Evaluation of the insecticidal effect by phytochemical screening of crude methanol extracts of Thalictrum rhynchocarpum Dill on Anopheles gambiae Giles in Ethiopia

According WHO mosquitoes are the number one public enemy in the world. The current status indicates 700,000,000 people infected globally by mosquitoes in 100 countries annually. As per the Environmental Act 1969, so many regulations had been framed before applications of chemical control agents and this is right time to promote alternative method to control the multiplication of mosquitoes which should be eco-friendly and cost effective. In this regard, some plant extracts are widely used as traditional medicine all over the world against mosquitoes and many medicinal plants have been tested for larvicidal, ovicidal and adulticidal action on different mosquito species. One such plant is Thalictrum rhynchocarpum which is a medicinal plant commonly found in India has been suggested for insecticidal activity against mosquito. Hence the present study has been conducted to identify the efficacy of T. rhynchocarpum (both root and leaf) on the common malaria causing mosquito Anopheles gambiae. The methanolic extract of both leaves and roots of T. rhynchocarpum are effective in the control of both larvae and adult mosquitoes. When compared to the, leaves, the roots showed more efficacy in the control of mosquitoes.