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Yazawa Ryosuke
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Research Areas 【 display / non-display 】
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Life Science / Aquatic life science / Marine/Aquatic life sciences, Fish Physiology, Aquaculture, Fisheries, Fish Breeding, Marine Aquaculture, Fish Biotechnolog
Papers 【 display / non-display 】
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Cryopreservation of testes in red snapper and its effects on apoptosis, germ cell-specific gene expression, DNA methylation, and xenogeneic germ cell transplantation.
Mutita Joeythong, Kensuke Ichida, Ryosuke Yazawa, Atra Chaimongkol, Surintorn Boonanuntanasarn. , 2026.08
Aquaculture
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Cold-shock induction of triploidy in the Japanese jack mackerel (Trachurus japonicus)
Tetsuro Morita, Suwarak Wongtho, Masato Harada, Yoshiyuki Matsushita, Ryosuke Yazawa & Goro Yoshizaki , 2026.03
Fisheries Science
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イシガキフグChilomycterus reticulatus人工種苗の生産
森田 哲朗, さかなクン, 齋藤 亨一朗, 阿部 泰画, 松下 芳之, 川村 亘, 矢澤 良輔 , 2025.12
水産増殖
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Bluefin tuna sperm production is hastened by surrogacy in small Euthynnus.
Wataru Kawamura, Ryosuke Yazawa, Yutaka Takeuchi, Shigeharu Kamio, Kensuke Ichida, Ricardo Shohei Hattori, Tetsuro Morita, Makoto Hayashi, Goro Yoshizaki. , 2024.10
Nat. Commun.
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Reproductive Characteristics and Suitability of Sterile dead end Knockout Nibe Croaker as a Recipient for Intraperitoneal Germ Cell Transplantation.
Ryosuke Yazawa, Kyoichiro Saitoh, Akihiro Yamauchi, Onur Eyüboğlu, Kana Ozawa, Wataru Kawamura, Tetsuro Morita, Yutaka Takeuchi, Goro Yoshizaki , 2024.05
Marine biotechnology (New York, N.Y.)
Books 【 display / non-display 】
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魚類発生学の基礎
大久保 範聡, 吉崎 悟朗, 越田 澄人, 岩松 鷹司, 山羽 悦郎, 荒井 克俊, 橋本 寿史, 清水 貴史, 日比 正彦, 山本 直之, 田中 実, 鈴木 徹, 磯貝 純夫, 菊池 潔, 木下 政人, 亀井 保博, 小林 麻己人, 森友 忠昭, 斉藤 絵里奈, 藤田 深里, 出口 友則, 矢澤 良輔, 竹内 裕 , 2018.10
恒星社厚生閣 , 0-0
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水産遺伝育種学
片山 直人・壁谷 尚樹・竹内 裕・矢澤 良輔・吉崎 悟朗 , 2017.05
東北大学出版会 , 215-227
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FISH DISEASES UNESCO-EOLSS
Ryosuke Yazawa , 2016.08
Eolss Publishers Co. Ltd., , Establishment of Disease-resistant Fish , 0-0
Grant-in-Aid for Scientific Research 【 display / non-display 】
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Project Period (FY)： 2026/06 - 2028/03 Investigator(s): 矢澤 良輔
Grant-in-Aid for challenging Research (Exploratory) Principal Investigator 26K23032
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魚のケガを可視化する～魚類種苗の生残向上に向けた新手法の開発～
Project Period (FY)： 2024/04 - 2028/03 Investigator(s): 森田 哲朗
Grant-in-Aid for Scientific Research(B) Co-Investigator 24K01835
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Project Period (FY)： 2023/04 - 2027/03 Investigator(s): 矢澤良輔
Grant-in-Aid for Scientific Research(B) Principal Investigator 23K26983
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魚類生殖幹細胞の予見的同定：魚類生殖細胞操作技術の高効率化を目指して
Project Period (FY)： 2023/04 - 2027/03 Investigator(s): 吉崎 悟朗
Grant-in-Aid for Scientific Research(A) Co-Investigator 23H00344
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Development of a new breeding strategy which enables intensive selection in aquaculture
Project Period (FY)： 2021/04 - 2024/03 Investigator(s): Hosoya Sho
Grant-in-Aid for Scientific Research(B) Co-Investigator 21H02279
We have attempted to develop a method for detecting deleterious mutations in fish genomes using the chub mackerel (Scomber japonicus) as a model. To identify nonsynonymous substitutions that are potentially deleterious, we constructed a de novo T2T level genome assembly of chub mackerel with gene functional annotation. Using this genome sequence, we have detected polymorphisms in wild chum mackerel individuals. We are now identifying deleterious non-synonymous mutations using SNPeff. The analysis has been delayed due to low commercial catches of the species and other factors.
We are also attempting to estimate the deleterious effects of mutations in the ultra-conserved region within body fish (i.e., Actinopterygii). The number of fish species for which reference sequences are available has increased significantly compared to the original plan, requiring more sequence analysis than expected, so the project has not been completed.
Lesson Subject 【 display / non-display 】
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Lesson Subject（Undergraduate）
Special Seminar in Aquatic Bioscience
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Research in Aquatic Bioscience
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Lesson Subject（Graduate School）
Special Seminar in Aquatic Bioscience
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Research in Aquatic Bioscience