1. Department of Zoology, School of Biology, Faculty of Science Aristotle University of Thessaloniki Thessaloniki GR‐54124 Greece
2. Department of Animal Science, Faculty of Agricultural Sciences University of Western Macedonia Florina 53100 Greece
3. Department Animal Production Fisheries and Aquaculture University of Patras Messolonghi Greece
4. National Reference Laboratory for Marine Biotoxins, Department of Food Microbiology Biochemical Control, Residues, Marine Biotoxins and Other Water Toxins, Directorate of Veterinary Center of Thessaloniki, Ministry of Rural Development and Food Thessaloniki Greece
5. Department of Biology National and Kapodistrian University of Athens, Panepistimiopolis Athens Greece
6. Department of Physics, Section of Environmental Physics and Meteorology National and Kapodistrian University of Athens Athens Greece
7. National Reference Laboratory for Mollusc Diseases Ministry of Rural Development and Food Thessaloniki 54627 Greece
8. Hellenic Agricultural Organisation‐DEMETER, Veterinary Research Institute of Thessaloniki, Campus of Thermi, 570 01 Thermi Greece
9. Laboratory of Hygiene, Social – Preventive Medicine and Medical Statistics, Faculty of Medicine, School of Health Sciences Aristotle University of Thessaloniki Thessaloniki Greece
10. Department of Fishery Products, Milk and Other Food of Animal Origin, Ministry of Rural Development and Food of Greece Athens Greece