Show simple item record

dc.contributor.authorMalaquias, José Bruno [UNESP]
dc.contributor.authorCaprio, Michael A.
dc.contributor.authorGodoy, Wesley A. C.
dc.contributor.authorOmoto, Celso
dc.contributor.authorRamalho, Francisco S.
dc.contributor.authorPachú, Jéssica K. S.
dc.identifier.citationJournal of Pest Science.
dc.description.abstractTransgenic cotton plants producing Bacillus thuringiensis (Bt) (Berliner) insecticidal proteins have contributed to the management of key lepidopteran pests. Larval high dispersal rates between non-Bt and Bt plants in landscapes with seed contamination can speed the evolution of insect resistance to Bt plants. We evaluated the effect of Bt and non-Bt cotton plants on the larval dispersal pattern and survival of susceptible, heterozygous and Cry1F-resistant Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) genotypes in pure and contaminated artificial micro-landscape. A computer model was used to analyse the consequences of S. frugiperda larval dispersal behaviour on resistance evolution in refuge areas with different contamination levels and migration of different adult genotype combinations. The biological data from artificial micro-landscape experiments were used in simulations of macro-landscape scales. The Cry1F-resistant genotype avoided non-Bt cotton. The heterozygote had a similar larval dispersal behaviour as the susceptible genotype when non-Bt cotton was the central plant. Our simulations provide evidence that in refuge areas contaminated with Bt cotton plants, the evolution of resistance may be > 75-fold faster in relation to a contamination-free refuge. In conclusion, S. frugiperda resistance management practices on regional scales with contamination-free refuges are important to prevent loss in different crops.en
dc.relation.ispartofJournal of Pest Science
dc.subjectCry1F resistance
dc.subjectFall armyworm
dc.subjectLarval dispersal
dc.titleExperimental and theoretical landscape influences on Spodoptera frugiperda movement and resistance evolution in contaminated refuge areas of Bt cottonen
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionMississippi State University
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.description.affiliationDepartment of Entomology and Acarology Luiz de Queiroz College of Agriculture (ESALQ) University of São Paulo (USP), Av. Pádua Dias 11
dc.description.affiliationInstitute of Biosciences São Paulo State University (UNESP)
dc.description.affiliationDepartment of Biochemistry Molecular Biology Entomology and Plant Pathology Mississippi State University
dc.description.affiliationBiological Control Unit Embrapa Algodão, Av. Osvaldo Cruz, 1143
dc.description.affiliationUnespInstitute of Biosciences São Paulo State University (UNESP)
dc.rights.accessRightsAcesso aberto
Localize o texto completo

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record