SEASONALITY, BITING CYCLE AND PARITY OF THE YELLOW-FEVER VECTOR MOSQUITO HAEMAGOGUS-JANTHINOMYS IN TRINIDAD

被引：32

作者：

CHADEE, DD

TIKASINGH, ES

GANESH, R

机构：

[1] Insect Vector Control Division, Ministry of Health, St Joseph

[2] Caribbean Epidemiology Centre, CAREC, Port of Spain

来源：

MEDICAL AND VETERINARY ENTOMOLOGY | 1992年 / 6卷 / 02期

关键词：

HAEMAGOGUS-JANTHINOMYS; MOSQUITO DENSITY; MOSQUITO ACTIVITY CYCLE; PARITY RATES; YELLOW FEVER; TRINIDAD;

D O I：

10.1111/j.1365-2915.1992.tb00592.x

中图分类号：

Q96 [昆虫学];

学科分类号：

摘要：

1. Age composition, seasonal abundance and diel patterns of landing activity of the sylvan vector of yellow fever Haemagogus janthinomys Dyar were monitored weekly during 1981-82 by human collectors on the ground at Point Gourde in Chaguaramas Forest, 16 km west of Port of Spain, Trinidad. 2. Landing collections of Hg.janthinomys showed only diurnal activity, from 06.00 to 18.00 (sunrise to sunset, universal time), with a single peak of activity between 10.00 and 16.00 hours. 3. Densities of Hg.janthinomys were about 6 times greater during the wet season (May-November) than during the dry season (December-April); the annual Williams' mean landing rate on two collectors was 9.3 per day. 4. Monthly parous rates averaged 59% (range 0-86%) and some females were up to seven-pars. Retained eggs (range 1-21, mean 7.7/female) were found in the ovaries of 1.3% of landing females, all of which had stage I ovarian follicles for the next gonotrophic cycle. Hence blood-feeding is not inhibited by egg retention, which might promote transovarial transmission of virus. Implications of these findings are discussed in relation to yellow fever epidemiology.

引用

页码：143 / 148

页数：6

共 28 条

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