An empirical and experimental test of risk and costs of kleptoparasitism for African wild dogs (Lycaon pictus) inside and outside a protected area
The energetic output of hunting African wild dogs (Lycaon pictus) is extremely high. Therefore, survival and reproductive success depend not only on the ability to secure prey but also on minimizing foraging costs. African wild dogs often coexist with lions (Panthera leo) and spotted hyenas (Crocuta crocuta); these competitors can seriously increase foraging costs by kleptoparasitism. In this study, we empirically and experimentally assessed the risk and costs of kleptoparasitism for African wild dogs inside Hwange National Park, where hyena densities are high, and outside the park, where hyena densities are lower. Lion densities within the study area have been fluctuating. The risk and costs of kleptoparasitism were determined by comparing direct observations during hunt follows of radio collared African wild dog packs and by the use of experimental call-ups with African wild dog sounds inside and outside Hwange National Park. The risk of kleptoparasitism was found to be significantly higher inside the park. The time it took lions and hyenas to get to the kill site during African wild dog hunts was longer outside the park allowing the dogs a longer carcass access time. The found differences in risk and costs of kleptoparasitism could contribute to African wild dog habitat choice for the buffer zone outside Hwange National Park. As habitat choice in and around protected areas is often related to the possibility of exposure to an "edge effect," interspecific competition should be considered in the conservation strategy of African wild dogs. 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/Email:
|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:985-992. 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.