Embryonic Development of the Japanese Pond Turtle, Mauremys japonica (Testudines: Geoemydidae)
スポンサーリンク
概要
- 論文の詳細を見る
We describe morphological changes observed throughout the embryonic development of Mauremys japonica, a geoemydid species endemic to Japan. Eggs laid in captivity were incubated under two different temperature conditions, 26C and 30C. A total of 185 embryos and seven hatchlings were observed. We divided the whole embryonic development into 26 stages on the basis of morphological criteria previously proposed for Chelydra serpentina. Eggs of the turtle developed faster at 30C (taking 44-47 days for completion of the whole process) than at 26C (56-64 days). As has been reported previously, embryos of M. japonica developed to males after being incubated at 26C and to females at 30C, but without any visually recognizable differentiation in external morphology. Comparisons of embryos between M. japonica and three other testudinoid turtles revealed that the carapace of M. japonica started pigmentation at stage 18, i.e., earlier than the other three species by two stages.
- 日本爬虫両棲類学会の論文
著者
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ODA Sen-ichi
School of Agricultural Sciences, Nagoya University
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OKADA Yuki
Graduate School of Bio-Agricultural Sciences, Nagoya University
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YABE Takashi
School of Community Policy, Aichigakusen University
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Oda Sen-ichi
Graduate School Of Agricultural Sciences Nagoya Univ.
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Oda Sen-ichi
Department of Zoology, Okayama University Science
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ODA Sen-Ichi
Graduate School of Bio-Agricultural Sciences, Nagoya University
関連論文
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