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JOURNAL OF THE HELLENIC VETERINARY MEDICAL SOCIETY, vol.74, no.4, pp.6335-6342, 2023 (SCI-Expanded)
phaerospora dicentrarchi is typically histozoic parasite of the wild and cultured European sea bass(Dicentrachus labrax) of the Mediterranean coastal countries. In this study, pathological and ultrastructural findings ofSphaerospora dicentrarchi infection in the European sea bass were firstly investigated in Turkey. For this purpose, 862European seabass (Dicentrarchuslabrax L) were collected and evaluated from eight cultivation fish farms (offshorefloating cages) in four different locations of Aegean Sea of Turkey (three farms from Kazıklı, one farm from Çandarlı,two farms from Taşburun and two farms from Güllük Regions). It was observed that this parasite was especially intensein adult fish and in the period of June-October when the water temperature increased. Microscopically, the parasiteswere seen as the most intensive in stomach, intestines, gall bladder, pancreas, heart and testis, respectively. Stomachwas the most commonly infected organ. In transmission electron microscopy examination, a bag-like group of maturecouple spores were seen surrounded by polar capsules. As a result, it was determined that Sphaerospora dicentrarchiinfection is very common in adult sea bass in the Aegean region of Turkey, as in Greece, Spain, Portugal and Italy.