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Neotropical Monogenoidea. 52. Diechodactylus joaberi n. g., n. sp. from the banded knifefish Gymnotus carapo (Gymnotiformes: Gymnotidae) in southeastern Brazil

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Abstract

Diechodactylus joaberi n. g., n. sp. is described from the body surface of the banded knifefish Gymnotus carapo L. (Gymnotiformes: Gymnotidae) from southeastern Brazil. The new genus is proposed to accommodate species with five pairs of hooks in anterior bilateral clusters on the haptor, three pairs of hooks in a single cluster on the posterior margin of the haptor, sclerites R1 associated with the superficial bar, and confluent intestinal caeca. The presence of five pairs of hooks in two bilateral clusters anterior in the haptor permits the differentiation of species of Diechodactylus from species of all known genera of the Gyrodactylidae. The genus is likely a member of a clade of the Gyrodactylidae comprising genera with a similar hook distribution.

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Acknowledgements

We would like to thank the team of the Instituto Internacional de Ecologia (IIE), Brazil, and especially Dr José Galizia Tundisi and Daniela Fernanda Rosim, for their support during field sampling and laboratory work. The Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) has funded this study and provided a scholarship to RTV.

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Authors and Affiliations

  1. Departamento de Zoologia, Curso de Pós Graduação em Zoologia, Laboratório de Parasitologia Evolutiva, Universidade Federal do Paraná, Caixa Postal 19073, 81531-980, Curitiba, Paraná, Brazil

    Rogério T. Vianna & Walter A. Boeger

  2. Universidade Estadual de Londrina, BAV-CCB, Campus Universitário, 86051-990, Londrina, Paraná, Brazil

    Angela T. Silva-Souza

  3. Instituto Internacional de Ecologia, São Carlos, São Paulo, Brazil

    Angela T. Silva-Souza

Authors
  1. Rogério T. Vianna
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  2. Walter A. Boeger
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  3. Angela T. Silva-Souza
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Correspondence to Walter A. Boeger.

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Vianna, R.T., Boeger, W.A. & Silva-Souza, A.T. Neotropical Monogenoidea. 52. Diechodactylus joaberi n. g., n. sp. from the banded knifefish Gymnotus carapo (Gymnotiformes: Gymnotidae) in southeastern Brazil. Syst Parasitol 69, 45–50 (2008). https://doi.org/10.1007/s11230-007-9107-5

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  • DOI: https://doi.org/10.1007/s11230-007-9107-5

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