Aggressive calls improve leading callers' attractiveness in the treefrog Dendropsophus ebraccatus
In complex acoustic choruses, competitive call timing interactions are often important in female mate choice. In the treefrog Dendropsophus ebraccatus, neighboring males' advertisement calls tend to overlap and females prefer lagging calls. Males that produce leading advertisement calls are thus at a disadvantage relative to lagging males. In this study, I propose a novel strategy by which leading males may overcome this problem: the production of aggressive calls. Aggressive calls are longer than advertisement calls. Therefore, if a lagging male responds with an advertisement call to a leading aggressive call, the leading aggressive call may end after the lagging call. If females prefer calls that end last, then leading aggressive calls may be more attractive. I compared female preferences for advertisement and aggressive calls when they either overlapped, with the aggressive call leading, or alternated. Females preferred the advertisement call in alternation, but this preference was abolished when it overlapped with the aggressive call. I recorded interactions between pairs of males to determine whether leading males utilized aggressive calls as predicted. Among leading calls, aggressive calls were more likely to end after lagging calls than were advertisement calls. When switches to aggressive calling occurred after a bout of overlapping advertisement calls, it was more likely that the male that switched to aggressive calling had been in the leading position previously. These experiments suggest a strategy for leading males to reduce their disadvantage in call timing interactions and provide an explanation for this species' high levels of aggressive calling. 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: |
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:951-959. 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.