Junya Hirai

Profile Information

Affiliation: 助教, 大気海洋研究所, 東京大学

Degree: 博士（農学）(東京大学)

Researcher number: 30762554
J-GLOBAL ID: 201801001297282357
researchmap Member ID: B000314291

Research History

Nov, 2016 - Present

Research Associate, Atmosphere and Ocean Research Institute, The University of Tokyo
Mar, 2018 - Feb, 2020

Visiting Researcher, University of British Columbia
Apr, 2014 - Oct, 2016

JSPS posdoc, National Research Institute of Fisheries Science

Awards

2020

Okada prize, The Oceanographic Society of Japan

Junya Hirai
2018

Young Investigators Award of the Plankton Society of Japan, The Plankton Society of Japan

Junya Hirai
2017

est Paper Award of the Plankton Society of Japan (coauthor), The Plankton Society of Japan

Junya Hirai

Papers

Molecular and morphological analyses to improve taxonomic classification of Metridia lucens/pacifica in the North Pacific

Junya Hirai, Fang Chen, Hiroshi Itoh, Kazuaki Tadokoro, Matthew A Lemay, Brian P V Hunt, Atsushi Tsuda

Journal of Plankton Research, Apr 28, 2022 Peer-reviewedLead authorCorresponding author
RNA Virosphere in a Marine Zooplankton Community in the Subtropical Western North Pacific

Junya Hirai, Syun-ichi Urayama, Yoshiro Takaki, Miho Hirai, Keizo Nagasaki, Takuro Nunoura

Microbes and Environments, 37(5) ME21066, Jan, 2022 Peer-reviewedLead authorCorresponding author
Metabarcoding analysis of trophic sources and linkages in the plankton community of the Kuroshio and neighboring waters

Toru Kobari, Yusuke Tokumo, Ibuki Sato, Gen Kume, Junya Hirai

Scientific Reports, 11 23265, Dec 1, 2021 Peer-reviewed
Feeding Ecology of Three Euphausiid Species in the North Pacific Ocean Inferred From 18S V9 Metabarcoding and Stable Isotope Analysis

Fanyu Zhou, Junya Hirai, Koji Hamasaki, Sachiko Horii, Atsushi Tsuda

Frontiers in Marine Science, 8 756067, Oct 20, 2021 Peer-reviewed
Distribution, Feeding Habits, and Growth of Chub Mackerel, Scomber japonicus, Larvae During a High-Stock Period in the Northern Satsunan Area, Southern Japan

Gen Kume, Taichi Shigemura, Masahiro Okanishi, Junya Hirai, Kazuhiro Shiozaki, Mutsuo Ichinomiya, Tomohiro Komorita, Akimasa Habano, Fumihiro Makino, Toru Kobari

Frontiers in Marine Science, 8 725227, Oct 7, 2021 Peer-reviewed
DNA/RNA metabarcoding and morphological analysis of epipelagic copepod communities in the Izu Ridge off the southern coast of Japan

Junya Hirai, Kiyotaka Hidaka, Satoshi Nagai, Yugo Shimizu

ICES Journal of Marine Science, May 24, 2021 Peer-reviewedLead authorCorresponding author
Characterization of diversity and community structure of small planktonic copepods in the Kuroshio region off Japan using a metabarcoding approach

J Hirai, K Yamazaki, K Hidaka, S Nagai, Y Shimizu, T Ichikawa

Marine Ecology Progress Series, 657 25-41, Jan 7, 2021 Peer-reviewedLead authorCorresponding author
Diet niche segregation of co-occurring larval stages of mesopelagic and commercially important fishes in the Osumi Strait assessed through morphological, DNA metabarcoding, and stable isotope analyses

Gen Kume, Toru Kobari, Junya Hirai, Hiroumi Kuroda, Tsutomu Takeda, Mutsuo Ichinomiya, Tomohiro Komorita, Maki Aita-Noguchi, Fujio Hyodo

Marine Biology, 168(1), Jan, 2021 Peer-reviewed
Large-scale metabarcoding analysis of epipelagic and mesopelagic copepods in the Pacific

Junya Hirai, Aiko Tachibana, Atsushi Tsuda

PLOS ONE, 15(5), May, 2020 Peer-reviewedLead authorCorresponding author
Feeding habits of the Pacific Bluefin tuna (Thunnus orientalis) larvae in two nursery grounds based on morphological and metagenomic analyses

Taketoshi Kodama, Junya Hirai, Atsushi Tawa, Taiki Ishihara, Seiji Ohshimo

Deep-Sea Research Part II: Topical Studies in Oceanography, 2020 Peer-reviewed
Insights into reproductive isolation within the pelagic copepod Pleuromamma abdominalis with high genetic diversity using genome-wide SNP data

Junya Hirai

Marine Biology, 167(1), Jan, 2020 Peer-reviewedLead authorCorresponding author
Identification of molecular markers associated with starvation in female Calanus sinicus (Copepoda: Calanoida)

Takuya Ohnishi, Junya Hirai, Shinji Shimode, Atsushi Tsuda

Marine Ecology Progress Series, 614 51-65, Apr, 2019 Peer-reviewed
Possible aplanochytrid (Labyrinthulea) prey detected using 18S metagenetic diet analysis in the key copepod species Calanus sinicus in the coastal waters of the subtropical western north pacific

Junya Hirai, Yoko Hamamoto, Daiske Honda, Kiyotaka Hidaka

Plankton and Benthos Research, 13(2) 75-82, 2018 Peer-reviewedLead authorCorresponding author
Cryptic zooplankton diversity revealed by a metagenetic approach to monitoring metazoan communities in the coastal waters of the Okhotsk Sea, northeastern Hokkaido

Junya Hirai, Seiji Katakura, Hiromi Kasai, Satoshi Nagai

Frontiers in Marine Science, 4(379), Dec 11, 2017 Peer-reviewedLead authorCorresponding author
Diet composition and feeding habits of larval Pacific bluefin tuna Thunnus orientalis in the Sea of Japan: integrated morphological and metagenetic analysis

Taketoshi Kodama, Junya Hirai, Saori Tamura, Takashi Takahashi, Yosuke Tanaka, Taiki Ishihara, Atsushi Tawa, Haruyuki Morimoto, Seiji Ohshimo

MARINE ECOLOGY PROGRESS SERIES, 583 211-226, Nov, 2017 Peer-reviewed
Evaluation of metagenetic community analysis of planktonic copepods using Illumina MiSeq: Comparisons with morphological classification and metagenetic analysis using Roche 454

Junya Hirai, Satoshi Nagai, Kiyotaka Hidaka

PLoS ONE, 12(7), Jul 1, 2017 Peer-reviewedLead authorCorresponding author
Molecular-based diet analysis of the early post-larvae of Japanese sardine Sardinops melanostictus and Pacific round herring Etrumeus teres

Junya Hirai, Kiyotaka Hidaka, Satoshi Nagai, Tadafumi Ichikawa

MARINE ECOLOGY PROGRESS SERIES, 564 99-113, Feb, 2017 Peer-reviewedLead authorCorresponding author
Possible association of diazotrophs with marine zooplankton in the Pacific Ocean

Kazi Md. Azimuddin, Junya Hirai, Shotaro Suzuki, Md. Nurul Haider, Aiko Tachibana, Keigo Watanabe, Minoru Kitamura, Fuminori Hashihama, Kazutaka Takahashi, Koji Hamasaki

MICROBIOLOGYOPEN, 5(6) 1016-1026, Dec, 2016 Peer-reviewed
Occurrence of the Paracalanus parvus species complex in offshore waters south of Japan and their genetic and morphological identification to species

Kiyotaka Hidaka, Hiroshi Itoh, Junya Hirai, Atsushi Tsuda

Plankton and Benthos Research, 11(4) 131-143, 2016 Peer-reviewed
Extensive genetic diversity and endemism across the global range of the oceanic copepod Pleuromamma abdominalis

Junya Hirai, Atsushi Tsuda, Erica Goetze

PROGRESS IN OCEANOGRAPHY, 138 77-90, Nov, 2015 Peer-reviewedLead authorCorresponding author
Effects of plankton net characteristics on metagenetic community analysis of metazoan zooplankton in a coastal marine ecosystem

Junya Hirai, Motoshige Yasuike, Atushi Fujiwara, Yoji Nakamura, Soshi Hamaoka, Seiji Katakura, Yoshihito Takano, Satoshi Nagai

JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY, 469 36-43, Aug, 2015 Peer-reviewedLead authorCorresponding author
Metagenetic community analysis of epipelagic planktonic copepods in the tropical and subtropical Pacific

Junya Hirai, Atsushi Tsuda

MARINE ECOLOGY PROGRESS SERIES, 534 65-78, Aug, 2015 Peer-reviewedLead authorCorresponding author
A metagenetic approach for revealing community structure of marine planktonic copepods

J. Hirai, M. Kuriyama, T. Ichikawa, K. Hidaka, A. Tsuda

Molecular Ecology Resources, 15(1) 68-80, Jan, 2015 Peer-reviewedLead authorCorresponding author
Evaluation of ITS2-28S as a molecular marker for identification of calanoid copepods in the subtropical western North Pacific

Junya Hirai, Shinji Shimode, Atsushi Tsuda

JOURNAL OF PLANKTON RESEARCH, 35(3) 644-656, May, 2013 Peer-reviewedLead authorCorresponding author
The temporal and spatial distribution of krill (Meganyctiphanes norvegica) at the deep seabed of the Faroe-Shetland Channel, UK: A potential mechanism for rapid carbon flux to deep sea communities

Junya Hirai, Daniel O. B. Jones

MARINE BIOLOGY RESEARCH, 8(1) 48-60, 2012 Peer-reviewedLead authorCorresponding author

Misc.

Decadal Vision in Oceanography 2021: New methods and problems

Oceanography in Japan, 30(5) 227-253, Nov, 2021 Peer-reviewedLead author
Decadal Vision in Oceanography 2021: Mid-latitude Ocean

Fuminori Hashihama, Shinya Kouketsu, Yoshiko Kondo, Yoshi N. Sasaki, Shusaku Sugimoto, Kazutaka Takahashi, Takeyoshi Nagai, Jun Nishioka, Hakase Hayashida, Junya Hirai

Oceanography in Japan, 30(5) 131-158, Nov, 2021 Peer-reviewed
Molecular-based approach for revealing community structure and diversity of marine zooplankton

Junya Hirai

Oceanography in Japan, 30(1) 1-13, Jan, 2021 Lead author
Metagenetic community analysis of copepods using high throughput sequencing

62(1) 73-78, Feb, 2015

Presentations

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

平井惇也, 片倉靖次, 長井敏

日本海洋学会海洋生物シンポジウム2022, Mar 19, 2022
Insights on marine viruses associated with zooplankton

Mar 17, 2022
Ecological dynamics of marine copepods and viruses in the Okhotsk Sea

Junya HiraiSeiji Katakura, Satoshi Nagai

The 36th International Symposium on the Okhotsk Sea & Polar Oceans 2022, Feb 21, 2022
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

平井惇也

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」, Sep, 2021
海洋学会将来構想2021: 新たな手法と問題

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

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, Sep, 2021
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

平井惇也, 片倉靖次, 長井敏

日本海洋学会秋季大会, Sep, 2021
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

平井惇也, 片倉靖次, 長井敏

日本ベントス学会;日本プランクトン学会合同大会, Sep, 2021
動物プランクトンのメタバーコーディング

平井惇也

OceanDNAテック2021 環境DNA技術はどこまで進むか？, Jun, 2021
分子生物学的手法を用いた動物プランクトンの群集構造解析と多様性に関する研究

平井惇也

日本海洋学会岡田賞受賞記念講演, Nov, 2020
ゲノムワイドなSNPs解析によるカイアシ類の生殖隔離判定

平井惇也

日本海洋学会海洋生物シンポジウム2020, Mar, 2020
Insights into reproductive isolation within highly divergent copepod Pleuromamma abdominalis using genome-wide SNP data

Junya Hirai

Ocean Science Meeting, Feb, 2020
Metabarcoding diet analysis for revealing predator-prey relationships during the spawning period of Japanese sardine and Pacific round herring in Tosa Bay

PICES Annual Meeting, Oct, 2019
Characterization of diversity and community structure of planktonic copepods in the Kuroshio region off Japan using a metagenetic approach

Junya HiraiKiyotaka HidakaSatoshi NagaiYugo, ShimizuTadafumi Ichikawa

MetaZooGene workshop: Rediscovering pelagic biodiversity, Sep, 2019
Reproductive isolation in oceanic copepods revealed by genome-wide SNP data

Junya Hirai

PICES Annual Meeting, Oct, 2018
Copepod diversity and biogeography revealed by a metagenetic approach

Junya Hirai, Aiko Tachibana, Atsushi Tsuda

Sep, 2017
Large-scale metagenetic community analysis of epipelagic and mesopelagic copepods in the Pacific

JPGU-AGU Joint Meeting 2017, May, 2017
メタ18S解析による新たな捕食－被食関係の探索 ―カイアシ類餌料としてのラビリンチュラ類を例に―

平井惇也, 浜本洋子, 本多大輔, 日高清隆

日本海洋学会海洋生物学研究会第一回シンポジウム, Mar, 2017
Metagenetics of zooplankton community in the Okhotsk Sea

Junya Hirai, Seiji Katakura, Hiromi Kasai, Masateru Iwabuchi, Satoshi Nagai

Feb, 2017
Metagenetic analysis of marine planktonic copepods in the Pacific

Junya Hirai, Atsushi Tsuda

May, 2016
表層・中層性カイアシ類の多様性と分布の緯度変化

平井惇也, 津田敦

日本海洋学会春季大会, Mar, 2016
メタ18S解析によるマイワシ・ウルメイワシの初期餌料の解明

平井惇也, 日高清隆, 長井敏, 髙須賀明典, 市川忠史

日本海洋学会春季大会, Mar, 2016
分子生物学的手法によるカイアシ類の多様性解析

平井惇也, 津田敦

東京大学大気海洋研究所共同利用シンポジウム, Feb, 2016
Diversity and biogeography of marine planktonic copepods: Insights from metagenetic community analysis in the Pacific

Junya Hirai, Atsushi Tsuda

Dec, 2015
Metagenetic Community Analysis of Marine Planktonic Copepods in the Pacific

Junya Hirai

Gordon Research Conference: Linking Molecular Mechanisms with Ecological Outcomes, Aug, 2015
全球スケールの分子系統地理による浮遊性カイアシ類Pleuromamma abdominalisの遺伝的多様性の解明

平井惇也, Erica Goetze, 津田敦

日本海洋学会春季大会, Mar, 2015
太平洋熱帯・亜熱帯における浮遊性カイアシ類Pleuromamma abdominalisの分子系統地理

平井惇也, 津田敦

日本ベントス学会・日本プランクトン学会合同大会, Sep, 2014
超並列シーケンサーを用いたカイアシ類の群集構造解析

平井惇也, 下出信次, 栗山美樹子, 市川忠史, 日高清隆, 津田敦

日本プランクトン学会シンポジウム「遺伝子解析とプランクトン研究」, Mar, 2014
太平洋亜熱帯海域におけるカイアシ類のメタ28S rDNA 解析

平井惇也, 津田敦

日本海洋学会春季大会, Mar, 2013
A metagenetic method for marine planktonic copepods using 454 pyrosequencing of 28S rDNA gene

Junya Hirai, Tadafumi Ichikawa, Kiyotaka Hidaka, Atsushi Tsuda

Feb, 2013
ITS2-28S D1/D2領域による亜熱帯性カラヌス目カイアシ類の種同定

平井惇也, 下出信次, 津田敦

日本ベントス学会・日本プランクトン学会合同大会, Sep, 2012
黒潮周辺海域におけるカイアシ類のメタゲノム解析

平井惇也, 市川忠史, 日高清隆, 津田敦

Sep, 2012
ITS2-28S D1/D2領域による亜熱帯性カラヌス目カイアシ類の種同定と展望

平井惇也, 下出信次, 津田敦

東京大学大気海洋研究所共同利用シンポジウム, Sep, 2011
英国フェロー・シェットランド海峡におけるオキアミ類の海底付近の分布および炭素量

平井惇也, Daniel Jones

日本水産学会春季大会, Mar, 2011
トラフグの低塩分飼育下における成長関連遺伝子および筋肉タンパク質の発現制御

金子元, 平井惇也, 渡部終五

日本水産学会春季大会, Mar, 2009

Research Projects

気候変動の影響評価に向けた地球規模の海洋性動物プランクトン多様性解析

環境研究総合推進費革新型研究開発（若手枠）, 環境省, Apr, 2022 - Mar, 2025

平井惇也
Ecological role of marine viruses infecting zooplankton

Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, Apr, 2020 - Mar, 2024
Delimiting species in marine zooplankton using a molecular appriach

Grants-in-Aid for Scientific Research Grant-in-Aid for Early-Career Scientists, Japan Society for the Promotion of Science, Apr, 2018 - Mar, 2021

Hirai Junya
メタゲノム解析による黒潮域小型カイアシ類の生態学的挙動と被食者としての役割の解明

科学研究費助成事業特別研究員奨励費, 日本学術振興会, Apr, 2014 - Mar, 2017

平井惇也
太平洋熱帯・亜熱帯における浮遊性カイアシ類の多様性と地理分布

科学研究費助成事業特別研究員奨励費, 日本学術振興会, 2012 - 2013

平井惇也

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