title: Acaricidal activity of extracts from the leaves and aerial parts of Neoglaziovia variegata (Bromeliaceae) on the cattle tick Rhipicephalus (Boophilus) microplus.
abstract: This experiment was carried out to study the bioacaricidal activity of Neoglaziovia variegata against engorged females of Rhipicephalus (Boophilus) microplus. The mortality and fecundity of groups of engorged adult females exposed to different concentrations of ethanol, hexane, chloroform, and ethyl acetate extracts obtained from the leaves and aerial parts of N. variegata were evaluated, using three treatments with concentrations of 5, 10 e 25 mg/ml; two controls (distilled water and distilled water with drops of cremophor); with three replicates. The hexane extract of the leaves demonstrated significant results, presenting 94.1% inhibition of oviposition; 0.33% the average percentage of eclosion of eggs; and 99.8% of effectiveness. These results indicate N. variegata, particularly the hexane extract of leaves, as potential alternative control agents of R. (B.) microplus. Pharmacological and chemical studies are continuing in order to characterize the mechanism responsible for this effect.
authors.affiliation: Laboratory of Parasitic Diseases, Federal University of San Francisco Valley, Univasf, Petrolina, PE, Brazil. Electronic address: annecsdantas@gmail.com.
authors.forename: A C S
authors.initials: AC
authors.lastname: Dantas
authors.affiliation: Laboratory of Parasitic Diseases, Federal University of San Francisco Valley, Univasf, Petrolina, PE, Brazil.
authors.forename: D M R
authors.initials: DM
authors.lastname: Machado
authors.affiliation: Laboratory of Parasitic Diseases, Federal University of San Francisco Valley, Univasf, Petrolina, PE, Brazil.
authors.forename: A C
authors.initials: AC
authors.lastname: Araujo
authors.affiliation: Nucleus of Study and Research of Medicinal Plants, Federal University of San Francisco Valley, Univasf, Petrolina, PE, Brazil.
authors.forename: R G
authors.initials: RG
authors.lastname: Oliveira-Junior
authors.affiliation: Nucleus of Study and Research of Medicinal Plants, Federal University of San Francisco Valley, Univasf, Petrolina, PE, Brazil.
authors.forename: S R G
authors.initials: SR
authors.lastname: Lima-Saraiva
authors.affiliation: Nucleus of Study and Research of Medicinal Plants, Federal University of San Francisco Valley, Univasf, Petrolina, PE, Brazil.
authors.forename: L A A
authors.initials: LA
authors.lastname: Ribeiro
authors.affiliation: Nucleus of Study and Research of Medicinal Plants, Federal University of San Francisco Valley, Univasf, Petrolina, PE, Brazil.
authors.forename: J R G S
authors.initials: JR
authors.lastname: Almeida
authors.affiliation: Laboratory of Parasitic Diseases, Federal University of San Francisco Valley, Univasf, Petrolina, PE, Brazil.
authors.forename: M C
authors.initials: MC
authors.lastname: Horta
mesh_terms: D056810:Acaricides; D000818:Animals; D031229:Bromeliaceae / Q000737:chemistry*; D005260:Female; D010936:Plant Extracts; D018515:Plant Leaves / Q000737:chemistry; D048494:Rhipicephalus
chemical_list: D056810:Acaricides; D010936:Plant Extracts
keywords: Acaricide; Caatinga; Control; Plant extract; Tick