The effect organic solvent extract of Datura metel leaves on some biological aspects of Hyalomma schulzei (olenev) (Acari:Ixodidae)

Abstract

The current studay include the investigation of impact organic solvent
extract(Ethyl alcohol, Ethyl acetate, Hexan ) of Datura metel leaves on immature
and adult stage of the ticks Hyalomma schulzei under laboratory conditions.
Biological activity of extracts was determined using different concentrations
(10,30,50,70)%. The results showed the followings:
Mortality eggs and larvae after exposure to different concetraction to three
Solvent reahed 90% the mortarty of non-feedeing nymphs reached 90%, 77.7%,
68.85% and feedeing nymphs reached %83.85 , 72.78 % , 66.14% respectively at the
Concentration of 70 mg\ml while mortility rate of adult stage non-feedeing
males90% , 61.22% , 59% and feedeing77.7% , 57% , 51.14% while non-feedeing
females 72.29%, 53.15% , 46.92% . and the feedeingfemales 63.93%, 51.84%, 40.7at
concentration 70 mg\ml after exposur to previously extract on respectively. The
result indicated that Ethyalcohol. extracts were more effective than Ethyle acetate
and Hexan.