Studies on the Classification and the Living Conditions of Drosophilidae in Korea(3)-Seasonal Changes and Difference in Distribution by Altitude in Drosophila Population-

한국산초파리의 분류와 생태(3)-고도 및 계절에 따른 초파리 집단의 변동-

The seasonal and altitudinal changes in distribtuion of three selected species of wild Drosophila populations ; D.(S.) auraria , D.(D,) transversa and D.(D.) lacertosa growing at Mt. Sori in Kwang-nung (Kyung-ki province, Korea) were surveyed from April to November in 1959. The field of observations ranged in altitude from 150 to 450 meters. Each of selected species were found in different altitudes with no significant level. D.(S.) auraria were found with numerically dominance in April and were found in June with less superiority. D.(D.) transversa showed their highest peak in numerically in May and after soon they decreased, in August they made the lower peak again. Author could drow in June the highest peak shown D.(D.) lacertosa's distribution and then the line was down to November smoothly.