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Korean J Parasitol > Volume 24(1):1986 > Article

Original Article
Korean J Parasitol. 1986 Jun;24(1):15-24. English.
Published online Mar 20, 1994.  http://dx.doi.org/10.3347/kjp.1986.24.1.15
Copyright © 1986 by The Korean Society for Parasitology
Epidemiological studies on malayan filariasis in an inland area in Kyungpook, Korea 3. Ecological survey of vector mosquitoes of Brugia malayi
Hewng Il Lee,Dong Wik Choi,Doo Hyun Baik,** and Chong Yoon Joo**
Department of Parasitology, Kyungpook National University School of Medicine, Korea.
**Department of Parasitology, Keimyung University School of Medicine, Taegu, Korea.

The species composition, population density, and seasonal prevalence of vector mosquitoes in an inland area of Kyungpook province were studied, based on light trap and human bait trap collections, and the recent patterns of infestation for infective larvae of Brugia malayi in these vector hosts were investigated from May to November in 1985. Nine species in four genera of mosquitoes were collected by light trap, human bait trap, and/or by nets. Anopheles sinensis Wiedemann was the most abundant species collected by light traps during this year. Culex tritaeniorhychus Giles was the second abundant species, and Aedes vexans nipponii(Theobald) ranked third in total abundance. The earlist time when A. sinensis were found was the middle of May. At that time the temperature ranged from 14.3° to 22.8℃ and the humidity 53-90 per cent. The month of highest average nightly catch was July, when the temperature was betweeen 21.5° and 30.6℃ and the humidity 72-91 per cent. The peak time of biting activity of mosquitoes was different in each month, i.e. between 22:00-23:00 in July, and 20:00-21:00 hours in September, when the temperature was between 24.3° and 26.5℃ and the humidity 73-88 per cent in the field. While infective larvae of B. malayi were reported to have been found in one species of mosquito in 1975, no larvae were found in any species collected in this survey.


Fig. 1
Surveyed area in Kyungpook Province, Korea.

Fig. 2
Fortnightly mean, maximum and minimum temperature, relative humidity and total rain fall (cm) reported by regional Meteorological Center in Taegu, Korea during 1985.

Fig. 3
Seasonal changes in the number of Anopheles sinensis collected by light traps in Kyungpook Province, Korea, 1985.


Table 1
Relative abundance of mosquitoes collected by light traps at Shincheon village in 1985

Table 2
Monthly variation in the numbers of Anopheles sinensis caught by light traps in an inland area of Kyungpook Province (1985), together with meteorological data

Table 3
The results of overnight Anopheles sinensis collections by human bait traps in two nights, July 17~18 and September 7~8, 1985 in Anjung myun, Kyungpook Province, Korea

Table 4
Comparison of demonstration rates from infective larvae of Brugia malayi in vector mosquitoes collected in 1975 and 1985

Table 5
Age composition of Anopheles sinensis collected in 1985 as determined by the number of follicular relics

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