The Journal of Advances in Parasitology

Research Article
J. Adv. Parasitol. 8(1): 9-12
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Öznur Diler1, Öznur Görmez Özil1*, Halit Bayrak2, Özlem Özmen3

1Eğirdir Fisheries Faculty, Isparta Applied Sciences University, Isparta, Turkey; 2Water Institute, Suleyman Demirel University, Isparta, Turkey; 3Department of Pathology, Faculty of Veterinary Medicine, Burdur Mehmet Akif Ersoy University, Burdur, Turkey.

Abstract | The study describes the pathological changes of the acanthocephalan, Pomphorhynchus laevis (Müller, 1776) in cage-reared fish farm, infected rainbow trout, Oncorhynchus mykiss (Walbaum, 1792) in Işıklı Spring, Çivril, Turkey. In this study, a total of 3144 P. laevis individuals were detected from 84 sampled fish. 100% of these fish were infected by P. leavis, and mean intensity of infection was 37.42±0.32. At the histopathological examinations, parasites generally localised in the intestine. Also, the parasites were appeared freely in the abdominal cavity or attached visceral organs such as hepatopancreas and the serosal surface of the gastrointestinal system organs. The parasites were found encapsulated by a thin connective tissue each containing a single parasite in the internal organs of the host and the inflammatory reaction was observed around the parasite attached on abdominal organs in infected rainbow trout.

Keywords | Acanthocephala, Pomphorhynchus laevis, Pathology, Rainbow trout, Oncorhynchus mykiss