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Turkish Journal of Fisheries and Aquatic Sciences 2019, Vol 19, Num, 3     (Pages: 221-229)

Performance of the cultured Mediterranean mussel Mytilus galloprovincialis (Lamark 1819) after summer post-harvest reimmersion

John A. Theodorou 1 ,Benjamin-Stewart Leech 2 ,Costas Perdikaris 3 ,Claire Hellio 4 ,George Katselis 1

1 Department of Fisheries & Aquaculture Technology, Technological Educational Institute (TEI) of W. Greece, Nea Ktiria, GR 30200 Mesolonghi, Greece
2 School of Biological Sciences, King Henry Building, University of Portsmouth, Portsmouth PO1 2DY, UK
3 Department of Fisheries, Regional Unit of Thesprotia, Region of Epirus, GR 46100, Igoumenitsa, Greece
4 Laboratoire des Sciences de l’Environnement Marin-lemar umr 6539, Université de Bretagne Occidentale, Brest, France
DOI : 10.4194/1303-2712-v19_03_05 Viewed : 3171 - Downloaded : 2438 Post-harvesting, handling and storage practices, particularly during the summer months, are crucial for mussel farms, as they induce stress, mortalities and affect overall performance and marketability. In the current work, Mediterranean farmed mussels, were stored into plastic net bags of different weights (7.5kg, 10 kg, 12.5 kg and 15 kg) and reimmersed into the farm sea water during summer 2012. The experiment was conducted under warm summer conditions in Mediterranean waters with temperature levels close to the upper tolerance limits of the mussels (28ºC). Μortality rates and condition index (CI) were calculated in all mussel bags at four sampling dates over a 46 days period. It is concluded that mussels graded-packed on bags (7.5-15 kg) could be preserved underwater for 25 days of re-immersion without significant mortality and CI losses. Keywords : Mediterranean mussel farming, Mytilus galloprovincialis, Biofouling, Post-harvest re-immersion, Summer mortality