Systematic Parasitology

, Volume 75, Issue 3, pp 159–179 | Cite as

Three new species, Lamellodiscus tubulicornis n. sp., L. magnicornis n. sp. and L. parvicornis n. sp. (Monogenea: Diplectanidae) from Gymnocranius spp. (Lethrinidae: Monotaxinae) off New Caledonia, with the proposal of the new morphological group ‘tubulicornis’ within Lamellodiscus Johnston & Tiegs, 1922

  • Jean-Lou Justine
  • Marine J. Briand


Three new species of Lamellodiscus are described from four (including two undescribed) species of Gymnocranius off New Caledonia, South Pacific. All three species have a similar body anatomy and morphology of the haptoral hard parts and are distinguished on the basis of the male copulatory organ (MCO). Lamellodiscus tubulicornis n. sp. (type-host: G. grandoculis; other host: Gymnocranius sp. B) has an MCO with a tube and horn; L. magnicornis n. sp. (type-host: G. grandoculis; other hosts: G. euanus, Gymnocranius sp. A and Gymnocranius sp. B) has an MCO with a long horn and a membrane; L. parvicornis n. sp. (type-host: G. euanus; other hosts: G. grandoculis and Gymnocranius sp. B) has an MCO with a small horn and a membrane. Lamellodiscus epsilon Yamaguti, 1968 is redescribed based on the type-specimens (from Monotaxis grandoculis off Hawaii). Lamellodiscus sp. is recorded from Gnathodentex aureolineatus off New Caledonia. All these five species have lamellodiscs that exhibit a unique characteristic: the second lamella forms an almost closed circle, in contrast to all other described species of Lamellodiscus in which the second lamella has the form of one or two crescents. Lamellodiscus spp. are usually classified in two groups, the ‘ignoratus’ and ‘elegans’ groups, according to the structure of the lamellodisc; we propose a new ‘tubulicornis’ group for these five species. In addition to their lamellodisc structure, species of the tubulicornis group are also characterised by their egg (elongate in contrast to tetrahedral in the two other groups) and their hosts (monotaxine lethrinids as opposed to mainly sparids). The generic diagnosis of Lamellodiscus given by Amine & Euzet (2005) is amended to include species with elongate eggs.


Male Copulatory Organ Intestinal Bifurcation United States National Parasite Collection Head Organ Vitelline Field 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Trois nouvelles espèces de Lamellodiscus sont décrites de quatre espèces de Gymnocranius (y compris deux non décrites) de Nouvelle-Calédonie, Pacifique Sud. L’anatomie du corps et la morphologie des pièces sclérifiées du hapteur sont similaires chez les trois espèces, qui sont distinguées par leur organe copulateur mâle (OCM). Lamellodiscus tubulicornis n. sp. (hôte-type: G. grandoculis; autre hôte: Gymnocranius sp. B) a un OCM avec tube et corne. L. magnicornis n. sp. (hôte-type: G. grandoculis; autres hôtes: G. euanus, Gymnocranius sp. A, Gymnocranius sp. B) a un OCM avec longue corne et membrane. L. parvicornis n. sp. (hôte-type: G. euanus; autres hôtes: G. grandoculis, Gymnocranius sp. B) a un OCM avec petite corne et membrane. Lamellodiscus epsilon Yamaguti, 1968 est redécrit à partir des spécimens-types (de Monotaxis grandoculis, Hawaï). Lamellodiscus sp. est mentionné de Gnathodentex aureolineatus en Nouvelle-Calédonie. Ces cinq espèces ont des lamellodisques qui montrent une caractéristique originale: la deuxième lamelle forme un cercle presque clos, au contraire des autres espèces décrites de Lamellodiscus chez lesquelles la deuxième lamelle a la forme d’un ou de deux croissants. Les espèces de Lamellodiscus sont habituellement classées en deux groupes ‘ignoratus’ et ‘elegans’, en fonction de la structure des lamellodisques. Nous proposons un nouveau groupe ‘tubulicornis’ pour ces cinq espèces. En plus de la structure de leurs lamellodisques, les espèces du groupe tubulicornis sont aussi caractérisées par leurs œufs (allongés au lieu de tétraédriques dans les deux autres groupes) et leurs hôtes (Lethrinidae Monotaxinae au lieu de majoritairement Sparidae). La diagnose du genre Lamellodiscus par Amine & Euzet (2005) est changée pour inclure des espèces à œuf allongé.



The following colleagues and students participated in the fishing expeditions and the parasitological survey: Susan Lim, Frank Moravec, Amandine Marie, Éric Bureau, Aude Sigura, Adeline Collet, Damien Hinsinger, Guilhem Rascalou and Adeline Grugeaud. Sam Tereua, Miguel Clarque and Napoleon Colombani provided safe navigation. Gérard Mou-Tham caught certain specimens by spear-fishing. Angelo Di Matteo provided technical help. Philippe Borsa (IRD, Nouméa) kindly communicated ichthyological work in progress. Bernard Séret (IRD/MNHN, Paris) identified D. fourmanoiri. Yves Desdevises and Louis Euzet commented usefully on an early draft. Ian Beveridge kindly helped with the Latin. Two anonymous reviewers patiently edited the manuscript.


  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.CrossRefPubMedGoogle Scholar
  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.CrossRefPubMedGoogle Scholar
  3. Amine, F., Euzet, L., & Kechemir-Issad, N. (2007a). Description de Lamellodiscus confusus n. sp. (Monogenea: Diplectanidae), parasite de Sarpa salpa (Teleostei: Sparidae). Parasite, 14, 281–285.PubMedGoogle Scholar
  4. Amine, F., Euzet, L., & Kechemir-Issad, N. (2007b). Lamellodiscus theroni sp. nov. (Monogenea, Diplectanidae), a gill parasite from Diplodus puntazzo (Teleostei, Sparidae) from the Mediterranean Sea. Acta Parasitologica, 52, 305–309.CrossRefGoogle Scholar
  5. Amine, F., Neifar, L., & Euzet, L. (2006b). Lamellodiscus sanfilippoi n. sp. (Monogenea, Diplectanidae) parasite branchial de Diplodus sargus (Teleostei, Sparidae) en Méditerranée. Parasite, 13, 45–49.PubMedGoogle Scholar
  6. Aquaro, G., Riva, C., & Galli, P. (2009). Monogenoids from the gills of Acanthopagrus bifasciatus (Forsskal, 1775) (Perciformes: Sparidae) of the Red Sea, Egypt, with the description of Lamellodiscus donatellae sp. n. (Diplectanidae). Comparative Parasitology, 76, 51–57.CrossRefGoogle Scholar
  7. Béarez, P. (2003). Premier signalement de Scolopsis taeniopterus (Nemipteridae) et de Gymnocranius elongatus (Lethrinidae) en Nouvelle-Calédonie. Cybium, 27, 61–62.Google Scholar
  8. Day, J. J. (2002). Phylogenetic relationships of the Sparidae (Teleostei: Percoidei) and implications for convergent trophic evolution. Biological Journal of the Linnean Society, 76, 269–301.CrossRefGoogle Scholar
  9. Desdevises, Y. (2001). The phylogenetic position of Furnestinia echeneis (Monogenea, Diplectanidae) based on molecular data: a case of morphological adaptation? International Journal for Parasitology, 31, 205–208.CrossRefPubMedGoogle Scholar
  10. Desdevises, Y. (2006). Determinants of parasite species richness on small taxonomical and geographical scales: Lamellodiscus monogeneans of northwestern Mediterranean sparid fish. Journal of Helminthology, 80, 235–241.PubMedGoogle Scholar
  11. Desdevises, Y., Jovelin, R., Jousson, O., & Morand, S. (2000). Comparison of ribosomal DNA sequences of Lamellodiscus spp. (Monogenea, Diplectanidae) parasitising Pagellus (Sparidae, Teleostei) in the North Mediterranean Sea: species divergence and coevolutionary interactions. International Journal for Parasitology, 30, 741–746.CrossRefPubMedGoogle Scholar
  12. Desdevises, Y., Morand, S., Jousson, O., & Legendre, P. (2002a). Coevolution between Lamellodiscus (Monogenea: Diplectanidae) and Sparidae (Teleostei): The study of a complex host-parasite system. Evolution, 56, 2459–2471.PubMedGoogle Scholar
  13. Desdevises, Y., Morand, S., & Legendre, P. (2002b). Evolution and determinants of host specificity in the genus Lamellodiscus (Monogenea). Biological Journal of the Linnean Society, 77, 431–443.CrossRefGoogle Scholar
  14. Desdevises, Y., Morand, S., & Oliver, G. (2001). Linking specialisation to diversification in the Diplectanidae Bychowsky 1957 (Monogenea, Platyhelminthes). Parasitology Research, 87, 223–230.CrossRefPubMedGoogle Scholar
  15. Diamant, A. (2001). Cross-infections between marine cage-cultured stocks and wild fish in the northern Red Sea: Is the environment at risk? Risk Analysis in Aquatic Animal Health, Proceedings, 202–208.Google Scholar
  16. Euzet, L., & Oliver, G. (1966). Diplectanidae (Monogenea) des Téléostéens de la Mediterranée occidentale. III. Quelques Lamellodiscus Johnston et Tiegs 1922, parasites de poissons du genre Diplodus (Sparidae). Annales de Parasitologie Humaine et Comparée, 41, 573–598.PubMedGoogle Scholar
  17. Froese, R., & Pauly, D. (Eds.). (2009). FishBase. World Wide Web electronic publication.
  18. Fyler, C. A., Caira, J. N., & Jensen, K. (2009). Five new species of Acanthobothrium (Cestoda: Tetraphyllidea) from an unusual species of Himantura (Rajiformes: Dasyatidae) from northern Australia. Folia Parasitologica, 56, 107–128.PubMedGoogle Scholar
  19. Hinsinger, D. D., & Justine, J.-L. (2006). The ‘Pseudorhabdosynochus cupatus group’ (Monogenea: Diplectanidae) on Epinephelus fasciatus, E. howlandi, E. rivulatus and E. merra (Perciformes: Serranidae) off New Caledonia, with descriptions of Pseudorhabdosynochus cyathus n. sp. and P. calathus n. sp. Systematic Parasitology, 64, 69–90.CrossRefPubMedGoogle Scholar
  20. Johnston, T. A., & Tiegs, O. W. (1922). New gyrodactyloid trematodes from Australian fishes together with a reclassification of the super-family Gyrodactyloidea. Proceedings of the Linnean Society of New South Wales, 47, 83–129.Google Scholar
  21. Justine, J.-L. (2004). Three new species of Huffmanela Moravec, 1987 (Nematoda: Trichosomoididae) from the gills of marine fish off New Caledonia. Systematic Parasitology, 59, 29–37.CrossRefPubMedGoogle Scholar
  22. Justine, J.-L. (2005). Species of Pseudorhabdosynochus Yamaguti, 1958 (Monogenea: Diplectanidae) from Epinephelus fasciatus and E. merra (Perciformes: Serranidae) off New Caledonia and other parts of the Indo-Pacific Ocean, with a comparison of measurements of specimens prepared using different methods, and a description of P. caledonicus n. sp. Systematic Parasitology, 62, 1–37.CrossRefPubMedGoogle Scholar
  23. Justine, J.-L. (2007a). Huffmanela spp. (Nematoda, Trichosomoididae) parasites in coral reef fishes off New Caledonia, with descriptions of H. balista n. sp. and H. longa n. sp. Zootaxa, 1628, 23–41.Google Scholar
  24. Justine, J.-L. (2007b). Species of Calydiscoides Young, 1969 (Monogenea: Diplectanidae) from lethrinid fishes, with the redescription of all of the type-specimens and the description of C. euzeti n. sp. from Lethrinus rubrioperculatus and L. xanthochilus off New Caledonia. Systematic Parasitology, 67, 187–209.CrossRefPubMedGoogle Scholar
  25. Justine, J.-L., & Brena, P. F. (2009). Calydiscoides limae sp. nov. (Monogenea, Diplectanidae) from Pentapodus aureofasciatus (Perciformes, Nemipteridae) off New Caledonia. Acta Parasitologica, 54, 22–27.CrossRefGoogle Scholar
  26. Justine, J.-L., Dupoux, C., & Cribb, T. H. (2009). Resolution of the discrepant host-specificity of Pseudorhabdosynochus species (Monogenea, Diplectanidae) from serranid fishes in the tropical Indo-Pacific. Acta Parasitologica, 54, 119–130.CrossRefGoogle Scholar
  27. Kaci-Chaouch, T., Verneau, O., & Desdevises, Y. (2008). Host specificity is linked to intraspecific variability in the genus Lamellodiscus (Monogenea). Parasitology, 135, 607–616.CrossRefPubMedGoogle Scholar
  28. Katharios, P., Hayward, C., Papandroulakis, N., & Divanach, P. (2006). Pathology of Lamellodiscus spp. (Monogenea) parasitizing the gills of sharpsnout seabream and preliminary results of formalin treatment. Bulletin of the European Association of Fish Pathologists, 26, 196–201.Google Scholar
  29. Kritsky, D. C., Jimenez-Ruiz, F. A., & Sey, O. (2000). Diplectanids (Monogenoidea: Dactylogyridea) from the gills of marine fishes of the Persian Gulf off Kuwait. Comparative Parasitology, 67, 145–164.Google Scholar
  30. Lim, L. H. S. (2003). Species of Calydiscoides Young, 1969 (Monogenea; Diplectanidae Bychowsky, 1957; Lamellodiscinae Oliver, 1969) from nemipterid fishes off Peninsular Malaysia. Systematic Parasitology, 55, 115–126.CrossRefPubMedGoogle Scholar
  31. Marie, A. D., & Justine, J.-L. (2005). Monocotylids (Monogenea: Monopisthocotylea) from Aetobatus cf. narinari off New Caledonia, with a description of Decacotyle elpora n. sp. Systematic Parasitology, 60, 175–185.CrossRefPubMedGoogle Scholar
  32. Merella, P., Cherchi, S., Salati, F., & Garippa, G. (2005). Parasitological survey of sharpsnout seabream Diplodus puntazzo (Cetti, 1777) reared in sea cages in Sardinia (western Mediterranean). Bulletin of the European Association of Fish Pathologists, 25, 140–147.Google Scholar
  33. Miller, T. L., & Cribb, T. H. (2007). Phylogenetic relationships of some common Indo-Pacific snappers (Perciformes: Lutjanidae) based on mitochondrial DNA sequences, with comments on the taxonomic position of the Caesioninae. Molecular Phylogenetics and Evolution, 44, 450–460.CrossRefPubMedGoogle Scholar
  34. Mladineo, I., & Maršić-Lučić, J. (2007). Host switch of Lamellodiscus elegans (Monogenea: Monopisthocotylea) and Sparicotyle chrysophrii (Monogenea: Polyopisthocotylea) between cage-reared sparids. Veterinary Research Communications, 31, 153–160.CrossRefPubMedGoogle Scholar
  35. Neifar, L. (2008). Lamellodiscus crampus sp. nov. (Monogenea, Diplectanidae), a parasite of Dentex maroccanus (Teleostei, Sparidae) from off Tunisia. Acta Parasitologica, 53, 258–262.CrossRefGoogle Scholar
  36. Neifar, L., Euzet, L., & Oliver, G. (2004). Lamellodiscus (Plathelminthes, Monogenea, Diplectanidae) nouveaux parasites branchiaux des poissons marins du genre Pagrus (Teleostei, Sparidae). Zoosystema, 26, 365–376.Google Scholar
  37. Oliver, G. (1987). Les Diplectanidae Bychowsky, 1957 (Monogenea, Monopisthocotylea, Dactylogyridea). Systématique. Biologie. Ontogénie. Écologie. Essai de phylogenèse. Unpublished Thèse d’État, Académie de Montpellier, Université des Sciences et Techniques du Languedoc, 433 pp.Google Scholar
  38. Orrell, T. M., & Carpenter, K. E. (2004). A phylogeny of the fish family Sparidae (porgies) inferred from mitochondrial sequence data. Molecular Phylogenetics and Evolution, 32, 425–434.CrossRefPubMedGoogle Scholar
  39. Rascalou, G., & Justine, J.-L. (2007). Three species of Calydiscoides (Monogenea: Diplectanidae) from five Lethrinus spp. (Lethrinidae: Perciformes) off New Caledonia, with a description of Calydiscoides terpsichore sp. n. Folia Parasitologica, 54, 191–202.PubMedGoogle Scholar
  40. Sigura, A., & Justine, J.-L. (2008). Monogeneans of the speckled blue grouper, Epinephelus cyanopodus (Perciformes, Serranidae), from off New Caledonia, with a description of four new species of Pseudorhabdosynochus and one new species of Laticola (Monogenea: Diplectanidae), and evidence of monogenean faunal changes according to the size of fish. Zootaxa, 1695, 1–44.Google Scholar
  41. Toksen, E. (2006). Occurrence of gill parasite Lamellodiscus ignoratus (Palombi, 1943) (Monogenea: Diplectanidae) in cultured sharp-snout sea bream, Diplodus puntazzo (Cetti, 1777) from Izmir, Turkey. Bulletin of the European Association of Fish Pathologists, 26, 174–179.Google Scholar
  42. Yamaguti, S. (1968). Monogenetic trematodes of Hawaiian fishes. Honolulu: University of Hawaii Press, 287 pp.Google Scholar

Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  1. 1.Équipe Biogéographie Marine Tropicale, Unité Systématique, Adaptation, Évolution (CNRS, UPMC, MNHN, IRD)Institut de Recherche pour le DéveloppementNouméa CedexNew Caledonia

Personalised recommendations