Cookies Policy
X

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

An Evaluation of the Roles of Predation Rate and Predation Risk as Selective Pressures on Primate Grouping Behaviour

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

Access this article

+ Tax (if applicable)
Add to Favorites

image of Behaviour

Establishing the importance of predation pressure in determining primate social structure has generated a great deal of discussion. However, the substantive issues in this debate have been obscured by a conflation of the respective roles of predation risk and predation rate as selective forces. In addition, the reported relationships between predation rate and both group size and body weight are likely to be confounded by the effects of reproductive rate and activity period. We propose that the level of sustainable predation rate for a species is determined by the rate at which it is able to reproduce, and that, within this constraint, a species adjusts its body weight and a population its group size so as to reduce predation rate to some tolerable level. In effect, the observed predation rate is the excess mortality from predation that animals are unable to control by adjusting their behaviour. This implies that there should be no relationship between predation rate and either group size or body weight, once the effects of reproductive rate and activity period are removed. We analyse data from the primate literature and show that reproductive rate is indeed the best predictor of a species' predation rate, and that the reported relationships with group size are entirely attributable to a combination of the inclusion of nocturnal species which do not use group size as an anti predator response and the confounding effects of reproductive rate. We discuss these findings in the light of current investigations on predation risk, and conclude that an understanding of the role of predation as a selective pressure on primates will only be achieved by attempts to study the factors that are important in determining a primate's perceived risk of predation.

Affiliations: 1: Population Biology Research Group, School of Biological Sciences, Nicholson Building, University of Liverpool, Liverpool L69 3BX, England, UK;, Email: rahilll@liv.ac.uk; 2: Population Biology Research Group, School of Biological Sciences, Nicholson Building, University of Liverpool, Liverpool L69 3BX, England, UK;, Email: rimd@liv.ac.uk

10.1163/156853998793066195
/content/journals/10.1163/156853998793066195
dcterms_title,pub_keyword,dcterms_description,pub_author
6
3
Loading
Loading

Full text loading...

/content/journals/10.1163/156853998793066195
Loading

Data & Media loading...

http://brill.metastore.ingenta.com/content/journals/10.1163/156853998793066195
Loading

Article metrics loading...

/content/journals/10.1163/156853998793066195
1998-06-01
2016-09-27

Sign-in

Can't access your account?
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation