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Lamellodiscus theroni sp. nov. (Monogenea, Diplectanidae), a gill parasite from Diplodus puntazzo (Teleostei, Sparidae) from the Mediterranean Sea

1Laboratoire de Parasitologie, Faculté des Sciences Biologiques, U.S.T.H.B., BP 32, El Alia, Bab Ezzouar, Alger, Algérie

2Station Méditerranéenne de l’Environnement Littoral, 1 quai de la Daurade, 34200, Sčte, France

© 2007 W. Stefański Institute of Parasitology, PAS. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. (CC BY-NC-ND 3.0)

Citation Information: Acta Parasitologica. Volume 52, Issue 4, Pages 305–309, ISSN (Online) 1896-1851, ISSN (Print) 1230-2821, DOI: 10.2478/s11686-007-0052-x, December 2007

Publication History

Published Online:


We propose to name as Lamellodiscus theroni sp. nov., the gill parasite of Diplodus puntazzo (Cetti) that was reported by Euzet (1984) as L. ergensi Euzet and Oliver, 1966 in Kerkennah Island (Tunisia). L. theroni sp. nov. was also found specific to D. puntazzo in Algiers Bay (Algeria) and in Gulf of Lion (France). The host specificity of various Lamellodiscus species on D. puntazzo is briefly discussed. Within Lamellodiscus, L. theroni belongs to the “ignoratus” group characterized by a “lyre” shaped male copulatory organ and to the “ergensi” subgroup, characterized by a complex morphology of the haptoral dorsal bars. L. theroni differs from the five other species of this subgroup (L. ergensi, L. kechemirae, L. tomentosus, L. sanfilippoi, L. baeri) by the morphology and the size of the haptoral dorsal bar. L. theroni, as well as, L. hilii, L. bidens, L. impervius, was only reported on the sparid Diplodus puntazzo. These parasite species are all considered as oioxenic.

Keywords: Monogenea; Diplectanidae; Lamellodiscus theroni sp. nov.; Sparidae; Diplodus puntazzo; Mediterranean Sea

  • [1] Amine F., Euzet L. 2005. Deux espèces nouvelles du genre Lamellodiscus Johnston & Tiegs, 1922 (Monogenea: Diplectanidae) parasites de Sparidae (Teleostei) des côtes de l’Algérie. Systematic Parasitology, 60, 187–196. DOI: 10.1007/s11230-004-6346-6. http://dx.doi.org/10.1007/s11230-004-6346-6 [CrossRef]

  • [2] Amine F., Euzet L., Kechemir-Issad N. 2006a. Description de deux nouvelles espèces de Lamellodiscus Johnston & Tiegs, 1922 (Monogenea: Diplectanidae) du groupe morphologique ‘ignoratus’, parasites de Diplodus sargus et D. vulgaris (Teleostei: Sparidae). Systematic Parasitology, 64, 37–45. DOI: 10.1007/s11230-005-9016-4. http://dx.doi.org/10.1007/s11230-005-9016-4 [CrossRef]

  • [3] Amine F., Neifar L., Euzet L. 2006b. Lamellodiscus sanfilippoi n. sp. (Monogenea, Diplectanidae) parasite from the gills of Diplodus sargus (Teleostei, Sparidae) in Mediterranean Sea. Parasite, 13, 45–49. [CrossRef] [PubMed]

  • [4] Euzet L. 1984. Diplectanidae (Monogenea) parasites de poissons des iles Kerkennah (Tunisie). Archives de l’Institut Pasteur de Tunis, 61, 463–474.

  • [5] Malmberg G.V. 1957. On the occurrence of Gyrodactylus on Swedish fishes. [Skrifter Utgivna av Sodra Sveriges Fiskeriforening], 19–76 (In Swedish, with description of species and a summary in English).

  • [6] Oliver G. 1987. Les Diplectanidae Bychowsky, 1957 (Monogenea, Monopisthocotylea, Dactylogyridea). Systématique, Biologie, Ontogénie, Écologie, Essai de phylogenèse. Thèse d’État, Académie de Montpellier, Université des Sciences et Techniques du Languedoc, Montpellier, 433 pp.

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