Folia Parasitologica, vol. 54 (2007), issue 4

Folia Parasitologica 54[4] 293-300 (2007) | 10.14411/fp.2007.038

Redescription of Metabronema magnum (Nematoda: Cystidicolidae), a swimbladder parasite of the carangid fish Gnathanodon speciosus off New Caledonia

Franti¹ek Moravec1, Jean-Lou Justine2
1 Institute of Parasitology, Biology Centre, Academy of Sciences of the Czech Republic, Brani¹ovská 31, 370 05 Èeské Budìjovice, Czech Republic
2 Équipe Biogéographie Marine Tropicale, Unité Systématique, Adaptation, Évolution (UPMC, CNRS, MNHN, IRD), Institut de Recherche pour le Développement, BP A5, 98848 Nouméa Cedex, New Caledonia

The cystidicolid nematode Metabronema magnum (Taylor, 1925) is redescribed from specimens collected from the swimbladder of the fish (golden trevally) Gnathanodon speciosus (Forsskål) (Carangidae, Perciformes) off New Caledonia, South Pacific (a new geographical record). The light and scanning electron microscopical examination made it possible to study in detail the morphology of this so far little-known species. Its pseudolabia were found to possess distinct anterior protrusions (protuberances), sublabia are absent, only four cephalic papillae are present, deirids are bifurcated, and the male possesses six pairs of postanal papillae. By its morphology, M. magnum seems to be most similar to species of Salvelinema Trofimenko, 1962, also from the swimbladder of fishes, differing from them mainly in the presence of median wedge-shaped outgrowths in the mouth, lateral alae, the longer spicule on the right side, and a fewer number of pairs of preanal papillae in the male. Since the morphology of M. magnum considerably differs from that of other representatives of the Cystidicolidae, Metabronema in Rasheed's (1966) conception is considered a valid genus.

Keywords: parasitic nematode, Metabronema, morphology, marine fish, Gnathanodon, New Caledonia

Received: February 7, 2007; Accepted: May 3, 2007; Published: December 1, 2007


References

  1. APPY R.G. 1981: Species of Ascarophis van Beneden, 1870 (Nematoda: Cystidicolidae) in North Atlantic fishes. Can. J. Zool. 59: 2193-2205 Go to original source...
  2. ARTHUR J.R., LUMANLAN-MAYO S. 1997: Checklist of the Parasites of Fishes of the Philippines. FAO Fish. Tech. Paper. No. 369. FAO, Rome, 102 pp
  3. BAYLIS H.A. 1934: Three helminthological notes. Ann. Mag. Nat. Hist., Ser. 10, 14: 115-121 Go to original source...
  4. CHITWOOD B.G., WEHR E.E. 1934: The value of cephalic structures as characters in nematode classification, with special reference to the superfamily Spiruroidea. Z. Parasitenkd. 7: 273-335 Go to original source...
  5. CRITES J.L., OVERSTREET R.M., MAUNG M. 1993: Ctenascarophis lesteri n. sp. and Prospinitectus exiguus n. sp. (Nematoda: Cystidicolidae) from the skipjack tuna, Katsuwonus pelamis. J. Parasitol. 79: 847-859 Go to original source... Go to PubMed...
  6. FERRER E., AZNAR F.J., BALBUENA J.A., KOSTADINOVA A., RAGA J.A., MORAVEC F. 2005: A new cystidicolid nematode from Mullus surmuletus (Perciformes: Mullidae) from the western Mediterranean. J. Parasitol. 91: 335-344 Go to original source... Go to PubMed...
  7. FRANTOVA D., MORAVEC F. 2003: Ultrastructure of the body wall of Cystidicoloides ephemeridarum (Nematoda, Cystidicolidae) in relation to the histopathology of this nematode in salmonids. Parasitol. Res. 91: 100-108 Go to original source... Go to PubMed...
  8. FROESE R., PAULY D. (Eds.) 2007: FishBase. World Wide Web electronic publication, www.fishbase.org, version 01/2007
  9. KATAITSEVA T.V. 1979: [A new species of nematode of the genus Metabronema (Nematoda, Spirurata) from the stomach of fish of the Philippine Sea.] Tr. Uzb. Nauchno-Issled. Vet. Inst. 29: 59-61. (In Russian.)
  10. KO R.C. 1986: A Preliminary Review of the Genus Ascarophis van Beneden, 1871 (Nematoda: Cystidicolidae) of the Gastrointestinal Tract of Fishes. Occas. Publ., Department of Zoology, University of Hong Kong, 54 p
  11. KO R.C., MARGOLIS L., MACHIDA M. 1985: Pseudascarophis kyphosi n. gen., n. sp. (Nematoda: Cystidicolidae) from the stomach of the fish Kyphosus cinerascens (Forskal) [sic] from Japan. Can. J. Zool. 63: 2684-2688 Go to original source...
  12. MARGOLIS L. 1977: Caballeronema gen. nov. for Metabronema wardlei Smedley, 1934 (Nematoda, Spiruroidea) from the marine fish Scorpaenichthys marmoratus from the Pacific coast of Canada. Excerta Parasitologica en memoria del doctor Eduardo Caballero y Caballero, Instituto de Biologia, Universidad Nacional Autonoma de Mexico, Publicaciones especiales 4, pp. 447-454 Go to PubMed...
  13. MAWSON P.M. 1957: Some nematodes from fish from Heron Island, Queensland. Trans. R. Soc. S. Australia 80: 177-179
  14. MORAVEC F., GONZALEZ-SOLIS D. 2007: Structure of the cephalic end of Ascarophis mexicana (Nematoda: Cystidicolidae), as revealed by SEM. Folia Parasitol. 54: 155-156 Go to original source... Go to PubMed...
  15. MORAVEC F., HANZELOVA V., GERDEAUX D. 2007: New data on the morphology of Comephoronema oschmarini (Nematoda: Cystidicolidae), a little-known gastrointestinal parasite of Lota lota (Teleostei) in Palaearctic Eurasia. Acta Parasitol. 52: 135-141 Go to original source...
  16. MORAVEC F., KLIMPEL S. 2007: A new species of Comephoronema (Nematoda: Cystidicolidae) from the stomach of the abyssal halosaur Halosauropsis macrochir (Teleostei) from the Mid-Atlantic Ridge. J. Parasitol. 93: 901-906 Go to original source... Go to PubMed...
  17. MORAVEC F., KLIMPEL S., KARA E. 2006: Neoascarophis macrouri n. sp. (Nematoda: Cystidicolidae) from the stomach of Macrourus berglax (Macrouridae) in the eastern Greenland Sea. Syst. Parasitol. 63: 231-237 Go to original source... Go to PubMed...
  18. MORAVEC F., NAGASAWA K. 1999: Morphology and taxonomy of Salvelinema species (Nematoda: Cystidicolidae), swimbladder parasites of Pacific area salmonids. Folia Parasitol. 46: 123-131
  19. MORAVEC F., ROKICKI J. 2002: Some new data on the morphology of Cystidicola farionis (Nematoda, Cystidicolidae), a swimbladder parasite of salmonids, as revealed by SEM. Acta Parasitol. 47: 29-33
  20. PARUKHIN A.M. 1975: [On distribution in the World Ocean of Nematoda found in fish from the southern seas.] Vest. Zool. 1: 33-38. (In Russian, Engl. summary.)
  21. RASHEED S. 1966: Observations on the spiruroid nematodes of fish with a revision of the genus Metabronema Yorke and Maplestone, 1926. Z. Zool. Syst. Evolutionsforsch. 3: 359- 387 Go to original source...
  22. TAYLOR E.L. 1925: Notes on some nematodes in the Museum of the Liverpool School of Tropical Medicine. II. Ann. Trop. Med. Parasitol. 19: 557-569 Go to original source...
  23. TUBANGUI M.A., MASILUNGAN V.A. 1938: Nematodes in the collection of the Philippine Bureau of Science, III. Philippine J. Sci. 64 (Year 1937): 257-267
  24. YORKE W., MAPLESTONE P.A. 1926: The Nematode Parasites of Vertebrates. J. & A. Churchill, London, 536 pp