Produção Nacional
Revisado por pares
Acaricidal activity of Amburana cearensis on the cattle tick Rhipicephalus (Boophilus) microplus
2015; UNIVERSIDADE FEDERAL DE SANTA MARIA; Volume: 46; Issue: 3 Linguagem: Inglês
10.1590/0103-8478cr20150334
ISSN1678-4596
AutoresAnne Caroline dos Santos Dantas, Andreina de Carvalho Araújo, Alessandra Gomes Marques Pacheco, Alexsandro Branco, Luís Antonio Sangioni, Jackson Roberto Guedes da Silva Almeida, Maurício Cláudio Horta,
Tópico(s)Entomopathogenic Microorganisms in Pest Control
ResumoABSTRACT: This experiment was carried out to study the bioacaricidal activity of Amburana cearensis against engorged females of Rhipicephalus (Boophilus) microplus. The crude ethanolic extract from the leaves of A. cearensis was submitted to partition with organic solvents (hexane, chloroform and ethyl acetate) in order of increasing polarity; and evaluated using three treatments at concentrations of 5, 10 and 25mg ml-1. To evaluate the acaricidal activity, engorged females were submitted to the adult immersion test. Parameters analyzed were the weight of females; weight of egg mass; percentage of hatch; reproductive efficiency; expected rate of reproduction; and efficacy. For each extract and concentrating fraction, tests were performed in triplicate. Among all fractions, the hexane (2.5%) achieved the best results in all parameters analyzed: 52.7% of inhibition of oviposition; 39% of hatching rate; 3,271 index of reproductive efficiency; and 67.0% effectiveness. The extract obtained gradual dose response with increasing concentration; and could be used as an aid in the control of R. (B.) microplus therapy.
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