ヒメフンバエの生態に関する研究

I. 発育に及ぼす温度の影響

抄録

Larvae of the yellow dung fly, Scatophaga stercoraria L. were reared in a density of 30 individuals per 100g cow dung at different constant temperatures between 10 and 34°C. The rate of emergence and the width of their heads were large consistently at temperature lower than 22°C. These values, howerer, decreased progressively with the rise in temperature beyond this limit.
Development during larval and pupal stages was accelerated by higher tempe-ratureup to 26°C, but no further acceleration was observed at 30°C presumably due to the suppressive effect of the high temperature. Developmental zero for male and female was estimated to be 3.3 and 2.8°C, and total effective temper-ature to be 371.7 and 363.0 day-degrees, respectively. The results suggested that the yellow dung fly may be better adapted to cooler climates.