Bio-activity of Ethanol Extract From Pachira aquatica aubl. Seeds on Hypothenemus hampei (Ferrari)

• Autor(a) principal: Souza, Daniella Karine
• Data de Publicação: 2012
• Outros Autores: Lima, Renato Abreu, Domingues, Cesar Augusto, Pedroso, Lunalva Aurélio, Facundo, Valdir Alves, Gama, Farah Castro, Alves, Maurício Reginaldo
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Saúde e Pesquisa (Online)
• Texto Completo: https://periodicos.unicesumar.edu.br/index.php/saudpesq/article/view/2220
• topic: Hypothenemus hampei; Pachira aquatica; pest control; Hypothenemus hampei; Pachira aquática; Controle de pragas.; .

Insecticide and repellant activity of the ethanol extract from Pachira aquatica seeds on Hypothenemus hampei was evaluated. Vegetal material was macerated with ethanol 95% for seven days to obtain the crude extract. Solvent was then left to evaporate and the ethanol extract obtained. The extract’s insecticide activity (25 mg/mL-1) was performed by the application on a contaminated surface and by topic application. Repellant activity of the extract was undertaken in healthy coffee fruits. Results were analyzed by ANOVA and by Tukey’s test (p 0.01). Extract had highest insecticide activity when exposed on a contaminated surface (100% death rate in 4 h) in contrast to topic application (62% death rate in 5 h). In the case of repellant activity, the extract inhibited 80% of the insects’ attraction to coffee fruit when compared to 20% of control. Results show that P. aquatica seeds have insecticide and repellant activity on H. hampei.