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Blue mussels aquaculture challenges explained
The document discusses the development of best practices and new technologies for grading, handling, transportation, conditioning, and storage of mussels in the European industry. It highlights the challenges faced by mussels during live trade, including physical damage, poor water quality, and temperature fluctuations, which can lead to mortality. The information is part of a collaborative research project supported by the European Commission, aimed at improving the live mussel supply chain.
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Blue mussels aquaculture challenges explained
- 2. Mussels Development of best practice and new technology for grading, handling, transportation, Alive conditioning and storage of mussels for SMEs in the European mussel industry
- 3. Mussels can survivefor extended periods out of water and are traded for human consumption as live animals
- 4. The increased productionand the development of rapid ground and air transport have improved the supply of live product to markets worldwide
- 5. However, live marketing isa complex issue
- 6. Following harvest, culturedmussels are washed, declumped, and graded by size
- 8. After grading andif bacteria loads in the harvesting area are above the legislated level, mussels must also be either re-layed depurated
- 9. Shellfish harvested frompolluted areas can be placed in clean areas (areas free of Relaying microbiological contamination) to allow shellfish to cleanse or purge themselves
- 10. Boost Filtering Activity Clean water Avoid Depuration recontamination re-watering process in clean water that promotes the purging of some bacteria from the mussels.
- 11. Boost Filtering Activity Clean water Avoid Depuration recontamination re-watering process in clean water that promotes the purging of some bacteria from the mussels.
- 12. ...after being relayedor depurated mussels are once again declumped, debyssed and then packed and transported
- 13. Transport out ofwater can take between 24 and 48 hours
- 14. Once out ofwater mussels gape and loose water Gaping mussel Gaping mussel
- 16. So in everystep of the live trade mussels face challenges that can lead to mortality 1 Physical damage Grading & Handling
- 17. Holding & Conditioning 2 Poor Water Quality
- 18. Storage 3 4 Air exposure Fluctuating temperatures Transport
- 19. In this projectwe investigated every critical point Holding & Storage Conditioning Poor Water Quality 1 2 3 4 Air exposure Physical damage Fluctuating temperatures Transport Grading & Handling
- 20. For further informationplease visit our site at http://www.musselsaliveproject.com/
- 21. This presentation wasdeveloped with the support of the European Commission through the Collaborative Research Project ''MusselsAlive : Development of best Practice and new technology for grading, handling, transportation, conditioning and storage of mussels for SMEs in the European mussel industry“ by Sara Barrento s.i.barrento@swansea.ac.uk Centre for Sustainable Aquatic Research http://www.aquaculturewales.com Swansea University Singleton Park Swansea, SA2 8PP
Editor's Notes
- #11 You could think that depuration is about giving the mussels the same conditions that they have in seawater, the location where they were harvested from. Actually the overriding premise in the depuration of bivalve molluscs is to create the conditiosn to elicitate the removal of the contents of the digestive tract into the water system holding the animals and to ensure the resultant faeces and any pseudofaeces remain separated from the bivalves for the duration of immersion. This is done by controlling the environmental parameters of the water such that the animal‟s metabolism is raised to a point were the deposition of faeces increases without exhausting the animal to such and extent that it dies prior to consumption.