Some Ecological Observations of Rana ishikawae, a Rare Frog Endemic to the Ryukyu Islands

Some Ecological Observations of Rana ishikawae, a Rare Frog Endemic to the Ryukyu Islands

Morphological characters and breeding habits of Rana ishikawae are observed in some detail in Okinawahonto and Amamioshima. During the breeding season, a male frog has stayed in a hole along waters. He invites different females by calling to the same hole, and spawnings are made by these females at...

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Bibliographic Details
Published in:Proceedings of the Japan Academy, Series B Vol. 55; no. 5; pp. 233 - 237
Main Authors: UTSUNOMIYA, Yasuaki, UTSUNOMIYA, Taeko, KATSUREN, Seiki
Format: Journal Article
Language:English
Published: The Japan Academy 1979
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Summary:Morphological characters and breeding habits of Rana ishikawae are observed in some detail in Okinawahonto and Amamioshima. During the breeding season, a male frog has stayed in a hole along waters. He invites different females by calling to the same hole, and spawnings are made by these females at different times. The breeding season seems to be taken place in the winter season in Okinawahonto, while from spring to early summer in Amamioshima. Well-developed and young larvae are observed in summer in Okinawahonto, while in winter in Amamioshima. Well-developed larvae are obtained in streams of both islands through the year. A considerable morphological difference is present on the back spot and tubercles between the frogs from Okinawahonto and Amamioshima.
ISSN:0386-2208
1349-2896
DOI:10.2183/pjab.55.233