MONOGENOIDEA AND DIGENEA PARASITES OF THUNNUS ATLANTICUS (PERCIFORMES, SCOMBRIDAE) FROM RIO DE JANEIRO COAST, BRAZIL

• Autores: Nascimento Justo, Marcia Cristina, Kohn, Anna
• Formato: artículo
• Fecha de Publicación: 2014
• Institución: Universidad Nacional Federico Villarreal
• Repositorio: Revistas - Universidad Nacional Federico Villarreal
• Lenguaje: español
• OAI Identifier: oai:ojs2.revistas.unfv.edu.pe:article/926
• Enlace del recurso: https://revistas.unfv.edu.pe/NH/article/view/926
• Nivel de acceso: acceso abierto
• Materia: Digenea; Fish parasites; Monogenoidea; Scombridae.; Parásitos de peces; Scombridae

Thunnus atlanticus is of great commercial importance in Brazil, but infections caused by helminth parasites can reduce its commercial value. In this paper, 15 species of Digenea and three of Monogenoidea were recovered from 61 specimens of T. atlanticus collected from the coastal zone of the State of Rio de Janeiro. Species of the family Didymozoidae were the dominant species, with highest prevalence and abundance values. The parasites showed the typical aggregated distribution pattern, except for Nasicola brasiliensis, which had an aleatory distribution pattern. Prevalence and abundance of Didymosulcus philobranchiarca, Didymocystis lamotheargumedoi and Didymosulcus wedli and prevalence of Koellikerioides internogastricus were positively correlated with the total length of the host. The abundance of Coeliotrema thynni was negatively correlated with total length of the host. New hosts records resulted for four Digenea: Didymosulcus orbitalis, Didymosulcus wedli, Rhipidocotyle pentagonum and Lecithochirium microstomum, and one Monogenoidea: Nasicola brasiliensis.