Scymnodon ringens, Knifetooth dogfish : fisheries

Scymnodon ringens Barbosa du Bocage & de Brito Capello, 1864

Knifetooth dogfish
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Scymnodon ringens   AquaMaps   Data sources: GBIF OBIS
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Image of Scymnodon ringens (Knifetooth dogfish)
Scymnodon ringens
Picture by Serrano, A.

Classification / Names Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa

Élasmobranches (requins et raies) (sharks and rays) > Squaliformes (Sleeper and dogfish sharks) > Somniosidae (Sleeper sharks)
Etymology: Scymnodon: Greek, skymnos, -ou = little lion + Greek, odous = teeth (Ref. 45335).

Environment: milieu / climate zone / depth range / distribution range Écologie

; marin bathypélagique; profondeur 200 - 1600 m (Ref. 247), usually 550 - 1450 m (Ref. 10717).   Deep-water; 61°N - 54°S, 18°W - 172°W

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

Eastern Atlantic: along the slope from Scotland to Spain, Portugal, Senegal. Southwest Pacific: New Zealand (Ref. 26346).

Taille / Poids / Âge

Maturity: Lm ?  range ? - ? cm
Max length : 110 cm TL mâle / non sexé; (Ref. 247)

Description synthétique Morphologie | Morphométrie

Épines anales 0; Rayons mous anaux: 0. Black in color; small dorsal fin spines; short snout; small lanceolate teeth without cusplets in upper jaw and huge high, knife-cusped cutting teeth in lower jaw; mouth very wide and broadly arched; caudal fin with weak subterminal notch and no lower lobe (Ref. 247).

Biologie     Glossaire (ex. epibenthic)

A rare species (Ref. 26346) inhabiting continental slopes (Ref. 247). Usually mesopelagic although taken most often near the bottom (Ref. 10717). Its razor-edged lower teeth is used to attack and dismember large prey (Ref. 247). Ovoviviparous (Ref. 205). Utilized dried salted for human consumption and for fishmeal (Ref. 247).

Life cycle and mating behavior Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Probably ovoviviparous (Ref. 247). Distinct pairing with embrace (Ref. 205).

Référence principale Upload your references | Références | Coordinateur | Collaborateurs

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)

Statut dans la liste rouge de l'IUCN (Ref. 123251)

  Données manquantes (DD) ; Date assessed: 01 December 2008

CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Traumatogenic





Utilisations par l'homme

Pêcheries: intérêt commercial mineur
FAO - pêcheries: landings; Publication: search | FishSource | Sea Around Us

Plus d'informations

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Zones FAO
Écosystèmes
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Écologie
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Noms communs
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Prédateurs
Écotoxicologie
Reproduction
Maturité
Frai
Rassemblement de ponte
Fécondité
Œufs
Développement de l'œuf
Taille/Âge
Croissance
Longueur-poids
Longueur-longueur
Fréquences de longueurs
Morphométrie
Morphologie
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Dynamique des populations larvaires
Recrutement
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BRUVS
Références
Aquaculture
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Sources Internet

Aquatic Commons | BHL | Cloffa | Websites from users | FishWatcher | CISTI | Catalog of Fishes: Genre, Espèce | DiscoverLife | ECOTOX | FAO - pêcheries: landings; Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: génôme, nucléotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Bases de données nationales | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Arbre de Vie | Wikipedia: aller à, chercher | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Preferred temperature (Ref. 115969): 4.2 - 11.4, mean 7.7 °C (based on 164 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.7500   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00490 (0.00210 - 0.01144), b=3.13 (2.93 - 3.33), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Niveau trophique (Ref. 69278):  3.9   ±0.7 se; based on diet studies.
Résilience (Ref. 120179):  Faible, temps minimum de doublement de population : 4,5 à 14 années (Fec assumed to be <100).
Vulnérabilité (Ref. 59153):  High vulnerability (58 of 100) .
Catégorie de prix (Ref. 80766):   Unknown.
Nutrients (Ref. 124155):  Calcium = 7.09 [1.16, 24.70] mg/100g ; Iron = 0.3 [0.1, 0.8] mg/100g ; Protein = 19.4 [16.9, 21.7] % ; Omega3 = 0.336 [0.127, 1.015] g/100g ; Selenium = 10.8 [2.8, 33.2] μg/100g ; VitaminA = 23.5 [5.7, 94.9] μg/100g ; Zinc = 0.338 [0.162, 0.780] mg/100g (wet weight);