Data/hora: 11/06/2024 11:57:33

Provedor de dados: | 52
País: | Brazil
Título: | Effects of croton urucurana extracts and crude resin on Anagasta kuehniella (Lepidoptera: Pyralidae)
Autores: | Silva,Luciana Barboza; Silva,Walciane; Macedo,Maria Ligia Rodrigues; Peres,Marize Terezinha Lopes Pereira.
Data: | 2009-06-01
Ano: | 2009
Palavras-chave: | Euphorbiaceae; Insecticide; 'sangra d'água'; Meal moth; Toxicity.
Resumo: | Hundreds of plant species have been studied in order to find out the active ingredient responsible for their insecticidal activity against the pests of economic importance. To verify the insecticidal activity in the husk of stem of Croton urucurana Baillon 1864 (Euphorbiaceae) against Anagasta kuehniella Zeller 1879 (Lepidoptera: Pyralidae), the methanolic (EMeOH) extract, dichloromethane fraction (FDM), ethyl acetate fraction (FAE) and crude resin, incorporated into an artificial diet were evaluated. EMeOH (0.5, 1.0 and 2.0%) and crude resin (2.0%) interfered with neither the weight nor the survival of fourth instar larvae and other analyzed parameters. FDM (2.0%) fraction caused mortality of 65%, and the artificial diet containing 2.0, 1.0 and 0.5% FAE caused 100, 55 and 68% mortality respectively when compared with the control, confirming the least efficiency rates of food conversion for FDM(2.0%) and FAE(1.0%). The tryptic analysis performed with the midgut fluid of fourth-instar larvae demonstrated that tryptic and chymiotryptic activities for the larvae fed artificial diet containing EMeOH and crude resin were not different.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000300018
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-89132009000300018
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.52 n.3 2009
Fonte: | info:eu-repo/semantics/openAccess