A situation in which a local nontoxic refuge promotes pest resistance to toxic crops

Jemal Mohammed-Awel; Karen Kopecky; John Ringland

doi:10.1016/j.tpb.2006.08.006

A situation in which a local nontoxic refuge promotes pest resistance to toxic crops

Jemal Mohammed-Awel
, Karen Kopecky
, John Ringland

Mathematics

Valdosta State University
Western University

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

In order to delay the development of pest resistance to genetically engineered insecticidal crop varieties, it is current practice to grow "refuges" of non-toxic plants close to insecticidal crops. We model such a toxic/nontoxic crop complex as an open system with a small stream of toxin-susceptible immigrants. We find that, for intermediate values of the dominance of a pest gene for resistance to the toxin, the local refuge can spoil the benefit that is provided by the immigrant stream. We provide formulas for some important boundaries in parameter space.

Original language	English
Pages (from-to)	131-146
Number of pages	16
Journal	Theoretical Population Biology
Volume	71
Issue number	2
DOIs	https://doi.org/10.1016/j.tpb.2006.08.006
State	Published - Mar 2007

Keywords

Cannibalism
Dominance
GM crops
Open system
Pest resistance
Refuge
Transgenic crops

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10.1016/j.tpb.2006.08.006

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AU - Kopecky, Karen

AU - Ringland, John

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N2 - In order to delay the development of pest resistance to genetically engineered insecticidal crop varieties, it is current practice to grow "refuges" of non-toxic plants close to insecticidal crops. We model such a toxic/nontoxic crop complex as an open system with a small stream of toxin-susceptible immigrants. We find that, for intermediate values of the dominance of a pest gene for resistance to the toxin, the local refuge can spoil the benefit that is provided by the immigrant stream. We provide formulas for some important boundaries in parameter space.

AB - In order to delay the development of pest resistance to genetically engineered insecticidal crop varieties, it is current practice to grow "refuges" of non-toxic plants close to insecticidal crops. We model such a toxic/nontoxic crop complex as an open system with a small stream of toxin-susceptible immigrants. We find that, for intermediate values of the dominance of a pest gene for resistance to the toxin, the local refuge can spoil the benefit that is provided by the immigrant stream. We provide formulas for some important boundaries in parameter space.

KW - Cannibalism

KW - Dominance

KW - GM crops

KW - Open system

KW - Pest resistance

KW - Refuge

KW - Transgenic crops

UR - https://www.scopus.com/pages/publications/33846564417

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VL - 71

SP - 131

EP - 146

JO - Theoretical Population Biology

JF - Theoretical Population Biology

IS - 2

ER -

A situation in which a local nontoxic refuge promotes pest resistance to toxic crops

Abstract

Keywords

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