Elasmobranchii (haaien en roggen) (sharks and rays) >
Squaliformes (Sleeper and dogfish sharks) >
Somniosidae (Sleeper sharks)
Etymology: Zameus: zame, Japanese for shark (at the time, Z. squamulosus was known only from Japan). (See ETYFish); squamulosus: Latin for covered or beset with small scales, “so minute as to give a velvety appearance to the skin”. (See ETYFish).
More on author: Günther.
Environment: milieu / climate zone / depth range / distribution range
Ecologie
marien benthopelagisch; diepte 0 - 2200 m (Ref. 6871), usually 400 - 900 m (Ref. 55584). Deep-water; 68°N - 56°S, 180°W - 180°E
Atlantic, Indian and Pacific tropical oceans.
Lengte bij maturiteit / Grootte / Gewicht / Leeftijd
Maturity: Lm ?, range 59 - ? cm
Max length : 84.0 cm TL mannelijk / geslacht onbekend; (Ref. 6871)
Dorsale stekels (totaal): 2; Dorsale zachte stralen (totaal): 0; Anale stekels 0; Anale zachte stralen: 0. Black in color, small dorsal fin spines, moderately long snout, small lanceolate teeth without cusplets in upper jaw and large high, knife-cusped cutting teeth in lower jaw, mouth moderately wide and nearly transverse, caudal fin with strong subterminal notch and short lower lobe (Ref. 247).
Demersal or pelagic near continental slopes and seamounts in depths of 550-2,000 m (Ref. 6871, 58302). Also found from the surface to 580 m over deep water (Ref. 26346). Ovoviviparous (Ref. 205). Used dried and salted for human consumption and for fishmeal (Ref. 6871). Caught rarely by longline fisheries operating in deepwater; also caught, but rarely landed, by pelagic tuna longline fisheries (Ref.58048).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Distinct pairing with embrace (Ref. 205). Presumambly viviparous, with yolk-sac dependancy (Ref.58048).
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)
Status op de Rode Lijst van het IUCN (Ref. 130435)
Gevaar voor de mens
Harmless
Gebruik door de mens
Visserij: van minder commercieel belang
Meer informatie
ReferentiesAquacultuurAquacultuurprofielKweeklijnenGeneticaElectrophoresesErfelijkheidZiektesVerwerkingNutrientsMassaconversie
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Estimates based on models
Preferred temperature (Ref.
123201): 4.1 - 12.6, mean 7.7 °C (based on 948 cells).
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00168 - 0.00901), b=3.13 (2.94 - 3.32), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 4.0 ±0.60 se; based on food items.
Weerstandsvermogen (Ref.
120179): laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (54 of 100).
Nutrients (Ref.
124155): Calcium = 5.01 [0.96, 26.10] mg/100g; Iron = 0.208 [0.047, 0.710] mg/100g; Protein = 18.7 [16.3, 21.1] %; Omega3 = 0.3 [0.1, 1.0] g/100g; Selenium = 20.2 [5.1, 67.9] μg/100g; VitaminA = 15.5 [2.9, 85.2] μg/100g; Zinc = 0.398 [0.181, 0.835] mg/100g (wet weight);
