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Korean J Parasitol > Volume 33(1):1995 > Article

Original Article
Korean J Parasitol. 1995 Mar;33(1):19-26. English.
Published online Mar 20, 1995.  http://dx.doi.org/10.3347/kjp.1995.33.1.19
Copyright © 1995 by The Korean Society for Parasitology
Seasonal prevalence and behaviour of Aedes togoi
Jong-Soo Lee,*1 and Han-Kee Hong2
1Division of Parasitology, National Institute of Health, Seoul 122-020, Korea.
2Department of Agrobiology, Dongguk University, Seoul 100-715, Korea.
Received December 29, 1994; Accepted February 11, 1995.

Abstract

Ecological studies of Aedes togoi, the vector of malayan filariasis, were carried out at Tolsando, Yosu and Sokcho area in 1991. The adult population of Aedes togoi was continuously appeared from the first week of April to the end of November showing the highest density in July. The larvae of Aedes togoi were found at rock pools from March to December in Sokcho area and the density was highest in July and August, whereas in the southern coastal area (Yosu), the larvae were found throughout the year and the density was the highest in June. The rate of larvae inhabited below 0.5% salinity was 45.7% in Sokcho and 51.7% in Yosu. The feeding activity of Aedes togoi was nocturnal, with the peak period of 01:00-03:00 hours. Indoor feeding activities were slightly higher than outdoors showing the biting ratio of 1:0.8 (indoor: outdoor). The average number of Aedes togoi attracted to CO2 gas was 8.5 whereas 117 Anopheles sinensis was attracted. The result indicates that CO2 is not an effective attractant for host seeking of Aedes togoi compared to Anopheles sinensis. The most common place was bedroom with 54.5% of total collections and next to stock place (18.2%), floor (9.1%) and kitchen (9.1%).

Tables


Table 1
Seasonal prevalence of mosquito adults collected by light trap in Tolsando, Yosu in 1991 (per trap/night)


Table 2
Larval density of Aedes togoi in rock pools by using meshed-sinking quadrat (100 cm2) collection method at Sokcho in 1991


Table 3
Larval density of Aedes togoi in rock pools by suing meshed-sinking quardrat (100 cm2) collection method at Tolsando in Yosu, 1991


Table 4
Frequency distribution of salinity of Aedes togoi larvae and pupae in Sokcho and Yosu in 1991


Table 5
Human bait collection Aedes togoi at Tolsando, Yosu in July and August of 1990-1991 (man/hour)


Table 6
Number of mosquitoes attracted by dry-ice at Tolsando, Yosu in August, 1991


Table 7
Result of daytime resting mosquito collections at Tolsando, Yosu in August, 1992 (average number of mosquitoes caught from 36 houses)

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