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Spinitectus aguapeiensis n. sp. (Nematoda: Cystidicolidae) from Pimelodella avanhandavae Eigenmann (Siluriformes: Heptapteridae) in the River Aguapeí, Upper Paraná River Basin, Brazil

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Abstract

Nematodes belonging to Spinitectus Fourment, 1883 (Nematoda: Cystidicolidae) were found in the intestine of Pimelodella avanhandavae Eigenmann (Siluriformes: Heptapteridae) from the Aguapeí River, Brazil. They represent a new species, Spinitectus aguapeiensis n. sp., which differs morphologically from its congeners in the body length, the number of spinose rings, the location of the excretory pore, the number of precloacal papillae and the length of the spicules. The new species is the first South American species within the genus with a remarkably spirally coiled posterior extremity in males and the largest spicules. It is also the second species with the highest number of precloacal papillae and has unique shape of the small spicule. Spinitectus aguapeiensis n. sp. is the first helminth species found in P. avanhandavae, the fourth species of this genus recorded in the River Paraná Basin and the sixth species of Spinitectus in South America.

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Acknowledgements

The authors thank the Companhia Elétrica de São Paulo (CESP) for the logistical support during sampling. Thanks are also due to Tomáš Scholz for hosting AAA, František Moravec for help with nematode identification and the staff of the Laboratory of Electron Microscopy, all from the Institute of Parasitology, Biology Centre of the Czech Academy of Sciences in České Budějovice, as well as to Janneth Padilla Saldívar from El Colegio de la Frontera Sur for her help with illustrations.

Funding

This study was funded by Fundação de Amparo à Pesquisa do Estado de São Paulo – FAPESP (2012/22895–7, 2015/22382–8: AAA); Institute of Parasitology (RVO: 60077344: AAA); Czech Science Foundation (Project No. P505/12/G112: DGS; AAA); CNPq (PQ-2 – 307808/2014-9: RJS) and CNPq-PROTAX (440496/2015-2)/FAPESP 2016/50377-1: RJS).

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Authors and Affiliations

  1. Departamento de Parasitologia, Instituto de Biociências, Universidade Estadual Paulista (UNESP), Distrito de Rubião Júnior s/n, Botucatu, São Paulo, CEP 18618–970, Brazil

    Aline Angelina Acosta & Reinaldo José da Silva

  2. El Colegio de la Frontera Sur (ECOSUR), unidad Chetumal. Av. Centenario km. 5.5, 77014, Chetumal, Quintana Roo, Mexico

    David González-Solís

  3. Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Branišovská 31, 370 05, České Budějovice, Czech Republic

    David González-Solís

Authors
  1. Aline Angelina Acosta
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  2. David González-Solís
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  3. Reinaldo José da Silva
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Corresponding author

Correspondence to David González-Solís.

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The authors declare that they have no conflict of interest.

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All applicable institutional, national and international guidelines for the care and use of animals were followed.

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This article was registered in the Official Register of Zoological Nomenclature (ZooBank) as 3FF16301-85A1-41BB-AA88-C22EC4D44DB3. This article was published as an Online First article on the online publication date shown on this page. The article should be cited by using the doi number. This is the Version of Record.

This article is part of the Topical Collection Nematoda.

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Acosta, A.A., González-Solís, D. & da Silva, R.J. Spinitectus aguapeiensis n. sp. (Nematoda: Cystidicolidae) from Pimelodella avanhandavae Eigenmann (Siluriformes: Heptapteridae) in the River Aguapeí, Upper Paraná River Basin, Brazil. Syst Parasitol 94, 649–656 (2017). https://doi.org/10.1007/s11230-017-9729-1

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