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Dichelyne (Cucullanellus) romani n. sp. (Nematoda: Cucullanidae) in notacanthid fishes from the Northeast Atlantic and Western Mediterranean

Isbert, Wolf [autor] | Montero Royo, Francisco Esteban [autor] | Carrassón, Maite [autora] | González Solís, David [autor].
Tipo de material: Artículo en línea Artículo en línea Tema(s): Notacanthus chemnitzii | Notacanthus bonaparte | Parásitos de peces | Dichelyne (Cucullanellus) romani | Peces marinosTema(s) en inglés: Notacanthus chemnitzii | Notacanthus bonaparte | Fishes parasites | Dichelyne (Cucullanellus) romani | Marine fishesDescriptor(es) geográficos: Océano Atlántico | Mar Mediterráneo Nota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: Systematic Parasitology. volumen 91, número 1 (May 2015), páginas 35-47. --ISSN: 0165-5752Número de sistema: 1249Resumen:
Inglés

A new cucullanid, Dichelyne (Cucullanellus) romani n. sp. (Nematoda: Cucullanidae), is described from the digestive tract of two notacanthid fishes, Notacanthus chemnitzii Bloch and N. bonaparte Risso (Notacanthiformes: Notacanthidae), from the Northeast Atlantic and Western Mediterranean. The presence of a precloacal sucker and ten pairs of caudal papillae in males allocates it to the subgenus Cucullanellus Törnquist, 1931. The new species differs from other members of this subgenus in its larger body size, smaller spicule/body length ratio, the distribution of caudal papillae, and the position of deirids and excretory pore. Both notacanthid fishes act as definitive hosts with slightly larger nematode specimens detected in N. chemnitzii. A wide intraspecific variability was found in the distribution of caudal papillae, and in some specimens the position of deirids, excretory pore and length of intestinal caecum also varied. A complete list of all assigned species of the subgenus Cucullanellus is presented and discussed as there are several uncertainties regarding the validity and synonymy of some species. This is the first species of Dichelyne Jägerskiöld, 1902 in a notacanthid fish and one of the only two records in deep-sea fish species.

Recurso en línea: http://link.springer.com/article/10.1007/s11230-015-9556-1#page-1
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Disponible para usuarios de ECOSUR con su clave de acceso

A new cucullanid, Dichelyne (Cucullanellus) romani n. sp. (Nematoda: Cucullanidae), is described from the digestive tract of two notacanthid fishes, Notacanthus chemnitzii Bloch and N. bonaparte Risso (Notacanthiformes: Notacanthidae), from the Northeast Atlantic and Western Mediterranean. The presence of a precloacal sucker and ten pairs of caudal papillae in males allocates it to the subgenus Cucullanellus Törnquist, 1931. The new species differs from other members of this subgenus in its larger body size, smaller spicule/body length ratio, the distribution of caudal papillae, and the position of deirids and excretory pore. Both notacanthid fishes act as definitive hosts with slightly larger nematode specimens detected in N. chemnitzii. A wide intraspecific variability was found in the distribution of caudal papillae, and in some specimens the position of deirids, excretory pore and length of intestinal caecum also varied. A complete list of all assigned species of the subgenus Cucullanellus is presented and discussed as there are several uncertainties regarding the validity and synonymy of some species. This is the first species of Dichelyne Jägerskiöld, 1902 in a notacanthid fish and one of the only two records in deep-sea fish species. eng

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