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Cybium,
Revue
Internationale dIchtyologie |
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Apristurus melanoasper, a new species of deep-water catshark from the North Atlantic (Chondrichthyes: Carcharhiniformes: Scyliorhinidae) Samuel Paco IGLÉSIAS (1), Kazuhiro NAKAYA (2) & Matthias STEHMANN (3) (1) UMR
5178, Station de Biologie marine, Département Milieux et
Peuplements aquatiques, Muséum national dHistoire naturelle,
Place de la Croix, BP 225, 29182 Concarneau cedex,
FRANCE. Abstract.
- A new deep-water catshark, Apristurus melanoasper n. sp.,
is described based on 53 specimens from the North Atlantic Ocean at 512
to 1520 m depth. This new species is characterized by having longer upper
labial furrow than the lower one, high count of spiral intestine valves,
a long abdomen, large dermal denticles and black coloration of the body.
Among the species of the North Atlantic, this new species is most similar
to A. laurussonii, but is distinguishable by combination of the
following characters: an interorbital space which is 1.9 to 3.5 times
eyes horizontal diameter, interspace between pectoral fin tip and pelvic
fin which is 1.3 to 2.5 times pectoral fin width, large dermal denticles
giving very rough texture to the skin, and black body colouration. A mitochondrial
DNA sequence of 1500 nucleotides of the species presents 28 differences
when aligned with that of A. laurussonii. |
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