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HIRAI JUNYA  平井 惇也

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Hirai Junya  平井 惇也

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Researcher Number 30762554
Other IDs
Affiliation (Current) 2025: 東京大学, 大気海洋研究所, 講師
Affiliation (based on the past Project Information) *help 2023 – 2024: 東京大学, 大気海洋研究所, 講師
2018 – 2022: 東京大学, 大気海洋研究所, 助教
Review Section/Research Field
Principal Investigator
Basic Section 40030:Aquatic bioproduction science-related / Basic Section 40040:Aquatic life science-related
Except Principal Investigator
Basic Section 40030:Aquatic bioproduction science-related
Keywords
Principal Investigator
カイアシ類 / 動物プランクトン / 共生寄生 / ウイルス / 広域分布 / 遺伝子発現 / 個体群動態 / 共生ー寄生 / 海洋多様性 / 種分化 / 交雑 / 一塩基多型 / 種多様性 … More
Except Principal Investigator
… More プランクトン / メタバーコーディング / 植物プランクトン / 沈降粒子 / セジメントトラップ / 生態系 / 懸濁態有機物 / 黒潮 / 日本海 Less
  • Research Projects

    (4 results)
  • Research Products

    (46 results)
  • Co-Researchers

    (3 People)
  •  Comparative biological oceanography between the Tsushima Warm Current and the Kuroshio

    • Principal Investigator
      児玉 武稔
    • Project Period (FY)
      2023 – 2026
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Review Section
      Basic Section 40030:Aquatic bioproduction science-related
    • Research Institution
      The University of Tokyo
  •  Functions and characteristics of marine viruses associated with cosmopolitan copepodsPrincipal Investigator

    • Principal Investigator
      平井 惇也
    • Project Period (FY)
      2023 – 2026
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Review Section
      Basic Section 40030:Aquatic bioproduction science-related
    • Research Institution
      The University of Tokyo
  •  Ecological role of marine viruses infecting zooplanktonPrincipal Investigator

    • Principal Investigator
      Hirai Junya
    • Project Period (FY)
      2020 – 2023
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Review Section
      Basic Section 40030:Aquatic bioproduction science-related
    • Research Institution
      The University of Tokyo
  •  Delimiting species in marine zooplankton using a molecular appriachPrincipal Investigator

    • Principal Investigator
      Hirai Junya
    • Project Period (FY)
      2018 – 2020
    • Research Category
      Grant-in-Aid for Early-Career Scientists
    • Review Section
      Basic Section 40040:Aquatic life science-related
    • Research Institution
      The University of Tokyo

All 2024 2023 2022 2021 2020 2018

All Journal Article Presentation

  • [Journal Article] Primary productivity impacts community structure of euphausiids in the low-latitude Indian and Pacific Oceans2024

    • Author(s)
      Fanyu Zhou,Junya Hirai,Takuya Sato,Sachiko Horii,Kazutaka Takahashi,Atsushi Tsuda
    • Journal Title

      Journal of Oceanography

      Volume: - Issue: 3 Pages: 163-176

    • DOI

      10.1007/s10872-024-00713-z

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-23KJ1168, KAKENHI-PROJECT-20H03059, KAKENHI-PROJECT-23K26979
  • [Journal Article] Improving taxonomic classification of marine zooplankton by molecular approach: registration of taxonomically verified 18S and 28S rRNA gene sequences2023

    • Author(s)
      Watanabe Tsuyoshi、Hirai Junya、Sildever Sirje、Tadokoro Kazuaki、Hidaka Kiyotaka、Tanita Iwao、Nishiuchi Koh、Iguchi Naoki、Kasai Hiromi、Nishi Noriko、Katakura Seiji、Taniuchi Yukiko、Kodama Taketoshi、他
    • Journal Title

      PeerJ

      Volume: 11 Pages: e15427-e15427

    • DOI

      10.7717/peerj.15427

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23K26978
  • [Journal Article] Divergent RNA viruses infecting sea lice, major ectoparasites of fish2023

    • Author(s)
      Chang Tianyi、Hunt Brian P. V.、Hirai Junya、Suttle Curtis A.
    • Journal Title

      PLOS Pathogens

      Volume: 19 Issue: 6 Pages: e1011386-e1011386

    • DOI

      10.1371/journal.ppat.1011386

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23K26979
  • [Journal Article] Comparisons of genetic population structures of copepods Pseudocalanus spp. in the?Okhotsk Sea: the first record of P. acuspes in coastal waters off Japan2023

    • Author(s)
      Hirai Junya、Katakura Seiji、Nagai Satoshi
    • Journal Title

      Marine Biodiversity

      Volume: 53 Issue: 1 Pages: 12-12

    • DOI

      10.1007/s12526-022-01323-y

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-20H03057
  • [Journal Article] A new species of genus <i>Sapphirina</i> (Copepoda, Cyclopoida) from the Kuroshio Extension region in the western North Pacific Ocean2022

    • Author(s)
      Takahashi Kazutaka、Itoh Hiroshi、Hirai Junya、Tadokoro Kazuaki、Nishiuchi Koh
    • Journal Title

      Plankton Benthos Res

      Volume: 17 Issue: 4 Pages: 358-368

    • DOI

      10.3800/pbr.17.358

    • ISSN
      1880-8247, 1882-627X
    • Year and Date
      2022-11-30
    • Language
      English
    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-20H03057, KAKENHI-PROJECT-20H03059
  • [Journal Article] <i>Paracalanus orientalis</i> n. sp. (Copepoda, Calanoida), formerly referred to as <i>P. parvus</i> in Japanese coastal waters2022

    • Author(s)
      Ueda Hiroshi、Itoh Hiroshi、Hirai Junya、Hidaka Kiyotaka
    • Journal Title

      Plankton Benthos Res

      Volume: 17 Issue: 2 Pages: 221-230

    • DOI

      10.3800/pbr.17.221

    • ISSN
      1880-8247, 1882-627X
    • Year and Date
      2022-05-30
    • Language
      English
    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-20H03057, KAKENHI-PROJECT-19H03038
  • [Journal Article] Molecular and morphological analyses to improve taxonomic classification of<i>Metridia lucens</i>/<i>pacifica</i>in the North Pacific2022

    • Author(s)
      Hirai Junya、Chen Fang、Itoh Hiroshi、Tadokoro Kazuaki、Lemay Matthew A、Hunt Brian P V、Tsuda Atsushi
    • Journal Title

      Journal of Plankton Research

      Volume: 44 Issue: 3 Pages: 454-463

    • DOI

      10.1093/plankt/fbac020

    • Peer Reviewed / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20H03057
  • [Journal Article] RNA Virosphere in a Marine Zooplankton Community in the Subtropical Western North Pacific2022

    • Author(s)
      Junya Hirai, Syun-ichi Urayama, Yoshiro Takaki, Miho Hirai, Keizo Nagasaki, Takuro Nunoura
    • Journal Title

      Microbes and Environments

      Volume: 37 Issue: 5 Pages: n/a

    • DOI

      10.1264/jsme2.ME21066

    • NAID

      130008138832

    • ISSN
      1342-6311, 1347-4405
    • Language
      English
    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20K20377, KAKENHI-PROJECT-20H03057, KAKENHI-PROJECT-22K18350, KAKENHI-PROJECT-22H00385
  • [Journal Article] Feeding Ecology of Three Euphausiid Species in the North Pacific Ocean Inferred From 18S V9 Metabarcoding and Stable Isotope Analysis2021

    • Author(s)
      Zhou Fanyu、Hirai Junya、Hamasaki Koji、Horii Sachiko、Tsuda Atsushi
    • Journal Title

      Frontiers in Marine Science

      Volume: 8 Pages: 756067-756067

    • DOI

      10.3389/fmars.2021.756067

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-20H03057, KAKENHI-PROJECT-20KK0240
  • [Journal Article] Characterization of diversity and community structure of small planktonic copepods in the Kuroshio region off Japan using a metabarcoding approach2021

    • Author(s)
      Hirai J、Yamazaki K、Hidaka K、Nagai S、Shimizu Y、Ichikawa T
    • Journal Title

      Marine Ecology Progress Series

      Volume: 657 Pages: 25-41

    • DOI

      10.3354/meps13539

    • Data Source
      KAKENHI-PROJECT-20H03057
  • [Journal Article] Metabarcoding analysis of trophic sources and linkages in the plankton community of the Kuroshio and neighboring waters2021

    • Author(s)
      Kobari Toru、Tokumo Yusuke、Sato Ibuki、Kume Gen、Hirai Junya
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 23265-23265

    • DOI

      10.1038/s41598-021-02083-8

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-20H03057, KAKENHI-PROJECT-20K06186
  • [Journal Article] DNA/RNA metabarcoding and morphological analysis of epipelagic copepod communities in the Izu Ridge off the southern coast of Japan2021

    • Author(s)
      Hirai Junya、Hidaka Kiyotaka、Nagai Satoshi、Shimizu Yugo
    • Journal Title

      ICES Journal of Marine Science

      Volume: 78 Issue: 9 Pages: 3444-3456

    • DOI

      10.1093/icesjms/fsab064

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-20H03057
  • [Journal Article] Decadal vision in oceanography 2021: New methods and problems2021

    • Author(s)
      Hirai Junya、Miya Masaki、Fujiki Tetsuichi、Kuwano-Yoshida Akira、Otosaka Shigeyoshi、Kaeriyama Hideki、Kako Shin'ichiro、Kataoka Tomoya、Matsuoka Daisuke、Hidaka Mitsuko、Sugiyama Daisuke、Fujio Kojima and
    • Journal Title

      Oceanography in Japan

      Volume: 30 Issue: 5 Pages: 227-253

    • DOI

      10.5928/kaiyou.30.5_227

    • NAID

      130008131958

    • ISSN
      0916-8362, 2186-3105
    • Year and Date
      2021-11-15
    • Language
      Japanese
    • Data Source
      KAKENHI-PROJECT-20H03057
  • [Journal Article] Decadal vision in oceanography 2021: Mid-latitude ocean2021

    • Author(s)
      橋濱史典・纐纈慎也・近藤能子・佐々木克徳・杉本周作・高橋一生・長井健容・西岡純・林田博士・平井淳也
    • Journal Title

      Oceanography in Japan

      Volume: 30 Issue: 5 Pages: 127-154

    • DOI

      10.5928/kaiyou.30.5_127

    • NAID

      130008131961

    • ISSN
      0916-8362, 2186-3105
    • Year and Date
      2021-11-15
    • Language
      Japanese
    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-17H01852, KAKENHI-PROJECT-19H01965, KAKENHI-PROJECT-20H03057, KAKENHI-PROJECT-20H03059, KAKENHI-PROJECT-20KK0240
  • [Journal Article] Distribution, Feeding Habits, and Growth of Chub Mackerel, Scomber japonicus, Larvae During a High-Stock Period in the Northern Satsunan Area, Southern Japan2021

    • Author(s)
      Kume Gen、Shigemura Taichi、Okanishi Masahiro、Hirai Junya、Shiozaki Kazuhiro、Ichinomiya Mutsuo、Komorita Tomohiro、Habano Akimasa、Makino Fumihiro、Kobari Toru
    • Journal Title

      Frontiers in Marine Science

      Volume: 8 Pages: 725227-725227

    • DOI

      10.3389/fmars.2021.725227

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-20H03057, KAKENHI-PROJECT-20K06186, KAKENHI-PROJECT-20K12151
  • [Journal Article] Large-scale metabarcoding analysis of epipelagic and mesopelagic copepods in the Pacific2020

    • Author(s)
      Hirai Junya、Tachibana Aiko、Tsuda Atsushi
    • Journal Title

      PLOS ONE

      Volume: 15 Issue: 5 Pages: e0233189-e0233189

    • DOI

      10.1371/journal.pone.0233189

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-20H03057
  • [Journal Article] Insights into reproductive isolation within the pelagic copepod Pleuromamma abdominalis with high genetic diversity using genome-wide SNP data2020

    • Author(s)
      Junya Hirai
    • Journal Title

      Marine Biology

      Volume: 167 Issue: 1 Pages: 1-1

    • DOI

      10.1007/s00227-019-3618-x

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18K14519
  • [Journal Article] Possible aplanochytrid (Labyrinthulea) prey detected using 18S metagenetic diet analysis in the key copepod species <i>Calanus sinicus</i> in the coastal waters of the subtropical western North Pacific2018

    • Author(s)
      Junya Hirai, Yoko Hamamoto, Daiske Honda, Kiyotaka Hidaka
    • Journal Title

      Plankton Benthos Res

      Volume: 13 Issue: 2 Pages: 75-82

    • DOI

      10.3800/pbr.13.75

    • NAID

      130006744038

    • ISSN
      1880-8247, 1882-627X
    • Year and Date
      2018-05-30
    • Language
      English
    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-18K14519, KAKENHI-PROJECT-17H03855
  • [Presentation] Copepod-virus interactions revealed by molecular and morphological approaches2024

    • Author(s)
      Hirai J, Katakura S, Kasai H, Nagai S
    • Organizer
      ICES/PICES 7th Zooplankton Production Symposium
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23K26979
  • [Presentation] Reference sequence data for marine zooplankton in the era of high-throughput sequencing2024

    • Author(s)
      Hirai J
    • Organizer
      ICES/PICES 7th Zooplankton Production Symposium
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23K26979
  • [Presentation] 動物プランクトンの分子生態学のこれまでと今後2023

    • Author(s)
      平井惇也
    • Organizer
      オーシャンDNAテック2023
    • Data Source
      KAKENHI-PROJECT-23K26979
  • [Presentation] Characterization of the genetic population structures of three Pseudocalanus species (Copepoda, Calanoida) in the Okhotsk Sea2023

    • Author(s)
      Junya Hirai, Seiji Katakura, Satoshi Nagai
    • Organizer
      The 37th International Symposium on Okhotsk Sea & Polar Oceans 2023
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20H03057
  • [Presentation] Small RNAs and metatranscriptomics: a window into the world of viruses infecting copepods2023

    • Author(s)
      Chang T, Hirai J, Hunt BPV, Suttle AC
    • Organizer
      11th Aquatic Virus Workshop
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-23K26979
  • [Presentation] Interactions between marine viruses and planktonic copepod Pseudocalanus newmani2022

    • Author(s)
      Junya Hirai, Seiji Katakura, Satoshi Nagai
    • Organizer
      MetaZooGene symposium 2022
    • Data Source
      KAKENHI-PROJECT-20H03057
  • [Presentation] 海洋性動物プランクトンのウイルス研究2022

    • Author(s)
      平井 惇也, 片倉 靖次, 長井 敏
    • Organizer
      第69回 日本生態学会大会
    • Data Source
      KAKENHI-PROJECT-20H03057
  • [Presentation] Ecological dynamics of marine copepods and viruses in the Okhotsk Sea2022

    • Author(s)
      Junya Hirai, Seiji Katakura, Satoshi Nagai
    • Organizer
      The 36th International Symposium on the Okhotsk Sea & Polar Oceans 2022
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-20H03057
  • [Presentation] オホーツク海における浮遊性カイアシ類Pseudocalanus acuspesの初記録および遺伝的集団構造の近縁種比較2022

    • Author(s)
      平井 惇也, 片倉 靖次, 長井 敏
    • Organizer
      日本海洋学会海洋生物シンポジウム2022
    • Data Source
      KAKENHI-PROJECT-20H03057
  • [Presentation] メタバーコーディングによる動物プランクトン群集の把握 ―これまでの進展と今後の展望―2022

    • Author(s)
      平井惇也
    • Organizer
      OceanDNAテック2022
    • Data Source
      KAKENHI-PROJECT-20H03057
  • [Presentation] 海洋動物プランクトンの分子生態学2022

    • Author(s)
      平井惇也
    • Organizer
      日本プランクトン学会若手の会
    • Invited
    • Data Source
      KAKENHI-PROJECT-20H03057
  • [Presentation] 浮遊性カイアシ類Pseudocalanus newmaniから検出された2種のウイルスの生態学的挙動2021

    • Author(s)
      平井惇也, 片倉靖次, 長井 敏
    • Organizer
      日本海洋学会秋季大会
    • Data Source
      KAKENHI-PROJECT-20H03057
  • [Presentation] 動物プランクトンのメタバーコーディング2021

    • Author(s)
      平井惇也
    • Organizer
      OceanDNAテック2021 環境DNA技術はどこまで進むか?
    • Data Source
      KAKENHI-PROJECT-20H03057
  • [Presentation] 分子生物学的手法を用いた動物プランクトンの多様性研究2021

    • Author(s)
      平井惇也
    • Organizer
      日本プランクトン学会シンポジウム「次世代プランクトン研究を開拓する新技術・方法論」
    • Data Source
      KAKENHI-PROJECT-20H03057
  • [Presentation] 海洋学会将来構想2021: 新たな手法と問題2021

    • Author(s)
      平井惇也, 宮正樹, 藤木徹一, 吉田聡, 乙坂重嘉, 帰山秀樹, 加古真一郎, 片岡智哉, 松岡大祐, 日高弥子, 杉山大祐, 小嶌不二夫
    • Organizer
      日本海洋学会創;周年記念シンポジウム;日本の海洋学の今とこれから
    • Data Source
      KAKENHI-PROJECT-20H03057
  • [Presentation] ウイルス存在下におけるカイアシ類Pseudocalanus newmaniの網羅的遺伝子発現解析2021

    • Author(s)
      平井惇也, 片倉靖次, 長井 敏
    • Organizer
      日本ベントス学会;日本プランクトン学会合同大会
    • Data Source
      KAKENHI-PROJECT-20H03057
  • [Presentation] Insights into reproductive isolation within highly divergent copepod Pleuromamma abdominalis using genome-wide SNP data2020

    • Author(s)
      Junya Hirai
    • Organizer
      Ocean Science Meeting
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K14519
  • [Presentation] 小型浮魚類の産卵場及び成育場としての北部薩南海域の重要性について2018

    • Author(s)
      久米元・小針統・一宮睦雄・小森田智大・平井惇也・相田真希・兵藤不二夫・竹田力・重村太一・黒田大海・吉永尚平・中屋慧・鳴海敦
    • Organizer
      日本海洋学会秋季大会
    • Data Source
      KAKENHI-PROJECT-18K14519
  • [Presentation] The importance of the north Satsunan area, southern Japan as the spawning and nursery ground for small pelagic fish2018

    • Author(s)
      Kume G, Kobari T, Ichinomiya M, Komorita T, Hirai J, Aita-Noguchi M, Hyodo F, Takeda T, Shigemura T, Kuroda H, Yoshinaga S, Nakaya K, Narumi A
    • Organizer
      PICES Annual Meeting
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K14519
  • [Presentation] 鹿児島湾湾口部における魚類仔魚の摂餌生態2018

    • Author(s)
      黒田大海・久米元・小針統・竹田力・一宮睦雄・小森田智大・平井惇也・相田真希・兵藤不二夫
    • Organizer
      日本海洋学会秋季大会
    • Data Source
      KAKENHI-PROJECT-18K14519
  • [Presentation] Trophic sources and linkages of mesozooplankton and fish larvae in the Kuroshio based on metabarcoding analysis2018

    • Author(s)
      Sato I, Kobari T, Yoshinaga S, Kume G, Hirai J
    • Organizer
      PICES Annual Meeting
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K14519
  • [Presentation] メタ18S解析による黒潮周辺海域表層の尾虫類の食性分析2018

    • Author(s)
      日高清隆・平井惇也・鈴木光次
    • Organizer
      日本ベントス学会・日本プランクトン学会合同大会
    • Data Source
      KAKENHI-PROJECT-18K14519
  • [Presentation] 鹿児島県南部の黒潮周辺海域における魚類仔魚の群集構造と摂餌生態2018

    • Author(s)
      吉永尚平・久米元・山之上香織・田野中里佳・小針統・平井惇也・相田真希・兵藤不二夫
    • Organizer
      日本海洋学会秋季大会
    • Data Source
      KAKENHI-PROJECT-18K14519
  • [Presentation] Feeding habits of larval fish in the mouth of Kagoshima Bay, southern Japan2018

    • Author(s)
      Kuroda H, Kume G, Kobari T, Takeda T, Ichinomiya M, Komorita T, Hirai J, Aita-Noguchi M, Hyodo F
    • Organizer
      PICES Annual Meeting
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K14519
  • [Presentation] Feeding habits and diet composition of the larval Pacific Bluefin tuna larvae in the two nursery grounds2018

    • Author(s)
      Kodama T, Tawa A, Ishihara T, Hirai J, Oshimo S
    • Organizer
      4th CLIOTOP Symposium
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K14519
  • [Presentation] Reproductive isolation in oceanic copepods revealed by genome-wide SNP data2018

    • Author(s)
      Hirai J
    • Organizer
      PICES Annual Meeting
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K14519
  • [Presentation] The assemblages and feeding habits of larval fish in the Kuroshio and the adjacent waters, southern Japan2018

    • Author(s)
      Yoshinaga S, Kume G, Yamanoue K, Tanonaka N, Kobari T, Hirai J, Aita-Noguchi M, Hyodo F
    • Organizer
      PICES Annual Meeting
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K14519
  • [Presentation] Transpaficic distribution of micronektonic fish community in the subtropical open water2018

    • Author(s)
      Nagatomo Y, Takahashi K, Sado T, Miya M, Hashihama F, Horii S, Hirai J
    • Organizer
      PICES Annual Meeting
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-18K14519
  • 1.  児玉 武稔 (20735899)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 1 results
  • 2.  中江 美里 (20831754)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 3.  山口 珠葉 (30845293)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results

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