Data/hora: 09/06/2024 14:59:37

Provedor de dados: | Revista Brasileira de Engenharia Agrícola e Ambiental
País: | Brazil
Título: | Insecticidal and growth inhibiting action of the supercritical extracts of Melia azedarach on Spodoptera frugiperda
Autores: | Scapinello,Jaqueline; Oliveira,José V. de; Chiaradia,Luis A.; Tomazelli Junior,Osmar; Niero,Rivaldo; Dal Magro,Jacir.
Data: | 2014-08-01
Ano: | 2014
Palavras-chave: | Supercritical extraction; Fall armyworm; Chinaberry.
Resumo: | This study evaluates the effects of supercritical carbon dioxide extracts obtained from the fruit of Melia azedarach L. (Meliaceae) on the development of Spodoptera frugiperda J.E. Smith, 1797 (Lepidoptera: Noctuidae), from the larval period until the insect adulthood. For this purpose, a laboratory-scale extraction unit was operated at 60 °C and 200 bar. Larval mortality increased by raising the extract concentration tested: the value of LC50 calculated by Probit analysis was 376.74 mg kg-1, and at a concentration of 5000 mg kg-1, the mortality was 100%. The extract exhibited insect growth inhibitory activity in the higher concentrations (500 mg kg-1, 1000 mg kg-1 and 5000 mg kg-1), due to antifeedant action, resulting in larvae and pupae with mass and body length significantly smaller than the control. At the lowest concentration tested (100 mg kg-1), bioactive effects from the adult stage of the insect were observed, with low viability pupal and adults presenting morphological deformities, hence indicating chronic toxicity effect.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662014000800014
Editor: | Departamento de Engenharia Agrícola  - UFCG
Relação: | 10.1590/1807-1929/agriambi.v18n08p866-872
Formato: | text/html
Fonte: | Revista Brasileira de Engenharia Agrícola e Ambiental  v.18 n.8 2014
Fonte: | info:eu-repo/semantics/openAccess