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  1. 139 大気海洋研究所
  2. 80 国際沿岸海洋研究センター
  3. Coastal Marine Science
  4. 36
  5. 1
  1. 0 資料タイプ別
  2. 30 紀要・部局刊行物
  3. Coastal Marine Science
  4. 36
  5. 1

Discriminant analysis of age to enable rapid estimation of 0-age Japanese eels Anguilla japonica

https://doi.org/10.15083/00040624
https://doi.org/10.15083/00040624
6848b4b7-e3f1-4531-a424-2ff2e814cbde
名前 / ファイル ライセンス アクション
CMS360103.pdf CMS360103.pdf (649.0 kB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2014-09-03
タイトル
タイトル Discriminant analysis of age to enable rapid estimation of 0-age Japanese eels Anguilla japonica
言語
言語 eng
キーワード
主題Scheme Other
主題 Anguilla japonica
キーワード
主題Scheme Other
主題 age
キーワード
主題Scheme Other
主題 discriminant analysis
キーワード
主題Scheme Other
主題 elvers
キーワード
主題Scheme Other
主題 growth
キーワード
主題Scheme Other
主題 otolith
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ departmental bulletin paper
ID登録
ID登録 10.15083/00040624
ID登録タイプ JaLC
著者 Fukuda, Nobuto

× Fukuda, Nobuto

WEKO 93327

Fukuda, Nobuto

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Aoyama, Jun

× Aoyama, Jun

WEKO 93328

Aoyama, Jun

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Miller, Michael J.

× Miller, Michael J.

WEKO 93329

Miller, Michael J.

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Suzuki, Yuzuru

× Suzuki, Yuzuru

WEKO 93330

Suzuki, Yuzuru

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Tsukamoto, Katsumi

× Tsukamoto, Katsumi

WEKO 93331

Tsukamoto, Katsumi

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著者所属
著者所属 Atmosphere and Ocean Research Institute, The University of Tokyo
著者所属
著者所属 Fisheries Laboratory, Graduate School of Agricultural and Life Sciences, The University of Tokyo
抄録
内容記述タイプ Abstract
内容記述 Anguillid eels are declining worldwide, so monitoring of their annual recruitment is important, but labor-intensive. Efficient ways to assess the abundance of their new recruits (0-age) each year would therefore be useful. Three discriminant analysis methods were evaluated for their ability to identify 0-age eels based on the total length (TL) of eels that included various age classes from 0-age to ≥2-age. Japanese eels were sampled every month from 2007 to 2009 in the Imagawa River, an inlet river of Hamana Lake in Japan, and the ages of 223 eels (50 to 250 mm TL) were determined using otolith annuli analyses. All three discriminant analyses could predict 0-age eels more accurately than 1-age and ≥2-age eels based on TL and catch date data. Canonical discriminant analysis appeared to be best for predicting 0-age eels, with all eels determined by otolith analysis as 0-age being correctly predicted (100%) in the leave-one-out cross validation method, although 2.4% of 1-age eels were wrongly predicted as 0-age. Studies of the recruitment patterns, habitat use, or ecology of 0-age recruits in a river system would be possible without additional aging efforts after a discriminant analysis function was created for a river system.
書誌情報 Coastal marine science

巻 36, 号 1, p. 19-25, 発行日 2013-12
ISSN
収録物識別子タイプ ISSN
収録物識別子 13493000
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AA11957899
出版者
出版者 International Coastal Research Center, Atmosphere and Ocean Research Institute, the University of Tokyo
出版者別名
東京大学大気海洋研究所国際沿岸海洋研究センター
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