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The Area of Discovery of Two Insect Parasites, Nasonia vitripennis (Walker) and Trichogramma evanescens Westwood, in an Artificial Environment

Published online by Cambridge University Press:  31 May 2012

Roy L. Edwards
Roy L. Edwards
Affiliation:
Entomology Institute for Biological Control, Research Branch, Canada Department of Agriculture, Belleville, Ontario
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Extract

Two of the most important factors that contribute to the success of a parasite population are (1) the ability to find hosts and (2) the ability to oviposit in hosts when found. The theories of Thompson (1922, 1924), Nicholson (1933) and Nicholson and Bailey (1935), which have commanded attention in the field of population dynamics for a number of years, emphasized the importance of these factors in quite different ways.

Thompson assumed that the parasites have no difficulty in finding their hosts but have a constant egg supply whereas Nicholson assumed that the egg supply is virtually unlimited but that the parasites have a fixed and limited searching ability which he called their ‘area of discovery’.

Type
Articles
Information
The Canadian Entomologist , Volume 93 , Issue 6 , June 1961 , pp. 475 - 481
Copyright
Copyright © Entomological Society of Canada 1961

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