Publication: Blood fluke infection of cage reared Atlantic bluefin tuna Thunnus thynnus in west Mediterranean
Authors
Ruiz de Ybáñez Carnero, María del Rocío ; Peñalver, José ; Martínez Carrasco-Pleite, Carlos ; del Río, Laura ; María Dolores, Emilio ; Berriatua, Eduardo ; Muñoz, Pilar
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Publisher
The Japanase Society of Fish Pathology
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DOI
https://doi.org/10.3147/jsfp.46.87
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info:eu-repo/semantics/article
Description
©2011 The Japanase Society of Fish Pathology. This document is the Published version of a Published Work that appeared in final form in Fish Pathology. To access the final edited and published work see https://doi.org/10.3147/jsfp.46.87
Abstract
Infection of a blood fluke, possibly Cardicola sp. (Digenea: Aporocotylidae), in reared Atlantic bluefin tuna Thunnus thynnus was investigated. Parasitological analyses included visual examination of the heart for the presence of adult fluke and stereomicroscopic and histopathological analyses of the gill to assess the presence of lesions caused by parasite eggs. No adult flukes were found in the hearts. Some of the gills exhibited small white to yellow foci involving single filaments. Blood fluke eggs were found in gill tissue sections of 29.6% of sampled tuna. A slight inflammatory response was observed around most of these eggs, while occasionally individual eggs were encapsulated by a granulomatous reaction. Despite the absence of remarkable pathological effects in the infected tuna, blood flukes combined with other agents may cause major problem.
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