Elasmobranchii (sharks and rays) > Carcharhiniformes
(Ground sharks) > Pentanchidae
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); manis: Latin for ghost or shade of the departed, referring to its grayish-white color. (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
Marine; bathydemersal; depth range 600 - 1900 m (Ref. 55584). Deep-water; 60°N - 40°N
Northwest Atlantic: off Massachusetts, USA. Northeast Atlantic: Porcupine Bank west of Ireland. Nominal records of Apristurus profundurum from off Mauritania (Ref. 6479) possibly pertain to this species also.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 85.0 cm TL male/unsexed; (Ref. 244); 76.0 cm TL (female)
Found on the continental slopes. Oviparous (Ref. 50449).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449).
Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref. 244)
IUCN Red List Status (Ref. 126983)
Threat to humans
Fisheries: of no interest
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 123201
): 3.1 - 3.9, mean 3.7 °C (based on 6 cells).
Phylogenetic diversity index (Ref. 82804
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00355 (0.00173 - 0.00727), b=3.08 (2.90 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 4.0 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Very Low, minimum population doubling time more than 14 years (Fec assumed to be <10).
Fishing Vulnerability (Ref. 59153
): Moderate to high vulnerability (54 of 100).
Nutrients (Ref. 124155
): Calcium = 8.63 [1.58, 52.32] mg/100g ; Iron = 0.326 [0.073, 1.122] mg/100g ; Protein = 18.8 [16.7, 21.0] % ; Omega3 = 0.234 [0.089, 0.599] g/100g ; Selenium = 17 [5, 57] μg/100g ; VitaminA = 5.85 [1.19, 27.20] μg/100g ; Zinc = 0.287 [0.143, 0.534] mg/100g (wet weight);