EXPERIMENTAL TRANSMISSION OF BABESIA-OVATA-OSHIMENSIS N-VAR OF CATTLEIN JAPAN BY HAEMAPHYSALIS-LONGICORNIS

Transovarial transmission of a newly isolated large intraerythrocytic parasite, Babesia sp. 1 by Haemaphysalis longicornis was experimentall y demonstrated. Larvae of H. longicornis were transovarially infected with the parasite by feeding as adults on the calf which had been expe rimentally infected with B. sp. 1. Piroplasms of B. sp. 1 were observe d in peripheral blood of the calf which was infested with the parasite -infected larvae. Based on the transmissibility of the parasite with v ector ticks, this parasite was suggested to be a variety of B. ovata. Thus, we propose a new variety name for B. sp. 1 as B. ovata oshimensi s n. var.