Geographic susceptibility of Heliothis virescens and Helicoverpa zea (Lepidoptera: Noctuidae) to Bacillus thuringiensis

Geographic variability in sensitivity of field-collected Heliothis virescens (F.) and Helicoverpa zea (Boddie) to Bacillus thuringiensis (Berliner) was studied to establish a geographic baseline for comparison of future population responses to the increased use of B. thuringiensis-based insect contr...

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Bibliographic Details
Published inJournal of economic entomology Vol. 86; no. 4
Main Authors Stone, T.B, Sims, S.R
Format Journal Article
LanguageEnglish
Published 01.08.1993
Subjects
BACILLUS THURINGIENSIS
CONTROL BIOLOGICO
ENDOTOXINAS
ENDOTOXINE
ESTADOS UNIDOS DE AMERICA
ETATS UNIS
HELICOVERPA ZEA
HELIOTHIS VIRESCENS
HOTE
HUESPEDES
LUTTE BIOLOGIQUE
PLAGAS DE PLANTAS
RAVAGEUR DES PLANTES
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Summary:Geographic variability in sensitivity of field-collected Heliothis virescens (F.) and Helicoverpa zea (Boddie) to Bacillus thuringiensis (Berliner) was studied to establish a geographic baseline for comparison of future population responses to the increased use of B. thuringiensis-based insect control products. Colonies of H. virescens and H. zea were established from populations collected from several southern states, plus Hawaii and the Virgin Islands. Populations were evaluated for their susceptibility to a microbial B. thuringiensis product, Dipel, and to purified CryIA(c) endotoxin protein. The range of LC50s among populations in response to Dipel and purified endotoxin, respectively, were 3.6- and 8-fold for H. virescens and 13- and 16-fold for H. zea
Bibliography:H10
9425650
ISSN:0022-0493
1938-291X
DOI:10.1093/jee/86.4.989