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中部北太平洋におけるサンマ Cololabis saira の耳石日周輪に基づく年齢と成長の推定

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Title: 中部北太平洋におけるサンマ Cololabis saira の耳石日周輪に基づく年齢と成長の推定
Other Titles: Esimation of the age and growth of Pacific saury Cololabis saira in the central North Pacific Ocean determined by otolith daily growth increments
Authors: 巣山, 哲1 Browse this author
桜井, 泰憲2 Browse this author →KAKEN DB
目黒, 敏美3 Browse this author →KAKEN DB
島崎, 健二4 Browse this author →KAKEN DB
Authors(alt): Suyama, Satoshi1
Sakurai, Yasunori2
Meguro, Toshimi3
Shimazaki, Kenji4
Issue Date: 1992
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: 58
Issue: 9
Start Page: 1607
End Page: 1614
Publisher DOI: 10.2331/suisan.58.1607
Abstract: The age, growth, and hatch dates of the Pacific saury Cololabis saira in the central North Pacific Ocean were estimated by analysing the microstructure of otoliths. Saury samples were collected by drift nets of several mesh sizes from July to August 1989. Growth increments of otoliths were counted under a scanning electron microscope. The sauries were divided into an almost tri-modal size distribution: a small-sized group (x¯: 210mm in knob length, range 200-240mm), a medium-sized group (x¯: 260mm, 240-295mm), and a large-sized group (x¯: 315mm, more than 295mm). Ages in days of sauries of the large-and medium-sized groups were estimated at 560-690 days and 310-450 days, respectively. Birthdate analyses of the sauries showed that the large- and medium-sized groups were estimated to have hatched from November 1987 to January 1988 and from May to August 1988, respectively. It is estimated that the life span of the saury in the central North Pacific area is about 2 years.
Rights: © 1992 公益社団法人日本水産学会
© 1992 The Japanese Society of Fisheries Science
Type: article
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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