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Systematic Parasitology

, Volume 94, Issue 7, pp 819–829 | Cite as

Morphological and molecular characterisation of Aporocotyle margolisi Smith, 1967 (Digenea: Aporocotylidae) from the North Pacific hake Merluccius productus (Ayres) (Gadiformes: Merlucciidae) off Oregon, USA

  • Jesus S. Hernández-Orts
  • David I. Hernández-Mena
  • Gema Alama-Bermejo
  • Roman Kuchta
  • Kym C. Jacobson
Article
  • 159 Downloads
Part of the following topical collections:
  1. Digenea

Abstract

Aporocotylid blood flukes conspecific with Aporocotyle margolisi Smith, 1967 were collected from the bulbus arteriosus of the North Pacific hake Merluccius productus (Ayres). This study revisits the morphology of A. margolisi, including drawings, measurements and scanning electron microscopy images, and provides for the first time molecular data for the large subunit of the ribosomal RNA (28S rDNA) and the mitochondrial cytochrome c oxidase subunit 1 (cox1) genes for this species. A 28S rDNA phylogenetic study of A. margolisi, and all available Aporocotyle spp., was also performed. The distribution range of A. margolisi is extended to the Pacific coast of the USA. We provide a morphological comparison of Aporocotyle spp. from the Pacific coast in North America as well as other Aporocotyle spp. infecting hake. Comparisons with the original description revealed that the new specimens of A. margolisi were considerably larger with respect to all morphological features, except for shorter spines. Molecular results showed a close relationship between A. margolisi and A. argentinensis Smith, 1969 from the Argentine hake Merluccius hubbsi Marini. The phylogenetic relationships of Aporocotyle spp. point to a possible co-speciation of hakes species and these blood fluke parasites.

Notes

Acknowledgements

We are grateful to Heather Munro Mann (Midwater Trawlers Cooperative, Newport, Oregon) for providing the fish analysed in this study. We also thank Alejandro Oceguera for his assistance with the molecular analyses. Institutional support was given to D.I.H.-M. by the Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México.

Funding

This study was supported by the Czech Science Foundation (projects ECIP P505/12/G112 and GP14-28784P), the Institute of Parasitology, Biology Centre of the Czech Academy of Sciences (grant number RVO: 60077344) and the Programa de Apoyo a Proyectos de Investigación e Innovación Tecnológica (PAPIIT)-UNAM (project IA202016). D.I.H.-M. benefits from a PhD student grant from the Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México, and from the National Council on Science and Technology (CONACyT) of the Mexican Government (scholarship number 245193).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

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

Supplementary material

11230_2017_9740_MOESM1_ESM.pdf (69 kb)
Supplementary material 1 (PDF 69 kb)

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Copyright information

© Springer Science+Business Media B.V. 2017

Authors and Affiliations

  • Jesus S. Hernández-Orts
    • 1
  • David I. Hernández-Mena
    • 2
    • 3
  • Gema Alama-Bermejo
    • 1
    • 4
    • 5
  • Roman Kuchta
    • 4
  • Kym C. Jacobson
    • 6
  1. 1.Centro de Investigación Aplicada y Transferencia Tecnológica en Recursos Marinos Almirante Storni (CIMAS – CCT CONICET – CENPAT) y Escuela Superior de Ciencias Marinas (ESCiMar)Universidad Nacional del ComahueSan Antonio OesteArgentina
  2. 2.Laboratorio de Helmintología, Instituto de BiologíaUniversidad Nacional Autónoma de MéxicoMexico CityMexico
  3. 3.Posgrado en Ciencias BiológicasUniversidad Nacional Autónoma de MéxicoMexico CityMexico
  4. 4.Institute of ParasitologyBiology Centre of the Czech Academy of SciencesČeské BudějoviceCzech Republic
  5. 5.Department of MicrobiologyOregon State UniversityCorvallisUSA
  6. 6.Newport Research Station, Northwest Fisheries Science CenterNational Marine Fisheries ServiceNewportUSA

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