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Systematic Parasitology

, 72:113 | Cite as

Monogeneans of the grouper Epinephelus tauvina (Perciformes, Serranidae) off Moorea, French Polynesia, with a description of Pseudorhabdosynochus pai n. sp. (Monogenea: Diplectanidae)

  • Jean-Lou Justine
  • Matthias Vignon
Article

Abstract

Specimens of the greasy grouper Epinephelus tauvina (Forsskål), caught off Moorea, French Polynesia, harboured four species of gill monogeneans. The diplectanid Pseudorhabdosynochus pai n. sp. is characterised by an extremely big male quadriloculate organ (inner length 77 μm, cone length 15, tube length 47), the largest of all members of the genus, and a sclerotised vagina with a very complex structure, including three secondary chambers instead of one as in most species. Pseudorhabdosynochus sp. is a species of the ‘cupatus group’; this species is not formally described but various measurements are provided. The ancyrocephalid Haliotrema sp. and the capsalid Benedenia sp. were rare; they are both mentioned but not described. The diplectanid fauna of E. tauvina corresponds to the pattern already found in a clade of grouper species, the members of which often harbour both a species of the ‘cupatus group’ and another species of Pseudorhabdosynochus Yamaguti, 1958.

Keywords

Picrate Male Copulatory Organ United States National Parasite Collection Vitelline Field Primary Canal 
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.

Résumé

Des spécimens du mérou Epinephelus tauvina (Forsskål) pêchés à Moorea, Polynésie Française, hébergeaient quatre espèces de monogènes sur les branchies. Le Diplectanidae Pseudorhabdosynochus pai n. sp. est caractérisé par un organe tétraloculé mâle de très grande taille (longueur interne 77 μm, longueur du cône 15, longueur du tube 47), le plus grand de toutes les espèces du genre, et un vagin sclérifié à structure très complexe, comprenant trois chambres secondaires, au lieu d’une comme c’est le cas chez la plupart des autres espèces. Pseudorhabdosynochus sp. est une espèce du ‘groupe cupatus’ qui n’est pas formellement décrite, mais des mesures sont indiquées. Un Ancyrocephalidae, Haliotrema sp., et un Capsalidae, Benedenia sp., étaient rares, et sont mentionnés mais non décrits. La faune des Diplectanidae de E. tauvina correspond au patron déjà trouvé dans un clade d’espèces de mérous, dont les membres hébergent souvent à la fois une espèce du ‘groupe cupatus’ et une autre espèce de Pseudorhabdosynochus Yamaguti, 1958.

Notes

Acknowledgements

Cyndie Dupoux, a student, skilfully prepared most of the slides used in this study. We are grateful to P. Ung for field assistance in Polynesia. CRIOBE facilities (UMR2978 CNRS EPHE) were used during this field expedition.

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Copyright information

© Springer Science+Business Media B.V. 2008

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
  2. 2.Laboratoire Biologie et Écologie Tropicale et MéditerranéenneUMR 5244 CNRS-EPHE-UPDV, Université de PerpignanPerpignan CedexFrance

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