Inflammatory reaction induced by Floridosentis mugilis (Acanthocephala, Neoechinorhynchidae) in the intestine of Mugil liza

PLAUL S.E; MONTES M.M; TOPA E.; MARTORELLI S.R.; BARBEITO C.G

BULLETIN OF THE EUROPEAN ASSOCIATION OF FISH PATHOLOGISTS

EUR ASSOC FISH PATHOLOGISTS

Año: 2021 vol. 41 p. 118 - 127

0108-0288

Lebranche mullet, Mugil liza, is an important economic resource and has been recommended foraquaculture in South America. Also, this is the only mullet that breeds in Argentina. In the courseof our routine investigations on the parasitic fauna of fishes from brackish waters of Samborombón Bay, Buenos Aires province, an infection of acanthocephalan worms, identified as Floridosentismugilis was observed in juvenile lebranche mullets. These parasites were attached deeply into theintestinal wall but without piercing it. In this study we analysed the intestinal damage that F. mugilisinflicts on their hosts through the evaluation of histological sections. In the pathological analysiswe observed that these parasites cause a non-specific cellular response that leads to the degranulation of eosinophilic granular cells and, consequently, the formation of a fibrous core with oedema,vascular congestion, and lymphocytic infiltration.