Data/hora: 11/06/2024 09:49:19

Provedor de dados: | 65
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
Fonte: | info:eu-repo/semantics/openAccess