Detailed Information

Research Field/Keywords for Research Field

• Marine Ecology, Macrobenthos, Hypoxia

Employment Experience

• 2016/04 - 2017/01

Field of Specialization

• Ecology/Environment, Biodiversity/Systematics, Environmental impact assessment, Aquatic bioproduction science

Membership in Academic Societies

• The Japanese Society of Fisheries Science

Research Topics and Results

• Growth and survival of Sinonovacula constricta on the coast of Saga Prefecture – focus on changes in glycogen content during sexual maturation 2023/11
• Weekly observations of estuarine microbial assemblages during summer in the inner part of Ariake Bay, Japan: Microbial water-sediment coupling in turbid shallow waters. 2022/12
• 海の貧酸素化に対するサルボウガイの赤血球及び呼吸色素応答 2022/09
• 貧酸素耐性の異なる二枚貝３種の嫌気代謝過程の比較 2022/09
• 有明海産二枚貝に生息している共在細菌の探索と機能予測 2022/09
• 有明海産二枚貝11種の貧酸素耐性 〜簡易実験系に基づく評価〜 2022/09
• 光質が異なる LED 照射下におけるスサビノリ殻胞子嚢の成熟と殻胞子放出 2022/06
• 有明海産二枚貝と共在している宿主特異的な細菌の探索 2022/05
• Isolation of sake yeast strains from Ariake Sea tidal flats and evaluation of their brewing characteristics. 2022/04
• 貧酸素継続期間の違いが有明海底生微生物組成と物質循環に与える影響 2022/03
• 夏季、有明海の水柱および底質表層における細菌叢の短期動態 2022/03
• Population dynamics of a hypoxia-tolerant bivalve: A comparison of two sites in the inner part of Ariake Bay, Japan. 2021/11
• 佐賀大学オリジナル清酒「悠々知酔」に関わる微生物開発について 2021/11
• 底層水の貧酸素化期間が異なると微生物群集と物質循環も移り変わりながら変化する 2021/11
• 貧酸素水暴露によるサルボウガイの赤血球濃度の変化〜貧酸素強度の違いに着目して〜 2021/09
• リンゴ酸高生産酵母の醸造特性評価および変異遺伝子の探索 2021/09
• 有明海の生き物と海の貧酸素化〜潮下帯に焦点をあてて〜 2021/08
• Breeding sake yeast and identification of mutation patterns by synchrotron light irradiation. Journal of Bioscience and Bioengineering 2021/06
• Genetic diversity and population structure of razor clam Sinonovacula constricta in Ariake Bay, Japan, revealed using RAD-Seq SNP markers 2021/04
• Estimation of historical changes in benthic invertebrate assemblages in the Suigetsu-ko lake using marine historical ecology 2020/09
• 新規なアゲマキガイ保護区の検証〜干満差を利用した澪筋維持施設の活用〜 2020/03
• Biochemical investigation on natural diets of the long spined-sea urchin Diadema setosum 2020/01
• A new species of Polyodontes (Annelida: Acoetidae) from Kochi, Shikoku Island, Japan. 2019/11
• Profiling gene expression responses of the blood clam Anadara kagoshimensis to anoxia by de novo RNA-Seq analysis 2019/11
• 海の貧酸素化がベントス群集に与える影響 〜直接効果と間接効果〜 2019/11
• Biophysical interactions on the succession of subtidal benthic community in the inner part of Ariake Bay. 2019/09
• Distribution of 24 species of polychaetes in the Ariake Sea, Kyushu, Japan: 10-year change based on surveys in 1997, 2002 and 2007 2019/08
• Monster larvae of deep-sea shrimp collected in the western North Pacific 2019/05
• Differences in the damage caused by hypoxia to the macrobenthic communities in source regions of hypoxic water and in regions with advected hypoxic water. 2018/12
• Red blood cells characteristics of Scapharca kagosimensis and change in red blood cell concentration after hypoxic water exposure. 2018/09
• 沿岸域の貧酸素化に伴う魚類-埋在性底生動物の捕食-被食関係の変化 2018/03
• 岩礁域の生物多様性と水産的機能を評価する～神奈川県長井地先で見られた生物相の変動を例に～ 2018/03
• Differences in the sensitivity of macrobenthic communities to hypoxia between its source and advection regions. 2017/11
• An indirect effect of hypoxia on the succession of subtidal benthic community: an evaluation in the inner par of Ariake Bay. 2017/11
• How does change occurs in exploitation of infaunal benthos by a bottom-feeding fishes and crustaceans with seasonal hypoxia? 2017/11
• Quantifying predation pressure on macrobenthos in the soft bottom subtidal habitat. 2017/09
• Effect of spatial distribution of sedimentary environment on macrobenthic community in spring season in Isahaya Bay, Japan 2017/03
• Widespread dispersal and bio-accumulation of toxic microcystins in benthic marine ecosystems. 2017/01
• 海中林の衰退に伴う底生動物群集の変化: 相模湾長井地先における人工礁・天然礁の比較 2016/09
• 有明海奥部海域における底生生物群集の季節変化 〜季節的に発生する貧酸素水への応答〜 2016/09
• 活動報告: 多毛類若手の会 2016/06
• Implications of changes in the benthic environment and decline of macro-benthic communities in the inner part of Ariake Bay in relation to seasonal hypoxia. 2015/11
• Contribution of the development of the stratification of water to the expansion of Dead Zone: a sedimentological approach. 2015/10
• 有明海湾奥部における底生生物の餌利用の変化: 餌資源としての浮遊珪藻類の寄与. 2015/09
• 諫早湾における底質環境の傾度および貧酸素化が底生動物群集に与える影響 2015/09
• 有明海における珪藻現存量および沈降量の季節変化 2015/09
• Short-Term Dynamics of NH4-N Affected by Water Discharged from a Reservoir of Reclaimed Land into Isahaya Bay, Kyushu, Japan 2015/05
• Short-term dynamics of cyanobacterial toxins (microcystins) following a discharge from a coastal reservoir in Isahaya Bay, Japan. 2015/03
• 撹乱強度に伴う優占二枚貝の機能の変化 2015/03
• Impact of seasonal occurrence of hypoxia on the spatial distributions of bottom environment and macrobenthic communities. 2014/10
• Widespread dispersal and accumulation of toxic substances, microcystins produced by freshwater cyanobacteria in Ariake Bay, the west coast of Kyushu, Japan. 2014/10
• 諫早湾調整池におけるアオコの優占種変遷に関わる環境要因 2014/09
• 貧酸素強度の違いがヒメカノコアサリの個体群動態へ及ぼす影響 2014/09
• 有明海奥部海域における底生生物群集と環境要因の空間的な関係 ~季節的に生じる貧酸素化の影響~ 2014/09
• 成層期および混合期における有明海奥部海域の底生生物群集の分布の比較 2014/03
• 海底堆積物の分布から推定する有明海奥部における大規模な赤潮および貧酸素水の発生メカニズム 2013/09
• 異なる底質環境下の底生生物群集に対する貧酸素化の影響 2013/09
• 諫早湾におけるアオコ毒素ミクロシスチンの底生生態系への蓄積 2013/09
• 密度成層の発達が有明海奥部海域の底質環境と底生生物群集へ及ぼす影響 2013/06
• Influence of well-developed water stratification on the bottom environment and the macro-benthic community structure. 2012/12
• Occurrence of red tides and hypoxic water in an encolsed coastal sea, Ariake Bay, without progressing of eutrophication. 2012/12
• 梅雨期に卓越する密度成層が沿岸閉鎖性海域のベントス群集へ与える影響 2012/10
• 有明海奥部海域の海底堆積物および底生生物群集の分布の特徴から推測される近年の海水構造の変化 2012/09
• 有明海奥部における底生生物群集の特徴 2011/09

Original Articles

• Growth and survival of Sinonovacula constricta on the coast of Saga Prefecture – focus on changes in glycogen content during sexual maturation;　2023/11
  ANNOUNCEMENT INFO.;　NIPPON SUISAN GAKKAISHI, 89, 6, 529-536
  AUTHOR;　Ryo Orita, Kousuke Shigehisa, Masanori Tsukuda
  
• Weekly observations of estuarine microbial assemblages during summer in the inner part of Ariake Bay, Japan: Microbial water-sediment coupling in turbid shallow waters.;　2022/12
  ANNOUNCEMENT INFO.;　Microbes and Environments, 37, 2, In Press
  AUTHOR;　Orita, R., Yoshida, K., Terazono, H., Nagano, Y., Goto, M., Kimura, K., & Kobayashi, G
  
• 光質が異なる LED 照射下におけるスサビノリ殻胞子嚢の成熟と殻胞子放出;　2022/06
  ANNOUNCEMENT INFO.;　, 70, 1, 47-54
  AUTHOR;　
  
• Isolation of sake yeast strains from Ariake Sea tidal flats and evaluation of their brewing characteristics.;　2022/04
  ANNOUNCEMENT INFO.;　The Journal of General and Applied Microbiology, 68, 1, 30-37
  AUTHOR;　Baba, S., Sawada, K., Orita, R., Kimura, K., Goto, M, & Kobayashi, G.
  
• Population dynamics of a hypoxia-tolerant bivalve: A comparison of two sites in the inner part of Ariake Bay, Japan.;　2021/11
  ANNOUNCEMENT INFO.;　Plankton & Benthos Research, 16, 4, 249-256
  AUTHOR;　
  
• Breeding sake yeast and identification of mutation patterns by synchrotron light irradiation. Journal of Bioscience and Bioengineering;　2021/06
  ANNOUNCEMENT INFO.;　Journal of Bioscience and Bioengineering, 132, 3, 265-270
  AUTHOR;　
  
• Genetic diversity and population structure of razor clam Sinonovacula constricta in Ariake Bay, Japan, revealed using RAD-Seq SNP markers;　2021/04
  ANNOUNCEMENT INFO.;　Scientific Reports, 11, 7761
  AUTHOR;　Orita, R., Nagano, Y., Kawamura, Y., Kimura, K., & Kobayashi, G
  
• Biochemical investigation on natural diets of the long spined-sea urchin Diadema setosum;　2020/01
  ANNOUNCEMENT INFO.;　NIPPON SUISAN GAKKAISHI, 86, 9-19
  AUTHOR;　Niwa, K., Kurogi, H., Sawayama, S., Kjigaya, Y., Teramoto, W., Orita, R., Ishihi, Y., Shibuno, T., Hayakawa, J., Chow, S.
  
• A new species of Polyodontes (Annelida: Acoetidae) from Kochi, Shikoku Island, Japan.;　2019/11
  ANNOUNCEMENT INFO.;　Species Diversity, 24, 275-279
  AUTHOR;　Jimi, N., Tomioka, S., Orita, R., Kajihara, H.
  
• Distribution of 24 species of polychaetes in the Ariake Sea, Kyushu, Japan: 10-year change based on surveys in 1997, 2002 and 2007;　2019/08
  ANNOUNCEMENT INFO.;　Japanese Journal of Benthology, 74, 43-63
  AUTHOR;　
  
• Monster larvae of deep-sea shrimp collected in the western North Pacific;　2019/05
  ANNOUNCEMENT INFO.;　Aquatic animals, 2019, AA2019-1-10
  AUTHOR;　Seinen Chow, Takashi Yanagimoto, Kooichi Konishi, Ryo Orita, Tomoyuki Komai, Hironori Komatsu
  
• Differences in the damage caused by hypoxia to the macrobenthic communities in source regions of hypoxic water and in regions with advected hypoxic water.;　2018/12
  ANNOUNCEMENT INFO.;　Journal of Oceanography, 74, 607-617
  AUTHOR;　Ishimatsu, S., Komorita, T., Orita, R., Tsutsumi, H.
  
• Effect of spatial distribution of sedimentary environment on macrobenthic community in spring season in Isahaya Bay, Japan;　2017/03
  ANNOUNCEMENT INFO.;　, 71, 1-9
  AUTHOR;　Ishimatsu, S., Komorita, T., Orita, R., Tsutsumi, H.
  
• Widespread dispersal and bio-accumulation of toxic microcystins in benthic marine ecosystems.;　2017/01
  ANNOUNCEMENT INFO.;　Chemosphere, 167, 492-500
  AUTHOR;　Umehara, A., Takahashi, T., Komorita, T., Orita, R., Choi, J. W., Takenaka, R., Mabuchi, R.,Park, H.D., Tsutsumi, H.
  
• Implications of changes in the benthic environment and decline of macro-benthic communities in the inner part of Ariake Bay in relation to seasonal hypoxia.;　2015/11
  ANNOUNCEMENT INFO.;　Plankton & Benthos Research, 10, 4, 187-201
  AUTHOR;　Tsutsumi,H., Takamatsu, A., Nagata, S., Orita, R., Umehara, A., Komorita, T., Shibanuma, S., Takahashi,T., Komatsu, T., Montani, S.
  
• Contribution of the development of the stratification of water to the expansion of Dead Zone: a sedimentological approach.;　2015/10
  ANNOUNCEMENT INFO.;　Estuarine, Coastal and Shelf Science, 164, 204-213
  AUTHOR;　Orita, R., Umehara, A., Komorita, T., Choi, J. W., Montani, S., Komatsu, T., Tsutsumi, H.
  
• Short-Term Dynamics of NH4-N Affected by Water Discharged from a Reservoir of Reclaimed Land into Isahaya Bay, Kyushu, Japan;　2015/05
  ANNOUNCEMENT INFO.;　, 38, 3, 75-80
  AUTHOR;　
  
• Short-term dynamics of cyanobacterial toxins (microcystins) following a discharge from a coastal reservoir in Isahaya Bay, Japan.;　2015/03
  ANNOUNCEMENT INFO.;　Marine pollution bulletin, 92, 73-79
  AUTHOR;　Umehara, A., Komorita, T., Tai, A., Takahashi, T., Orita, R., Tsutsumi, H.
  

General Lectures

• 海の貧酸素化に対するサルボウガイの赤血球及び呼吸色素応答;　2022/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 貧酸素耐性の異なる二枚貝３種の嫌気代謝過程の比較;　2022/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 有明海産二枚貝に生息している共在細菌の探索と機能予測;　2022/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 有明海産二枚貝11種の貧酸素耐性 〜簡易実験系に基づく評価〜;　2022/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 有明海産二枚貝と共在している宿主特異的な細菌の探索;　2022/05
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 貧酸素継続期間の違いが有明海底生微生物組成と物質循環に与える影響;　2022/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 夏季、有明海の水柱および底質表層における細菌叢の短期動態;　2022/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 貧酸素水暴露によるサルボウガイの赤血球濃度の変化〜貧酸素強度の違いに着目して〜;　2021/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• リンゴ酸高生産酵母の醸造特性評価および変異遺伝子の探索;　2021/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Estimation of historical changes in benthic invertebrate assemblages in the Suigetsu-ko lake using marine historical ecology;　2020/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　Yasushi Miyamoto, Masanori Taru, Ryo Orita, Takao Suzuki, Osamu Tominaga, Gen Kanaya
  
• 新規なアゲマキガイ保護区の検証〜干満差を利用した澪筋維持施設の活用〜;　2020/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Profiling gene expression responses of the blood clam Anadara kagoshimensis to anoxia by de novo RNA-Seq analysis;　2019/11
  ANNOUNCEMENT INFO.;　The Forth Asian Marine Biology Symposium
  AUTHOR;　Orita. R., Kimura, K., Nagano, Y., Kawamura, Y., Goto., M., Kobayashi, G.
  
• Red blood cells characteristics of Scapharca kagosimensis and change in red blood cell concentration after hypoxic water exposure.;　2018/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　Ryo Orita, Kei Kimura, Yoshio Kawamura
  
• 沿岸域の貧酸素化に伴う魚類-埋在性底生動物の捕食-被食関係の変化;　2018/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 岩礁域の生物多様性と水産的機能を評価する～神奈川県長井地先で見られた生物相の変動を例に～;　2018/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Differences in the sensitivity of macrobenthic communities to hypoxia between its source and advection regions.;　2017/11
  ANNOUNCEMENT INFO.;　The Third Asian Marine Biology Symposium
  AUTHOR;　Komorita, T., Ishimatsu, S., Orita, R., Jaingam, W., Tsutsumi, H.
  
• An indirect effect of hypoxia on the succession of subtidal benthic community: an evaluation in the inner par of Ariake Bay.;　2017/11
  ANNOUNCEMENT INFO.;　The Third Asian Marine Biology Symposium
  AUTHOR;　Yoshino, K., Kimura, K., Fiji, N., Orita, R., Katano, T., Ito, Y., Yamada, K.
  
• How does change occurs in exploitation of infaunal benthos by a bottom-feeding fishes and crustaceans with seasonal hypoxia?;　2017/11
  ANNOUNCEMENT INFO.;　The Third Asian Marine Biology Symposium
  AUTHOR;　Orita, R., Yoshino, K., Kimura, K
  
• Quantifying predation pressure on macrobenthos in the soft bottom subtidal habitat.;　2017/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　Orita R, Yoshino K, Kimura K, Fujii N, Hayami Y
  
• 海中林の衰退に伴う底生動物群集の変化: 相模湾長井地先における人工礁・天然礁の比較;　2016/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 活動報告: 多毛類若手の会;　2016/06
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 有明海湾奥部における底生生物の餌利用の変化: 餌資源としての浮遊珪藻類の寄与.;　2015/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 諫早湾における底質環境の傾度および貧酸素化が底生動物群集に与える影響;　2015/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 有明海における珪藻現存量および沈降量の季節変化;　2015/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 撹乱強度に伴う優占二枚貝の機能の変化;　2015/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Impact of seasonal occurrence of hypoxia on the spatial distributions of bottom environment and macrobenthic communities.;　2014/10
  ANNOUNCEMENT INFO.;　
  AUTHOR;　Orita, R., Umehara, A., Komorita, T., Tsutsumi, H.
  
• Widespread dispersal and accumulation of toxic substances, microcystins produced by freshwater cyanobacteria in Ariake Bay, the west coast of Kyushu, Japan.;　2014/10
  ANNOUNCEMENT INFO.;　The Second Asian Marine Biology Symposium
  AUTHOR;　Umehara, A., Takahashi, T., Komorita, T., Orita, R., Tsutsumi, H.
  
• 諫早湾調整池におけるアオコの優占種変遷に関わる環境要因;　2014/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 貧酸素強度の違いがヒメカノコアサリの個体群動態へ及ぼす影響;　2014/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 成層期および混合期における有明海奥部海域の底生生物群集の分布の比較;　2014/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 海底堆積物の分布から推定する有明海奥部における大規模な赤潮および貧酸素水の発生メカニズム;　2013/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 異なる底質環境下の底生生物群集に対する貧酸素化の影響;　2013/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 諫早湾におけるアオコ毒素ミクロシスチンの底生生態系への蓄積;　2013/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 密度成層の発達が有明海奥部海域の底質環境と底生生物群集へ及ぼす影響;　2013/06
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• Influence of well-developed water stratification on the bottom environment and the macro-benthic community structure.;　2012/12
  ANNOUNCEMENT INFO.;　The first Asian Marine Biology Symposium
  AUTHOR;　Orita, R., Murasaki, M., Komorita, T., Tsutsumi, H.
  
• Occurrence of red tides and hypoxic water in an encolsed coastal sea, Ariake Bay, without progressing of eutrophication.;　2012/12
  ANNOUNCEMENT INFO.;　The first Asian Marine Biology Symposium
  AUTHOR;　Tsutsumi, H., Komorita, T., Takahashi, T., Umehara, A., Orita, R., Montani, S.
  
• 梅雨期に卓越する密度成層が沿岸閉鎖性海域のベントス群集へ与える影響;　2012/10
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 有明海奥部海域の海底堆積物および底生生物群集の分布の特徴から推測される近年の海水構造の変化;　2012/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 有明海奥部における底生生物群集の特徴;　2011/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  

Others

• Biophysical interactions on the succession of subtidal benthic community in the inner part of Ariake Bay.;　2019/09
  ANNOUNCEMENT INFO.;　Proceedings of CWMD International Conference 2019, 496-504
  AUTHOR;　Yoshino, K., Kimura, K., Fujii, N., Orita, R., Katano, T., Ito, Y., Yamada, K.
  

Invited Lecture, Special Lecture

• 佐賀大学オリジナル清酒「悠々知酔」に関わる微生物開発について;　2021/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 底層水の貧酸素化期間が異なると微生物群集と物質循環も移り変わりながら変化する;　2021/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 有明海の生き物と海の貧酸素化〜潮下帯に焦点をあてて〜;　2021/08
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 海の貧酸素化がベントス群集に与える影響 〜直接効果と間接効果〜;　2019/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• マクロベントスにスポットを当てて沿岸海域の環境問題を考える.;　2017/06
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 有明海奥部海域における底生生物群集の季節変化 〜季節的に発生する貧酸素水への応答〜;　2016/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 有明海奥部海域における底生生物群集と環境要因の空間的な関係 ~季節的に生じる貧酸素化の影響~;　2014/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;