Systematic Parasitology

, Volume 94, Issue 9, pp 979–987 | Cite as

Redescription of Philometra filiformis (Stossich, 1896) (Nematoda: Philometridae), a gonad-infecting parasite of the common pandora Pagellus erythrinus (Linnaeus) (Sparidae) in the Mediterranean Sea, including new taxonomic features revealed by SEM

  • František MoravecEmail author
  • Nessrine Ghanmi
  • Amira Chaabane
  • Lamia Gargouri
  • Jean-Lou Justine
Part of the following topical collections:
  1. Nematoda


The insufficiently known nematode species Philometra filiformis (Stossich, 1896) (Philometridae) is redescribed based on light and scanning electron microscopical (SEM) examinations of specimens collected from the ovaries of the type-host, the common pandora Pagellus erythrinus (Linnaeus) (Perciformes, Sparidae), from off the Mediterranean coast of Tunisia. The male of this species was studied with SEM for the first time, which revealed some new, taxonomically important morphological features. The male posterior end has a caudal mound consisting of two lateral parts widely separated dorsally from each other, four pairs of small adanal papillae, a pair of large but moderately developed papillae located posterior to the cloacal aperture and a pair of small phasmids. The distal end of the gubernaculum is unique among all but one gonad-infecting species of Philometra Costa, 1845 by the chevron-shaped dorsal lamellar structures forming a median longitudinal range. Philometra filiformis is for the first time reported from Tunisian coastal waters, being the seventh philometrid species so far recorded from marine fishes off Tunisia.



Thanks are due to the staff of the Laboratory of Electron Microscopy, Institute of Parasitology, Biology Centre of the CAS, České Budějovice, for their technical assistance, and to Blanka Škoríková of the same Institute for help with the illustrations.


This study was partly supported by the Ministry of Higher Education and Scientific Research of Tunisia, the Czech Science Foundation (grant P505/12/G112) and by institutional support (RVO: 60077344, Institute of Parasitology, BC AS CR).

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.


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Copyright information

© Springer Science+Business Media B.V. 2017

Authors and Affiliations

  • František Moravec
    • 1
    Email author
  • Nessrine Ghanmi
    • 2
  • Amira Chaabane
    • 3
  • Lamia Gargouri
    • 2
  • Jean-Lou Justine
    • 4
  1. 1.Institute of ParasitologyBiology Centre of the Czech Academy of SciencesČeské BudějoviceCzech Republic
  2. 2.Unité de Recherche Bio-Écologie Animale et Systématique Évolutive, Faculté des SciencesUniversité Tunis El ManarTunisTunisia
  3. 3.Laboratoire de Biodiversité et Écosystèmes Aquatiques, Faculté des Sciences de SfaxUniversité de SfaxSfaxTunisia
  4. 4.ISYEB, Institut Systématique, Évolution, Biodiversité, UMR7205 CNRS, EPHE, MNHN, UPMCMuséum d’Histoire NaturelleParis cedex 05France

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