Pollution Indicators and HAB-Associated Halophilic Bacteria Alongside Harmful Cyanobacteria in the Largest Mussel Cultivation Area in Greece

Maria P. Kalaitzidou, Maria V. Alvanou, Konstantinos V. Papageorgiou, Athanasios Lattos, Marina Sofia, Spyridon K. Kritas, Evanthia Petridou and Ioannis A. Giantsis
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Maria P. Kalaitzidou: 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, 54627 Thessaloniki, Greece
Maria V. Alvanou: Department of Animal Science, Faculty of Agricultural Sciences, University of Western Macedonia, 53100 Florina, Greece
Konstantinos V. Papageorgiou: 3rd Military Veterinary Hospital, General Staff, Hellenic Ministry of Defense, 15th Km Thessaloniki-Vasilika, 57001 Thessaloniki, Greece
Athanasios Lattos: Department of Animal Science, Faculty of Agricultural Sciences, University of Western Macedonia, 53100 Florina, Greece
Marina Sofia: Faculty of Veterinary Science, University of Thessaly, 43100 Karditsa, Greece
Spyridon K. Kritas: Laboratory of Microbiology and Infectious Diseases, School of Veterinary Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
Evanthia Petridou: Laboratory of Microbiology and Infectious Diseases, School of Veterinary Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
Ioannis A. Giantsis: Department of Animal Science, Faculty of Agricultural Sciences, University of Western Macedonia, 53100 Florina, Greece

IJERPH, 2022, vol. 19, issue 9, 1-13

Abstract: Taking into consideration the essential contribution of Mytilus galloprovincialis farming, it is of rising importance to add knowledge regarding bacterial species occurrence in water samples from aquaculture zones from the point of view of both the organism and public health. In the present study, we investigated the bacterial community existing in water samples from six Mytilus galloprovincialis aquaculture areas in the Thermaikos gulf, northern Greece, that may provoke toxicity in aquatic organisms and humans and may indicate environmental pollution in mussel production as well as algal blooms. Bacterial species were identified molecularly by sequencing of a partial 16s rRNA segment and were analyzed phylogenetically for the confirmation of the bacterial taxonomy. The results obtained revealed the presence of four bacterial genera ( Halomonas sp., Planococcus sp., Sulfitobacter sp., and Synechocystis sp.). Members of the Halomonas and Sulfitobacter genera have been isolated from highly polluted sites, Planococcus bacteria have been identified in samples derived directly from plastic debris, and Synechocystis bacteria are in line with microcystin detection. In this context, the monitoring of the bacteria community in mussel aquaculture water samples from the Thermaikos gulf, the largest mussel cultivation area in Greece, represents an indicator of water pollution, microplastics presence, algal blooms, and toxin presence.

Keywords: seawater; bacterial communities; algal bloom; pollution; mussel; Mytilus galloprovincialis; contamination; biomarkers; public health; phylogeny (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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