Folia Parasitologica, vol. 60 (2013), issue 2

Folia Parasitologica 60[2] 105-122 (2013) | 10.14411/fp.2013.012

Gonad-infecting philometrids (Nematoda: Philometridae) including four new species from marine fishes off the eastern coast of India

František Moravec1, Jayaraman Manoharan2
1 Institute of Parasitology, Biology Centre of the Academy of Sciences of the Czech Republic, České Budějovice, Czech Republic;
2 Faculty of Marine Sciences, Annamalai University, Tamil Nadu, India

Abstract: Based on light and scanning electron microscopical studies, the following five gonad-infecting species of the Philometridae (Nematoda: Dracunculoidea) are described from marine perciform fishes off the eastern coast of India (Bay of Bengal): Philometra sphyraenae sp. n. (males and females) from the pickhandle barracuda Sphyraena jello Cuvier (Sphyraenidae), Philometra gerrei sp. n. (males and females) from the whipfin silver-biddy Gerres filamentosus Cuvier (Gerreidae), Philometra otolithi sp. n. (single female) from the tigertooth croaker Otolithes ruber (Bloch et Schneider) (Sciaenidae), Philometra sp. (females) from the Belanger's croaker Johnius belangerii (Cuvier) (Sciaenidae), and Philometroides eleutheronemae sp. n. (females) from the fourfinger threadfin Eleutheronema tetradactylum (Shaw) (Polynemidae). All new species are distinguished from their congeners parasitizing gonads of marine fishes by morphological (mainly the gubernaculum structure in males and the shape and structure of the cephalic and caudal ends and of the oesophagus in females) and biometrical features. Philometra rajani Mukherjee, 1963 is considered a species inquirenda.

Keywords: Dracunculoidea, Bay of Bengal, marine fishes, fish parasites, hosts, parasitic nematode, taxonomy

Received: November 16, 2012; Accepted: January 11, 2013; Published: May 10, 2013


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