Bublikova L I, Tamarina N A
Med Parazitol (Mosk). 1997 Apr-Jun(2):30-2.
The study was undertaken to define the limits of a possible season of malaria transmission by the prevalent species of Anopheles mosquitoes in the Chu valley situated in the north of the republic where large inhabited areas, including its capital Bishkek, concentrated. The beginning of the malaria transmission season was considered to be associated with the actual emergence of potentially dangerous females whose physiological age at this time was equal or longer than the time required for sporogony to be completed in their bodies. The female physiological age was defined by the intraovarian oil injection method developed by Lange, Chyong Kuang Khok, Sokolova. The duration of sporogenous cycles was determined by the Oganov-Raevskiĭ method and that of gonotrophic cycles was estimated by the Shlënova method. The potentially hazardous females were calculated from the number of gonotrophic cycles which fit the cycle of sporogony in terms of time. The first potentially dangerous An. claviger females were found in Bishkek in the mid-June of 1993. Their maximum was noted in the first half of July. Potentially dangerous females disappeared in the second ten days of September. The similar studies were made for An. messeae on the foothills of the Chu valley where the highest size of the mosquitoes of this species was observed. Potentially dangerous An. messeae females were found from the third ten days of June to the second ten days of September. The findings suggest that the classical role of An. messeae retains in the possible transmission of malaria in the Chu valley of the Kirghiz Republic. However, An. claviger has gained no less importance. These prevalent species can transmit Plasmodium vivax on the territory under study during 2.5 months from late June to mid-September.
本研究旨在确定吉尔吉斯共和国北部楚河谷地区主要按蚊种类传播疟疾的可能季节界限，该地区包括首都比什凯克在内的大片聚居区较为集中。疟疾传播季节的开始被认为与具有潜在危险性的雌蚊实际出现有关，此时其生理年龄等于或长于疟原虫在其体内完成孢子增殖所需的时间。雌蚊生理年龄通过兰格、Chyong Kuang Khok、索科洛娃开发的卵巢内注射油法确定。孢子增殖周期的持续时间通过奥加诺夫 - 拉耶夫斯基方法测定，而生殖营养周期的持续时间通过什列诺娃方法估算。根据与孢子增殖周期在时间上相符的生殖营养周期数量计算具有潜在危险性的雌蚊数量。1993年6月中旬在比什凯克发现了首批具有潜在危险性的克劳氏按蚊雌蚊。7月上半月数量达到最多。9月下旬潜在危险性雌蚊消失。对楚河谷山麓地区的麦塞按蚊进行了类似研究，该地区观察到该蚊种的最大数量。6月下旬至9月下旬发现了具有潜在危险性的麦塞按蚊雌蚊。研究结果表明，麦塞按蚊在吉尔吉斯共和国楚河谷疟疾可能传播中仍保留其经典作用。然而，克劳氏按蚊也具有同样重要的地位。在研究区域内，这些主要蚊种可在6月下旬至9月中旬的2.5个月内传播间日疟原虫。
