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タイトルヨミ
ヒダリメ ノ ナイ ウシガエル
タイトル別表記
A Bull Frog Lacking in the Left Eye
ファイル
言語
日本語
著者
伊賀 哲郎
大氏 正己
本田 和子
内容記述(抄録等)
An adult bull frog,Rana catesbeiana,with abnormality of the eye was collected in a stream in the vicinity of Shimane University,Matsue city. The abnormality was characterized by complete absence of the left eye.The skin covering the orbital part on the eyeless side was continuous : no differentiation of the eyelids,cornea and the nictitating membrane was observed but the sikn possessed several holds near the posterior border of the eye orbit.Constituents of the eyeball and the eye muscle were not detectable under the skin covering the orbit. Anatomical observations revealed that the optic nerve on the eyeless side was conspicuously slender and transparent. The ill-developed optic nerve ended in a part of dura mater encephali and falied to reach the eye orbit.From histological observations,the optic nerve on the eyeless side was no more than a thin strand of loose fibrous tissue which extended a short way from the brain. The optic nerve on the side of the normal eye was normal.The brain was totally asymmetrical and especially the abnormality of the right optic lobe was remarkably observed. The embryological causes of the absence of the eye were discussed.
掲載誌名
島根大学文理学部紀要. 理学科編
5
開始ページ
116
終了ページ
122
ISSN
03709434
発行日
1972-03-10
NCID
AN0010806X
出版者
島根大学文理学部
出版者別表記
The Faculty of Literature and Science, Shimane University
資料タイプ
紀要論文
部局
島根大学
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