Excito-repellency effects of Pelargonium roseum wild (Geraniaceae) essential oil-treated bed nets on the malaria mosquito, Anopheles stephensi Liston, 1901 (Diptera: Culicidae)
Hamzeh Alipour, Seyed Mohammad Amin Mahdian, Abbas Rami, Mojgan Ojaghzadeh Khalil Abad, Masoumeh Amin, Navid Dinparast Djadid and Abbasali Raz
Pelargonium roseum essential oil was used to evaluate the efficiency of excito-repellency activity against Anopheles stephensi Liston, 1901 (Diptera: Culicidae). P. roseum essential oil was used at different concentrations of 25, 50 and 75% (v/v) and the mosquitoes were exposed for an hour. The compound showed 50.5± 2.8%, 65.3± 3.1% and 77± 3.9% entry to exit-trap at concentrations of 25%, 50% and 75% (v/v), respectively. In addition, the mean blood feeding rates for the above concentrations were 11.3, 7.1 and 3 percent. Moreover, survival rates were 49.4± 2.9%, 34.6±3.9% and 23±4.1. 75% concentration of P. roseum was more effective than other concentrations in terms of irritability. Similarly, it was revealed that 25% concentration was clearly less effective. These studies clearly indicated that the populations of malaria vectors can be effectively controlled using P. roseum treated bednets. It seems to be a promising compound for personal protection against An. stephensi.