Elasmobranchi (squali e razze) (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); stenseni: In honor of Danish geologist and anatomist Niels Stensen (1638-1686, also known as Nicolas Steno), for “important studies of elasmobranch anatomy, which, because of their scientific accuracy, were influential in the beginnings of elasmobranch systematics in the pre-Linnaean period and later, even to the time of the appearance of Müller and Henle’s ‘Plagiostomia’ in 1841”. (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
Ecologia
marino batidemersale; distribuzione batimetrica 915 - 975 m. Deep-water; 9°N - 2°N
Eastern Central Pacific: Panama (Ref. 244). Presence in Galapagos is questionable (Ref. 28023).
Size / Peso / Age
Maturity: Lm ? range ? - ? cm
Poorly known. Maximum length might be over 23 cm TL. Oviparous (Ref. 50449).
Life cycle and mating behavior
Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve
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. 130435)
Threat to humans
Harmless
Human uses
Pesca: di nessun interesse
Strumenti
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00355 (0.00176 - 0.00714), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.9 ±0.4 se; based on size and trophs of closest relatives
Resilienza (Ref.
120179): Molto basso, tempo minimo di raddoppiamento della popolazione più di 14 anni (Fec assumed to be <10).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (47 of 100).
