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New genera and species of paramphistomes (Digenea: Paramphistomoidea: Cladorchiidae) parasitic in fishes from the Amazon basin in Peru

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Abstract

Two new genera and three new species of paramphistomoid digeneans are described in the family Cladorchiidae Fischoeder, 1901 from doradid, heptapterid, pimelodid and pseudopimelodid fishes in the Amazon River in Peru. Goeldamphistomum amazonum n. g., n. sp. (type-species) from Goeldiella eques (Müller & Troschel) (type-host) and Tenellus trimaculatus (Boulenger), and Goeldamphistomum peruanum n. g., n. sp. from Duopalatinus peruanus Eigenmann & Allen (type-host), Calophysus macropterus (Lichtenstein) and Microglanis sp. are placed in the Dadayiinae Fukui, 1929. Both species have an accessory acetabular sucker, which distinguishes the genus from all taxa previously reported from South American freshwater fishes. They differ from each other primarily in that G. amazonum has a prebifurcal genital pore and oblique, separated testes, the levels of which rarely overlap longitudinally, whereas G. peruanum has a postbifurcal genital pore and testes directly to obliquely tandem. Iquitostrema papillatum n. g., n. sp. (Kalitrematinae Travassos, 1933) from the intestine of Hassar orestis (Steindachner) differs from other members of the subfamily in the combination of a massive acetabulum with a papillate luminal surface and symmetrical testes which overlie the caeca close to the caecal arch. These are the first records of paramphistomes from the five host species studied here.

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Acknowledgements

The authors are indebted to two anonymous reviewers for valuable remarks and to Roman Kuchta (České Budějovice), Sophie de Chambrier, Sandrine Coquille (both Geneva), Carlos Alfonso Mendoza-Palmero (Mexico City) and Martin Mortenthaler (Iquitos) for their invaluable help with collection and dissection of fish. Thanks are also due to Célio Ubirajara Magalhães Filho, curator of the Helminthological Collection of the Instituto Nacional de Pesquisas do Amazonas, for lending type and voucher specimens of cladorchiids.

Funding

This study was supported by the Czech Science Foundation (project No. P505/12/G112) and Institute of Parasitology (institutional support RVO 60077344). CP was supported by a postgraduate fellowship from CNPq; this study is part of her PhD thesis.

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Authors and Affiliations

  1. Programa de Pós-Graduação em Ciências Veterinárias, Universidade Federal Rural do Rio de Janeiro (UFRRJ), Seropédica, RJ, CEP 23851-970, Brazil

    Camila Pantoja & José Luis Luque

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

    Tomáš Scholz

  3. Departamento de Parasitologia Animal, UFRRJ, Caixa Postal 74.540, Seropédica, RJ, CEP 23851-970, Brazil

    José Luis Luque

  4. Creigiau Llwydion, Heol y Maes, Coelbren, Neath, SA10 9PT, UK

    Arlene Jones

Authors
  1. Camila Pantoja
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  2. Tomáš Scholz
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  3. José Luis Luque
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  4. Arlene Jones
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Correspondence to Tomáš Scholz or Arlene Jones.

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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 urn:lsid:zoobank.org:pub:F18E02DA-F8ED-49D3-87BE-2E252612C18C. 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 Digenea.

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Pantoja, C., Scholz, T., Luque, J.L. et al. New genera and species of paramphistomes (Digenea: Paramphistomoidea: Cladorchiidae) parasitic in fishes from the Amazon basin in Peru. Syst Parasitol 95, 611–624 (2018). https://doi.org/10.1007/s11230-018-9808-y

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