ウスバシロチョウの翅長と標高の関係  [in Japanese] The Correlation of Wing length and Altitude in Japanese Clouded Apollo, Parnassius glacialis (Lepidoptera : Papilionidae)  [in Japanese]

1. 岐阜県周辺20地点においてウスバシロチョウの前翅長と標高の関係を調査した結果, 有意な負の相関を得た(r=-0.807, p<0.01).その回帰式はY=-0.005X+37.3(Y : 前翅長, X : 標高)であった.2. 岐阜県白鳥町石徹白において6ヶ年にわたり前翅長の変動を調査した結果, ANOVAにより各年の平均値はすべて等しいと判断された.3. したがって, 本種の場合, 前翅長は標高の上昇に対応して小型化するが, 個体群内においては安定度が高いと推測された.

In the Papilionid butterfly, Parnassius glacialis BUTLER, the correlation of fore-wing length to altitude was studied. The male butterflies were collected at 20 places in Gifu prefecture, central Japan, in 1991. The wing length showed a significant negative correlation with altitude (r=-0.807, p<0.01, n=20), and the regression equation was y=-0.005x+37.3 (y : Fore-wing length, X : Altitude). Annual change of fore-wing length of the male was also studied for 6 years in Itoshiro, Shirotori town Gifu Prefecture. However, the means of each year were not significantly different (ANOVA, P=0.713).