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Ecological and histopathological aspects of Didymodiclinus sp. (Trematoda: Didymozoidae) parasite of the dusky grouper, Epinephelus marginatus (Osteichthyes: Serranidae), from the western Mediterranean Sea.
Polinas, Marta; Mele, Salvatore; Padrós, Francesc; Merella, Paolo; Antuofermo, Elisabetta; Gouraguine, Adam; Reñones, Olga.
Afiliación
  • Polinas M; Anatomia Patologica, Dipartimento di Medicina Veterinaria, Università di Sassari, Sassari, Italy.
  • Mele S; Parassitologia e Malattie Parassitarie, Dipartimento di Medicina Veterinaria, Università di Sassari, Sassari, Italy.
  • Padrós F; Fish Diseases Diagnostic Service, Facultat de Veterinària, Universitat Autònoma de Barcelona, Catalonia, Spain.
  • Merella P; Parassitologia e Malattie Parassitarie, Dipartimento di Medicina Veterinaria, Università di Sassari, Sassari, Italy.
  • Antuofermo E; Anatomia Patologica, Dipartimento di Medicina Veterinaria, Università di Sassari, Sassari, Italy.
  • Gouraguine A; School of Biological Sciences, University of Essex, Colchester, UK.
  • Reñones O; Centro Oceanográfico de Baleares, Instituto Español de Oceanografía, Palma, Spain.
J Fish Dis ; 41(9): 1385-1393, 2018 Sep.
Article en En | MEDLINE | ID: mdl-29926922
The dusky grouper Epinephelus marginatus (Lowe) is an ecologically and commercially important fish species of the Atlantic and Mediterranean coastal rocky habitats. Despite records of didymozoid infections in several grouper species, the identification and pathogenesis of these parasites in E. marginatus are lacking. The aim of this study is to characterize the didymozoids of E. marginatus, particularly their mechanisms of infection and histopathological features. Dusky groupers (n = 205) were caught off Majorca Island (western Mediterranean Sea) and examined for parasites. Of the fish sampled, 45% were infected with white and yellow didymozoid capsules and brown nodules, found on the gills and pseudobranchs. Parasite abundance had a strong positive relationship with the fish length; only fish larger than 20 cm were infected, suggesting infection via consumption of an intermediate host, for which E. marginatus size was a limiting factor. The capsules contained two convoluted viable adult trematodes, identified as Didymodiclinus sp., in close contact with host capillary vessels, with no evidence of the tissue inflammatory response. Conversely, nodules containing degraded parasites were surrounded by an intense inflammatory infiltrate. The findings suggest that Didymodiclinus sp. have the potential to evade the host's immune system by inhibiting the inflammatory response.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Trematodos / Lubina / Fenómenos Ecológicos y Ambientales / Enfermedades de los Peces Tipo de estudio: Prognostic_studies Límite: Animals Idioma: En Revista: J Fish Dis Asunto de la revista: BIOLOGIA / MEDICINA VETERINARIA Año: 2018 Tipo del documento: Article País de afiliación: Italia Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Trematodos / Lubina / Fenómenos Ecológicos y Ambientales / Enfermedades de los Peces Tipo de estudio: Prognostic_studies Límite: Animals Idioma: En Revista: J Fish Dis Asunto de la revista: BIOLOGIA / MEDICINA VETERINARIA Año: 2018 Tipo del documento: Article País de afiliación: Italia Pais de publicación: Reino Unido