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The specimens of surubim, Pseudoplatystoma corruscans (Spix and Agassiz, 1829), an important food fish with high commercial value in the Upper São Francisco River, were collected downstream from the Três Marias Dam, in the municipality of Três Marias, State of Minas Gerais, Brazil. Thirty-six individuals were examined and among the parasites, four species of Digenea were found: Witenbergia witenbergi Vaz, 1932 and Tylodelphys sp. (metacercarie), both with prevalence above 10%, followed by Acanthostomum gnerii (Szidat, 1958) and Acanthostomum sp.. The total length of the hosts did not influence the parasite prevalence. Witenbergia witenbergi occurred only in female hosts and the abundance of Tylodelphys sp. was higher in the males. These Digenea were recorded for the first time in P. corruscans, and their known geographic distribution has been expanded to the São Francisco Basin in Brazil. Espécimes de surubim, Pseudoplatystoma corruscans (Spix e Agassiz, 1829), importante peixe na pesca profissional e de maior valor comercial, do Alto Rio São Francisco, foram coletados à jusante da barragem de Três Marias, município de Três Marias, Minas Gerais. Foram examinados 36 indivíduos e dentre outros parasitos, foram encontradas quatro espécies de Digenea: Witenbergia witenbergi Vaz, 1932 e Tylodelphys sp. (metacercárias) ambas com prevalência superior a 10%, seguidas por Acanthostomum gnerii (Szidat, 1958) e Acanthostomum sp.. O comprimento total dos hospedeiros não influenciou a prevalência e a abundância parasitária. Witenbergia witenbergi ocorreu apenas em hospedeiros fêmeas e a abundância de Tylodelphys sp. foi mais elevada nos hospedeiros machos. Esses Digenea foram registrados pela primeira vez em P. corruscans e tiveram sua distribuição geográfica conhecida ampliada para a bacia do São Francisco, Brasil

brazilian archives of biology and technology

Digenea in the surubim Pseudoplatystoma corruscans (Spix and Agassiz, 1829) (Siluriformes: Pimelodidae) of the upper São Francisco River, State of Minas Gerais, Brazil