Razumova I V
Parazitologiia. 1982 May-Jun;16(3):209-18.
Hystological study of hungary imagos of Dermacentor pictus Herm. and other ticks of the genus Ixodes has made it possible to improve the method of physiological age determination of ixodids (Balashov, 1961). The following criteria for age determination are suggested: 1) size of sections of midgut appendages and their structural peculiarities, 2) height of midgut epithelium, 3) amount of haemoglobin inclusions in midgut cells, 4) amount of haematin in midgut cells, 5) cellular structure of midgut epithelium. Four main physiological ages can be determined by means of the above method (Razumova, 1977), which correspond to four degrees of nourishing according to Balashov (1961). By means of the method a stereotype of seasonal changes in the age structure of C. pictus population has been found out--a younger composition in spring and old one in autumn.
对匈牙利草原革蜱成虫以及其他硬蜱属蜱虫进行的组织学研究，使得改进硬蜱生理年龄测定方法成为可能（巴拉绍夫，1961年）。现提出以下年龄测定标准：1）中肠附属物切片的大小及其结构特点；2）中肠上皮的高度；3）中肠细胞中血红蛋白包涵体的数量；4）中肠细胞中血晶素的数量；5）中肠上皮的细胞结构。借助上述方法可确定四个主要生理年龄阶段（拉祖莫娃，1977年），这与巴拉绍夫（1961年）提出的四个营养程度相对应。通过该方法，已查明草原革蜱种群年龄结构的季节性变化模式——春季种群组成较年轻，秋季则较年老。
