Vol. 50 No. 2 (2021)

Articles

• Biology of the thornback ray (Raja clavata Linnaeus, 1758) in the North Aegean Sea

  Koray Cabbar, Cahide Çiğdem Yiğin

  115-127

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• Stock mapping, size structure and biological parameters of the clam Polititapes aureus in the shellfish production area of the southern Tunisian waters (Central Mediterranean)

  Abdelkarim Derbali, Othman Jarboui

  128-136

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• Distribution and ecology of two interesting diatom species Navicula flandriae Van de Vijver et Mertens and Planothidium nanum Bąk, Kryk et Halabowski in rivers of Southern Poland and their spring areas

  Dariusz Halabowski, Małgorzata Bąk, Iga Lewin

  137-149

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• Incidence of skeletal deformities in induced triploid rainbow trout Oncorhynchus mykiss (Walbaum, 1792)

  Krzysztof Jagiełło , Marcin Polonis, Konrad Ocalewicz

  150-159

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• Effects of copper and cadmium on physiology and antifouling defense of the marine macroalga Ulva reticulata

  Wejdan Ahmed Al-Khaldi, Lafi Al Solami, Sathianeson Satheesh

  184-197

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• Distribution of Didymosphenia, Gomphonema and Gomphosphenia diatoms (Bacillariophyta) in Turkish inland waters

  Cüneyt Nadir Solak, Agata Z. Wojtal, Mateusz Rybak, Elif Yılmaz

  198-219

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• Inter-clutch egg differences and androgenesis in rainbow trout (Oncorhynchus mykiss, Walbaum 1792)

  Marcin Polonis, Agata Błaszczyk, Krzysztof Jagiełło , Ligia Panasiak, Stefan Dobosz, Konrad Ocalewicz

  160-168

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• The foraminiferal record in the Holocene evolution of the Mecklenburg Bay (south-western Baltic Sea)

  Robert Kostecki, Teresa Radziejewska

  169-183

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• Characteristics of morphodynamic conditions in the shallows of Puck Bay (southern Baltic Sea)

  Ewa Szymczak, Maria Rucińska

  220-231

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• Determination of heavy metals in some tissues of four fish species from the Karasu River (Erzincan, Turkey) for public consumption

  Özge Zencir Tanır

  232-246

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