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In vitro acaricidal properties of Semecarpus anacardium fruit and Datura stramonium leaf extracts against acaricide susceptible (IVRI-I line) and resistant (IVRI-V line) Rhipicephalus (Boophilus) microplus

Ghosh, Srikant, Tiwari, Shashi Shankar, Srivastava, Sharad, kumar, Sachin, Sharma, Anil Kumar, Nagar, Gaurav, Kumar, K.G. Ajith, Kumar, Rajesh, Rawat, A.K.S.
Research in veterinary science 2015 v.101 pp. 69-74
Datura stramonium, Rhipicephalus microplus, Semecarpus anacardium, acaricidal properties, acaricides, adults, fruit extracts, fruits, leaf extracts, leaves, mortality, oviposition, pyrocatechol, ticks
In an attempt to identify plants having anti-tick properties, the 95% ethanolic and 50% hydro-ethanolic extracts of the fruits of Semecarpus anacardium and leaves of Datura stramonium were evaluated against reference tick lines of Rhipicephalus (Boophilus) microplus. The 95% ethanolic extracts of S. anacardium and D. stramonium caused 50% and 20% mortality, respectively, within 72h of treatment by adult immersion test. The LC90 value of the ethanolic fruit extract of S. anacardium was determined as 13.5% (CI 12.05–15.12). The extract was also found efficacious (73.3%±3.3%) against the multi-acaricide-resistant IVRI-V line of R.(B.) microplus. The S. anacardium extract significantly affected the reproductive physiology of treated ticks by inhibiting the oviposition and was found safe. The HPTLC fingerprinting profile revealed the presence of pyrocatechol as a marker compound. The acaricidal property of S. anacardium against chemical acaricide-resistant R. (B.) microplus was discussed.