Research field (2)：
Biodiversity and systematics
, Aquaculture
Research keywords (10)：
shellfish poisoning
, microalgae
, Southeast Asia
, phylogeny
, ultrastructure
, taxonomy
, red tide
, dinoflagellates
, harmful algal blooms
, algae
Research theme for competitive and other funds (20)：
2024 - 2029 Comprehensive assessment of offshore ecosystem vulnerability to marine heat waves
2024 - 2027 Comprehensive understanding of dinoflagellates in open ocean ecosystems: From biogeography and trophic strategies to future predictions
2023 - 2027 アジア太平洋沿岸域に分布する有害赤潮渦鞭毛藻の個体群識別と系統地理
2022 - 2025 Species composition, toxicity and distribution of azaspiracid-producing dinoflagellates in Japanese coastal waters
2022 - 2024 フィリピン沿岸における有害赤潮原因カレニア科渦鞭毛藻の多様性と分布
2019 - 2023 Cryptic population structure of small toxigenic marine dinoflagellates in Southeast Asian coasts
2019 - 2022 Genotypic diversity and phylogeography of harmful raphidophyte Chattonella in Southeast Asia
2015 - 2019 Oil production of bloom forming algae in conjunction with fish aquaculture in Mekong delta
2015 - 2018 Taxonomy and phylogeny of small red tide dinoflagellates commonly distributed in Asian coasts
2013 - 2017 Distribution of harmful algal bloom causative species in the coasts of Southeast Asia
2012 - 2015 Blooming and distribution expansion of ciguatera causative dinoflagellates in Southeast Asia
2012 - 2015 Taxonomy and phylogeny of red tide forming unarmored dinoflagellates based on flagellar apparatus
2011 - 2015 Ecological study of the mudskippers in the Mekong Delta, Vietnam
2010 - 2012 Studies on the marine microbial communities associated with the bloom of Chattonella anitiqua/marina
2009 - 2011 Phytoplankton changes effected by anxious water of enclosed
2007 - 2009 Ribotype identification and distribution of a harmful dinoflagellate Cochlodinium polykrikoides.
2007 - 2008 窒素固定生物群集の多様性が海洋表層の物質循環に及ぼす影響
2006 - 2008 Re-examination of the motile-cyst form relationship based on molecular phylogenetic analysis
2006 - 2008 Studies on occurrence and expansion mechanisms of toxic dinoflagellates in the South East Asian Countries
2006 - 2007 有害赤潮を形成するコクロディニウムの個体群識別と分布
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Papers (114)：
Lam Nguyen-Ngoc, Jacob Larsen, Hai Doan-Nhu, Kenneth Neil Mertens, Nina Lundholm, Vy Xuan Nguyen, Bernd Krock, Hung Manh Pham, Mitsunori Iwataki, Sascha Plewe, et al. Morphomolecular studies of Ceratocorys species (Dinophyceae, Gonyaulacales, Protoceratiaceae) reveal that Ceratocorys armata, C. gourretii, and C. horrida are conspecific and should be considered formae of C. horrida. Journal of Phycology. 2025
Hajime Uchida, Koki Yuasa, Tomoyuki Shikata, Mayu Ozawa, Satoshi Numano, Ryuichi Watanabe, Ryoji Matsushima, Hiroshi Oikawa, Koyo Kuwata, Wai Mun Lum, et al. Toxin analysis of Kareniaceae cultures isolated from the northern coastal waters in Japan. Proceedings of the 20th International Conference on Harmful Algae. 2025. 93-96
Mayu Ozawa, Hajime Uchida, Satoshi Numano, Ryuichi Watanabe, Ryoji Matsushima, Hiroshi Oikawa, Kazuya Takahashi, Mitsunori Iwataki, Toshiyuki Suzuki. New azaspiracid analogues produced by Azadinium spinosum isolated from Japanese coastal waters. Proceedings of the 20th International Conference on Harmful Algae. 2025. 89-92
Koyo Kuwata, Wai Mun Lum, Kazuya Takahashi, Garry Benico, Mayu Ozawa, Hajime Uchida, Satoshi Numano, Ryuichi Watanabe, Ryoji Matsushima, Toshiyuki Suzuki, et al. Diversity of amphidomatacean dinoflagellates in Japan, with a description of Azadinium inconspicuum sp. nov. and azaspiracid components in Azadinium poporum ribotypes. Harmful Algae. 2025. 150. 102969
Mayu Ozawa, Hajime Uchida, Satoshi Numano, Ryuichi Watanabe, Ryoji Matsushima, Mitsunori Iwataki, Toshiyuki Suzuki. Differential accumulation of dissolved azaspiracids and diarrhetic shellfish toxins in Manila clam (Ruditapes philippinarum): effects of temperature and tissue-specific uptake. Estuarine, Coastal and Shelf Science. 2025. 323. 109416
2021 - 現在 The University of Tokyo Graduate School of Agricultural and Life Sciences Associate Professor
2014 - The University of Tokyo Asian Natural Environmental Science Center
2010 - Yamagata University Faculty of Science
2009 - University of Copenhagen
2005 - Nagasaki University Institute for East China Sea Research
2002 - Nagasaki University Faculty of Fisheries
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Committee career (17)：
2025 - 日本プランクトン学会 英文誌編集委員会
2023 - International Society for the Study of Harmful Algae 評議員
2023 - 日本プランクトン学会 評議員
2021 - 日本プランクトン学会 和文誌編集委員会
2021 - 日本藻類学会 評議員
2018 - 日本水産学会 出版委員会(2020-副委員長,2022-委員長)
2017 - 北太平洋海洋科学機関(PICES) S-HAB
2016 - 日本学術会議 SCOR分科会 SIMSEA小委員会
2015 - 日本水産学会 企画広報委員会
2014 - Harmful Algae編集委員
2013 - 日本藻類学会 Phycological Research編集委員会
2013 - IOC協力推進委員 海洋環境・生物国内専門部会(2017-主査)
2013 - IOC協力推進委員 WESTPAC国内専門部会
2013 - 政府間海洋学委員会(IOC) 有害藻類に関する政府間パネル(IPHAB)
2012 - 環日本海海洋環境検討委員会委員
2012 - IOC/WESTPAC WESTPAC-HAB(2012-プロジェクトリーダー)
2011 - 日本藻類学会 和文誌編集委員会(2013-副編集長,2023-編集長)
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Awards (3)：
2007/03 - 日本プランクトン学会 日本プランクトン学会奨励賞
2006/03 - 日本水産学会 日本水産学会論文賞
2001/10 - 日本水産学会 Best poster presentation award
Association Membership(s) (6)：
The International Phycological Society
, THE PLANKTON SOCIETY OF JAPAN
, THE JAPANESE SOCIETY OF FISHERIES SCIENCE
, THE JAPANESE SOCIETY OF PHYCOLOGY
, International Society for the Study of Harmful Algae
, Phycological Society of America
