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        <identifier>oai:fra.repo.nii.ac.jp:02010469</identifier>
        <datestamp>2026-01-14T08:11:53Z</datestamp>
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          <dc:title xml:lang="ja">サクラマスの耳石バーコード標識パターン数を増やすための低水温飼育と昇温刺激を併用した標識方法</dc:title>
          <dc:title xml:lang="en">A Newly Thermal Induced Otolith Marking Method Applied to Masu Salmon Using CooI Rearlng Water and an Abrupt Rise in Temperature to Increase the Number of Marks Pattern</dc:title>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="en">Sakamoto, Jun</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja">坂本, 準</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja-Kana">サカモト, ジュン</jpcoar:creatorName>
            <jpcoar:familyName xml:lang="en">Sakamoto</jpcoar:familyName>
            <jpcoar:familyName xml:lang="ja">坂本</jpcoar:familyName>
            <jpcoar:familyName xml:lang="ja-Kana">サカモト</jpcoar:familyName>
            <jpcoar:givenName xml:lang="en">Jun</jpcoar:givenName>
            <jpcoar:givenName xml:lang="ja">準</jpcoar:givenName>
            <jpcoar:givenName xml:lang="ja-Kana">ジュン</jpcoar:givenName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="en">Kuwaki, Motoyasu</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja">桑木, 基靖</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja-Kana">クワキ, モトヤス</jpcoar:creatorName>
            <jpcoar:familyName xml:lang="en">Kuwaki</jpcoar:familyName>
            <jpcoar:familyName xml:lang="ja">桑木</jpcoar:familyName>
            <jpcoar:familyName xml:lang="ja-Kana">クワキ</jpcoar:familyName>
            <jpcoar:givenName xml:lang="en">Motoyasu</jpcoar:givenName>
            <jpcoar:givenName xml:lang="ja">基靖</jpcoar:givenName>
            <jpcoar:givenName xml:lang="ja-Kana">モトヤス</jpcoar:givenName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:nameIdentifier nameIdentifierURI="https://kaken.nii.ac.jp/ja/search/?qm=80576801" nameIdentifierScheme="e-Rad_Researcher">80576801</jpcoar:nameIdentifier>
            <jpcoar:creatorName xml:lang="en">Eba, Takeshi</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja">江場, 岳史</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja-Kana">エバ, タケシ</jpcoar:creatorName>
            <jpcoar:familyName xml:lang="en">Eba</jpcoar:familyName>
            <jpcoar:familyName xml:lang="ja">江場</jpcoar:familyName>
            <jpcoar:familyName xml:lang="ja-Kana">エバ</jpcoar:familyName>
            <jpcoar:givenName xml:lang="en">Takeshi</jpcoar:givenName>
            <jpcoar:givenName xml:lang="ja">岳史</jpcoar:givenName>
            <jpcoar:givenName xml:lang="ja-Kana">タケシ</jpcoar:givenName>
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          <datacite:description xml:lang="en" descriptionType="Abstract">Thermally-induced bar-code otolith marking of salmonids is usually done at the eyed-egg or alevin stage by abruptly cooling the water temperature.  In this study，we investlgated a new otolith marking method for masu salmon Oncorhynchus masou to increase the number of otolith marks．We first attempted to delay the emergence time of fry b yuslng a cooling system to extend the period of thermal marking.  With cooI water（5.5℃），emergence time was delayed by 44 days compared to normal conditions（9.5℃）．A 24h increase in rearing water temperature from 5.5℃ to 9.5℃ produced 3 otolith marks at the eyed-egg stage and 5 otolith marks at the alevinst age.  We show that this new therma lmarking method results in more otolith marks than the former method．</datacite:description>
          <datacite:description xml:lang="ja" descriptionType="Abstract">サクラマス(Oncorhynchus masou)の耳石バーコード標識パターン数を増やすための標識方法について検討した。水温を9.5℃から5.5℃に冷却した飼育水を用いた結果、標識が可能な発眼卵から浮上までの期間を9.5℃の飼育に比べて44日間延長することができた。また、標識時に24時間の昇温刺激(4℃)を与えることで、卵期に3本、仔魚期に5本の明瞭なバンドを施すことができた。この結果から、低水温飼育と標識時の昇温刺激標識を併用することで耳石バーコード標識パターン数を増やすことが可能となった。</datacite:description>
          <datacite:description xml:lang="ja" descriptionType="Other">ファイル名末尾が”_abs_j”のファイルは和文要旨</datacite:description>
          <dc:publisher xml:lang="ja">水産総合研究センター</dc:publisher>
          <dc:publisher xml:lang="en">Japan Fisheries Research Agency</dc:publisher>
          <datacite:date dateType="Issued">2009-09-30</datacite:date>
          <dc:language>jpn</dc:language>
          <dc:type rdf:resource="http://purl.org/coar/resource_type/c_6501">journal article</dc:type>
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            <jpcoar:relatedIdentifier identifierType="URI">https://agriknowledge.affrc.go.jp/RN/2010782177</jpcoar:relatedIdentifier>
            <jpcoar:relatedTitle xml:lang="ja">日本農学文献記事索引（AgriKnowledge）</jpcoar:relatedTitle>
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          <jpcoar:sourceIdentifier identifierType="NCID">AA12359338</jpcoar:sourceIdentifier>
          <jpcoar:sourceIdentifier identifierType="PISSN">1883-2253</jpcoar:sourceIdentifier>
          <jpcoar:sourceTitle xml:lang="ja">水産技術</jpcoar:sourceTitle>
          <jpcoar:sourceTitle xml:lang="en">Journal of fisheries technology</jpcoar:sourceTitle>
          <jpcoar:volume>2</jpcoar:volume>
          <jpcoar:issue>1</jpcoar:issue>
          <jpcoar:numPages>6</jpcoar:numPages>
          <jpcoar:pageStart>25</jpcoar:pageStart>
          <jpcoar:pageEnd>30</jpcoar:pageEnd>
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