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THE WITHIN FIELD SPATIAL PATTERN OF THE LARVAL EGYPTIAN ALFALFA WEEVIL, HYPERA BRUNNEIPENNIS (COLEOPTERA: CURCULIONIDAE): AN APPLICATION OF PARAMETER ESTIMATES IN SIMULATION

Published online by Cambridge University Press:  31 May 2012

Jerrel B. Christensen ,
Andrew P. Gutierrez ,
Warren R. Cothran  and
Charles G. Summers
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Abstract

The spatial distribution of the Egyptian alfalfa weevil larvae using Iwao’s index of dispersion was examined in a California alfalfa field. The changing dispersion patterns with time were found to be influenced by both density induced competition for food and varying spatial distribution of host plants. values characteristic for both years quickly stabilized. This made possible a method for estimating leaf consumption rates by larval populations with an aggregated distribution, k being derived from . Field sampling decision rules were also determined.

Type
Articles
Information
The Canadian Entomologist , Volume 109 , Issue 12 , December 1977 , pp. 1599 - 1604
Copyright
Copyright © Entomological Society of Canada 1977

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