Modeling a western corn rootworm, Diabrotica virgifera virgifera ( Coleoptera: Chrysomelidae), maturation delay and resistance evolution in Bt corn

被引：6

作者：

Kang, Jung Koo ^{[1
]}

Krupke, Christian H. ^{[2
]}

Murphy, Alexzandra F. ^{[3
]}

Spencer, Joseph L. ^{[4
]}

Gray, Michael E. ^{[5
]}

Onstad, David W. ^{[6
]}

机构：

[1] Univ Illinois, Dept Entomol, Urbana, IL 61801 USA

[2] Purdue Univ, Dept Entomol, W Lafayette, IN 47907 USA

[3] Oregon State Univ, Hermiston Agr Res & Extens Ctr, Hermiston, OR USA

[4] Illinois Nat Hist Survey, Champaign, IL 61820 USA

[5] Univ Illinois, Dept Crop Sci, Urbana, IL 61801 USA

[6] DuPont Agr Biotechnol, Expt Stn, Wilmington, DE USA

来源：

PEST MANAGEMENT SCIENCE | 2014年 / 70卷 / 06期

关键词：

Diabrotica virgifera virgifera; resistance management; Bt corn; TRANSGENIC CORN; SEED MIXTURES; ADAPTATION; EMERGENCE; MAIZE; MORTALITY; FECUNDITY; SURVIVAL; SUSCEPTIBILITY; INSECTICIDES;

D O I：

10.1002/ps.3642

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

BACKGROUNDEmergence delay and female-skewed sex ratios among adults of Diabrotica virgifera virgiferaLeConte (Coleoptera: Chrysomelidae) from Bt corn have been reported in field studies. The authors used a simulation model to study the effect of a maturation delay and a female-skewed sex ratio for D. v. virgifera emerging from Bt corn on the evolution of Bt resistance. RESULTSThe effect of skewed toxin mortality in one sex on evolution of Bt resistance was insignificant. An emergence delay among resistant beetles from Bt corn slowed resistance evolution. A shift in the time of emergence for homozygous susceptible beetles from Bt corn did not have a significant effect on the evolution of Bt resistance in D. v. virgifera. CONCLUSIONThis simulation study suggested that skewed toxin mortality in one sex and an emergence delay for beetles in Bt corn are not major concerns for managing resistance by D. v. virgifera to single-toxin or pyramided Bt corn. (c) 2013 Society of Chemical Industry

引用

页码：996 / 1007

页数：12

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