Systematic Parasitology

, Volume 77, Issue 2, pp 81–105 | Cite as

Monogeneans from Epinephelus chlorostigma (Val.) (Perciformes: Serranidae) off New Caledonia, with the description of three new species of diplectanids

  • Jean-Lou Justine
  • Émilie Henry


Gill monogeneans from the brownspotted grouper Epinephelus chlorostigma (Val.) collected in deep water off the coral barrier reef of New Caledonia, South Pacific, comprise seven species. These include the ancyrocephalid Haliotrema sp., the capsalid Allobenedenia cf. epinepheli Yamaguti, 1968, and five diplectanids, namely Pseudorhabdosynochus epinepheli (Yamaguti, 1938), reported in a previous paper, P. cyanopodus Sigura & Justine, 2008 and P. podocyanus Sigura & Justine, 2008, two species originally described from E. cyanopodus Richardson, P. stigmosus n. sp., P. exoticoides n. sp. and Diplectanum femineum n. sp. P. stigmosus is characterised by a sclerotised vagina with a straight primary canal, large ovoid primary chamber and spherical secondary chamber. P. exoticoides is a highly aberrant species, with a thick-walled male quadriloculate organ and a discoid sclerotised vagina with an exceptional structure. Interestingly, P. exoticoides resembles P. exoticus Sigura & Justine, 2008, a species from E. cyanopodus, and P. stigmosus resembles P. cyanopodus and P. podocyanus, also both from E. cyanopodus, suggesting close relationships between the diplectanid faunae of these two fish species. D. femineum belongs to a group of diplectanids, provisionally classified as ‘Diplectanum’ Diesing, 1858, which all share a small funnel-shaped male copulatory organ. In contrast to other members of this group which have no sclerotised vagina, D. femineum has a sclerotised vagina with the same organisation as those of species of Pseudorhabdosynochus Yamaguti, 1958. This suggests that the species of ‘Diplectanum’ from groupers are closer to Pseudorhabdosynochus than suggested by the structure of the male organs.


Male Copulatory Organ Outer Length Vitelline Field Primary Canal Marginal Hooklet 
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.


Les monogènes parasites des branchies d’Epinephelus chlorostigma (Val.), pêché en mer profonde à l’extérieur du récif corallien de Nouvelle-Calédonie, Pacifique Sud, comprennent sept espèces. Celles-ci sont l’Ancyrocephalidae Haliotrema sp., le Capsalidae Allobenedenia cf. epinepheli Yamaguti, 1968 et cinq Diplectanidae, Pseudorhabdosynochus epinepheli (Yamaguti, 1938), signalé dans un article précédent, P. cyanopodus Sigura & Justine, 2008 et P. podocyanus Sigura & Justine, 2008, deux espèces originellement décrites de E. cyanopodus Richardson, P. stigmosus n. sp., P. exoticoides n. sp. et Diplectanum femineum n. sp. P. stigmosus est caractérisé par un vagin sclérifié avec canal primaire droit, chambre primaire grande et ovoïde et chambre secondaire sphérique. P. exoticoides est une espèce aberrante, avec un organe mâle tétraloculé à paroi épaisse et un vagin sclérifié discoïde à structure exceptionnelle. De manière intéressante, P. exoticoides ressemble à P. exoticus Sigura & Justine, 2008, une espèce de E. cyanopodus, et P. stigmosus ressemble à P. cyanopodus et P. podocyanus, aussi deux espèces de E. cyanopodus, ce qui suggère des relations entre les faunes de Diplectanidae de ces deux poissons. D. femineum appartient à un groupe de Diplectanidae, classés provisoirement dans ‘Diplectanum’ Diesing, 1858, qui ont tous un petit organe copulateur mâle en forme d’entonnoir. À l’opposé des autres membres de ce groupe qui n’ont pas de vagin sclérifié, D. femineum a un vagin sclérifié de même structure que celui des Pseudorhabdosynochus Yamaguti, 1958. Cela suggère que les ‘Diplectanum’ des mérous sont plus proches des Pseudorhabdosynochus que ne pouvait le faire croire la structure des organes mâles.



Sophie Olivier and Charlotte Schoelinck, students, participated in the fishing operations and parasitological survey and skilfully helped in the preparation of slides. The identification of the hosts was kindly confirmed (from photographs) by John E. Randall (Bishop Museum, Hawaii).


  1. Beverley-Burton, M., & Suriano, D. M. (1981). A revision of Cycloplectanum Oliver, 1968 (Monogenea: Diplectanidae) and descriptions of C. hongkongensis n. sp. and C. lantauensis n. sp. from Epinephelus spp. (Serranidae) in the South China Sea. Canadian Journal of Zoology, 59, 1276–1285.CrossRefGoogle Scholar
  2. Bu, S. S. H., Leong, T. S., Wong, S. Y., Woo, Y. S. N., & Foo, R. W. T. (1999). Three diplectanid monogeneans from marine finfish (Epinephelus spp.) in the Far East. Journal of Helminthology, 73, 301–312.Google Scholar
  3. Chauvet, C. (2005). Closure of Dumbéa Pass introduced in New Caledonia protects the spawning site of several reef fish species. Society for the Conservation of Reef Fish Aggregations, Newsletter, number 8, December 2005, 9-11.Google Scholar
  4. Dang, B. T., Levsen, A., Schander, C., & Bristow, G. A. (2010). Some Haliotrema (Monogenea: Dactylogyridae) from cultured grouper (Epinephelus spp.) with emphasis on the phylogenetic position of Haliotrema cromileptis. Journal of Parasitology, 96, 30–39.CrossRefPubMedGoogle Scholar
  5. Hinsinger, D. D., & Justine, J.-L. (2006a). 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
  6. Hinsinger, D. D., & Justine, J.-L. (2006b). Pseudorhabdosynochus venus n. sp. (Monogenea: Diplectanidae) from Epinephelus howlandi (Perciformes: Serranidae) off New Caledonia. Systematic Parasitology, 63, 155–160.CrossRefPubMedGoogle Scholar
  7. Journo, C., & Justine, J.-L. (2006). Laticola dae n. sp (Monogenea: Diplectanidae) from Epinephelus maculatus (Perciformes: Serranidae) off New Caledonia. Systematic Parasitology, 64, 173–180.CrossRefPubMedGoogle Scholar
  8. Justine, J.-L. (2005a). 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
  9. Justine, J.-L. (2005b). Pseudorhabdosynochus hirundineus n. sp. (Monogenea: Diplectanidae) from Variola louti (Perciformes: Serranidae) off New Caledonia. Systematic Parasitology, 62, 39–45.CrossRefPubMedGoogle Scholar
  10. Justine, J.-L. (2007a). Parasite biodiversity in a coral reef fish: twelve species of monogeneans on the gills of the grouper Epinephelus maculatus (Perciformes: Serranidae) off New Caledonia, with a description of eight new species of Pseudorhabdosynochus (Monogenea: Diplectanidae). Systematic Parasitology, 66, 81–129.CrossRefPubMedGoogle Scholar
  11. Justine, J.-L. (2007b). Pseudorhabdosynochus argus n. sp. (Monogenea: Diplectanidae) from Cephalopholis argus, P. minutus n. sp. and Diplectanum nanus n. sp. from C. sonnerati and other monogeneans from Cephalopholis spp. (Perciformes: Serranidae) off Australia and New Caledonia. Systematic Parasitology, 68, 195–215.CrossRefPubMedGoogle Scholar
  12. Justine, J.-L. (2008a). Diplectanum parvus sp. nov. (Monogenea, Diplectanidae) from Cephalopholis urodeta (Perciformes, Serranidae) off New Caledonia. Acta Parasitologica, 53, 127–132.CrossRefGoogle Scholar
  13. Justine, J.-L. (2008b). Pseudorhabdosynochus inversus sp. nov. (Monogenea, Diplectanidae) from the halfmoon grouper Epinephelus rivulatus (Perciformes, Serranidae) off New Caledonia. Acta Parasitologica, 53, 339–343.CrossRefGoogle Scholar
  14. Justine, J.-L. (2008c). Two new species of Pseudorhabdosynochus Yamaguti, 1958 (Monogenea: Diplectanidae) from the deep-sea grouper Epinephelus morrhua (Val.) (Perciformes: Serranidae) off New Caledonia. Systematic Parasitology, 71, 145–158.CrossRefPubMedGoogle Scholar
  15. Justine, J.-L. (2009). A redescription of Pseudorhabdosynochus epinepheli (Yamaguti, 1938), the type-species of Pseudorhabdosynochus Yamaguti, 1958 (Monogenea, Diplectanidae), and the description of P. satyui n. sp. from Epinephelus akaara off Japan. Systematic Parasitology, 72, 27–55.CrossRefPubMedGoogle Scholar
  16. Justine, J.-L. (2010). Parasites of coral reef fish: how much do we know? With a bibliography of fish parasites in New Caledonia. Belgian Journal of Zoology, in press.Google Scholar
  17. Justine, J.-L., Beveridge, I., Boxshall, G. A., Bray, R. A., Moravec, F., Trilles, J.-P., & Whittington, I. (2010). An annotated list of parasites (Isopoda, Copepoda, Monogenea, Digenea, Cestoda and Nematoda) collected in groupers (Serranidae, Epinephelinae) in New Caledonia emphasizes parasite biodiversity in coral reef fish. Folia Parasitologica, in press.Google Scholar
  18. 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
  19. Justine, J.-L., & Euzet, L. (2006). Diplectanids (Monogenea) parasitic on the gills of the coralgroupers Plectropomus laevis and P. leopardus (Perciformes, Serranidae) off New Caledonia, with the description of five new species and the erection of Echinoplectanum n. g. Systematic Parasitology, 64, 147–172.CrossRefPubMedGoogle Scholar
  20. Justine, J.-L., & Sigura, A. (2007). Monogeneans of the malabar grouper Epinephelus malabaricus (Perciformes, Serranidae) off New Caledonia, with a description of six new species of Pseudorhabdosynochus (Monogenea: Diplectanidae). Zootaxa, 1543, 1–44.Google Scholar
  21. Justine, J.-L., & Vignon, M. (2009). Monogeneans of the grouper Epinephelus tauvina (Perciformes, Serranidae) off Moorea, French Polynesia, with a description of Pseudorhabdosynochus pai n.sp. (Monogenea: Diplectanidae). Systematic Parasitology, 72, 113–125.CrossRefPubMedGoogle Scholar
  22. Laboute, P., & Grandperrin, R. (2000). Poissons de Nouvelle-Calédonie. Nouméa, New Caledonia: Éditions Catherine Ledru, 520 pp.Google Scholar
  23. Paperna, I. (1972). Monogenea of Red Sea Fishes. III. Dactylogyridae from littoral and reef fishes. Journal of Helminthology, 46, 47–62.PubMedGoogle Scholar
  24. Sigura, A., Chauvet, C., & Justine, J.-L. (2007). Pseudorhabdosynochus bacchus sp. nov. (Monogenea, Diplectanidae) from Epinephelus coeruleopunctatus (Perciformes, Serranidae) off New Caledonia. Acta Parasitologica, 52, 196–200.CrossRefGoogle Scholar
  25. 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
  26. Yang, T. B., Kritsky, D. C., Sun, Y., Zhang, J. Y., Shi, S. H., & Agrawal, N. (2006). Diplectanids infesting the gills of the barramundi Lates calcarifer (Bloch) (Perciformes: Centropomidae), with the proposal of Laticola n. g. (Monogenoidea: Diplectanidae). Systematic Parasitology, 63, 127–141.Google Scholar
  27. Young, P. C. (1968). Ten new species of Haliotrema Johnston and Tiegs, 1922 (Monogenoidea: Dactylogyridae) from Australian fishes and a revision of the genus. Journal of Zoology, London, 154, 41–75.CrossRefGoogle Scholar
  28. Young, P. C. (1969). Some monogenoideans of the family Diplectanidae Bychowsky, 1957 from Australian teleost fish. Journal of Helminthology, 43, 223–254.CrossRefPubMedGoogle Scholar
  29. Zeng, B., & Yang, T. (2007). Description of Pseudorhabdosynochus justinei n. sp. (Monogenea: Diplectanidae) and redescription of P. vagampullum (Young, 1969) Kritsky & Beverley-Burton, 1986 from the gills of the longfin grouper Epinephelus quoyanus (Valenciennes) (Perciformes: Serranidae) in Dapeng Bay, South China Sea. Systematic Parasitology, 66, 223–225.CrossRefPubMedGoogle Scholar
  30. Zhang, J. Y., Yang, T. B., & Liu, L. (2001). [Monogeneans of Chinese marine fishes]. Beijing: Agriculture Press, 400 pp. (In Chinese.).Google Scholar

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© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  1. 1.UMR 7138 Systématique, Adaptation, ÉvolutionMuséum National d’Histoire NaturelleParis Cedex 05France
  2. 2.Aquarium des LagonsNouméaNouvelle-Calédonie

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