanne Cable, 2011. "The expression of dietary conservatism in solitary and shoaling 3-spined sticklebacks Gasterosteus aculeatus," Behavioral Ecology, International Society for Behavioral Ecology, vol. 22(4), pages 738-744.
  • Handle: RePEc:oup:beheco:v:22:y:2011:i:4:p:738-744
    as

    Download full text from publisher

    File URL: http://hdl.handle.net/10.1093/beheco/arr047
    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.

    References listed on IDEAS

    as
    1. Bates, Douglas & M├Ąchler, Martin & Bolker, Ben & Walker, Steve, 2015. "Fitting Linear Mixed-Effects Models Using lme4," Journal of Statistical Software, Foundation for Open Access Statistics.
    Full references (including those not matched with items on IDEAS)

    More about this item

    Statistics

    Access and download statistics

    Corrections

    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:4:p:738-744. 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: https://academic.oup.com/beheco .

    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 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.