Gowda N N, Vijayan V A
Department of Studies in Zoology, University of Mysore, Manasa Gangotri.
J Commun Dis. 1992 Mar;24(1):20-8.
Monthly indoor resting density, age distribution, survival rate and host-preference of Culex quinquefasciatus, a filariasis vector were studied from June 1988 to May 1989 in Mysore city. During this period, a total of 7522 adults were collected in 72 man-hour of search spreading to twelve spots covering the entire city. The annual per man-hour density observed was 104.5, being 76.8 for female and 24.3 for male. Nulliparous and parous (1-parous and 2-parous) mosquitoes were collected throughout the year while 3-parous and 4-parous mosquitoes were recorded during cold and rainy seasons only showing an increase in the number of gonotrophic cycles. Precipitin test of blood smears from the gut content of C. quinquefasciatus was done by taking 2536 mosquito blood smears. Of these, 94.1 per cent preferred human blood, 1.4 per cent bovine and 3 per cent avain. As the species evaluated is a major vector of filariasis, the present study on its resting density and the host preference will be helpful in vector monitoring in Mysore city. Various results on this species at Mysore have been discussed in the light of earlier studies conducted elsewhere.
1988年6月至1989年5月，在迈索尔市对丝虫病媒介致倦库蚊的月度室内栖息密度、年龄分布、存活率和宿主偏好进行了研究。在此期间，在覆盖全市的12个地点进行了72人时的搜索，共收集到7522只成虫。观察到的年人均小时密度为104.5，其中雌性为76.8，雄性为24.3。全年均采集到未产卵和已产卵（1次产卵和2次产卵）的蚊子，而3次产卵和4次产卵的蚊子仅在寒冷和雨季记录到，显示出生殖营养周期数量增加。通过对2536份致倦库蚊肠道内容物血涂片进行沉淀试验。其中，94.1%偏好人类血液，1.4%偏好牛血，3%偏好鸡血。由于所评估的物种是丝虫病的主要媒介，目前对其栖息密度和宿主偏好的研究将有助于迈索尔市的媒介监测。根据其他地方早期进行的研究，讨论了在迈索尔关于该物种获得的各种结果。
