2022 Fiscal Year Final Research Report
Development of marine planktonic copepod production technology using microbial food chain starting from food waste
Project/Area Number |
21K14902
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Research Category |
Grant-in-Aid for Early-Career Scientists
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Allocation Type | Multi-year Fund |
Review Section |
Basic Section 40030:Aquatic bioproduction science-related
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Research Institution | Soka University |
Principal Investigator |
Takayama Yoshiki 創価大学, 理工学部 プランクトン工学研究所, 助教 (00897605)
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Project Period (FY) |
2021-04-01 – 2023-03-31
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Keywords | 海産浮遊性カイアシ類 / 繊毛虫 / 食品廃棄物 / プランクトン工学 / 生物餌料 / 卵生産 |
Outline of Final Research Achievements |
The isolated ciliate Euplotes vannus was fed to planktonic copepods (Acartia steueri, Oithona oculata, Pseudodiaptomus nihonkaiensis) . A. steueri had a decreased survival rate and stopped egg production in the ciliate food condition. The number of eggs produced by P. nihonkaiensis was half that of the microalgae condition. The survival rate of O. oculata in the ciliate condition was higher than that in the microalgae condition, and the number of eggs was similar to that in the microalgae condition. It was suggested that O. oculata is suitable for the proposed process using ciliates as food.
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Free Research Field |
水産増殖学
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Academic Significance and Societal Importance of the Research Achievements |
今日までは、微細藻類を餌料とした、生食食物連鎖を利用したカイアシ類培養のみであったが、本研究では食品廃棄物を起点とした微生物食物連鎖の駆動によってカイアシ類培養を行う全く新たな試みであり、国際的に前例がない(図 3)。また、繊毛虫は必須脂肪酸生合成能を有することから、繊毛虫を介することによって、合成された必須脂肪酸がカイアシ類へ転送される(Trophic upgrading)。このような自然界での現象を人工環境下での培養へ応用した点に独自性がある。
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