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Volume 61, Issue 3


Supplementary studies on Anacanthorus penilabiatus and Mymarothecium viatorum (Monogenea: Dactylogyridae) from Piaractus mesopotamicus (Characiformes: Serrasalmidae) in Brazil

Maria Isabel Müller
  • Corresponding author
  • Department of Parasitology, Institute of Biosciences, State University of São Paulo, UNESP, Distrito de Rubiäo Júnior s/n CEP:18618-970, Botucatu, SP, Brazil
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/ Paulo Sãrgio Ceccarelli
  • ICMBio – CEPTA, Chico Mendes Institute of Conservation of the Biodiversity, Rodovia SP-201, Km 6.5 CEP: 13630-970, Pirassununga, SP, Brazil
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Marlene Tiduko Ueta
  • Department of Animal Biology, Institute of Biology, State University of Campinas, UNICAMP, Rua Monteiro Lobato, 255, CEP: 13083-862, Campinas, SP, Brazil
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Published Online: 2016-07-21 | DOI: https://doi.org/10.1515/ap-2016-0067


The dactylogyrid monogeneans Anacanthorus penilabiatus (Boeger, Husak and Martins, 1995) and Mymarothecium viatorum(Boeger, Piasecki and Sobecka, 2002), commonly found in large quantities in farmed Piaractus mesopotamicus (Holmberg, 1887) in Brazil, were collected from three fish farms located in the State of São Paulo, Brazil. Morphological and molecular identification, scanning electron microscopy, histopathological and descriptive parameters data were performed. A total of 278 specimens of P. mesopotamicus were gathered from February 2008 and July 2010. Prevalence (P) and mean intensity of infection (MII) data was taken at each location. The data showed prevalence and mean intensity of infection annually, with numbers such as P = 91.2% and MII = 50 worms/fish (Pirassununga), P = 60% and MII = 39.2 worms/fish (Mogi Mirim), and P = 100% and MII = 204.8 worms/fish (Itapira). Histopathological results showed hyperplasia of the secondary lamellae, and hypersecretion of mucus was also observed. A phylogenetic topology was inferred using complete SSU (18S) ribosomal rDNA, positioning Anacanthorus penilabiatus and Mymarothecium viatorum among other monopisthocotyleans available in GenBank.

Keywords: Freshwater fish; pacu; monogenean; ribosomal DNA


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About the article

Received: 2015-09-03

Revised: 2016-01-28

Accepted: 2016-03-07

Published Online: 2016-07-21

Published in Print: 2016-09-01

Citation Information: Acta Parasitologica, Volume 61, Issue 3, Pages 508–515, ISSN (Online) 1896-1851, ISSN (Print) 1230-2821, DOI: https://doi.org/10.1515/ap-2016-0067.

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