Folia Parasitologica, vol. 55 (2008), issue 3

Folia Parasitologica 55[3] 219-223 (2008) | 10.14411/fp.2008.029

Redescription of the gonad-infecting nematode Philometra saltatrix Ramachandran, 1973 (Philometridae) based on specimens from the type host Pomatomus saltatrix (L.) (Osteichthyes) from the Tuscan Sea, Italy

František Moravec1, Marta Magi2, Fabio Macchioni2
1 Institute of Parasitology, Biology Centre of the Academy of Sciences of the Czech Republic, Branišovská 31, 370 05 České Budějovice, Czech Republic
2 Dipartimento di Patologia Animale, Profilassi ed Igiene degli Alimenti, Università di Pisa, Viale delle Piagge 2, 56124 Pisa, Italy

The philometrid nematode, Philometra saltatrix Ramachandran, 1973, is redescribed from male and female specimens collected from the ovaries of the marine fish (bluefish) Pomatomus saltatrix (L.) (Pomatomidae, Perciformes) from the Tuscan Sea, Italy. The light and scanning electron microscopical examination made it possible to study in detail the morphology of this so far little known species. For the first time, the actual structure of the male cephalic and caudal ends is described. The male possesses 14 small cephalic papillae arranged in two circles, the spicules are 84-111 µm long and the gubernaculum, 75-84 µm long, has its distal portion provided with dorsal transverse lamella-like structures. The caudal end of subgravid females bears two very small, hardly visible lateral papilla-like projections. This is the first record of P. saltatrix, a species originally described from the West Atlantic, from the Tuscan Sea and the second one in the Mediterranean region.

Keywords: Philometra, parasitic nematode, gonads, marine fish, Pomatomus, Italy

Received: March 21, 2008; Accepted: April 25, 2008; Published: September 1, 2008


References

  1. CHEUNG P.J., NIGRELLI R.F., RUGGIERI G.D. 1984: Philometra saltatrix infecting the heart of the 0-class bluefish, Pomatomus saltatrix (L.), from the New York coast. In: S.F. Snieszko commemoration fish disease workshop. Joint Workshop of Fish Health Section, AFS, and Midwest Disease Group, Little Rock, AR, p. 27
  2. CLARKE L.M., DOVE A.D.M., CONOVER D.O. 2006: Prevalence, intensity, and effect of a nematode (Philometra saltatrix) in the ovaries of bluefish (Pomatomus saltatrix). Fish. Bull. 104: 118-124
  3. FROESE R., PAULY D. (Eds.) 2008: FishBase. World Wide Web electronic publication, www.fishbase.org, 03/2008
  4. HINE P.M., ANDERSON C.D. 1982: Diseases of the gonads and kidneys of New Zealand snapper, Chrysophrys auratus Forster (F. Sparidae). In: M.E. Fowler (Ed.), Wildlife Diseases of the Pacific Basin and Other Countries. Academic Press, London, pp. 166-170
  5. LINTON E. 1901: Parasites of fishes of the Woods Hole Region. Bull. U.S. Fish. Comm. 1899: 441-481
  6. LINTON E. 1905: Parasites of fishes of Beauforty North Carolina. Bull. Bur. Fisher. (1904), 24: 321-428
  7. MORAVEC F. 2004: Some aspects of the taxonomy and biology of dracunculoid nematodes parasitic in fishes: a review. Folia Parasitol. 51: 1-13 Go to original source... Go to PubMed...
  8. MORAVEC F. 2006: Dracunculoid and Anguillicoloid Nematodes Parasitic in Vertebrates. Academia, Prague, 634 pp
  9. MORAVEC F. 2008: Systematic status of Philometra jordanoi (Lopez-Neyra, 1951) and some other congeneric species previously identified as Philometra lateolabracis (Yamaguti, 1935) (Nematoda: Philometridae). Folia Parasitol. 55: 159- 160 Go to original source...
  10. MORAVEC F., DE BURON I., BAKER T.G., GONZALEZ-SOLIS D. 2008: Some gonad-infecting species of Philometra (Nematoda: Philometridae) from offshore fishes of South Carolina and Georgia, USA, including Philometra charlestonensis sp. n. from the scamp Mycteroperca phenax. Acta Parasitol. (In press.)
  11. MORAVEC F., GENC E. 2004: Redescription of three Philometra spp. (Nematoda, Philometridae) from the gonads of marine perciform fishes of Iskenderun Bay (North-East Mediterranean), Turkey. Acta Parasitol. 49: 31-40
  12. MORAVEC F., SALGADO-MALDONADO G. 2007: A new species of Philometra (Nematoda, Philometridae) from the gonads of the rock hind Epinephelus adscensionis (Osteichthyes) from the southern Gulf of Mexico. Acta Parasitol. 52: 376-381 Go to original source...
  13. QUIAZON K.M.A., YOSHINAGA T., OGAWA K. 2008: Taxonomical study into two new species of Philometra (Nematoda: Philometridae) previously identified as Philometra lateolabracis (Yamaguti, 1935). Folia Parasitol. 55: 29-41 Go to original source... Go to PubMed...
  14. RAMACHANDRAN P. 1973: Philometra saltatrix sp. n., infecting the gonads of the common bluefish Pomatomus saltatrix (L.) of the New England Coast of the United States. Zool. Anz. 191: 325-328
  15. RAMACHANDRAN P. 1975: Philometra cephalus sp. n. infecting the gonads of the striped mullet, Mugil cephalus L. from the Arabian coast of Kerala, India, with a note on its pathology. Zool. Anz. 194: 140-144
  16. RASHEED S. 1963: A revision of the genus Philometra Costa, 1845. J. Helminthol. 37: 89-130 Go to original source... Go to PubMed...
  17. SAKAGUCHI S., YAMAGATA Y., SAKO H. 1987: Reidentification of Philometra parasitic on the Red Sea bream. Bull. Nat. Res. Inst. Aquacult., No. 12, 69-72. (In Japanese, English summary.)
  18. WALTON A.C. 1928: A revision of the nematodes of the Leidy collections. Proc. Acad. Nat. Sci. Philadelphia 79: 49-163 + Plts. 4-10