Rationale
The success of larviculture of marine finfish and several crustacean species still largely depends on the availability of high quality rotifers. A lot of research has been put into the mass production of Brachionus plicatilis. This research combined with observations in the hatcheries and the skills of the farmers, have led to different culture methods and protocols. Nevertheless, unpredictable crashes still occur. The outcome of several European research projects dealing with rotifer culture and use will be presented with suggestions for best practices.
This workshop is envisaged especially for hatchery managers and live feed producers who want to be informed on the latest results of aquaculture-relevant rotifer research.
This is an initiative in the framework of the EU research project ROTIGEN "Genetic implications in the production of rotifers in commercial finfish hatcheries"(http://allserv.Ugent.be/aquaculture/rend/rotigen).
Program
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Chairman: T. Abatzopoulos |
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Introduction of rotifer culture practices and problems in commercial European hatcheries. Key words:practical culture issues, symptoms of problems, possible causes, review of rotifer problems in hatcheries Didier Leclercq (Acui-T, France) |
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Introduction to the purpose of the workshop and rotifer research history especially at UGent and NTNU Key words: rotifer research at 2 universities Yngvar Olsen ( Norwegian University of Science and Technology, Trondheim, Norway ) |
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B. plicatilis species complex and presence in European hatcheries Key words: updating existing species/biotypes, tools (briefly) for identifying strains, distribution of biotypes in hatcheries, rotifer banks and distribution, problems from contamination, prevalence of some biotypes Alexander Triantafyllidis (Aristotle University of Thessaloniki , Thessaloniki , Greece ) |
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Chairman: O. Vadstein Culture methods Key words: Batch, Recirculation and semi-continuous, high density, pros & cons of each method, automation and monitoring Veerle Courtens ( Maricoltura di Rosignano Solvay srl , Livorno , Italy ) and Gunvor Oie (SINTEF, Trondheim , Norway ) |
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Effect of feed type and probiotic bacteria on different rotifer genotypes Key words : feed types, probiotic bacteria, growth rates Kristof Dierckens (Ghent University, Ghent, Belgium) |
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Rotifer quality Key words : manipulation of nutritional composition and microbial loading in function of cold and temperate water fish larvae, impact of microbial loading (quantitative and qualitative) on fish, protein and lipid levels/profiles, fatty acids Tony Broadhurst (Bloomtechnologies, La Coruña, Spain). |
| Lunch break |
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Chairman: O. Vadstein Results of questionnaire on rotifer culture methods and protocols Key words: current methods and protocols used in European hatcheries, frequency of crashes, use of stock cultures Kristof Dierckens (Ghent University, Ghent, Belgium) |
| Discussion and recommendations from the workshop |
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| Reception sponsored by the Norwegian University of Science and Technology, Trondheim ( Norway ) and Ghent University ( Belgium ) |
A CD will be distributed to all participants with copies of the technical papers of interest and presentations of interest on the subjects covered from previous symposia. A reference list with papers on Brachionus published over the last 5 years and with internet sites on rotifer topics will be added.
Copies of the workshop presentations will be put in pdf format on the rotifer workshop site afterwards.