Fiscal Year
2013
Title
Intermediate culture of Manila clam spat and stocking efficiency of the spats in Mangoku-ura
Project and Theme
Project 1. Study on ecological succession of fisheries ground
Representative Organization: Tohoku University
Theme4. Aquaculture environment in the coastal water of Miyagi Prefecture and innovation of aquaculture systemRepresentative person | Makoto Osada |
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Organization | Tohoku University |
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Department | Graduate School of Agricultural Science |
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Research InformationPeriod and Interval2013/08/01 - 2013/12/31
Research Area
CategoryField survey
OverviewThe aim of the project is to demonstrate the efficient Manila clam seed production and to contribute to sustainable clam fishery. Mangoku-ura where formation of tideland is planed is emploied as a model of water for the experiment. The settled spats produced from adalut Manila clam of Mangoku-ura origin is introduced into the advanced system for intermediate culture in Mangoku-ura to verify an intensive and efficient production by the system. The cultured spats are stocked on the tideland by various methods to verify a high stocking efficiency. The project is conducted by the collaboration with Prefectural government, fishery cooperative and neighboring high school for fishery.
Overview of the Observation
Research Point Table
Point | Name | Mangoku-ura |
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Coordinates | 38.414803,141.378092 |
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Results and Future PlanThe verification experiment of Manila clam seed production is concentrated in an efficient intermediate culture of seed using a new devise FLUPSY, because of delay of formation of tideland. It took 100 days to raise the seed of 1 mm to 10 mm, which is suitable for the stocking seed, and survival rate during the period was low with 25%. On the other hand the seed of 2 mm grew to 10 mm for shorter period of 60 days with 50 % of higher survival rate. The intermediate cultured seeds with 10 mm are cultured and stored in the net bag with gravel and pulverized oyster shell at tidal zone.
Investigation Item and Data Acquisition
Investigation Item | Data Acquisition |
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Growth in the system | Growth data of the spat in the system |
Reference
Person in charge of Investigation
Representative person | Makoto Osada |
Organization | Tohoku University |
Department | Graduate School of Agricultural Science |
Keywords
Fiscal Year | 2013 |
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Organization | Tohoku University |
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Category | Field survey |
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Research Area | Ishinomaki Bay |
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Discipline | Ocean environment -> Plant pigments
Ocean biology / Ocean ecology -> Physiology
Ocean biology / Ocean ecology -> Mollusks
Ocean biology / Ocean ecology -> Plankton
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