Elasmobranchii (tubarões e raias) (sharks and rays) >
Squaliformes (Bramble, sleeper and dogfish sharks) >
Centrophoridae (Gulper sharks)
Etymology: Deania: From B. Dean (1916), ichthyiologist and researcher of ichtyiological bibliography (Ref. 45335).
Ambiente / Clima / Intervalo
Ecologia
; marinhas batidemersal; intervalo de profundidade 60 - 1490 m (Ref. 26346), usually 400 - 1400 m (Ref. 10717). Deep-water, preferred 20°C (Ref. 107945); 70°N - 56°S, 180°W - 180°E
Eastern Atlantic: Iceland along Atlantic slope to Algoa Bay, South Africa (Ref. 247, 5578). Western Pacific: southern Honshu in Japan, southern Australia, New Zealand. Occurrence in the Western Central Pacific uncertain (Ref. 31367). Eastern Pacific: southern Chile to northern Peru (Ref. 38549).
Length at first maturity / Tamanho / Peso / Idade
Maturity: Lm 105.0, range 70 - 111 cm
Max length : 122 cm TL macho/indeterminado; (Ref. 26346)
Espinhos dorsais (total): 2; Raios dorsais (total): 0; Espinhos anais 0; Raios anais : 0. A longnose dogfish with a long, 1st dorsal fin and no subcaudal keel (Ref. 5578). Grey-brownish in color (Ref. 6577).
Found on the outer continental and insular shelves and upper slopes (Ref. 247). Usually on or near the bottom but sometimes found well above it (Ref. 5578). Apparently in large schools (Ref. 5578). Feeds on pelagic bony fish, squid, octopus and shrimp (Ref. 5578). Ovoviviparous (Ref. 50449). Caught very rarely by demersal longline fisheries operating in deepwater of Indonesia. Utilized for its meat, fins (low value) and liver oil (very high value) (Ref. 58048).
Ovoviviparous, embryos feed solely on yolk (Ref. 50449). Young possibly number 6 to 12 in a litter, as these were the number of fertilized eggs found in the uteri of some specimens (Ref. 247). Size at birth 29 to 34 cm (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)
Status na Lista Vermelha da IUCN (Ref. 115185)
CITES (Ref. 94142)
Not Evaluated
Perigo para os humanos
Harmless
Uso pelos humanos
Pescarias: pouco comercial
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Estimates of some properties based on models
Phylogenetic diversity index (Ref.
82805): PD
50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00224 (0.00108 - 0.00465), b=3.14 (2.95 - 3.33), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Nível Trófico (Ref.
69278): 4.3 ±0.4 se; Based on diet studies.
Resiliência (Ref.
69278): Muito baixo, tempo mínimo de duplicação da população maior que 14 anos (K=0.077-0.135; Fec=6-12; tm=25).
Vulnerabilidade (Ref.
59153): High to very high vulnerability (66 of 100) .
