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Nakaya Mitsuhiro

Faculty of Fisheries Sciences　Marine Bioresource and Environmental Science　Marine Bioresource ScienceAssociate Professor

Researcher basic information

■ Degree
  • 水産科学 博士, 北海道大学
■ URL
researchmap URLホームページURL■ Various IDs
J-Global ID■ Research Keywords and Fields
Research Keyword
  • feeding habits
  • growth and survival
  • Early life history
  • Fisheries bio-resources
Research Field
  • Life Science, Aquatic bioproduction science, Fisheries bio-resources
■ Educational Organization

Career

■ Career
Career
  • May 2018 - Present
    Hokkaido University, Faculty of Fisheries Sciences, 准教授
  • Sep. 2012 - Apr. 2018
    Hokkaido University, School of Fisheries Sciences, 特任助教
  • Nov. 2010 - Aug. 2012
    Fisheries Research Agency, 研究職員
  • Mar. 2009 - Oct. 2010
    カキキン有限会社, 生産・販売・研究職員
  • Oct. 2006 - Jan. 2009
    Japan International Cooperation Agency, 青年海外協力隊 フィリピン国養殖隊員
  • Apr. 2006 - Sep. 2006
    カキキン有限会社, 生産・販売・研究職員
  • Apr. 2004 - Mar. 2006
    Fisheries Research Agency, 技術開発補佐職員
Educational Background
  • Apr. 2001 - Mar. 2004, 北海道大学大学院, 水産科学研究科, 環境生物資源学科 博士後期課程
  • Apr. 1999 - Mar. 2001, 北海道大学大学院, 水産科学研究科, 漁業学科 博士前期課程
  • Apr. 1995 - Mar. 1999, Hokkaido University, School of Fisheries Sciences

Research activity information

■ Awards
  • Mar. 2014, The Japanese Society of Fisheries and Technology, The Japanese Society of Fisheries and Technology Encouragement Prize in 2013
    The acquisition of the biological information to contribute the population dynamics model of Pacific saury by captive experiment
    Mitsuhiro Nakaya
  • Mar. 2011, The Japanese Society of Fisheries Science, Research article award of the Japanese Society of Fisheries Science in 2011
    Growth and maturation of Pacific saury Cololabis saira under laboratory conditions.
    M. Nakaya;T. Morioka;K. Fukunaga;N. Murakami;T. Ichikawa;S. Sekiya;S. Suyama
■ Papers
■ Other Activities and Achievements
■ Books and other publications
  • 道南おさかな図鑑
    魚に魅せられた北大の研究者たち
    海文堂出版, Oct. 2023, 9784303800116, 97p, Japanese
  • 水産科学・海洋環境科学実習
    中屋 光裕; 髙津 哲也, 魚類・ベントス測定
    海文堂, 2019, [Contributor]
  • 練習船による水産科学・海洋環境科学実習
    中屋光裕; 髙津哲也, 魚類・ベントス測定
    五稜出版社, 2016, [Contributor]
■ Lectures, oral presentations, etc.
  • 津軽海峡周辺におけるキアンコウの初期生態
    高偉峰; 中屋光裕; 高津哲也; 竹谷裕平; 鈴木亮; 野呂恭成
    第49回北洋研究シンポジウムー亜寒帯域における魚類の初期生活史研究と加入量予測の現状, 13 Sep. 2019, Japanese, Invited oral presentation
    [Invited], [Domestic Conference]
  • ホッケ生活史初期の成長
    河村眞美; 中屋光裕; 高津哲也; 巣山哲; 鈴木祐太郎; 高畠信一
    第49回北洋研究シンポジウムー亜寒帯域における魚類の初期生活史研究と加入量予測の現状, 13 Sep. 2019, Japanese, Invited oral presentation
    [Invited], [Domestic Conference]
■ Syllabus
  • 資源生物学特論Ⅱ, 2024年, 修士課程, 水産科学院
  • 資源生物学特論Ⅰ, 2024年, 修士課程, 水産科学院
  • 海洋生物科学実験Ⅱ, 2024年, 学士課程, 水産学部
  • 基礎乗船実習, 2024年, 学士課程, 水産学部
  • 一般教育演習(ﾌﾚｯｼｭﾏﾝｾﾐﾅｰ), 2024年, 学士課程, 全学教育
  • 水産科学英語Ⅰ, 2024年, 学士課程, 水産学部
  • 乗船実習, 2024年, 学士課程, 水産学部
  • 水産科学英語Ⅱ, 2024年, 学士課程, 水産学部
  • 水産資源各論, 2024年, 学士課程, 水産学部
  • 海洋保全学, 2024年, 学士課程, 水産学部
  • 教科教育法（水産Ⅰ）, 2024年, 学士課程, 教育学部
■ Affiliated academic society
  • JAPANESE SOCIETY OF FISHERIES OCEANOGRAPHY
  • JAPAN AQUACULTURE SOCIETY
  • THE JAPANESE SOCIETY OF FISHERIES SCIENCE
■ Research Themes
  • 親イカ由来の細菌と溶存態有機物（DOM）に着目したスルメイカ初期餌料の解明
    科学研究費助成事業
    01 Apr. 2023 - 31 Mar. 2026
    山本 潤; 足立 亨介; 柳本 卓; 中屋 光裕
    日本学術振興会, 基盤研究(B), 北海道大学, 23K26975
  • Detection of maternal effects using field-collected Pacific cod larvae and juveniles and its application to resource management
    Grants-in-Aid for Scientific Research
    01 Apr. 2021 - 31 Mar. 2024
    高津 哲也; 中屋 光裕
    本研究の目的は，産業重要種であるマダラGadus macrocephalusの野外採集仔魚から「母親効果」を検出し，母親効果を考慮した漁獲への変更が，資源量回復にどの程度貢献するのか解明することである。また，環境変動が資源量変動におよぼす影響も同時解析することで，母親効果を利用した資源保護策の有効性も明らかにする．
    まず，これまでのマダラの親魚量と着底期までの仔稚魚の生残率の関係を明らかにするために，主要産卵場の一つである青森県陸奥湾の1989年から2019年までの両者の豊度の間で累積的生残率を推定し，その年変動を明らかにした．その結果，累積的生残率は仔魚期の前半にあたる2月下旬から3月中旬の水温が高いほど高く，仔魚期の後半と稚魚期にあたる3月下旬から5月下旬の水温が7.6℃で最大値を示すことを明らかにした。水温はそれぞれ全変動の23%と22%を説明した。
    次に，孵化仔魚の耳石輪紋に形成される孵化チェック（通常より太い日周輪）の大きさが，卵径に比例するか明らかにするために，2022年1月に津軽海峡で採集した成熟魚を用いて人工授精・飼育を行い，孵化直前の卵と孵化直後の仔魚を得た。また成熟魚の体長や年齢，栄養状態が卵径におよぼす影響を明らかにするために，耳石による年齢査定と魚体測定を行った。
    野外採集仔魚は2021年4月と2022年2月に，主要産卵場である青森県陸奥湾でプランクトンネットによる採集を行った。同時に物理環境データと，仔魚の餌生物であるかいあし類ノープリウスの採集を行った。
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Hokkaido University, 21K05723
  • Study on the first food of Todarodes pacificus paralarvae focus on bacterial transmission between and mother-to-paralarvae
    Grants-in-Aid for Scientific Research
    01 Apr. 2020 - 31 Mar. 2023
    山本 潤; 足立 亨介; 柳本 卓; 中屋 光裕
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, 20H03055
  • Effects of egg size, larval growth rate, and juvenile nutritional condition on population dynamics of walleye pollock
    Grants-in-Aid for Scientific Research
    01 Apr. 2016 - 31 Mar. 2019
    TAKATSU Tetsuya; NAKAYA Mitsuhiro
    To clarify survival processes in Japan Pacific Stock (JPS) of walleye pollock Gadus chalcogrammus, maternal effect and somatic condition were investigated in Funka Bay in 2016-2018. No annual difference in hatch-check diameter on larval otolith derived from maternal was observed between three year-classes. Notochord lengths in late February and early March were small in low water temperature years. The 75-77% of settled juveniles collected in mid-June have settlement checks around their otoliths and settled fork-lengths were estimated at 67.2-69.0 mm from the relationship between fork length and otolith diameter. Feeding intensities and somatic conditions of juveniles decreased in Tsugaru Warm Current water from August to October, then those recovered with water temperature decreasing after October. Annual fluctuations of somatic condition and growth rate might influence the recruitment of JPS.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Hokkaido University, 16K07834
  • Study on use of microbial loop by Japanese flying squid paralarvae
    Grants-in-Aid for Scientific Research
    01 Apr. 2016 - 31 Mar. 2019
    YAMAMOTO Jun; SAKURAI Yasunori
    The present study examined the first food of Todarodes pacificus paralarvae by assuming that the paralarvae consume microorganisms which were produced by biological loop. The bacterial profile of the egg masses which were obtained through natural spawning in a large experimental tank was similar to those of the nidamental gland (the secretary organ of adult). This result suggested that the adhering bacteria might have originated from indigenous or symbiotic bacteria of the nidamental gland. While， metagenome analysis (CI1 and 16S-rRNA) on the gut contents which were extract from wild paralarvae by Laser Micro-dissection showed that the gut contents were consist of many species of eukaryote and prokaryote (the results on eukaryotic results may require additional testing). The result suggested paralarvae intake microorganism called “detritus”.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, 16H04963
  • Occurrence mechanism of strong-year classes in flathead flounder Hippoglossoides dubius by the assessment of transport process and prey abundance for larvae and juveniles
    Grants-in-Aid for Scientific Research
    01 Apr. 2013 - 31 Mar. 2016
    Takatsu Tetsuya; HOSHI NAOKI; NAKAYA MITSUHIRO; ISODA YUTAKA; INAGAKI YUTA; KANO YOTA; NAKATANI TOSHIKUNI; SUZUKI KOTA; TAMURA JUN'ICHI
    To clarify the occurrence mechanism of strong-year classes in flathead flounder Hippoglossoides dubius, transport process of pelagic larvae and juveniles and settled area of juveniles were investigated in Funka Bay and its vicinity in 2013-2015 FY. In May 2013, late pelagic stage larvae were collected with MOHT- and FMT-nets around the area off Muroran City located at the north-east end of the bay, but no larva was collected in 2014-2015. It might be important for the recruitment success in the 2013 year-class that the clockwise vortex off Muroran captured the larvae was retained by the predominantly northwesterly winds. In this vortex, suitable water temperature (4.1-5.6 degrees Celsius) and prey abundance were observed for larval growth. In contrast in August-December through 2013-2015, no settled juvenile was collected on the sea floor with an otter trawl net in and out of the bay with <98-m and 95-354-m bottom depths, respectively.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Hokkaido University, 25450269