The Infestation of Eustrongylides excisus in Pike Perch (Sander lucioperca L., 1758) (Teleostei: Percidae)
Abstract
Eustrongylides sp. is the most significant freshwater fish zoonotic nematode and has great importance for the environment, fishing and human health. Also the infestation of Eustrongylides excisus being paratenic hosts on pike-perch due to its predator feeding regime. The importance of this nematode is the ability of the capacity to infect carnivorous organisms and humans that feed on them. In this study, Eustrongylides excisus infestation was determined from 51 samples of pike perch (Sander lucioperca L., 1758) between October 2015 and February 2016 from Lake Marmara (Manisa, Turkey). Each sample was observed and the prevalence of the infestation was detected 100%. The parasite samples were examined in Carl Zeiss 300 VP scanning electron microscope. The capsulated and encapsulated parasites were found in various muscles, abdominal cavity and on the internal organs. Also, one sample was detected in the swim bladder without any harm. From scanning electron microscopy overviews, lips and papillae circles were detected on the anterior portion of the body as characteristics for diagnosis of the genus Eustrongylides.
Keywords
Eustrongylides excisus,eustrongylidosis,food-borne parasite,nematodosis,Sander lucioperca
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