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COMPARISON OF PREDATION RATES

Published online by Cambridge University Press:  31 May 2012

N. Gilbert
N. Gilbert
Affiliation:
Institute of Animal Ecology, University of British Columbia, Vancouver V6T 1W5
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Extract

Consider a predator which, when hungry, has a discovery rate (= search rate × probability of finding prey) of a prey per unit time. When satiated, its demand rate for prey is 1/T, where T is the time-interval between successive prey captures when the predator is surrounded by excess of prey. Both a and T may vary with temperature, etc. Let s(N) be the expression for prey survival rate, during an infinitesimal time-period dt, as a function of prey density N.

Information

Type
Articles
Information
The Canadian Entomologist , Volume 113 , Issue 11 , November 1981 , pp. 1047 - 1048
Copyright
Copyright © Entomological Society of Canada 1981

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References

Frazer, B. D. and Gilbert, N.. 1976. Coccinellids and aphids. J. ent. Soc. Bri. Columb. 73: 33–56.Google Scholar
Holling, C. S. 1959. Some characteristics of simple types of predation and parasitism. Can. Ent. 91: 385–398.CrossRefGoogle Scholar