爬虫両棲類学会報
Online ISSN : 1884-930X
Print ISSN : 1345-5826
ISSN-L : 1345-5826
横浜市北部の丘陵におけるニホンアカガエルの食性
伊原 禎雄半田 由香里原田 洋
著者情報
ジャーナル フリー

2007 年 2007 巻 2 号 p. 111-119

詳細
抄録

We surveyed stomach contents of Rana japonica on the forest floor of a hill in Northern Yokohama, Japan. The frogs preyed mainly on macro soil animals and insects throughout the active season. A difference in prey items was found between adult and juvenile frogs; i.e., adult frogs preyed on Orthoptera and Lepidoptera larvae, but juvenile frogs ate ants and spiders. As for food resources in the research site, the adult frogs showed selective preference for Lepidoptera larvae and less preference for Diptera larvae, ants and Ispoda, whereas the juvenile frogs showed preference for spiders and less preference for Diptera larvae, collembolans, and mites. These results indicate that the factors for choosing prey items were not only gape size of the frogs and the body size of prey items but also selectivity and evasiveness of the prey

著者関連情報
© 日本爬虫両棲類学会
前の記事 次の記事
feedback
Top