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Ceratomyxa azevedoi n. sp. (Myxozoa: Myxosporea) parasitizing the gallbladder of Lutjanus ehrenbergii in the Arabian Gulf

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Abstract

A novel myxosporean species, Ceratomyxa azevedoi sp. n. is described from the gallbladder of the blackspot snapper, Lutjanus ehrenbergii (Peters), captured from the Arabian Gulf off Saudi Arabia. A total of 45 (26.8%) out of 168 fish specimens were found to be infected with Ceratomyxa azevedoi sp. n., the highest prevalence being observed in winter (42.9%, 18/42) and the lowest in autumn (11.9%, 5/42). Mature spores appeared as crescent to slightly elliptical-shaped, measuring 5–7 (6) μm in length and 12 (10–14) μm in thickness, with spherical polar capsules containing three polar filament coils. The morphometric and morphological comparison with similar species revealed the taxonomic novelty of this form, suggesting that it should be considered as new species. The phylogenetic analysis of C. azevedoi sp. n., based on partial SSU rDNA sequences, revealed close genetic relatedness to C. buri with 91.3% homogeneity and to C. hamour, with 90.1% homogeneity.

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Acknowledgements

We extend our appreciation to the Dean of Scientific Research, King Saud University, for funding the work through the research group project number RGP -004.

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Authors and Affiliations

  1. Zoology Department, College of Science, King Saud University, Saudi Arabia, P.O. Box 2455, Riyadh, 11451, Saudi Arabia

    Abdel-Azeem S. Abdel-Baki, Hussain A. Al-Qahtani, Saleh Al-Quraishy & Lamjed Mansour

  2. Zoology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt

    Abdel-Azeem S. Abdel-Baki

  3. Unité de Recherche de Biologie Intégrative et Écologie Evolutive et Fonctionnelle des Milieux Aquatiques, Département de Biologie, Faculté des Sciences de Tunis, Université De Tunis El Manar, Tunis, Tunisia

    Lamjed Mansour

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  1. Abdel-Azeem S. Abdel-Baki
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  2. Hussain A. Al-Qahtani
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  3. Saleh Al-Quraishy
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  4. Lamjed Mansour
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Correspondence to Abdel-Azeem S. Abdel-Baki.

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Abdel-Baki, AA.S., Al-Qahtani, H.A., Al-Quraishy, S. et al. Ceratomyxa azevedoi n. sp. (Myxozoa: Myxosporea) parasitizing the gallbladder of Lutjanus ehrenbergii in the Arabian Gulf. Parasitol Res 116, 2757–2763 (2017). https://doi.org/10.1007/s00436-017-5586-8

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  • DOI: https://doi.org/10.1007/s00436-017-5586-8

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