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Predator-Prey Systems in Pest Management

Published online by Cambridge University Press:  10 May 2017

Carolyn R. Harper*
Affiliation:
Department of Resource Economics, University of Massachusetts
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Abstract

The use of chemical pesticides frequently causes minor pests to become serious problems by disturbing the natural controls that keep them in check. As a result, it is possible to suffer heavier crop losses after pesticides are introduced than before their introduction. Efficient use of pesticides requires complete biological modeling that takes the appropriate predator-prey relationships into account. A bioeconomic model is introduced involving three key species: a primary target pest, a secondary pest, and a natural enemy of the secondary pest. Optimal decision rules are derived and contrasted with myopic decision making, which treats the predator-prey system as an externality. The issue of resistance in the secondary pest is examined briefly.

Type
Articles
Copyright
Copyright © 1991 Northeastern Agricultural and Resource Economics Association 

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