Elasmobranchii (haaien en roggen) (sharks and rays) >
Squaliformes (Bramble, sleeper and dogfish sharks) >
Squalidae (Dogfish sharks)
Etymology: Squalus: Genus name from Latin 'squalus' meaning shark (Ref. 6885, 27436).
Environment: milieu / climate zone / depth range / distribution range
Ecologie
; marien demersaal; diepteverspreiding 60 - 400 m (Ref. 247). Subtropical; 36°N - 56°S, 97°W - 45°W (Ref. 54893)
Western Atlantic: North Carolina to Florida (USA), Gulf of Mexico, Cuba, Hispaniola; southern Brazil and Argentina.
Size / Gewicht / Leeftijd
Maturity: Lm ?  range ? - 50 cm
Max length : 110 cm TL mannelijk/geslacht niet bekend; (Ref. 247); common length : 75.0 cm TL mannelijk/geslacht niet bekend; (Ref. 247)
A slim, gray shark with tips of dorsal fins black and edges of pectoral, pelvic and caudal fins white; two dorsal fins each with strong, ungrooved spine at front edge (Ref. 26938).
Inhabits continental shelves and uppermost slopes. Found in 60 to 380 m deep (Ref. 26938). Found on or near the bottom in large, dense schools. Probably feeds on bottom fishes and invertebrates. Ovoviviparous, with about 10 young per litter. A huge parasite (isopod) lives in its buccal cavity. Seldom used for food, but taken in commercial catches for its liver which yields oil and vitamins. Maximum depth reported taken from Ref. 55584.
Ovoviviparous, with about 10 young per litter (Ref. 247). 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)
Status op de Rode Lijst van het IUCN (Ref. 120744)
CITES (Ref. 118484)
Not Evaluated
Gevaarlijk voor mensen
Harmless
Gebruik door de mens
Visserij: van minder commercieel belang
Meer informatie
Leeftijd/GrootteGroeiLengte-gewicht parametersLengte-lengte parametersLengtefrequentiesMorfometrieMorfologieLarvenPopulatiedynamica van de larvenrecruteringAbundantie
ReferentiesAquacultuurAquacultuurprofielKweeklijnenGeneticaAlleelfrequentiesErfelijkheidZiektenVerwerkingMass conversion
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Estimates based on models
Preferred temperature (Ref.
115969): 13.6 - 23.7, mean 18.7 (based on 111 cells).
Phylogenetic diversity index (Ref.
82805): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00331 (0.00153 - 0.00716), b=3.09 (2.91 - 3.27), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Trophic Level (Ref.
69278): 4.2 ±0.6 se; Based on diet studies.
Weerstandsvermogen (Ref.
120179): zeer laag, minimale populatieverdubbelingstijd meer dan 14 jaar (Fec=10).
Kwetsbaarheid (Ref.
59153): High to very high vulnerability (71 of 100) .