Biggs H C, Langenhoven J W
Onderstepoort J Vet Res. 1984 Sep;51(3):175-82.
The seasonal prevalence of ixodid ticks was determined over a 2-year period by the weekly removal from at least 5 cattle of all adult ticks and the immature stages of Rhipicephalus evertsi mimeticus in the ears. The highest mean weekly burden was 286,6 adult ticks/cow/week in March 1979, and the lowest 6,9 adult ticks/cow/week in July 1979. Virtually no tick control is practised in this area. Rhipicephalus capensis group adults peaked in the summer from October to March/April. Rhipicephalus evertsi mimeticus adults were present throughout the year, though in slightly greater numbers from November to May. Immature stages of this species in the ears showed a peak in February/March in addition to variably-timed high peaks in the first 2 winters. Hyalomma marginatum rufipes and Hyalomma truncatum peaked from December to March. Very small numbers of Boophilus decoloratus and Rhipicephalus oculatus were recovered. Tick burdens of all major species differed significantly in the 2 study years.
在两年时间里，通过每周从至少5头牛的耳部清除所有成年蜱以及微小扇头蜱的未成熟阶段，来确定硬蜱的季节性流行情况。1979年3月，最高平均每周负担为286.6只成年蜱/头/周，1979年7月最低为6.9只成年蜱/头/周。该地区几乎没有实施蜱虫控制措施。卡氏扇头蜱种群的成年蜱在10月至次年3月/4月的夏季达到高峰。微小扇头蜱的成年蜱全年都有，不过11月至5月数量略多。该物种在耳部的未成熟阶段除了在前两个冬季出现时间不定的高峰外，在2月/3月也出现一个高峰。边缘璃眼蜱和截形璃眼蜱在12月至3月达到高峰。仅发现极少量的无色牛蜱和眼斑扇头蜱。在两个研究年份中，所有主要蜱种的蜱负担存在显著差异。
