Biological activity of Ruta chalepensis (Rutaceae) and Sechium pittieri (Cucurbitaceae) extracts on Hypsipyla grandella (Lepidoptera: Pyralidae) larvae

 

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Autores: Mancebo, Fernando, Hilje, Luko, Mora, Gerardo A, Castro, Víctor H, Salazar, Rodolfo
Formato: artículo original
Estado:Versión publicada
Fecha de Publicación:2001
Descripción:Biological activity of a plant extract (common rue, Ruta chalepensis) and a semi purified fraction (from “tacaco cimarrón”, Sechium pittieri) on mahogany shootborer larvae (Hypsipyla grandella) was studied. A randomized complete block design, with four replications, was used. H. grandella third instar larvae were exposed for 24 h to Cedrela odorata leaf discs dipped in several treatment dissolutions of each extract (0.1, 0.32, 1.0, 3.20, and 10%); afterwards, each larva was transferred to a flask containing an artificial diet and was allowed to complete its development. Variables measured included food consumption (foliar area eaten in 24 h), mortality, and developmental effects (developmental time for each larval instar and the pupa, and pupal weight). The common rue extract showed a clear antifeedant activity at a concentration as low as 0.32%, whereas the “tacaco cimarrón” fraction caused toxicity, especially at the two highest concentrations (3.20 and 10%).
País:Portal de Revistas UCR
Institución:Universidad de Costa Rica
Repositorio:Portal de Revistas UCR
Lenguaje:Inglés
OAI Identifier:oai:portal.ucr.ac.cr:article/17436
Acceso en línea:https://revistas.ucr.ac.cr/index.php/rbt/article/view/17436
Palabra clave:hypsipyla grandella
mahogany shootborer
meliaceae
plant extracts
common rue
“tacaco cimarrón”
antifeedant
mortality