1999 Volume 50 Issue 2 Pages 147-149
The seasonal activities of Ixodes monospinosus and Haemaphysalis kitaokai adults were analyzed by using the mark-recapture method at Mt. Kumakura (a hiking trail about 1km long) in the Chichibu Mountains of Saitama Prefecture. A total of 148 I. monospinosus and 1,013 H. kitaokai adults were marked and released in spring (April to June, 1997 and April to May, 1998) and in autumn (September to November, 1997 and October to November, 1998). None of the I. monospinosus and H. kitaokai adults captured in spring were recaptured in autumn. However, a part of the adults of both species captured in autumn were recaptured the next spring. These results suggest that in both I. monospinosus and H. kitaokai, the adults which appeared during spring and autumn are of different generations. The adults of both species appear to begin their activity in autumn and to complete it in the next spring or summer.
