Determination of physiological age in anophelines and of age distribution in anopheline populations in the USSR.
Determination of physiological age in anophelines and of age distribution in anopheline populations in the USSR.
复制标题
苏联按蚊生理年龄的测定和按蚊种群年龄分布。
DOI：
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发表时间：
1959
影响因子：
11.1
通讯作者：
V. Polovodova
中科院分区：
文献类型：
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作者：
W. N. Beklemishev;T. Detinova;V. Polovodova
本文描述了一种可以准确测定雌性疟蚊生理年龄的技术，即雌性疟蚊所经历的淋养循环次数。这项技术是基于每次卵泡成熟和产卵后卵巢中留下的扩张计数。解剖发现的扩张数通常与淋养循环的数量完全对应。通过对大量雌按蚊的解剖，可以确定蚊虫种群的年龄构成及其在传播季节中的变化，从而阐明种群生物学的一些问题。了解了蚊虫掩蔽处的温度，就有可能确定与疟疾寄生虫的单孢子虫周期相吻合的淋养循环次数，从而确定雌性唾液腺可能含有孢子虫的生理年龄。解剖还可以确定在季节的不同时期有潜在危险的雌性的比例。由此获得的数据用于绘制一个地方的流行病学图和评价抗疟疾措施的有效性。本文还介绍了一种通过检查卵巢气管来区分已产和未产雌按蚊的简单方法。
A technique is described whereby it is possible to make an accurate determination of the physiological age of anopheline females, i.e., the number of gonotrophic cycles through which the female has passed. This technique is based on counts of the dilatations left in the ovarioles subsequent to each maturation of follicles and oviposition. The number of dilatations found on dissection usually corresponds exactly to the number of gonotrophic cycles.By dissection of a large number of female anophelines the age composition of the mosquito population and any changes of it in the course of the transmission season may be determined, and a number of problems of population biology may be elucidated. With a knowledge of the temperature in mosquito shelters, it is possible to establish the number of gonotrophic cycles coinciding with a single sporogonic cycle of the malaria parasite and thus the physiological age at which the salivary glands of females may contain sporozoites. Dissection also makes it possible to determine the proportion of potentially dangerous females at various periods of the season. The data thus obtained are used in drawing up an epidemiological picture of a locality and in evaluating the effectiveness of anti-malaria measures.A simple technique is also described for distinguishing between parous and nulliparous female anophelines by examination of the tracheoles of the ovaries.