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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

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Title: 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
Other Titles: Development of female reproductive organs during sexual maturation in the Japanese common squid Todarodes pacificus
Authors: 池田, 譲1 Browse this author
桜井, 泰憲2 Browse this author →KAKEN DB
島崎, 健二3 Browse this author
Authors(alt): Ikeda, Yuzuru1
Sakurai, Yasunori2
Shimazaki, Kenji3
Issue Date: 1991
Publisher: 日本水産学会
Journal Title: 日本水産学会誌
Journal Title(alt): Bulletin of the Japanese Society of Scientific Fisheries
Volume: 57
Issue: 12
Start Page: 2243
End Page: 2247
Publisher DOI: 10.2331/suisan.57.2243
Abstract: 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
© 1991 The Japanese Society of Fisheries Science
Type: article
URI: http://hdl.handle.net/2115/35536
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 桜井 泰憲

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