米子市に於ける蚊の季節的消長 (昭和 29 年〜31 年の調査)

概要

論文の詳細を見る
Successive studies on the seasonal prevalences of mosquitoes were carried out during the period of three years from 1954 to 1956 at two or four places in Yonago City using light trap and at a place using exhauster in 1954 especially, and following results were obtained. 1. Number of mosquitoes collected were 4 genera, 12 species, 8, 793 individuals in 1954, 4 genera, 13 species, 16, 514 individuals in 1955, and 3 genera, 11 species, 4, 684 individuals in 1956 respectively. Culex pipiens, C. tritaeniorhynchus, and Anopheles sinensis occupied the great majority of the specimens (approximately 96 to 98% each year). C. pipiens decreased number of specimens collected from 1954 to 1956, i. e. 75, 56, and 19% respectively, while C. tritaeniorhynchus increased percentage gradually (11, 28, and 75%) and became top of the species in 1956. 2. The tendency of decreasing number of individuals was observed in 1956 than 1955, especially C. pipiens decreased remarkably. And number of C. tritaeniorhynchus collected at Nishi Machi also decreased to approximately half of individuals in 1955. These phenomena may be caused by artificial changes of habitats, such as spray of insecticides, etc. 3. The male of C. pipiens collected always more than the female and A. sinensis showed almost similar tendency, but no such fact was observed in C. tritaeniorhynchus. 4. The seasonal prevalences of the species mentioned above were as follows : C. pipiens : First collection of female and male were in the middle of March and at the beginning of May respectively and ended in the middle or the end of November. The peak of population curve was observed from the middle of June to the beginning of July. C. tritaeniorhynchus : Appeared in the middle of June or at the beginning of July, came to the peak at the end of July or the beginning of August, and ended at the end of October. A. sinensis : Appeared at the beginning or in the middle of June, became peak in the middle of July to the end of August, and ended at the end of October. 5. The patients of Japanese B encephalitis appeared 10 to 30 days after the peak of C. tritaeniorhynchus.
日本衛生動物学会の論文
1958-04-10

米子市に於ける蚊の季節的消長 (昭和 29 年〜31 年の調査)

スポンサーリンク

概要

著者

関連論文

スポンサーリンク