<prompt> Transovarian transmission of infection occurs in -FleasTicksMosquitoesSandfly  <response>: Ticks transmit disease by biting larva and nymph also by biting - Trans-stadially Experiments in ticks have shown trans-ovarian transmission of infection through successive generations. REF: PARKS TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE, 25TH EDITION, PG NO. 840 