Korotkov Iu S, Kislenko G S
Parazitologiia. 1991 Nov-Dec;25(6):494-503.
Methods of quantitative estimation of critical photoperiod and critical date of entering the diapause in ixodids have been worked out. S-shaped dependence of the number of diapausing larvae and nymphs of Ixodes persulcatus on their feeding periods has been shown. It has been established that in Central Udmurtia the average critical date of entering the diapause in 50% of satiated larvae and nymphs falls at the 18th and 29th of June, respectively, with the light day length of 17 hr 10 min and 16 hr 22 min.
已制定出硬蜱临界光周期和进入滞育临界日期的定量估计方法。已表明全沟硬蜱滞育幼虫和若虫数量与其取食期呈S形依赖关系。已确定在中乌德穆尔特地区，50%饱血幼虫和若虫进入滞育的平均临界日期分别为6月18日和29日，对应的光照时长分别为17小时10分钟和16小时22分钟。
