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タイトル: 雌スルメイカの成熟にともなう卵巣および付属生殖器官の発達について
その他のタイトル: Development of female reproductive organs during sexual maturation in the Japanese common squid Todarodes pacificus
著者: 池田, 譲 著作を一覧する
桜井, 泰憲 著作を一覧する
島崎, 健二 著作を一覧する
発行日: 1991年
出版者: 日本水産学会
誌名: 日本水産学会誌 = Bulletin of the Japanese Society of Scientific Fisheries
巻: 57
号: 12
開始ページ: 2243
終了ページ: 2247
出版社 DOI: 10.2331/suisan.57.2243
抄録: Development of female reproductive organs during sexual maturation was studied for Japanese common squid caught from feeding and spawning grounds. The female maturity was divided into six stages based on the histological observation of ovary. The maturity was compared with the ovary somatic index (OSI: ovary weight as a percentage of body weight), oviduct somatic index (ODSI: oviduct weight as a percentage of body weight), gonad somatic index (ovary and oviduct weight as a percentage of body weight) and nidamental gland index (m: a ratio of nidamental gland length to mantle length). Results showed that the female maturational process consists of two phases and ovary and oviducts development are correlative with the nidamental gland development. In the first phase, ripe eggs are produced in the ovary with the rapid development of the nidamental gland and in the next phase, ripe eggs are transferred into the oviducts and stored there until spawning. The nidamental gland development is slower in the next phase, which suggests that the production of jelly material is started in this organ. It is possible to express the female maturity condition by GSI and m. These numerical values are GSI>1.0 and m>0.208 in yolk formation stage; GSI>2.6 and m>0.290 in the mature stage.
Rights: ©1991 公益社団法人日本水産学会 The Japanese Society of Fisheries Science
資料タイプ: article
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 桜井 泰憲


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