Information gleaned and former patch quality determine foraging behavior of parasitic wasps
A good estimate of patch quality is of prime importance for a randomly searching forager with limited longevity or fecundity. The forager can perceive cues related to the presence of resource on arrival in a patch and estimates its quality relatively to previous patches. This prior estimate can then be updated through sampling in the patch. However, these 3 sources of information have never been manipulated independently in the same experiment to quantify the effect of each one on foraging behavior. Here, we report experiments highlighting the mechanism by which the braconid Asobara tabida, a parasitoid wasp laying eggs in Drosophila larvae, uses information both gleaned from the previous patch visited and obtained on arrival in the next one, to estimate the quality of the latter and to behave accordingly. We disentangled the effects of the prior estimate of patch quality made on arrival in the patch and the effect of sampling in the patch on the foraging behavior of the parasitoid. We show that information gleaned by A. tabida from a previously visited patch plays a strong role in the response to both chemical cues and oviposition events by parasitoid when exploiting a patch. The information process highlighted in the present study is consistent with the Bayesian-like decision-making, which is suspected in parasitoids, bumblebees, and humans. Moreover, motivation to stay in the patch is likely to be tuned to the forager's experience. Copyright 2011, Oxford University Press.
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.
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.
Volume (Year): 22 (2011)
Issue (Month): 5 ()
|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/
|Order Information:||Web: http://www.oup.co.uk/journals|
When requesting a correction, please mention this item's handle: RePEc:oup:beheco:v:22:y:2011:i:5:p:1064-1069. 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.