The Toxic and Harmful Algae Composition in the Stomach Contents of Mediterranean mussel (Mytilus galloprovincialis Lamarck, 1819) and in the Water Column in the Inner Part of Izmir Bay
Project no. 20700 · Status: Kapanmış (Yayın bekleniyor) · 2019
Summary
The qualitative and quantitative distributions of phytoplankton species in the inner part of İzmir Bay, the environmental factors affecting these distributions, and the toxic and harmful algae composition in the stomach contents of Mediterranean mussel (Mytilus galloprovincialis Lamarck, 1819) and water column was aimed to determine in this study. As a result of the quantitative samplings carried out within the scope of the study, a total of 59 taxa were identified, of these, 34 taxa belong to the classis Dinophyceae, 2 taxa belong to the classis Dictyochophyceae, 21 taxa belong to the classis Bacillariophyceae, 1 taxon belongs to the classis Prymnesiophyceae and 1 taxon belongs to classis Cryptophyceae. In terms of species diversity and cell density, Dinophyceae and Bacillariophyceae classes are more dominant than other classes. During the sampling period, 2 toxic and 10 harmful species were identified. Among the dinoflagellates, Dinophysis fortii causing DSP and Lingulodinium polyedra species causing PSP were detected and cell concentrations in both species did not reach a level that would cause toxicity. As a result of the examination of the stomach contents of mussels, a total of 31 taxa were identified, of which mainly belong to the dinoflagellates and diatoms. Although toxic species are not determined in mussel stomach contents, Cylindrotheca closterium, Dinophysis caudata, Gonyaulax polygramma, Gonyaulax spinifera, Phalacroma rotundatum and Skeletonema costatum are the species considered as harmful algae found among the phytoplankton species determined in mussel stomach contents. Key Words: Phytoplankton, harmful algae, quantitative distribution, Mytilus galloprovincialis, İzmir Bay