Applied Entomology and Vector Control Laboratory, Department of Zoology, Faculty of Science, Dayalbagh Educational Institute (Deemed to be University), Agra – 282 005, Uttar Pradesh, India
*Corresponding author's E-mail: lalitmohan_dei@rediffmail.com
Online published on 12 November, 2019.
The acaricidal activities of crude petroleum ether, hexane and methanol extracts of roots of Citrullus colocynthis roots were assessed against the engorged females of Rhipicephalus (Boophilus) microplus using Adult immersion test (AIT), independently. The results obtained indicated that the crude extracts tested were effective against R. microplus adults and petroleum ether extract was found to be the most potent with LC50382.034 and LC901361.736 ppm followed by methanol extract with LC50467.816 and LC901235.793 ppm and hexane extract with LC50755.418 and LC901483.476 ppm. Estimated reproductive factor (ERF) and % inhibition of egg laying were also assessed along with mortality response of tested concentration of each extract. Petroleum ether extract being the most effective among all the tested extracts showed egg laying inhibition 47.03, 53.54, 72.22, 86.93, 90.00 and 93.36% at 100, 200, 300, 400, 500 and 600 ppm, respectively.
Acaricidal activity, bioefficacy, Citrullus colocynthis, phytoextracts, Rhipicephalus microplus
