Article (Scientific journals)
Biological site suitability for exposed self-regulating cultivation of blue mussel (Mytilus edulis): A Belgian case study
Stechele, Brecht; van der Zande, Dimitry; Alvera Azcarate, Aida et al.
2022In Aquacultural Engineering, 98, p. 102264
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Keywords :
Dynamic Energy Budget; Larval dispersal; Mytilus edulis; Offshore blue mussel; Remote sensing; Self-regulated cultivation; Blue mussel Mytilus edulis; Blue mussels; Condition; Dynamic energy budgets; Offshores; Remote-sensing; Aquatic Science
Abstract :
[en] Several reasons, from stakeholder conflicts to water quality issues, are pushing bivalve cultivation to less accessible, exposed, and offshore waters. Because sheltered areas are absent along the Belgian coastline, the possibility to culture mussels with self-regulated systems in exposed conditions has been explored by various research projects. Farmers consider offshore environments unsuitable on the assumption that spat densities are low, and growth is insufficient for commercialization. This study evaluates the potential for self-regulated mussel cultivation in an exposed North Sea environment based on data collected from several research projects that evaluated the biological and technical feasibility of commercial longline cultivation in Belgium. The cultivation methods were variable, but always relied on wild spat that was grown to market size. No husbandry practices such as seed harvesting, thinning, grading, or socking were performed. This cultivation technique, also called self-regulating cultivation, reduces operational costs when extreme weather and exposed conditions limit handling. A 3D hydro-dynamic larvae dispersal model (LDM) was used to simulate the spatial variability in arrivals and the timing of the arrival peak. In addition, a locally validated metabolic model (DEB) for the blue mussel (M. edulis) was forced with 10 year optimized remote sensing observations (Copernicus, Sentinel-3/OLCI) to predict industry-relevant information such as site suitability, inter-annual growth variability, and cultivation time. This study concludes that exposed mussel cultivation near the Belgian east coast is characterised by fast growth. Mussels grown in this area will reach a marketable size (6 cm) after 12–15 months of cultivation, which is just in time for the peak consumption season (July-August). Moving offshore prolongs the cultivation cycles to 17–25 months, but provides more stable growth conditions with less inter-annual variability. When considering a cultivation period of 12 months, the mussels originating from offshore cultivation are comparable in size to the smaller Dutch “Smitse” and French "Bouchots".
Research Center/Unit :
FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège
Disciplines :
Earth sciences & physical geography
Author, co-author :
Stechele, Brecht;  Laboratory of Aquaculture & Artemia Reference Center, Department of Animal Sciences and Aquatic Ecology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
van der Zande, Dimitry;  Royal Institute of Natural Sciences, OD Nature, Brussels, Belgium
Alvera Azcarate, Aida  ;  Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > GeoHydrodynamics and Environment Research (GHER)
Delbare, Daan;  Animal Science Unit, Research Group Aquaculture, Institute for Agricultural and Fisheries Research (ILVO), Ostend, Belgium
Lacroix, Geneviève;  Royal Institute of Natural Sciences, OD Nature, Brussels, Belgium
Nevejan, Nancy;  Laboratory of Aquaculture & Artemia Reference Center, Department of Animal Sciences and Aquatic Ecology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
Language :
English
Title :
Biological site suitability for exposed self-regulating cultivation of blue mussel (Mytilus edulis): A Belgian case study
Publication date :
August 2022
Journal title :
Aquacultural Engineering
ISSN :
0144-8609
Publisher :
Elsevier B.V.
Volume :
98
Pages :
102264
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
MultiSync
Funders :
BELSPO - Belgian Science Policy Office
Funding text :
This work was supported by the Research Foundation - Flanders (FWO) (grant number: 1S84619N, 2020). The larval transport model has been adapted for blue mussels in the frame of the UNDINE (INSITE Foundation Phase I, 2015–2017) project. The remote sensing data was generated in the framework of the Multi-Sync project, funded by the Belgian Federal Science Policy Office (SR/00/359, 2017). Mussel data were made available from the ‘Studie naar de commercialisering van de Belgische off-shore hangmosselcultuur’ (FIOV), Edulis (EFMZV 16/UP2/05/Aqua 2017), Value@Sea (EFMZV 16/UP2/04/Aqua 2017) and Coastbusters (VLAIO HBC 2016.0637 2017) co-funded research projects by the European Fund for Maritime Affairs and Fisheries and the Flemish Government.This work was supported by the Research Foundation - Flanders (FWO) (grant number: 1S84619N, 2020 ). The larval transport model has been adapted for blue mussels in the frame of the UNDINE ( INSITE Foundation Phase I , 2015–2017 ) project. The remote sensing data was generated in the framework of the Multi-Sync project, funded by the Belgian Federal Science Policy Office ( SR/00/359, 2017 ). Mussel data were made available from the ‘Studie naar de commercialisering van de Belgische off-shore hangmosselcultuur’ (FIOV), Edulis (EFMZV 16/UP2/05/Aqua 2017), Value@Sea (EFMZV 16/UP2/04/Aqua 2017) and Coastbusters (VLAIO HBC 2016.0637 2017) co-funded research projects by the European Fund for Maritime Affairs and Fisheries and the Flemish Government .The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Brecht Stechele reports financial support was provided by Research Foundation Flanders.
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