A Study of the Sterilizing Effect of y " Irradiation on O. Tholozani Ticks

Biological behavior of Ornithodorus Tholozani in laboratory has been studied and a procedure using y-irradiation for sterilization of male ticks has been discussed.In this study, we attempted to determine the tolerance level of different stages of tick to various dose limits not lethal for athropod but capable to decrease its sexual activity or lead to its sterility.Results obtained in this study showed that male ticks which recieved a dose of 12000 rad were able to mate with normal females but their eggs did not hatch.However a dose of 16000 rad of y-rays, led to 99% sterility. But because of normal spermathophores, they were able to compete with normal males.