Research Interests 【 display / non-display 】

Research Interests 【 display / non-display 】

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Research Areas 【 display / non-display 】

Research Areas 【 display / non-display 】

Papers 【 display / non-display 】

Papers 【 display / non-display 】

• Enzymatic basis underlying the biosynthesis of Δ7-desaturated C22 polymethylene-interrupted fatty acids across marine invertebrates.

  Yingying Peng, Ai Iinuma, Yo Nakano, Michihiro Suezawa, Yutaka Haga, Naoki Kabeya , 2026.04

  Biochimica et biophysica acta. Molecular and cell biology of lipids

  DOI

• Methyl-end desaturases determine the capability for de novo biosynthesis of polyunsaturated fatty acids in bivalves.

  Naoki Kabeya, Marc Ramos-Llorens, Yo Nakano, André Gomes-Dos-Santos, Amílcar Teixeira, Megumu Fujibayashi, Juan G Haro, Juan C Navarro, L Filipe C Castro, Yutaka Haga, Óscar Monroig , 2025.04

  Biochimica et biophysica acta. Molecular and cell biology of lipids

  DOI

• Enzymes enabling the biosynthesis of various C20 polyunsaturated fatty acids in a sea urchin Hemicentrotus pulcherrimus.

  Yingying Peng, Yutaka Haga, Naoki Kabeya , 2025.01

  Open biology

  DOI

• A complete biosynthetic pathway of the long-chain polyunsaturated fatty acids in an amphidromous fish, ayu sweetfish Plecoglossus altivelis (Stomiati; Osmeriformes).

  Bo Zhao, Yingying Peng, Yuki Itakura, Myriam Lizanda, Yutaka Haga, Shuichi Satoh, Juan C Navarro, Óscar Monroig, Naoki Kabeya , 2024.05

  Biochimica et biophysica acta. Molecular and cell biology of lipids

  DOI

• Fatty acid contents and its compositions of mesozooplankton community in the Kuroshio Current and neighboring waters

  Toru Kobari, Nao Kominato, Reo Ishimaru, Masafumi Kodama, Gen Kume, Masaharu Hanai, Asuka Nitta, Naoki Kabeya , 2026.01

  Progress in Oceanography

  DOI

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Books 【 display / non-display 】

Books 【 display / non-display 】

• 水産遺伝育種学

  壁谷　尚樹 , 2017.03

  東北大学出版会 , 第12章　遺伝子・細胞操作と水産育種における応用 , 0-0

• Research and Development in Aquaculture Nutrition

  Naoki Kabeya , 2017

  Universidad Autónoma de Nuevo León , Diversification of Fads2 in finfish species: Implications for aquaculture. , 0-0

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

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

• Elucidation of EPA and DHA biosynthetic capacity of marine copepods in the ecosystem

  Project Period (FY)： 2022/04  -  2025/03  Investigator(s): 壁谷尚樹

  Grant-in-Aid for Scientific Research(B)  Principal Investigator  23K23698 

• Elucidation of polyunsaturated fatty acid biosynthetic capacity in copepods by using stable isotope techniques

  Project Period (FY)： 2021  -  2024  Investigator(s): 壁谷尚樹

  Strengthen international collaborative research(A)  Principal Investigator  20KK0348 

• 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.

• Studies on the development of non-fishmeal/non-fish oil feed for sustainable aquaculture

  Project Period (FY)： 2019/04  -  2023/03  Investigator(s): Satoh Shuichi

  Grant-in-Aid for Scientific Research(B)  Co-Investigator  19H03047 

  Basical research for development of non-fish meal/non-fish oil feed for marine fish was conducted to develop the sustainable aquafeed. Marine fish require EPA and/or DHA as essential fatty acids. Therefore, non-fish meal/non-fish oil feed for marine fish was developed by using the dried powder of Schizochitrium which is micro algae rich in DHA. Firstly, a feeding experiment was conducted by using the experimental diet formulated with Schizochitrim powder at the level of DHA requirement. After a feeding trial, identical result was obtained between fish meal/fish oil based diet and non-fish meal/non-fish oil diet with Schizochitrium. A similar kind of experiment was conducted with yellowtail, however, palatability of the diet was too weak to grow. Thefore feed stimulant supplementation improved the feeding activity and resulted a similar growth as fish oil diet.

• The role of copepods as primary producers of polyunsaturated fatty acids

  Project Period (FY)： 2019/04  -  2022/03  Investigator(s): Kabeya Naoki

  Grant-in-Aid for Young Scientists  Principal Investigator  19K15908 

  The biosynthetic capabilities of polyunsaturated fatty acids (PUFA) in copepods were elucidated in the present project. The copepods were tiny crustacean species mainly inhabiting in the aquatic environment. Some PUFA such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are physiologically essential nutrients for many animals, although most of EPA and DHA are originated from marine environment. Therefore, understanding PUFA production mechanism in the marine ecosystem is important. In the present project, we have confirmed that particular species within copepods possessed high biosynthetic capabilities of PUFA including EPA and DHA, and hence those species could be primary producers of PUFA in the marine ecosystem.

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Lesson Subject 【 display / non-display 】

Lesson Subject 【 display / non-display 】