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Age and growth of pointhead flounder Hippoglossoides pinetorum in Ishikari Bay, Hokkaido

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/38559

Title: Age and growth of pointhead flounder Hippoglossoides pinetorum in Ishikari Bay, Hokkaido
Authors: Tominaga, Osamu Browse this author
Inoguchi, Ken Browse this author
Watanabe, Yasuhiro Browse this author
Yamaguchi, Motohito Browse this author
Nakatani, Toshikuni Browse this author →KAKEN DB
Takahashi, Toyomi Browse this author
Keywords: Hippoglossoides pinetorum
age
growth
otolith
Issue Date: 1996
Publisher: Japanese Society of Scientific Fisheries
Journal Title: Fisheries Science
Volume: 62
Issue: 2
Start Page: 215
End Page: 221
Publisher DOI: 10.2331/fishsci.62.215
Abstract: Pointhead flounder, Hippoglossides pinetorum, taken by commercial gillnets and an experimental beam trawl net in Ishikari Bay, Hokkaido from September 1991 to July 1993 were aged using polished otoliths (saggitae). Ages were validated by the monthly change in the percentage of otolith with translucent edge and marginal increments; a single opaque and translucent zone was formed annually. The regression method and Lee (Fraser-Lee)'s method were used to estimate the back-calculated length. Growth of pointhead flounder was expressed as Lt=251.9(1-exp^[-0.261(t-0.142)]) for males and Lt=315.1(1-exp^[-0.219(t-0.200)]) for females using back-calculated lengths by the regression method and Lt=251.6(1-exp^[-0.263(t-0.142)]) for males and Lt=333.0(1-exp^[-0.204(t-0.186)]) for females using back-calculated lengths by Lee's method, where Lt is the standard length (mm) at estimated age t. Small differences in the theoretical lengths of older female fish were found between the two methods. However, the theoretical standard lengths predicted by the two methods were very similar at most estimated ages and indicated the approximate actual length at each age.
Rights: © 1996 公益社団法人日本水産学会
© 1996 The Japanese Society of Fisheries Science
Type: article
URI: http://hdl.handle.net/2115/38559
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: 高橋 豊美

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