Algunas adiciones a la fauna monogenética (Plathyhelminthes) de Venezuela | Some additions to venezuelan monogenetic fauna (Plathyhelminthes)

Arnaldo Figueredo Rodríguez; Edilia Rodríguez; Harry Espinoza; José Luis Fuentes

Algunas adiciones a la fauna monogenética (Plathyhelminthes) de Venezuela | Some additions to venezuelan monogenetic fauna (Plathyhelminthes)

Arnaldo Figueredo Rodríguez, Edilia Rodríguez, Harry Espinoza, José Luis Fuentes

Resumen

Como parte de estudios periódicos sobre la parasitofauna de peces marinos llevados a cabo en el Laboratorio de Parasitología de la Universidad de Oriente, Núcleo de Nueva Esparta, se evaluaron diversas especies ícticas de interés comercial. Los peces fueron recolectados en tres puertos de desembarco del estado Nueva Esparta e inmediatamente procesados. Sus branquias fueron extraídas y revisadas minuciosamente bajo microscopio estereoscópico. Se realizaron preparaciones permanentes con los helmintos parásitos encontrados, para luego obtener imágenes descriptivas. En todos los casos, los hábitats de los parásitos fueron las branquias de los hospederos. Los nuevos hallazgos para Venezuela comprenden cinco monogéneos: Capsala manteri recolectado en carite pintado Euthynnus alleteratus; Capsala pricei hallado sobre el tiravira Mobula hypostoma; Tristoma integrum encontrado en pez espada, Xiphias gladius; Decacotyle floridana registrado en chucho pintado Aetobatus narinari y Hexostoma lintoni encontrado en atún aleta amarilla Thunnus albacares. Por primera vez para el país, se refieren representantes de las sub-familias Capsalinae y Decacotylinae. Se describen algunos detalles de la anatomía de los parásitos, discutiéndose aspectos taxonómicos y biogeográficos.

Palabras clave: Monogenea, Capsala manteri, Capsala pricei, Tristoma integrum, Decacotyle floridana, Hexostoma lintoni

ABSTRACT

As part of periodical studies about parasitic fauna of marine fishes carried out in Laboratory of Parasitology of Universidad de Oriente, campus Nueva Esparta, several commercially important ichthyic species were evaluated. Fishes were collected in three landing ports of Nueva Esparta state and immediately processed. Gills were carefully extracted and reviewed under stereoscopic microscope. Permanent slides were prepared with parasites found, and then to obtain descriptive images. In all cases, the parasitic habitat was gills of hosts. New records for Venezuela comprises five monogeneans: Capsala manteri collected on little tunny, Euthynnus alleteratus; Capsala pricei found over lesser devil ray, Mobula hypostoma; Tristoma integrum observed on swordfish, Xiphias gladius; Decacotyle floridana registred over spotted eagle ray, Aetobatus narinari and Hexostoma lintoni discovered on yellowfin tuna, Thunnus albacares. For the first time for the country, representatives of sub-families Capsalinae and Decacotylinae were referred to. Some details of parasites anatomy are described, discussing about taxonomic and biogeographic aspects.

Key words: Monogenea, Capsala manteri, Capsala pricei, Tristoma integrum, Decacotyle floridana, Hexostoma lintoni.

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