| Project/Area Number |
15K14796
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Aquatic bioproduction science
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| Research Institution | Fisheries Research and Education Agency (2016)
National Fisheries University (2015) |
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Principal Investigator |
Yamasaki Yasuhiro 国立研究開発法人水産研究・教育機構, 水産大学校, 講師 (40598471)
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| Research Collaborator |
KISHIOKA Masanobu
TAGA Shigeru
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | アサリ種苗生産 / アルギン酸 / 餌料用微細藻類 / 成長促進 / 併用給餌 / ナンノクロロプシス / キートセロス / プレバイオティクス / アサリ / 種苗生産 / 水産増養殖 |
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| Outline of Final Research Achievements |
The annual catch of the Manila clam Ruditapes philippinarum in coastal waters continues to decrease drastically. Thus, the conservation of the clam resource and a stable market supply depend on the development of a mass culture method for the clam. In this study, we examined the effects of alginate-hydrolysates (AHs) as a diet of juvenile Manila clams, and verify the role of AHs on the growth promotion of R. philippinarum. Our results indicate that supplementing a diet of Nannochloropsis oculata and/or Eutreptiella sp. with AHs can promote the growth of R. philippinarum. In addition, analysis of bacterial flora suggested that rearing conditions affected bacterial flora in digestive canal of clams. Thus, rearing clams on an algal diet supplemented with AHs may be an inexpensive way to shorten the rearing period of the juvenile clams and other bivalves, although we have not yet identified the underlying mechanisms behind these effects.
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