Razumova I V
Med Parazitol (Mosk). 1992 Jul-Aug(4):41-4.
A rapid anatomic method for the assessment of the physiologic age of ticks and their virtual age was used in studies of the age structure of a natural population of I. ricinus in the Moscow region. The anatomic method was found quite fit for the purpose. The findings evidence that the age structure of I. ricinus (active imago) population is heterogeneous with variously directed seasonal fluctuations. In spring the structure is the youngest (up to 60% of imagoes are in the second age, 8 months) and in the fall the females are mainly old, just starting to get younger (up to 90% are in the third and fourth ages, that is, aged a year). The structure is liable to changes with seasons and years. Geographic differences in the age structures were revealed: in the fall the Moscow region population is generally older than that of the St. Petersburg region. The anatomic method widens the potentialities of studying the age structure of the populations of tick-borne encephalitis vectors.
在对莫斯科地区蓖麻硬蜱自然种群年龄结构的研究中，采用了一种快速解剖方法来评估蜱的生理年龄及其虚拟年龄。结果发现该解剖方法非常适合此目的。研究结果表明，蓖麻硬蜱（活跃成虫）种群的年龄结构是异质的，具有不同方向的季节性波动。春季结构最年轻（高达60%的成虫处于第二个年龄阶段，8个月），秋季雌性主要为老龄，刚开始变年轻（高达90%处于第三和第四个年龄阶段，即一岁）。该结构会随季节和年份发生变化。揭示了年龄结构的地理差异：秋季莫斯科地区的种群总体上比圣彼得堡地区的更老龄。这种解剖方法拓宽了研究蜱传脑炎媒介种群年龄结构的潜力。
