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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 EMAIL logo , Lidiane Franceschini , Maria Isabel Müller and Reinaldo José da Silva
Published/Copyright: April 13, 2018
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Acta Parasitologica
From the journal Acta Parasitologica Volume 63 Issue 2

Abstract

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

Acknowledgments

This work was supported by FAPESP - Fundação de Amparo á Pesquisa do Estado de São Paulo (São Paulo Research Foundation) (A.C.Z., grant numbers 2011/23588-8, 2015/11542-4, 2016/07829-9; L.F., grant number 2012/07850-7), CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (the Coordination for the Improvement of Higher Education Personnel) and CAPES/PNPD (L.F.: 17/2016); AUX-PE-PNPD (M.I.M., grant number 3005/2010), the Young Researcher Program PROPE-UNESP (M. I. M., grant number 02/2016); FUNEP - Fundação de Apoio a Pesquisa, Ensino e Extensão (the Research, Teaching and Extension Support Foundation) (grant number 1.01852/2011); R.J.S. was supported by CNPq (grant number 309125/2017-0) and CNPq-PROTAX (grant number 440496/2015-2) / FAPESP (grant number 2016/50377-1). We are grateful to Edmir Daniel Carvalho (in memoriam), Sandro Geraldo de Castro Britto, Diogo Freitas Souza, Marcos Gomes Nogueira, Duke Energy and CELAN (Central Elétrica Anhanguera) for logistical support during the collections.

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Received: 2017-7-4
Revised: 2017-12-13
Accepted: 2018-1-15
Published Online: 2018-4-13
Published in Print: 2018-6-26

© 2018 W. Stefański Institute of Parasitology, PAS

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https://doi.org/10.1515/ap-2018-0030
Keywords for this article
Characid fishes; monogenean; ectoparasite; 28S rDNA fragments; Neotropical region

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