Eclosion blocking effect of ethanolic extract of Leucas aspera (Lamiaceae) on Rhipicephalus (Boophilus) annulatus

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 100 m...

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Bibliographic Details
Published in:Veterinary parasitology 2011-06, Vol.179 (1), p.287-290
Main Authors: Ravindran, Reghu, Juliet, Sanis, Sunil, A.R., Ajith Kumar, K.G., Nair, Suresh N., Amithamol, K.K., Shynu, M., Rawat, Ajay Kumar Singh, Ghosh, Srikanta
Format: Article
Language:English
Subjects:
Acaricidal activity
Acaricides - chemistry
Acaricides - pharmacology
Animals
Boophilus annulatus
Dose-Response Relationship, Drug
Eclosion
Female
Fertility - drug effects
Ixodidae
Lamiaceae
Lamiaceae - chemistry
Leucas
Leucas aspera
Plant Extracts - chemistry
Plant Extracts - pharmacology
Rhipicephalus
Rhipicephalus (Boophilus) annulatus
Rhipicephalus - drug effects
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Summary: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 100 mg/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.
ISSN:0304-4017
1873-2550
DOI:10.1016/j.vetpar.2011.02.021