Patrícia B Cepeda

Publications (2)1.87 Total impact

• Source

  Available from: ufrrj.br

  Article: Three new species of Demidospermus (Monogenea: Dactylogyridae) parasitic on Brachyplatystoma filamentosum (Siluriformes: Pimelodidae) from the Araguaia River, Brazil.

  Patrícia B Cepeda, José L Luque
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  ABSTRACT: Three new species of dactylogyrids (Monogenea) from the Araguaia River in Brazil are described herein. Specimens of Demidospermus ceccarellii n. sp., Demidospermus brachyplatystomae n. sp., and Demidospermus araguaiaensis n. sp. were collected from the gills of the siluriform fish, Brachyplatystoma filamentosum (Lichtenstein, 1819). The 3 new species can be easily distinguished from their congeners by the shape of the male copulatory organ (MCO) and accessory piece. Demidospermus ceccarellii n. sp. presents a J-shaped and robust MCO, a base with a short sclerotized margin, and a slightly curved and robust accessory piece with the base slightly dilated. In contrast, D. brachyplatystomae n. sp. has a thin MCO forming an incomplete ring, a base with an irregular sclerotized margin, and a long and curved accessory piece with a wider distal portion. Demidospermus araguaiaensis n. sp. has a thin MCO with a base directly coupled to the accessory piece and an articulated accessory piece that is sinuous in shape in the distal portion. In addition, the 3 species present haptoral hooks similar in shape and size and, thus, were compared in detail with the other Demidospermus species with this particular characteristic. This is the first record of monogeneans that are parasitic on B. filamentosum.
  Journal of Parasitology 10/2010; 96(5):869-73. · 1.40 Impact Factor
• Source

  Available from: cbpv.com.br

  Article: Larvals of Terranova sp. (Nematoda: Anisakidae) parasitic in Plagioscion squamosissimus (Perciformes: Sciaenidae) from Araguaia River, State of Tocantins, Brazil.

  Luiz E R Tavares, Caroline D R Saad, Patrícia B Cepeda, José L Luque
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  ABSTRACT: During the study of the metazoan parasites of fishes from Araguaia River, municipality of Araguatins (05 degrees 39'S, 48 degrees 07'W), State of Tocantins, Brazil, a third stage larvae of an undescribed species of Terranova were collected from the mesenteries of Plagioscion squamosissimus. These larvae were characterized to present large size, excretory pore situated near of the base of ventrolateral lips, presence of short intestinal caecum dorsal to oesophagus, ventriculus less than seven times as long as wide and absence of mucron. This is the first record and description of larval of species of Terranova parasitic in South American freshwater fishes.
  Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology: Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria 16(2):110-5. · 0.46 Impact Factor