Does singular and stacked corn affect choice behavior for oviposition and feed in Spodoptera frugiperda (Lepidoptera: noctuidae)?
| Autor: | Marcos Antonio Matiello Fadini, Camila Da Silva Fernandes Souza, P. T. Nascimento, Fernando Hercos Valicente, R. G. von Pinho |
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| Přispěvatelé: | Universidade Federal de Lavras, Universidade Federal de São João del-Rei, FERNANDO HERCOS VALICENTE, CNPMS. |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Oviposition
Genetically modified crops Spodoptera Choice Behavior Zea mays Lepidoptera genitalia parasitic diseases Animals Hybrid Desempenho reprodutivo Genetically modified maize biology Bacillus thuringiensis Toxins Behavior Animal fungi food and beverages Feeding Behavior Verme biology.organism_classification Plants Genetically Modified Horticulture Praga de Planta Insect Science Planta Transgênica Noctuidae Fall armyworm Interação inseto-planta Female PEST analysis |
| Zdroj: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice) Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
| Popis: | Little is known about the effects of genetically modified corn plants on the foraging of Spodoptera frugiperda (J.E. Smith). Therefore, this study examines whether singular herbicide-tolerant and insect-resistant plants and their stacked events interfere with food reference and oviposition of S. frugiperda. Two non-Bt corn hybrids and three Bt-hybrids, some of them with glyphosate tolerance (GT), were evaluated. Food preference of larvae and biological parameters were assessed. Oviposition preference bioassays involved choice and no choice condition in plants uninfested and previously infested by larvae in a greenhouse and in the field. The results indicate that there is no relationship between preference of larvae and adult moths. Adult females selected preferentially transgenic hybrids, while larvae selected non-Bt hybrid. Fall armyworm larvae avoid Bttoxin-expressing leaf tissues, survived only on the non-Bt leaf tissues, and showed minor differences in other life-history traits reared on GT and non-transgenic corn leaf tissues. Female moths showed preference for transgenic plants to lay eggs, but with variable output between previously infested and uninfested plants with larvae. The fact that moths preferred Ag 3700RR2 and non-Bt hybrids for oviposition supports the refuge?s strategy aiming at producing susceptible individuals. The use of this hybrid must be integrated with a program of control. The results showed also the importance of correct hybrid selection as part of insect resistance management to Bt-plants. The implications of these findings for understanding the impacts of plant-mediated cues on pest behavior in transgenic crop systems are discussed. Made available in DSpace on 2020-04-15T00:59:43Z (GMT). No. of bitstreams: 1 Doessingular.pdf: 689061 bytes, checksum: d9d9bab21407bcb83c37172244a3ec00 (MD5) Previous issue date: 2020 |
| Databáze: | OpenAIRE |
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