Two new species of cystidicolid nematodes from the digestive tract of the deep-sea fish Coryphaenoides mediterraneus (Giglioli) (Macrouridae) from the Mid-Atlantic Ridge

0327062 - BC 2010 RIV NL eng J - Journal Article
Moravec, František - Klimpel, S.
Two new species of cystidicolid nematodes from the digestive tract of the deep-sea fish Coryphaenoides mediterraneus (Giglioli) (Macrouridae) from the Mid-Atlantic Ridge.
Systematic Parasitology. Roč. 73, č. 1 (2009), s. 37-47. ISSN 0165-5752. E-ISSN 1573-5192
R&D Projects: GA MŠMT LC522; GA ČR(CZ) GA524/06/0170
Institutional research plan: CEZ:AV0Z60220518
Keywords : Ascarophis * Neoascarophis * Coryphaenoides
Subject RIV: GJ - Animal Vermins ; Diseases, Veterinary Medicine
Impact factor: 0.911, year: 2009

Two new nematode species, Ascarophis longiovata n. sp. and Neoascarophis longispicula n. sp. (both Cystidicolidae), are described from the digestive tract of the marine deep-water fish Coryphaenoides mediterraneus (Mediterranean grenadier) from the Mid-Atlantic Ridge. The former species is characterised mainly by the structure of the mouth (large pseudolabia, each with well-developed dorsal and ventral extension and bearing small apical protrusion; submedian labia almost absent), the large, elongate-oval non-filamented eggs (60-66 × 18-27 µm), the cervical inflation of the cuticle, the bifurcated deirids, and the lengths of the spicules (315-360 and 120-147 µm), whereas the latter (only males available) by the lengths of the spicules (960-1,149 and 258-351 µm) and their length ratio (1:1.91-2.71), the shape of the deirids (bifurcate, with long, narrow posterior arms), and the location of the excretory pore and deirids well posterior to the level of the nerve-ring.
Permanent Link: http://hdl.handle.net/11104/0173966