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Acta Parasitologica

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Volume 63, Issue 2


A new species of Cacatuocotyle (Monogenea, Dactylogyridae) parasitizing Astyanax spp. (Characiformes, Characidae) from Brazil, including molecular data and a key to species identification

Aline Cristina Zago
  • Corresponding author
  • São Paulo State University (Unesp), Institute of Biosciences, Botucatu, Brazil, CEP 18618-689
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/ Lidiane Franceschini
  • São Paulo State University (Unesp), Institute of Biosciences, Botucatu, Brazil, CEP 18618-689
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/ Maria Isabel Müller
  • São Paulo State University (Unesp), Institute of Biosciences, Botucatu, Brazil, CEP 18618-689
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/ Reinaldo José da Silva
  • São Paulo State University (Unesp), Institute of Biosciences, Botucatu, Brazil, CEP 18618-689
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Published Online: 2018-04-13 | DOI: https://doi.org/10.1515/ap-2018-0030


The present study describes Cacatuocotyle papilionis n. sp. (Monogenea, Dactylogyridae) from the skin of the characid fishes Astyanax lacustris (Lütken, 1875) (=Astyanax altiparanae Garutti & Britski, 2000) and Astyanax fasciatus (Cuvier, 1819) (Characiformes, Characidae) from the Southeast of Brazil, supported by morphological and molecular data. The new species differs from all congeners, mainly due to the morphology of the ventral bar (resembling a butterfly), accessory piece, and the number of rings of the male copulatory organ (MCO), comprising a coiled tube with 4.5-5.5 counterclockwise rings. The first molecular data for this monogenean genus is provided in this study, using the partial sequences of the ribosomal gene (28S), as well as providing an identification key to the species.

Keywords: Characid fishes; monogenean; ectoparasite; 28S rDNA fragments; Neotropical region


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About the article

Received: 2017-07-04

Revised: 2017-12-13

Accepted: 2018-01-15

Published Online: 2018-04-13

Published in Print: 2018-06-26

Citation Information: Acta Parasitologica, Volume 63, Issue 2, Pages 261–269, ISSN (Online) 1896-1851, ISSN (Print) 1230-2821, DOI: https://doi.org/10.1515/ap-2018-0030.

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