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Yazawa Ryosuke

Job title: Professor
Department: Department of Marine Biosciences
Degree: Doctor
Major: 水産学

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Researcher ID Researchmap OACIS著者情報

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Research Interests 【 display / non-display 】

  • 耐病性

  • トランスジェニックヒラメ

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Research Areas 【 display / non-display 】

  • Life Science / Aquatic life science  / Marine/Aquatic life sciences, Fish Physiology, Aquaculture, Fisheries, Fish Breeding, Marine Aquaculture, Fish Biotechnolog

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Papers 【 display / non-display 】

  • 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.

    DOI

  • 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.)

    DOI

  • Development of spermatogonial cell transplantation in barramundi (Asian seabass: Lates calcarifer)

    Kensuke Ichida, Reoto Tani, Somkiat Sreebun, Araya Jangprai, Pailin Pasomboon, Ryosuke Yazawa, Goro Yoshizaki, Surintorn Boonanuntanasarn , 2024.01

    Aquaculture

    DOI

  • A novel liver-specific immunoglobulin heavy chain-like gene in a cartilaginous fish.

    Hidehiro Kondo, Haruka Kamei, Fuyuka Murotani, Reiko Nozaki, Ryosuke Yazawa, Reoto Tani, Keiichiro Koiwai, Ikuo Hirono , 2023.12

    Fish and shellfish immunology reports

    DOI

    OACIS Paper URL

  • Polymerase chain reaction-based species identification of chub mackerel (Scomber japonicus), blue mackerel (Scomber australasicus), and their hybrids using a species-specific InDel marker.

    Ryosuke, Y. R., Tani; Wataru, Kawamura; Onur, Eyuboglu; Tetsuro, Morita , 2023

    Fish Genetics and Breeding Science

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Books 【 display / non-display 】

  • 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

  • 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

  • FISH DISEASES UNESCO-EOLSS

    Ryosuke Yazawa , 2016.08

    Eolss Publishers Co. Ltd., , Establishment of Disease-resistant Fish , 0-0

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Grant-in-Aid for Scientific Research 【 display / non-display 】

  • 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 

  • 小型のコシナガ代理親魚にクロマグロの卵と精子を生産させる。

    Project Period (FY)： 2023/04  -  2027/03  Investigator(s): 矢澤良輔

    Grant-in-Aid for Scientific Research(B)  Principal Investigator  23K26983 

  • 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 

  • 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.

  • Establishment of tasty fish strain using surrogate broodstock

    Project Period (FY)： 2020/04  -  2023/03  Investigator(s): Yoshizaki Goro

    Grant-in-Aid for Scientific Research(A)  Co-Investigator  20H00430 

    We tested the feasibility of breeding individuals with high total lipids using the marine fish, Nibe, as a model. First, the total lipids of wild individuals were analyzed, and at the same time, the gonads of these individuals were cryopreserved in liquid nitrogen. After identifying individuals with high and low total lipids, their germ cells were transplanted into infertile recipients. They were then allowed to mature and then subjected to mating experiments. The results showed that the next generation derived from the recipients, receiving germ cells of individuals with high total lipids showed significantly higher total lipids than the next generation derived from the germ cells of individuals with low total lipids. These results indicate that fish fat content is inherited, which has been conventionally thought to be greatly affected by diet.

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Lesson Subject 【 display / non-display 】

  • Special Seminar in Aquatic Bioscience

  • Research in Aquatic Bioscience

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