サバ科魚類3種の稚魚期における種判別のための形態計測と判別式の算出

en	Mouri, Masahiko ISNI Japan Fisheries Research and Education Agency 0000000494425826
ja	毛利, 雅彦水産研究・教育機構
ja-Kana	モウリ, マサヒコスイサンケンキュウキョウイクキコウ

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Abstract

内容記述

Linear discriminant functions for identifying three scombrid fish species at the at the juveniles stage were derived. The Juveniles of the Bluefin tuna (n=l6) reared at Kinki University in June 2012 and those of the long-tailed tuna (n=8) and bullet Tuna (n=l3) collected by surface trawl in the western part of the Japan Sea on Tenyo-Maru, a fisheries training vessel of National Fisheries University, in August 2012, were used as the Juvenile samples. We selected a total of nine measuring regions for these juveniles specimens, used as the explaining variables the values of the morphological measurement at each of these regions, which were standardized by the fork length, and obtained the discriminant. The accuracy rate of the discriminant was 94.4% (p=0.00) for the Thunnus fishes (bluefin tuna and long-tailed tuna) and bullet Tuna and 91.3% (p=0.02) for bluefin tuna and long-tailed tuna. The result of the morphological measurement supported the contribution ratio for the discriminant. In addition, we maked a simplified discriminant by using "body depth," the measured region with a high contribution ratio, for the discrimination between the Thunns fishes and bullet Tuna and "body depth" and "length between the base of the pelvic fin and the fork of the tail fin" for the discrimination between bluefin tuna and long-tailed tuna.

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書誌情報

ja : 水産大学校研究報告
en : Journal of National Fisheries University

巻 63, 号 1, p. 49-55, ページ数 7, 発行日 2014-12

出版者

水産大学校

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出版者

National Fisheries University

言語

ISSN

収録物識別子タイプ

PISSN

収録物識別子

0370-9361

書誌レコードID

収録物識別子タイプ

NCID

収録物識別子

AN00124678

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2024-10-15 05:25:06.118339

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