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Mayarhynchus karlae n. g., n. sp. (Acanthocephala: Neoechinorhynchidae), a parasite of cichlids (Perciformes: Cichlidae) in southeastern Mexico, with comments on the paraphyly of Neoechynorhynchus Stiles & Hassall, 1905

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Abstract

Mayarhynchus n. g. (Acanthocephala: Neoechinorhynchidae) is erected for Mayarhynchus karlae n. g, n. sp. described from the intestine of four species of cichlid fishes distributed from southeastern Mexico. The new genus placed in the family Neoechinorhynchidae (Ward, 1917) Van Cleave, 1928, is readily distinguished from the other 17 genera in the family by having a small proboscis armed with 45–46 relatively weak rooted hooks arranged in nine longitudinal rows of five hooks each. In addition, Mayarhynchus n. g., n. sp. is diagnosed by the presence of a short trunk, body wall with five dorsal and one ventral giant hypodermal nuclei, proboscis receptacle nearly cylindrical with single layered wall, lemnisci broad and flat with large nuclei, testes in tandem, cement gland with eight large nuclei, and eggs elongate to oval. Partial sequences of the cytochrome c oxidase subunit 1 (cox1), internal transcribed spacers (ITS1 + 5.8S + ITS2), and the D2-D3 domains of the large subunit rRNA gene (28S) were obtained for five specimens of the new species and other species belonging to the Neoechinorhynchidae. Phylogenetic analyses confirmed that the new genus belongs to the Neoechynorhynchidae and indicated that the genus Neoechynorhynchus Stiles & Hassall, 1905 is not monophyletic. Comparison between three populations of the new species yielded nine variable sites for cox1, 11 for ITS and four for 28S.

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  • 28 July 2017

    An erratum to this article has been published.

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Acknowledgements

We thank Leopoldo Andrade, Eduardo Hernández, Alejandra López and Carlos Mendoza for their help during field work, and Luis García-Prieto (Instituto de Biología, UNAM) for the loan of specimens from the CNHE. We are grateful to Berenit Mendoza (Instituto de Biología, UNAM) for her help to obtain SEM microphotographs.

Funding

This research was partially funded by the Programa de Apoyo a Proyectos de Investigación e Inovación Tecnológica (PAPIIT No IN206716) and the Consejo Nacional de Ciencia y Tecnología (CONACYT No. 179048) to MGV.

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Authors and Affiliations

  1. Universidad de la Sierra Sur, División de Estudios de Postgrado, Ciudad Universitaria, Guillermo Rojas Mijangos S/N, Miahuatlán de Porfirio Díaz, C. P. 70800, Oaxaca, Mexico

    Carlos D. Pinacho-Pinacho

  2. Instituto de Biología Marina y Pesquera Almirante Storni, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) y Escuela Superior de Ciencias Marinas (ESCiMar), Universidad Nacional del Comahue, Güemes 1030, 8520, San Antonio Oeste, Río Negro, Argentina

    Jesús S. Hernández-Orts

  3. Laboratorio de Helmintología, Instituto de Biología, Universidad Nacional Autónoma de México, Ap. Postal 70-153, Ciudad Universitaria, C. P. 04510, Ciudad de México, Mexico

    Ana L. Sereno-Uribe, Gerardo Pérez-Ponce de León & Martín García-Varela

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  1. Carlos D. Pinacho-Pinacho
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Correspondence to Carlos D. Pinacho-Pinacho.

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All applicable institutional, national and international guidelines for the care and use of animals were followed. Hosts were collected under the Cartilla Nacional de Colector Científico de Flora y Fauna Silvestre FAUT 0202 issued by the Secretaria del Medio Ambiente y Recursos Naturales (SEMARNAT), to MGV.

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This article was registered in the Official Register of Zoological Nomenclature (ZooBank) as C29E3850-3886-4B86-8D87-662A3FAFE7A3. 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 Acanthocephala.

An erratum to this article is available at https://doi.org/10.1007/s11230-017-9743-3.

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Pinacho-Pinacho, C.D., Hernández-Orts, J.S., Sereno-Uribe, A.L. et al. Mayarhynchus karlae n. g., n. sp. (Acanthocephala: Neoechinorhynchidae), a parasite of cichlids (Perciformes: Cichlidae) in southeastern Mexico, with comments on the paraphyly of Neoechynorhynchus Stiles & Hassall, 1905. Syst Parasitol 94, 351–365 (2017). https://doi.org/10.1007/s11230-017-9704-x

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