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Henneguya nagelii n. sp. (Myxozoa: Myxobolidae) in Cyphocharax nagelii (Steindachner, 1881) (Teleostei: Characiformes: Curimatidae) from the Peixe’s River, São Paulo State, Brazil

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Abstract

A new species of Myxosporea, Henneguya nagelii n. sp., is described parasitizing the gills of Cyphocharax nagelii collected from Peixe’s River, São Paulo State, Brazil. Among the fish examined, 16.7 % had gills parasitized by myxosporeans. The plasmodia were white, round, or oval and measured 150–250 μm. The mature spores were fusiform and had smooth wall. The spores measurements were the following: total length, 34.5 ± 4.2 (26.4–39.9) μm; body length, 12.0 ± 0.5 (11.2–11.9) μm; body width, 4.9 ± 0.3 (4.4–5.5) μm; and caudal process length, 22.4 ± 4.0 (14.7–27.3) μm. The polar capsules were elongated and of unequal size, with lengths of 4.9 ± 0.4 (4.0–5.9) μm and 5.2 ± 0.4 (4.6–6.0) μm for the longest and shortest axes, respectively. Capsule width was 1.8 ± 0.2 (1.5–2.2) μm. Each capsule contained a polar filament with six to eight turns. There was no mucous envelope or iodinophilous vacuole. Morphometric differences between this parasite and other species of the genus Henneguya indicated that the parasite observed in C. nagelii is a new species. This is the first species of Myxosporea described in Peixe’s River.

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Acknowledgments

The authors would like to thank Carlos Cesar Ramos, the technical from Electron Microscopy Laboratory (Department of Pathology) of the Medical School of Botucatu University-UNESP, who assisted with the transmission electron microscopy. The authors would like to thank Elisa Pinto de Oliveira for editing the English.

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Authors and Affiliations

  1. Instituto de Biociências, Departamento de Parasitologia, UNESP–Universidade Estadual Paulista, Campus de Botucatu, Botucatu, São Paulo, Brazil

    Rodney Kozlowiski de Azevedo, Vanessa Doro Abdallah, Jaciara Vanessa Krüger Paes & Reinaldo José Da Silva

  2. Laboratório de Pesquisa Edilson Matos, UFPA–Universidade Federal do Pará, Belém, Brazil

    Patrícia Matos

  3. Laboratório de Pesquisa Carlos Azevedo, UFRA–Universidade Federal Rural da Amazônia, Belém, Pará, Brazil

    Michele Velasco & Edilson Matos

Authors
  1. Rodney Kozlowiski de Azevedo
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  2. Vanessa Doro Abdallah
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  3. Jaciara Vanessa Krüger Paes
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  4. Reinaldo José Da Silva
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  5. Patrícia Matos
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  6. Michele Velasco
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  7. Edilson Matos
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Correspondence to Rodney Kozlowiski de Azevedo.

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Sponsorships: FAPESP (2010/06564-5, 2011/00010-0, 2009/51726-6, 2009/53316-0), CNPq (312590/2009-1), PROCAD CAPES (Auxílio 032–2006).

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de Azevedo, R.K., Abdallah, V.D., Paes, J.V.K. et al. Henneguya nagelii n. sp. (Myxozoa: Myxobolidae) in Cyphocharax nagelii (Steindachner, 1881) (Teleostei: Characiformes: Curimatidae) from the Peixe’s River, São Paulo State, Brazil. Parasitol Res 112, 3601–3605 (2013). https://doi.org/10.1007/s00436-013-3546-5

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