The degree of response to increased predation risk corresponds to male secondary sexual traits
AbstractSecondary sexual traits are expected to reflect a balance between sexual selection and natural selection. We test the hypothesis that plasticity in sexual advertisement behaviors can influence this trade-off, allowing showier traits than expected for a given level of predation risk. Specifically, we tested whether the degree of behavioral plasticity exhibited in response to chemical cues of a co-occurring predatory wolf spider corresponds to courtship rate and the degree of ornamentation in male wolf spiders. Both ornamented (brush-legged) males and non-ornamented males decreased locomotion, decreased their likelihood to court, and increased their time to initiate courtship in response to predator cues. However, brush-legged males increased their time to initiate courtship more than did non-ornamented males, demonstrating a greater response to the risk of predation for the more ornamented males. Similarly, within brush-legged males, individuals with the highest courtship rates also showed the greatest degree of plasticity in time to initiate courtship across predation contexts, whereas behavioral plasticity was independent of courtship rate for non-ornamented males. We found no correlation between ornament size and plasticity in response to predator cues within brush-legged males. Ultimately, we suggest that our data provide support for the hypothesis that behavioral plasticity in response to predator cues may alter the trade-off between predation risk and sexual advertisement and may be more important for males with higher degrees of conspicuousness in ornamentation and courtship. Copyright 2011, Oxford University Press.
Download InfoIf 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.
Bibliographic InfoArticle provided by International Society for Behavioral Ecology in its journal Behavioral Ecology.
Volume (Year): 22 (2011)
Issue (Month): 2 ()
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/
You can help add them by filling out this form.
reading list or among the top items on IDEAS.Access and download statisticsgeneral 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 references are entirely missing, you can add them using this form.