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

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概要

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• 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.

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著者

• Katsuren Seiki

  Habu Research Branch Station Okinawa Prefectural Institute For Public Health

• UTSUNOMIYA Yasuaki

  Department of Food Chemistry and Technology, Faculty of Fisheries and Animal Husbandry, Hiroshima University

• UTSUNOMIYA Taeko

  Department of Food Chemistry and Technology, Faculty of Fisheries and Animal Husbandry, Hiroshima University

関連論文

• Annual Survival Rate and Age Structure of Habu, Trimeresurus flavoviridis (Viperidae), on Minna Island, Japan: Estimation from Removal Trapping
• Habitat Segregation Observed in the Breeding of Five Frog Species Dwelling in a Mountain Stream of Okinawa Island
• Some Ecological Observations of Tylototriton andersoni, a Terrestrial Salamander Occurring in the Tokunoshima Island
• Some Ecological Observations of Rana ishikawae, a Rare Frog Endemic to the Ryukyu Islands

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