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      • 地域的差異에 의한 초파리分布와 生態에 關한 硏究

        李澤俊,秋鍾吉,羅燾業,姜景來 중앙대학교 기술과학연구소 1975 기술과학연구소 논문집 Vol.2 No.-

        Drosophilid flies were collected by the methods of fruit trap and sweeping net from 1969 through 1975 at four different mountains of Korean panisular. 1) Eight genera including 61 species of Drosophilidae were recognized in these survey. During the period of collection, Drosophilid flies were recognized at each mountain as follows; 4 genera, 31 species and 10417 specimens at Mt. Hanla. 4 genera, 22 species and 6537 specimens at Mt. Palkong. 7 genera, 24 species and 4677 specimens at Mt. Unak. 7 genera, 53 species and 9492 specimens at Mt. Sulak. Newly recorded species of Drosophilidae from the results of these survey were as follows; 3 genera, 5 species and 275 specimens at Mt. Hanla. 3 genera, 9 species and 1220 specimens at Mt. Palkong. 7 genera, 24 species and 4677 specimens at Mt. Unak. 3 genera, 8 species and 312 specimens at Mt. Sulak. 1) Altitudinal distribution of Drosophilid flies were analysed at two areas of Mts. Sulak and Hanla. The number of flies decreased at higher altitude, and there were very scarce frequency over 1500m in altitude. However, most flies of S. graminum and D. bifasciata were collected at higher altitude in the season of mid-summer. On the contrary, some species of Drosophilidae, such as D. melanogaster, D. bizonata, D. immigrans and D. lutea showed 1:1 ratio in their sexes. From the results of these survey, the frequency of male flies of D. suzukii express higher than that of opposite sex at low altitude, but ratio showed the same at high in altitude. Some species of Drosophilidae (D. angularis, D. bizonata) collected at field mushroom were not recognized in their 1:1 sex ratio measured from the Chi-spuere fomular. Reason to the factors of these unbalanced ratio of sexes in the natural fields were not known.

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