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First description of the male and subgravid female of Philometra serranellicabrillae Janiszewska, 1949 (Nematoda: Philometridae), a gonad-infecting parasite of the comber Serranus cabrilla (Linnaeus) (Serranidae) off Tunisia

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Abstract

The male and subgravid female of Philometra serranellicabrillae Janiszewska, 1949 (Philometridae) collected from the gonads of Serranus cabrilla (Linnaeus) (Serranidae) off Tunisia are described for the first time based on light and scanning electron microscopical studies. The male of this nematode can be separated from other congeneric gonad-infecting nominal species in the structure and shape of the gubernaculum (e.g. absence of a dorsal protuberance and a median smooth field). The shape of the male posterior region is unique in that it bears a pair of big circular papillae posterior to the cloacal opening, which is also present in other Philometra spp. from serranids, i.e. P. indica Moravec & Manoharan, 2014, P. inexpectata Moravec, Chaabane, Justine & Neifar, 2016 and P. jordanoi (López-Neyra, 1951) Yamaguti, 1961. Moreover, P. serranellicabrillae differs from its congeners in other fish families from the Mediterranean Sea, in the length of spicules and gubernaculum.

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Acknowledgements

Authors’ thanks are due to Janneth Padilla from El Colegio de la Frontera Sur and Blanka Škorikova for help with illustrations and the staff of the Laboratory of Electron Microscopy, both from the Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, Česke Budějovice.

Funding

This study was funded by the Ministry of Higher Education and Scientific Research of Tunisia, University of Tunis El Manar, Faculty of Sciences of Tunis, and the Czech Science Foundation (Project P505/12/G112) and the Institute of Parasitology (RVO 60077344).

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Authors and Affiliations

  1. Laboratory of Diversity, Management and Conservation of Biological Systems, Faculty of Sciences of Tunis, University of Tunis El Manar, LR18ES06, Tunis, Tunisia

    Nessrine Ghanmi & Lamia Gargouri

  2. El Colegio de la Frontera Sur (ECOSUR), unidad Chetumal. Av. Centenario km. 5.5, Chetumal, Quintana Roo, 77014, 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. Nessrine Ghanmi
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Correspondence to David González-Solís.

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Ghanmi, N., González-Solís, D. & Gargouri, L. First description of the male and subgravid female of Philometra serranellicabrillae Janiszewska, 1949 (Nematoda: Philometridae), a gonad-infecting parasite of the comber Serranus cabrilla (Linnaeus) (Serranidae) off Tunisia. Syst Parasitol 96, 673–679 (2019). https://doi.org/10.1007/s11230-019-09879-3

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