title: A new species of Cucullanus (Nematoda: Cucullanidae) parasitizing Conger orbignianus (Pisces: Congridae) from Argentinean waters.
abstract: In total, 17 specimens of Conger orbignianus Valenciennes, 1847 from waters off Mar del Plata, Argentina (38 degrees 08'S, 57 degrees 32'W) were examined for parasitic nematodes. A new nematode species, Cucullanus pedroi n. sp., is described (prevalence 76.5%, x intensity +/- SD = 3.8 +/- 2.7). The new species closely resembles some species parasitizing other anguilliform fishes; however, it can be distinguished from most of its congeners by the distribution pattern of caudal papillae (particularly fourth and eight pairs) and phasmids. Those congeners with similar pattern of papillae differ from the new species by the length of the spicules and gubernaculum and by the position of the excretory pore and deirids.
authors.affiliation: Laboratorio de Parasitología, Departamento de Biología, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Consejo Nacional de Investigaciones Científicas y Técnicas, Funes 3350, 7600 Mar del Plata, Argentina. jtimi@mdp.edu.ar
authors.forename: Juan T
authors.initials: JT
authors.lastname: Timi
authors.forename: Ana L
authors.initials: AL
authors.lastname: Lanfranchi
mesh_terms: D000818:Animals; D001118:Argentina; D004524:Eels / Q000469:parasitology*; D005260:Female; D005393:Fish Diseases / Q000469:parasitology*; D007411:Intestinal Diseases, Parasitic / Q000469:parasitology / Q000662:veterinary*; D008297:Male; D008855:Microscopy, Electron, Scanning / Q000662:veterinary; D009348:Nematoda / Q000145:classification* / Q000302:isolation & purification / Q000648:ultrastructure*; D009349:Nematode Infections / Q000469:parasitology / Q000662:veterinary*