ニホンヒキガエルBufo japonicus japonicusの自然誌的研究 : XIII.種内個体間の諸関係
1987 年 37 巻 2 号 p. 75-79
詳細
1987 年 37 巻 2 号 p. 75-79
No territoriality nor dominance hierarchy was evident in the Japanese toad, Bufo japonicus japonicus. Newly metamorphosed toads searched for food actively during summer, whereas subadult and adult toads were inactive during this season. Young toads inhabited the vicinity of the breeding pond, but adult toads had a tendency to leave the pond and to establish their home ranges at the peripheral zone of the distribution area. Adult males and females mated during early spring, at which young toads were still present in their hibernation sites. These results seem to provide evidence for some isolating mechanisms between young and adult toad, for large toad sometimes eat small toad.
