title: Eclosion blocking effect of ethanolic extract of Leucas aspera (Lamiaceae) on Rhipicephalus (Boophilus) annulatus.
abstract: The crude ethanolic extract of aerial parts of Leucas aspera was tested for its acaricidal properties against Rhipicephalus (Boophilus) annulatus. The per cent adult mortality, inhibition of fecundity and hatching of laid ova were studied at concentrations of 1.56, 3.13, 6.25, 12.5, 25, 50 and 100mg/ml. Adult tick mortality was significant at the highest concentration tested. Inhibition of fecundity of treated groups differed significantly from control and was concentration dependent. L. aspera extract also produced complete failure of eclosion of eggs from the treated ticks even at lower dilutions of the extract.
authors: Department of Veterinary Parasitology, College of Veterinary and Animal Sciences, Pookot, Wayanad, Kerala 673 576, India. drreghuravi@yahoo.com
authors: Reghu
authors: R
authors: Ravindran
authors: Sanis
authors: S
authors: Juliet
authors: A R
authors: AR
authors: Sunil
authors: K G Ajith
authors: KG
authors: Kumar
authors: Suresh N
authors: SN
authors: Nair
authors: K K
authors: KK
authors: Amithamol
authors: M
authors: M
authors: Shynu
authors: Ajay Kumar Singh
authors: AK
authors: Rawat
authors: Srikanta
authors: S
authors: Ghosh
mesh_terms: D056810:Acaricides / Q000737:chemistry / Q000494:pharmacology*; D000818:Animals; D004305:Dose-Response Relationship, Drug; D005260:Female; D005298:Fertility / Q000187:drug effects; D019686:Lamiaceae / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology*; D048494:Rhipicephalus / Q000187:drug effects*
chemical_list: D056810:Acaricides; D010936:Plant Extracts