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Acta Parasitologica

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Volume 63, Issue 4


A new species of Aphanoblastella Kritsky, Mendoza-Franco and Scholz, 2000 (Monogenea, Dactylogyridae) parasitic on heptapterid catfish (Siluriformes) in the Neotropical region

Fabio H. Yamada / Aline A. Acosta
  • São Paulo State University (UNESP), Institute of Biosciences, Botucatu, São Paulo State, Brazil
  • Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Branišovská 31, 370 05 České Budĕjovice, Czech Republic
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Priscilla de O. F. Yamada
  • São Paulo State University (UNESP), Institute of Biosciences, Botucatu, São Paulo State, Brazil
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Tomáš Scholz
  • Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Branišovská 31, 370 05 České Budĕjovice, Czech Republic
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Reinaldo J. da Silva
  • São Paulo State University (UNESP), Institute of Biosciences, Botucatu, São Paulo State, Brazil
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2018-10-18 | DOI: https://doi.org/10.1515/ap-2018-0092


Aphanoblastella magna n. sp. is described from the gills of the heptapterid catfish Pimelodella avanhandavae Eigenmann, 1917 in southeastern Brazil (Paraná River Basin). This new species most closely resembles Aphanoblastella chagresii Mendoza-Franco, Aguirre-Macedo and Vidal-Martínez, 2007 described from a congeneric fish host in Panama, but can be distinguished by the shape of the accessory piece and shape and size of the ventral and dorsal bars. From the other species of the genus, A. magna n. sp. differs mainly in the shape of the male copulatory organ (MCO), which is sinuous, versus spirally coiled in other species of the genus, except for A. travassosi (Price, 1938), and by the accessory piece which resembles a ‘shoehorn’. Aphanoblastella magna n. sp. is the seventh species of the genus and the first dactylogyrid described from P. avanhandavae. A partial 28S rDNA gene sequence of the new species is also provided; it forms a monophyletic clade with two congeners for which molecular data are available.

Keywords: Ancyrocephalinae; freshwater fish; catfish; Neotropical region; Paraná River basin; 28S rDNA


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About the article

Received: 2018-03-01

Revised: 2018-07-25

Accepted: 2018-07-26

Published Online: 2018-10-18

Published in Print: 2018-12-19

Citation Information: Acta Parasitologica, Volume 63, Issue 4, Pages 772–780, ISSN (Online) 1896-1851, ISSN (Print) 1230-2821, DOI: https://doi.org/10.1515/ap-2018-0092.

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