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Two new species of Ergasilus Nordmann, 1832 (Copepoda: Ergasilidae) and a redescription of Ergasilus salmini Thatcher & Brazil-Sato, 2008 from Salminus brasiliensis Cuvier and S. franciscanus Lima & Britsky (Teleostei: Characidae) in Brazil

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Abstract

Three species of Ergasilus Nordmann, 1832 are reported from the gills of Salminus spp. in Brazil. Ergasilus salmini Thatcher & Brazil-Sato, 2008 from Salminus brasiliensis Cuvier is redescribed, based on examination of paratypes. The study revealed morphological differences from the original description, especially in the morphology of the cephalothorax and the ornamentation of antenna, antennule and legs. Ergasilus lacusauratus n. sp. described from S. brasiliensis in lake Lagoa Dourada (Paraná) differs from the only known species from this host group, E. salmini, in the shape and size of the cephalothorax and the general morphology of the egg-sacs. Ergasilus sinefalcatus n. sp. from S. franciscanus Lima & Britsky in River São Francisco (Minas Gerais) closely resembles E. pitalicus, E. coatiarus and E. leporinidis in the lack of a pectinate seta on the first exopodal segment, a feature common in species of Ergasilus in the Neotropics. Ergasilus sinefalcatus n. sp. differs from these species in the presence of a spiniform process on the coxae of legs 2, 3 and 4, an ornament never reported from freshwater species of Ergasilus in South America.

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Acknowledgements

The objective and through revisions of the editor and one reviewer were fundamental to improve the quality of the descriptions and manuscript.

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Authors and Affiliations

  1. Laboratório de Ecologia Molecular e Parasitologia Evolutiva, Universidade Federal do Paraná, Caixa Postal 19073, Curitiba, PR, 81531-980, Brazil

    Taísa Mendes Marques & Walter A. Boeger

  2. Conselho Nacional de Desenvolvimento Científico e Tecnológico, Curitiba, Brazil

    Taísa Mendes Marques & Walter A. Boeger

  3. Instituto de Biologia, Universidade Federal Rural do Rio de Janeiro, Caixa Postal 74539, BR 465, Km. 7, Campus Universitário, Seropédica, Rio de Janeiro, 23851-970, Brasil

    Marília de Carvalho Brasil-Sato

  4. Curso de Pós-Graduação em Parasitologia, Departamento de Patologia, Universidade Federal do Paraná, Curitiba, Brazil

    Taísa Mendes Marques

Authors
  1. Taísa Mendes Marques
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  2. Walter A. Boeger
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  3. Marília de Carvalho Brasil-Sato
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Correspondence to Walter A. Boeger.

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Marques, T.M., Boeger, W.A. & de Carvalho Brasil-Sato, M. Two new species of Ergasilus Nordmann, 1832 (Copepoda: Ergasilidae) and a redescription of Ergasilus salmini Thatcher & Brazil-Sato, 2008 from Salminus brasiliensis Cuvier and S. franciscanus Lima & Britsky (Teleostei: Characidae) in Brazil. Syst Parasitol 90, 81–89 (2015). https://doi.org/10.1007/s11230-014-9529-9

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  • DOI: https://doi.org/10.1007/s11230-014-9529-9

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