Most cited article - PubMed ID 17436959
Two new species of parasitic nematodes from the dogtooth tuna Gymnosarda unicolor (Pisces) off the Maldive Islands
Parasitological examination of marine perciform fishes belonging to four species of Carangoides, i.e. C. chrysophrys, C. dinema, C. fulvoguttatus and C. hedlandensis (Carangidae), from off New Caledonia revealed the presence of nematodes. The identification of carangids was confirmed by barcoding of the COI gene. The eight nematode species found were: Capillariidae gen. sp. (females), Cucullanus bulbosus (Lane, 1916) (male and females), Hysterothylacium sp. third-stage larvae, Raphidascaris (Ichthyascaris) sp. (female and larvae), Terranova sp. third-stage larvae, Philometra dispar n. sp. (male), Camallanus carangis Olsen, 1954 (females) and Johnstonmawsonia sp. (female). The new species P. dispar from the abdominal cavity of C. dinema is mainly characterised by the body length (5.14 mm), the lengths of markedly unequal spicules (163 and 96 μm) and gubernaculum (102 μm long) provided with a dorsal protuberance and a small, reflexed dorsal barb on its posterior portion. The finding of C. bulbosus represents the first record of this parasite a century after its discovery; the first study of this species by scanning electron microscopy (SEM) enabled detailed redescription. The finding of Johnstonmawsonia sp. in C. fulvoguttatus is the first record of a rhabdochonid nematode from a host belonging to the Carangidae family. Johnstonmawsonia africana Moravec & Puylaert, 1970 and J. campanae Puylaert, 1973 are transferred to Prosungulonema Roytman, 1963 as P. africanum (Moravec & Puylaert, 1970) comb. n. and P. campanae (Puylaert, 1973) n. comb.
L’examen parasitologique de poissons perciformes marins appartenant à quatre espèces de Carangoides, C. chrysophrys, C. dinema, C. fulvoguttatus et C. hedlandensis (Carangidae) de Nouvelle-Calédonie a révélé la présence de nématodes. L’identification des carangidés a été confirmée par barcoding du gène COI. Les huit espèces de nématodes trouvées étaient: Capillariidae gen. sp. (femelles), Cucullanus bulbosus (Lane, 1916) (mâles et femelles), Hysterothylacium sp. (larves de troisième stade), Raphidascaris (Ichthyascaris) sp. (femelles et larves), Terranova sp. (larves de troisième stade), Philometra dispar n. sp. (mâle), Camallanus carangis Olsen, 1954 (femelles) et Johnstonmawsonia sp. (femelle). La nouvelle espèce P. dispar, de la cavité abdominale de C. dinema, se caractérise principalement par la longueur du corps (5.14 mm), les longueurs des spicules sensiblement inégales (163 et 96 μm) et un gubernaculum (102 μm de long) montrant une protubérance dorsale et un petit ardillon dorsal orienté vers l’arrière sur sa partie postérieure. La trouvaille de C. bulbosus représente la première mention de ce parasite, un siècle après sa découverte; la première étude de cette espèce par MEB a permis une redescription détaillée de l’espèce. La découverte de Johnstonmawsonia sp. chez C. fulvoguttatus est la première mention d’un nématode Rhabdochonidae chez un hôte appartenant à la famille Carangidae. Johnstonmawsonia africana Moravec & Puylaert, 1970 et J. campanae Puylaert, 1973 sont transférés vers Prosungulonema Roytman, 1963 comme P. africanum (Moravec & Puylaert, 1970) n. comb. et P. campanae (Puylaert, 1973) n. comb.
- MeSH
- Ascaridoidea classification isolation & purification ultrastructure MeSH
- Dracunculoidea classification isolation & purification ultrastructure MeSH
- Nematoda classification genetics isolation & purification ultrastructure MeSH
- Microscopy, Electron, Scanning veterinary MeSH
- Nematode Infections epidemiology parasitology veterinary MeSH
- Fish Diseases epidemiology parasitology MeSH
- Fishes MeSH
- Spiruroidea classification isolation & purification ultrastructure MeSH
- Animals MeSH
- Check Tag
- Male MeSH
- Female MeSH
- Animals MeSH
- Publication type
- Journal Article MeSH
- Geographicals
- New Caledonia epidemiology MeSH
Two species of Philometra Costa, 1845 (Nematoda: Philometridae), were, for the first time, recorded from fishes of the family Sparidae (porgies) from the Tyrrhenian Sea off Sicily, Italy: Philometra obladae sp. n. from the body cavity of the saddled seabream Oblada melanura (Linnaeus) and Philometra filiformis (Stossich, Boll Soc Adriat Sci Nat 17:121-136, 1896) from the gonads of the common pandora Pagellus erythrinus (Linnaeus). The new species (a single gravid female available) is characterised mainly by a large body (335 mm long, 3.4 mm wide), minute cephalic papillae (14 in number) arranged in two circles, a relatively short (1.29 mm) oesophagus with a distinct anterior inflation, a rounded caudal end without any projections and the length of larvae (549-600 mum) from the uterus. A key to species of Philometra with females located in the body cavity of marine and brackish-water fishes is given. Some new data on the female morphology of a little-known gonad-infecting species P. filiformis are provided; new observations revealed, for the first time in this species, the presence of lateral cephalic papillae and the absence of previously reported black intestinal corpuscles in the larvae.
- MeSH
- Dracunculoidea anatomy & histology classification isolation & purification ultrastructure MeSH
- Species Specificity MeSH
- Spirurida Infections parasitology veterinary MeSH
- Microscopy, Electron, Scanning MeSH
- Microscopy MeSH
- Fish Diseases parasitology MeSH
- Perciformes parasitology MeSH
- Animals MeSH
- Check Tag
- Female MeSH
- Animals MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Geographicals
- Italy MeSH
Marine fishes were collected from off the Maldive Islands in March, 2005. From amongst the material collected, the nematode Cucullanus maldivensis n. sp. is described from the intestine of a lutjanid fish, the black and white snapper Macolor niger (Forsskål). This species is morphologically and biometrically most similar to C. bourdini Petter & Le Bel, 1992, differing from it principally in the protruding vulval lips, the location of the first pair of pre-anal papillae, the absence of an elevated cloacal region, and having distinctly larger eggs (51-57 x 33-36 microm). Additionally, adult females of the nematodes Procamallanus (Spirocamallanus) sp. and Camallanus sp. from the green jobfish Aprion virescens Valenciennes (Lutjanidae) and the rainbow runner Elegatis bipinnulata (Quoy & Gaimard) (Carangidae), respectively, were collected. These camallanids are illustrated and measurements are provided, but they were not identified or described in detail as no males were collected.
