Flat oysters. (Photo: Oysterecover)
European project progresses to recover flat oyster production
Thursday, April 04, 2013, 02:20 (GMT + 9)
Cetmar Foundation-Technology Centre of Marine Affairs and its partners as part of a European project aimed to recovering flat oyster (Ostrea edulis) production issued a report on the progress of resource development in hatcheries.
The document reflects the current state of the technique, explains the progress made by different projects that have been recently developed and traces the working lines identified as priorities for the immediate future, Cetmar informed.
The report presents the recent progress in the areas of broodstock adjustments and larval culture, including larval nutrition and farming techniques and protocols. Besides, it identifies the metamorphosis and settlement as two of the most problematic processes.
It also explains the optimal ranges of the most relevant physical parameters -- photoperiod and temperature -- and other variables, such as the amount and quality of the food given to the reproducers and the larvae themselves; and the results of the experiments carried out with certain chemicals on induction of flat oyster larvae fixing.
These results must be validated in different geographical areas and "may contribute significantly to the stabilization of the production of flat oyster seeds in hatcheries, which is necessary for a resource recovery initiative," stated Cetmar.
The report was the result of a workshop organized in the Netherlands by the Oysterecover project consortium, attended by representatives from seven countries of the European Union (EU), industry, environmental organizations and the administration.
At the meeting the relevance the resource is reaching internationally, from the commercial-ecological point of view, was also highlighted.
The main objective of the project, involving 15 organizations from several European countries, is to establish the scientific and technical basis for the recovery of the flat oyster production in Europe. To this end, the focus is directed to the development of strategies to address its main limitation, bonamiosis (a disease caused by the parasite Bonamia).
The proponents of the initiative claim that the recovery of the European flat oyster production can mean a great opportunity to increase the competitiveness of the European shellfish industry through its greater diversification.
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By Analia Murias