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Seasonal Prevalence of Mosquitoes Collected with Light Trap - At a Pig Shed in the Vicinity of Daegu City, Korea-

ѱȸ 1984 27 2ȣ p.117 ~ 125
ڼռ,
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ڼռ ( Park Sohn-Suck ) - 뱸б бк

Abstract

1. 14 ʰ ͮ ϴ ʫ 쿡 ڥ Ͽ ׾ ⦴ 1981Ҵ 12,942, 1982Ҵ 118,061μ 1982Ҵ Ҵ 9.1 1981Ҵ 77%, 23%, 1982Ҵ 96%, 4%. 2. ڥ ׾ Culex (Culex) pipiens pallens, C. (C.) tritaeniorhynchus summoro, C. (C.) vagans, C. (C.) orientalis, C. (C.) bitaeniorhynchus, Aedes (Aedimorphus) vexans nipponii, Anopheles (Anopheles) sinensis 7̾. 3. 7 ѷ δ Culex (Culex) pipiens pallens, C. (C.) tritaeniorhynchus summoro, Anopheles (Anopheles) sinensis 3μ ֪ϸ 1981Ҵ Culex (Culex) pipiens pallens ׾ 44.9% ( : 0.85), Anopeles (Anopheles) sinensis 42.9% (0.05), Culex (Culex) tritaeniorhynchus summor 12.1% (0.01) 1982Ҵ ߷ Culex (Culex) tritaeniorhynchus summoro 70.4% (0.00), Anopheles (Anopheles) sinensis 25.2% (0.05), Culex (Culex) pipiens pallens 4.4% (2.19) Ÿ. 4. ׾ ܬ ⦿ . 5 : 0.1% (1981Ҵ), 0.0% (1982Ҵ); 6 : 3.5%, 1.3%; 7 : 50.0%, 33.9%; 8 : 37.1%, 52.1%; 9 : 8.8%, 11.9%; 10 : 0.5%, 0.8%; 11 : 0.1%. 5. ׾ 1981Ҵ 1982Ҵ 5μ ϰ ʥ᧸ ̴ ٸ Ÿ. , 1981Ҵ 6 ù° ̰ 1982Ҵ Ҵ 3 մ 5 ° ο. 6. ۡ peak 1981Ҵ 7 ټ° ̰, 1982Ҵ 2ΰ 8 ° ο. 7. Culex (Culex) pipiens pallens ۡ peak 1981Ҵ 7 ټ° , 1982Ҵ 2 մ 7 ° ο. 8. Culex (Culex) tritaeniorhynchus summoro ۡ peak 1981Ҵ, 1982Ҵ 8 ° ο. 9. Anopheles (Anopheles) sinensis ۡ peak 1981Ҵ 7 ټ° , 1982Ҵ 2 մ 7 ° ο. 10. 3 peak ϸ Culex (Culex) pipiens pallens Anopheles (Anopheles) sinensis 1981Ҵ 1982Ҵ peakѢ Ͽ, Culex (Culex) tritaeniorhynchus summoro 2Ҵ 8ŵ° ο Ÿ.

Mosquitoes were collected with light trap at a pig shed in the vicinity of Daegu city from mid-April to the end of November in 1981 and 1982. A total of 12,942 and 118,061 individuals were collected in 1981 and 1982 respectively. The collection comprised 77% females and 23% males in 1981, and 96% females and 4% males in 1982. The catches were classified into following 7 species: Culex (Culex) pipiens pallens, C. (C.) tritaeniorhynchus summorosus, Anopheles (Anopheles) sinensis, C. (C.) vagans, C. (C.) oritntelis, C. (C.) bitaeniorhynchus, Aedes (Aedimorphus) vexans nipponii. The former three species showed distinct seasonal prevalence. Arranged in the descending order in size of the catches, in 1981, Culex (Culex) pipiens pallens was 44.9% of the total collection (at sex ratio of 0.85), Anopheles (Anopheles) sinensis 42.9% (0.05), Culex (Culex) tritaeniorhynchus summorosus 12.1% (0.00). On the contrary, Culex (Culex) tritaeniorhynchus summorosus 70.4% (0.00), Anopheles (Anopheles) sinensis 25.2% (0.05), Culex (Culex) pipiens pallens 4.4% (2.19) in 1982. The monthly percentages of collected mosquitoes to the total collection were 0.1% (in 1981) and 0.0% (in 1982) in May; 3.5%, 1.3% in June; 50.0%, 33.9% in July; 37.1%, in August; 8.8%, 11.9% in September; 0.5%, 0.8% in October and 0.0% in November. As for seasonal prevalence, mosquitoes appeared in May in both years and began to increase in number from the first week of June in 1981, but from the second week of May, ahead of three weeks in 1982. The highest peak time in 1982 was the second week of August, two weeks later than the fifth week of July in 1981. Culex (Culex) pipiens pallens showed the maximum activity for the fifth week of July in 1981, but for the third week of July, ahead of two weeks in 1982. Culex (Culex) tritaeniorhynchus reached the highest peak for the second week of August in both years. Anopheles (Anopheles) sinensis showed the maximum activity for the fifth week of July in 1981, but for the third week of July, two weeks earlier in 1982. The highest peak times of three main species were compared respectively as folows. Culex (Culex) pipiens pallens had the highest peak time in common with Anopheles (Anopheles) sinensis, Culex (Culex) tritaeniorhynchus summorosus showed the maximum activity for the second week of August in 1982.

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