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Concept for industrial oyster nursery parks in The Netherlands
De Pauw, N.; Claus, C.; Drinkwaard, A. (1989). Concept for industrial oyster nursery parks in The Netherlands, in: De Pauw, N. et al. (Ed.) Aquaculture: a biotechnology in progress: volume 1. pp. 993-1000
In: De Pauw, N. et al. (1989). Aquaculture: a biotechnology in progress: volume 1. European Aquaculture Society: Bredene. ISBN 90-71625-03-6. 1-592 pp., meer
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| Beschikbaar in | Auteurs |
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Documenttype: Lesdocument
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| Trefwoorden |
Eukaryotes > Animals > Invertebrates > Mollusca > Bivalvia > Shellfish > Oysters
Oysters
Technology
Marien/Kust |
| Auteurs | | Top |
- De Pauw, N., meer
- Claus, C., meer
- Drinkwaard, A.
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| Abstract |
Based on experience acquired in Belgium and The Netherlands, a concept for industrial oyster nursery parks has been developed by the multi-disciplinary project-group "MARIOS" (Mariculture Costerschelde = Eastern Scheldt). The oyster nursery parks are set up module-wise with a total production capacity of 25 or 50 million 35mm oysters (Ostrea edulis) per year. Depending on the site of implantation this means 5 or 10 culture units. Each unit spans two modules. The modules are designed for a production of 2.5 million 35mm oysters per year. The modules are fitted with twelve raceways for the placing of up-flow cylinders, containing the small oyster spat. Four large raceways can be used both for culturing the extra algal food in the first nursery phase and for ongrowth of the large oyster spat in the second nursery phase, using only natural seawater. The nursery culturing is divided in two phases of approximately 3 months each. Phase I (3 to 15mm) starts in May when the water temperature arrives above 10°C. Since the natural phytoplankton production may be too low during that period, feeding has to be made good by precultured phytoplankton. Phase II (15 to 35mm) starts in August and is based on the natural phytoplankton present in the water. During phase II, the juvenile oysters are grown on sieves, piled up in the large raceways with a horizontal flow of water, earlier used as algal culture basins. For the supply of seawater, the use of differences in tidal levels as well as pumping has been considered. With regard to exploitation, several production schemes have been evaluated up to the economic workability. |
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