关键词: 精子, 形态

Abstract: Abstract. The author bade some observations in the morphology of 8 spccies's sperms of ticks which are form 5 genera of 2 families in Ixodoidea, and made some comparision between families and among genera, and species. There is a main difference in the sperm between Ixodidae and Argasidae, the former is longer and thinner, the latter is thicker and larger, the latter is 1.5-6.9 times than the former in their bodies's length. The head and the tail of the sperm are clear in the two families except the species in the genus of Haemaphysalis.The sperms in different genera of Ixodidae are different in their length, H. longicornis in the genus of Haemaphysalis is the longest; I. persuleatus in the genus of Ixodes is the shortest. The sperms of different species of the same genus are different in their length such as the species in the genera of Dermaeentor and Haemaphysalis, the species of the former are smaller than the latter in the changeable range of their length, they are 0.033-0.057mm and 0.078-0,092mm respectively.