THE LETHAL EFFECTS OF Citrullus colocynthis AGAINST Rhipicephalus spp

Abstract

The study was conducted on the effect of plant extracts Citrullus colocynthis on hard tick engorged females of Rhipicephalus spp. the experiment showed highest effect of alcoholic plant extract on the females of Rhipicephalus
spp by use dipping method in plant extract. The highest lethal effect of Citrullus colocynthis extract was in 50% concentration which gave killing rate about 60% from the total number of parasite in vitro study while the lowest percentage of Citrullus colocynthis extract give the rate 45% in killing of Rhipicephalus spp females in concentration 100%, As for the medium effect result was obtained in 25% concentration of Citrullus colocynthis plant extract which is reached to 53.3% from the killed females hard tick.