Elasmobranchii (Haie und Rochen) (sharks and rays) >
Squaliformes (Sleeper and dogfish sharks) >
Somniosidae (Sleeper sharks)
Etymology: Scymnodon: scymnus, an ancient name for some kind of shark, derived from a Greek word meaning young animal, cub or whelp; odon (Gr.), tooth, referring to large, triangular cutting teeth on lower jaw of S. ringens. (See ETYFish); macracanthus: macro-, from makros (Gr.), long or large; acanthus (L.), from akantha (Gr.), thorn, referring to stout, prominent dorsal-fin spines. (See ETYFish).
More on author: Regan.
Environment: milieu / climate zone / depth range / distribution range
Ökologie
; seewasser bathydemersal; tiefenbereich 650 - 920 m (Ref. 26346). Deep-water; 50°S - 54°S
Southeast Pacific: Straits of Magellan. Southwest Pacific: New Zealand (Ref. 26346). Southwest Atlantic: Argentina (Ref. 58839).
Size / Gewicht / Alter
Maturity: Lm ? range ? - ? cm
Max length : 68.0 cm TL Männchen/unbestimmt; (Ref. 247)
Rückenflossenstacheln (insgesamt): 2; Afterflossenstacheln 0; Afterflossenweichstrahlen: 0. Dark brown or blackish in color, dorsal fins with fairly prominent fin spines, moderately long snout, lanceolate upper teeth and bladelike lower teeth with short, oblique cusps, stocky body that tapers abruptly from pectoral region, and moderately large tricuspidate and tricarinate lateral trunk denticles (Ref. 247).
A rare species inhabiting lower continental slopes (Ref. 26346). Ovoviviparous (Ref. 205).
Life cycle and mating behavior
Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven
Ovoviviparous (Ref. 26346). Distinct pairing with embrace (Ref. 205).
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 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome, FAO. (Ref. 247)
IUCN Rote Liste Status (Ref. 125652)
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Fischereien: nicht kommerziell
Mehr Information
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Estimates based on models
Phylogenetic diversity index (Ref.
82805): PD
50 = 0.5313 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00407 (0.00176 - 0.00943), b=3.13 (2.94 - 3.32), in cm total length, based on LWR estimates for this Subfamily-BS (Ref.
93245).
Trophic level (Ref.
69278): 4.0 ±0.5 se; based on size and trophs of closest relatives
Widerstandsfähigkeit (Ref.
120179): niedrig, Verdopplung der Population dauert 4,5 - 14 Jahre. (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (47 of 100) .
Climate Vulnerability (Ref.
125649): (0 of 100) .
