Larval Dispersal of Spodoptera frugiperda Strains on Bt Cotton: A Model for Understanding Resistance Evolution and Consequences for its Management
| Autor: | José Bruno Malaquias, Adriano Gomes Garcia, Wesley Augusto Conde Godoy, Celso Omoto, Francisco S. Ramalho |
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| Přispěvatelé: | JOSÉ B. MALAQUIAS, USP - ESALQ, WESLEY A. C. GODOY, USP - ESALQ, ADRIANO G. GARCIA, USP - ESALQ, FRANCISCO DE SOUSA RAMALHO, CNPA, CELSO OMOTO, USP - ESALQ. |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Zoology Gossypium hirsutum lcsh:Medicine Genetically modified crops Cotton Biology Spodoptera medicine.disease_cause Gossypium 01 natural sciences Insect Control Article Lepidoptera genitalia Insecticide Resistance Larvae Bacterial Proteins Infestation Botany parasitic diseases medicine Animals lcsh:Science Larva Multidisciplinary Lepidoptero Host (biology) Algodão fungi lcsh:R Spodoptera frugiperda biology.organism_classification Plants Genetically Modified 010602 entomology Bt cotton Biological dispersal lcsh:Q RESISTÊNCIA GENÉTICA VEGETAL 010606 plant biology & botany |
| Zdroj: | Scientific Reports, Vol 7, Iss 1, Pp 1-10 (2017) Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice) Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP Scientific Reports |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/s41598-017-16094-x |
| Popis: | High dispersal of Lepidoptera larvae between non-Bt and Bt cotton plants can favour the evolution of insect resistance; however, information on host acceptance of neonates in tropical transgenic crops is scarce. Therefore, the purposes of this study were as follows: (i) to investigate the feeding behaviour of susceptible and Cry1F-resistant strains of Spodoptera frugiperda (J.E. Smith) on Bt and non-Bt cotton (Gossypium hirsutum L.) varieties and (ii) to understand the possible effects of cotton field contamination on the dispersal and infestation capacity of S. frugiperda larvae by using an individual-based model. The main results of this paper are as follows: (1) the highest post-feeding larval dispersal of the Cry1F-resistant strain occurred at an exposure time of 18–24 h; (2) via video tracking assays, we found that the least distance moved was by larvae resistant to Cry1F on non-Bt cotton; and (3) the model indicated differences in mobility capacity between Bt and non-Bt cotton. We conclude that resistant neonates exhibit sedentary behaviour. Our report represents the first findings concerning the fitness cost of larval behaviour traits of S. frugiperda associated with Cry1F resistance in Brazilian populations. |
| Databáze: | OpenAIRE |
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