. Brigham Young University science bulletin. Biology -- Periodicals. 148 BiuGHAM Young University Science Bulletin in the pasture. If cows were pastured during tile davtinie, tlien tlie ticks dropped during the daytime, hut if cows were pastured during the night, then the ticks dropped at night. Disease Relationship: Ixodes persulcaius transmits the virus of spring-summer encephalitis to man in the USSR. Ponierantzev (1950) states that the causal agent ot cattle piroplasniosis can he transmitted experimentally. Saito ( 1962b) studied the trans- mission of PasteurelUi tularensis by /. perstilca
. Brigham Young University science bulletin. Biology -- Periodicals. 148 BiuGHAM Young University Science Bulletin in the pasture. If cows were pastured during tile davtinie, tlien tlie ticks dropped during the daytime, hut if cows were pastured during the night, then the ticks dropped at night. Disease Relationship: Ixodes persulcaius transmits the virus of spring-summer encephalitis to man in the USSR. Ponierantzev (1950) states that the causal agent ot cattle piroplasniosis can he transmitted experimentally. Saito ( 1962b) studied the trans- mission of PasteurelUi tularensis by /. perstilca- tus and found that adult female specimens of persulcatus, collected from wild hares which had died of tularemia, were infected with P. tularen- sis and that nymphs and larvae that were ex- perimentally infected with the causal agent of tularemia transmitted it from host to host. He also demonstrated transstadial transmission, both from larvae to nymphs and from nymphs to adults, but he was unable to demonstrate trans- ovarian transmission. The role of /. persulcatus as a vector of P. tukirensis from hares to man has not been established. Ixodes philipi Keirans and Kohls (Fig. 103) Ixodes philipi Keirans and Kohls, 1970:725-72e, Fig. 1-8. : The description of this species was based on two partially replete females collected by H. E. McClure in 1951 at Sanganjima, Iwate Prefec- ture, Japan. Keirans and Kohls (1970) (juoted from a personal communication from Dr. Mc- Clure in which he described the collecting area as ". . high islands of volcanic ash covered with pin(> and deciduous forests. In the loose soil beneath the trees the Streaked Sheanvater, Pttffimis leucomelas, and the Madeiran Storm Petrel, Oceanodroma castro, dig nesting tunnels about arm-length ; Ticks were collected during an avian blood survev but it isn't certain which of the two species of birds was the host from which the ticks were collected. Japanese ornithologists now refer to t
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