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

Folia Parasitologica 55[3] 219-223 (2008) | DOI: 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


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