Systematic Parasitology

, 66:223 | Cite as

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

  • Bijian Zeng
  • Tingbao Yang


Pseudorhabdosynochus justinei n. sp. is reported and described from the gills of the longfin grouper Epinephelus quoyanus in Dapeng␣Bay, South China Sea off the town of Nan’ao, Shenzhen, Guangdong Province, China. P. justinei n. sp. is characterised by the presence of a male copulatory organ (MCO) composed of a moderately quadriloculate organ, a short cone and a long, variable internal tube, and a sclerotised vagina comprising anterior ‘trumpet’ with a characteristic sclerotised ring, slightly medially curved canal, heavily sclerotised principal chamber and star-shaped lateral structure with accessory chambers. It is differentiated from the most similar species, P. caledonicus Justine, 2005, by the absence of a thinly sclerotised posterior tube of the MCO and by the size and morphology of the sclerotised vagina. P. vagampullum (Young, 1969) is redescribed based on specimens collected from the same species of host and locality as P. justinei n. sp. In comparison with the original description by Young [Young, P. C. (1969). Journal of Helminthology, 43, 223–254] and the redescription by Justine [Justine, J.-L. (2005a). Systematic Parasitology, 62, 1–37; (2005b). Systematic Parasitology, 62, 39–45] based on old museum material, the new specimens of P. vagampullum clearly showed the internal anatomy of the terminal genitalia, especially the sclerotised vagina, consisting of a distal, cylindrical canal with an anterior ‘trumpet’ continuing as an unsclerotised, curved, bulb-shaped vaginal pore, a conical principal chamber and a star-shaped lateral structure with an accessory chambers leading to the seminal receptacle via a fine, unsclerotised duct.


Seminal Receptacle Male Copulatory Organ Systematic Parasitology Outer Length Terminal Genitalia 
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.



The authors would like to thank the following international colleagues for their help with different aspects of the work: Prof. Jean-Lou Justine of IRD New Caledonia for valuable comments on an early version of the manuscript and for providing manuscripts in press; Dr David I. Gibson of the Natural History Museum, London, for his comments and corrections of the English; Prof. Zhang Jianying in South China Normal University for providing literature; Prof. Susan Lim of the University for Malaya for help with the fixation and staining methods; Dr John E. Randall of the Bishop Museum, Hawaii for the host identification; and Dr Yang Hongzhi of the Fishery Institute of Longgang District, Shenzhen, Guangdong Province for providing experimental facilities. Financial support was provided by grants from the National Natural Science Fund (No. 30370242), the National 863 Science and Technology Project (No. 2001AA621010) and the National Science Fund of Guangdong Province (No. 2002C20312).


  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. Heemstra, P. C., & Randall, J. E. (1993). FAO species catalogue. Vol. 16. Groupers of the world (Family Serranidae, Subfamily Epinephelinae). An annotated and illustrated catalogue of the grouper, rockcod, hind, coral grouper and lyretail species known to date. Rome: FAO. FAO Fisheries Synopsis, No. 125, 393.Google Scholar
  4. Hinsinger, D. D., & Justine, J.-L. (2006). The ‘Pseudorhabdosynochus cupatus group’ (Monogenea: Diplectanidae) in 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.Google Scholar
  5. Humason, G. L. (1979). Animal tissue techniques. (4th Ed.). San Francisco: W.H. Freeman and Company, 661 p.Google Scholar
  6. 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 Indo-Pacific Ocean, with a comparison of measurements of speciemens prepared using different methods, and a description of P. caledonicus n. sp. Systematic Parasitology, 62, 1–37.CrossRefGoogle Scholar
  7. Justine, J.-L. (2005b). Pseudorhabdosynochus hirundineus n. sp. (Monogenea: Diplectanidae) from Variola louti (Perciformes: Serranidae) off New Caledonia. Systematic Parasitology, 62, 39–45.CrossRefGoogle Scholar
  8. Justine, J.-L. (2007). 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, in press.Google Scholar
  9. Kritsky, D. C., & Beverley-Burton, M. (1986). The status of Pseudorhabdosynchus Yamaguti, 1958, and Cycloplectanum Oliver, 1968 (Monogenea: Diplectanidae). Proceedings of the Biological Society of Washington, 99, 17–20.Google Scholar
  10. Kritsky, D. C., Hoberg E. P., & Aubry K. B. (1993). Lagarocotyle salamandrae n. gen., n. sp. (Monogenoidea, Polyonchoinea, Lagarocotylidea n. ord.) from the cloaca of Rhyacotriton cascadae Good and Wake (Caudata, Rhyacotritonidae) in Washington State. Journal of Parasitology, 79, 322–330.Google Scholar
  11. Laird, M. (1958). Parasites of South Pacific fishes. II. Diplectanum melanesiensis n. sp., a monogenetic trematode from Fuji and the New Hebrides. Canadian Journal of Zoology, 36, 167–173.Google Scholar
  12. Oliver, G. (1968). Recherches sur les Diplectanidae (Monogenea) parasites de téléostéens du Golfe du Lion. I. Diplectaninae Monticelli 1903. Vie et Milieu, 19, 95–138.Google Scholar
  13. Oliver, G. (1986). Cycloplectanum riouxi n. sp., une nouvelle espèce de Diplectanidae (Monogenea, Monopisthocotylea) parasite d’Epinephelus guaza (Linnaeus, 1758) (Pisces, Serranidae). Systematic Parasitology, 8, 317–322.CrossRefGoogle Scholar
  14. Plaisance, L., Bouamer, S., & Morand, S. (2004). Description and redescription of Haliotrema species (Monogenoidea: Polyonchoinea: Dactylogyridae) parasitizing butterfly fishes (Teleostei: Chaetodontidae) in the Indo-West Pacific Ocean. Parasitology Research, 93, 72–78.PubMedCrossRefGoogle Scholar
  15. Santos, C. P., Buchmann, K., & Gibson, D. I. (2000). Pseudorhabdosynochus spp. (Monogenea: Diplectanidae) from the gills of Epinephelus spp. in Brazilian waters. Systematic Parasitology, 45, 145–153.PubMedCrossRefGoogle Scholar
  16. Vidal-Martinez, V. M., Aguirre-Macedo, L., & Mendoza-Franco, E. F. (1997). Pseudorhabdosynochus yucatanensis sp. n. (Monogenea: Diplectanidae) from the gills of the red grouper Epinephelus morio (Pisces: Serranidae) of the Yucatan Peninsula, Mexico. Folia Parasitologica, 44, 274–278.PubMedGoogle Scholar
  17. Yamaguti, S. (1958). Studies on the helminth fauna of Japan. Part 53. Trematodes of fishes. XII. Publications of the Seto Marine Laboratory, 5, 53–88.Google Scholar
  18. Yang, T. B., Zeng, B. J., & Gibson, D. I. (2005). Description of Pseudorhabdosynochus shenzhenensis sp. n. (Monogenea: Diplectanidae) and redescription of P. serrani (Yamaguti, 1953) from Epinephelus coioides (Hamilton) off Dapeng Bay, Shenzhen, China. Journal of Parasitology, 91, 808–813.CrossRefGoogle Scholar
  19. Yang, T. B., Gibson, D. I., & Zeng, B. J. (2005) Pseudorhabdosynochus summanoides n. sp. (Monogenea: Dipelctanidae) from Epinephelus coioides in Dapeng Bay, South China Sea, with observations on several similar species of Pseudorhabdosynochus Yamaguti, 1958. Systematic Parasitology, 62, 221–239.CrossRefGoogle Scholar
  20. Yang, T.B., Kritsky, D.C., Sun, Y., Zhang, J.Y., Shi, S.H., & Agrawal, N. (2006). Diplectanids infesting the gills of Barramundi, Lates calcarifer (Perciformes: Centropomidae), with proposal of Laticola n. gen. (Monogenoidea: Diplectanidae). Systematic Parasitology, 63, 127–141.Google Scholar
  21. Young, P. C. (1968). Ten new species of Haliotrema (Monogenoidea: Dactylogyridae) from Australian fish and a revision of the genus. Journal of Zoology, London, 154, 41–75.CrossRefGoogle Scholar
  22. Young, P. C. (1969). Some monogenoideans of the family Diplectanidae Bychowsky, 1957 from Australian teleost fishes. Journal of Helminthology, 43, 223–254.PubMedGoogle Scholar
  23. Zhang, J.Y., Yang, T.B., & Liu, L. (2001). Monogeneans of Chinese marine fishes. Beijing: Agriculture Press. (In Chinese).Google Scholar
  24. Zhang, J. Y., Yang, T. B., Liu, L., & Ding, X. J. (2003). A list of monogeneans from Chinese marine fishes. Systematic Parasitology, 54, 111–130.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media B.V. 2006

Authors and Affiliations

  1. 1.Center for Parasitic Organisms and Key Laboratory of Biocontrol, School of Life Sciences, Zhongshan UniversityGuangzhouChina

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