| Registro completo |
| Provedor de dados: |
Ciência Rural
|
| País: |
Brazil
|
| Título: |
Larval development of Spodoptera eridania and Spodoptera frugiperda fed on fresh ear of field corn expressing the Bt proteins (Cry1F and Cry1F + Cry1A.105 + Cry2Ab2)
|
| Autores: |
Bortolotto,Orcial Ceolin
Bueno,Adeney de Freitas
Queiroz,Ana Paula de
Silva,Gabriela Vieira
|
| Data: |
2016-11-01
|
| Ano: |
2016
|
| Palavras-chave: |
Biology
Integrated pest management
Fall armyworm
Southern armyworm
Varietal resistance
|
| Resumo: |
ABSTRACT: The objective of this study was to evaluate extent of larval period, larval survival (%), food consumption, and pupal biomass of Spodoptera eridania and Spodoptera frugiperda (Lepidoptera: Noctuidae ) fed on fresh ears of field corn expressing Bt proteins (Cry1F and Cry1F+Cry1A.105+Cry2Ab2). Larvae of Spodoptera spp. survived less than two days when they consumed Bt corncobs and showed 100% mortality. Spodoptera eridania reared on non-Bt corn cobs showed higher larval development (21.6 days) than S. frugiperda (18.4 days) and lower viability (56.4% and 80.2% for S. eridania and S. frugiperda , respectively). A higher amount of corn grains was consumed by S. eridania (5.4g) than by S. frugiperda (3.9g). In summary, this study demonstrated that the toxins Cry1F and Cry1F + Cry1A.105 + Cry2Ab2 expressed in fresh corn cobs contributed to protect ears of corn against S. frugiperda and the non-target pest S. eridania . However, itis important to monitor non-Bt cornfields because of the potential of both species to cause damage to ear sof corn.
|
| Tipo: |
Info:eu-repo/semantics/article
|
| Idioma: |
Inglês
|
| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001101898
|
| Editor: |
Universidade Federal de Santa Maria
|
| Relação: |
10.1590/0103-8478cr20151461
|
| Formato: |
text/html
|
| Fonte: |
Ciência Rural v.46 n.11 2016
|
| Direitos: |
info:eu-repo/semantics/openAccess
|
