Breaking-up of Hibernation and the Climatic Condition

Investigations of the Animal Phenology in Japan. V

Abstract

After the method of previous report in this magazine, we calculated the coefficient of correlation between the meteorological elements and the first date of breaking-up of hibernation for the bat (PI_??_PISTRELLUS ABRAMUS), snakes (MATRIX sp. & ELAPHE sp.), lizard (EUMECES sp.), and frogs (BUFO sp., HYLA sp. & RANA sp.) as shown in table 1, 2, 3, 4.
By our calculation, it was shown that the date of breaking-up of hibernation is marked by temperature. Therefore, the higher temperature will hasten the date of breaking-up of hibernations. The rainfall and the duration of sunshine are not so effective as temperature.