Elasmobranchii (hajar och rockor) (sharks and rays) >
Carcharhiniformes (Ground sharks) >
Pentanchidae (Deepwater catsharks)
Etymology: Apristurus: a-, Latin privative, i.e., without; pristis, from pristes (Gr.), sawyer (but here meaning saw); oura (Gr.), tail, referring to absence of saw-toothed crest of enlarged dermal denticles along upper edge of caudal fin as found in the closely related Pristiurus (=Galeus) (See ETYFish); melanoasper: melanos (Gr.), black; asper (L.), rough, referring to black body color and rough skin (See ETYFish).
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
marina batypelagisk; djupintervall 512 - 1520 m (Ref. 56212). Deep-water
North Atlantic: Slope, off northern U.S. and off France, Ireland and British Isles.
Längd vid första mognad / Storlek / Vikt / Ålder
Könsmognad: Lm 57.0, range 55 - 59 cm
Max length : 76.1 cm TL hane/ej könsbestämd; (Ref. 56212); 73.2 cm TL (female); publicerad maxvikt: 1.3 kg (Ref. 56212); publicerad maxvikt: 1.3 kg
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Diagnosis: Body uniformly black, slightly brownish in larger specimens. Dermal denticles large and giving a rough texture to the skin. Upper labial furrows longer than the lower ones. First dorsal fin only slightly smaller than the second dorsal fin, originating from above anterior third to middle of the pelvic fin base. Second dorsal fin insertion just before level of anal fin insertion. Interorbital space 1.9-3.5 times eye horizontal diameter. Abdomen between pectoral fin tip and pelvic fin origin 1.3-2.5 times pectoral fin width. Spiral valves of the intestine 19-23 (mostly 21-22). Monospondylous + precaudal diplospondylous vertebrae 36-43 + 26-32 (often 38-40 + 28-30). Dermal denticles on tongue and palate absent (Ref. 56212).
Body shape (shape guide): elongated.
Found generally at depths of more than 1000 meters (Ref. 56212).
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
Iglésias, S.P., K. Nakaya and M. Stehmann, 2004. Apristurus melanoasper, a new species of deep-water catshark from the North Atlantic (Chondrichthyes: Carcharhiniformes: Scyliorhinidae). Cybium 28(4):345-356. (Ref. 56212)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
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Harmless
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Uppskattningar baserade på modeller
Önskad temperatur (Ref.
123201): 3.5 - 9.9, mean 7.2 °C (based on 79 cells).
Index för fylogenetisk mångfald (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00347 (0.00172 - 0.00698), b=3.08 (2.90 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisk nivå (Ref.
69278): 4.0 ±0.6 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Mycket låg, lägsta populationsfördubblingstid mer än 14 år (Fec assumed to be <10).
Sårbarhet i fisket (Ref.
59153): Moderate to high vulnerability (50 of 100).
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Näringsämnen (Ref.
124155): Calcium = 8.66 [1.82, 62.13] mg/100g; Iron = 0.255 [0.057, 1.009] mg/100g; Protein = 19.6 [17.3, 21.9] %; Omega3 = 0.115 [0.035, 0.351] g/100g; Selenium = 13.7 [3.4, 53.5] μg/100g; VitaminA = 13.5 [1.6, 98.3] μg/100g; Zinc = 0.388 [0.159, 0.952] mg/100g (wet weight);
