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URIhttp://ypir.lib.yamaguchi-u.ac.jp/fu/metadata/1320
タイトル明暗環境下におけるケンサキイカUroteuthis edulisの網膜運動反応
タイトルヨミメイアン カンキョウカ ニオケル ケンサキイカ Uroteuthis edulis ノ モウマク ウンドウ ハンノウ
タイトル別表記Retinomotor response of swordtip squid Uroteuthis edulis under light and dark condition
作成者梶川, 和武
安本, 信哉
作成者ヨミカジカワ, ヨリタケ
ヤスモト, シンヤ
作成者別表記Kajikawa, Yoritake
Yasumoto, Shinya
著者キーワードretinomotor response
swordtip squid
light and dark adaptation
black pigment
Fishing technology
資料タイプtext
ファイル形式application/pdf
内容記述(抄録等)The objective of this study was to gain histological insights into the retinomotor response of swordtip squid (Uroteuthis edulis) to determine the state of retinal adaptation under fishing light. In this study, the retinomotor response of swordtip squid under a light condition and dark condition was examined histologically. Squid under the light condition were irradiated by a halogen lamp from above the experimental tank for 2 hours. On the other hand, squid under the dark condition were in an experimental tank that was closed and completely covered with a blackout curtain for 2 hours. For both conditions, the thicknesses from the limiting membrane to the retinal surface and the black pigment layer were measured from tissue specimens, and the ratio (%) was calculated, which was used as an index of retinal adaptability. Results showed the index of retinal adaptation for the dark-adapted condition was 33.3% for a mantle length of 223 mm and 25% for a mantle length of 164 mm. On the other hand, the index of retinal adaptation for the light-adapted condition of two tested individuals with mantle lengths of 200 mm and 218 mm was 100% for both. The results suggested that the retinal adaptation state can be judged by observing the layer of black pigment in the retina as in the case of Neon flying squid and Japanese flying squid, which are species of Oegopsida.
出版者水産大学校
出版者ヨミスイサン ダイガッコウ
Nii資料タイプ紀要論文
本文言語jpn
ISSN0370-9361
掲載誌名水産大学校研究報告
69
4
開始ページ89
終了ページ92
発行日2021-03
著者版/出版社版出版社版
リポジトリIDNF0069402
ファイル69-4-89-92.pdf ( 683.1KB ) 公開日 2021-06-28
査読の有無査読あり
地域区分水産大学校