Parasitology Research

, Volume 118, Issue 12, pp 3327–3336 | Cite as

A new myxozoan species Henneguya unitaeniata sp. nov. (Cnidaria: Myxosporea) on gills of Hoplerythrinus unitaeniatus from Mato Grosso State, Brazil

  • Letícia Pereira ÚngariEmail author
  • Diego Henrique Mirandola Dias Vieira
  • Reinaldo José da Silva
  • André Luiz Quagliatto Santos
  • Rodney Kozlowiski de Azevedo
  • Lucia Helena O’Dwyer
Fish Parasitology - Original Paper


On the basis of morphological and molecular analyses, a new myxozoan parasite is described from the gills of the fish Hoplerythrinus unitaeniatus, collected in the municipality of Nova Xavantina, Mato Grosso State, Brazil. Plasmodia of Henneguya unitaeniata sp. nov. were oval and whitish and were found surrounded by collagen fibers forming plasmodia wall between gill filaments on the gill arch. The spores were ellipsoidal with two similar polar capsules. Morphometric analysis showed a total spore mean length of 23.8 ± 1.5 μm, spore body mean length of 14.5 ± 0.7 μm, caudal appendage mean length of 10.3 ± 1.4 μm, thickness mean length of 4.3 ± 0.3 μm, polar capsule mean length of 4.2 ± 0.5 μm, polar capsule mean width of 1.8 ± 0.3 μm, spore mean width of 4.8 ± 0.4 μm, and 4–5 polar filament coils. Phylogenetic analysis showed Henneguya unitaeniata sp. nov. as a basal species in a subclade formed by myxozoans that parasitize bryconid fishes.


Erythrinidae Histopathology Myxobolidae Phylogeny SSU rDNA 



We thank the team of the Laboratory for Teaching and Research in Wild Animals (LAPAS-UFU) for their assistance in the fish collection. R.J.S. is supported by FAPESP #2016/50377-1; CNPq #309125/2017-0; CNPq-PROTAX #440496/2015-2.

Funding information

We are grateful to FAPESP (Fundação de Amparo à Pesquisa do Estado de São Paulo) and FAPEMIG (Fundação de Amparo à Pesquisa do Estado de Minas Gerais) for financial support.

Compliance with ethical standards

All applicable international, national, and/or institutional guidelines for the care and use of animals were followed (IBAMA license 60640-1).

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Letícia Pereira Úngari
    • 1
    Email author
  • Diego Henrique Mirandola Dias Vieira
    • 1
  • Reinaldo José da Silva
    • 1
  • André Luiz Quagliatto Santos
    • 2
  • Rodney Kozlowiski de Azevedo
    • 3
  • Lucia Helena O’Dwyer
    • 1
  1. 1.Universidade Estadual Paulista (Unesp), Departamento de ParasitologiaInstituto de BiociênciasSão PauloBrazil
  2. 2.Laboratório de Ensino e Pesquisa em Animais Silvestres, Faculdade de Medicina VeterináriaUniversidade Federal de UberlândiaUberlândiaBrazil
  3. 3.Centro Universitário CESMACMaceióBrazil

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