Data/hora: 06/06/2024 05:33:52

Provedor de dados: | 22
País: | Brazil

Título:

Sub-lethal effects of insecticides on Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae) used in the corn crop

Efeitos subletais de inseticidas sobre Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae), utilizados na cultura do milho

Autores: | Storch, Gustavo; Loeck, Alci Enimar; Remor, Mateus; Peloia, Paulo.
Data: | 2014-05-06
Ano: | 2014
Palavras-chave: | Controle químico; Lagarta do Cartucho; Subdosagem de Inseticida; Toxicidade; Zea mays.
Resumo: | The objective of this research was to evaluate the sub-lethal effects of insecticides on fall armyworm population. Initially it was carried out bioassays to obtain curves of response-concentrations for the third stage of fall armyworm. It was used the technique by topic application of 1 µl on the pro-thoracic region of the fall armyworm to the insecticides malathion and lambdacyhalothrin. After obtaining lethal concentrations through Probit analyses it was assessed the sub-lethal effects using the doses corresponding to CL10. After applying the insecticides the fall armyworms were put into 2,5 X 8,5 cm glass tubes, enclosed with water repellent cotton containing artificial diet where they were kept until the pupae phase. The pupae were weighed and sexed for 24 hours. The variables observed were larvae and pupae viability and pupae weight. The longevity was observed over 20 individualized couples fed with a 10% honey solution. It was diary observed the adults mortality by taking them out of the cage. The eggs counting were done every two days. It was used 20 eggs of the second and third egg laying using 10 replications. The insecticides malathion and lambdacyhalothrin increase pupae weight of S. frugiperda. The insecticides malathion and lambdacyhalothrin reduce fertility of S. frugiperda.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Português

Identificador:

http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/7945

10.1818/sap.v13i1.7945

Editor: | Scientia Agraria Paranaensis
Relação: | http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/7945/7229
Formato: | application/pdf

Fonte:

Scientia Agraria Paranaensis; v. 13, n. 1 (2014); 71-79

1983-1471