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Gadiformes (Cods) >
Macrouridae (Grenadiers or rattails)
Etymology: Malacocephalus: Greek, malakos = soft + Greek, kephale = head (Ref. 45335); boretzi: Named for L.A. Borets (TINRO) (Ref. 33732).
Eponymy: Dr Leonid A Boretz (also spelled Borets) was a Russian ichthyologist at the Pacific Scientific Research Fisheries Centre, Vladivostok. [...] (Ref. 128868), visit book page.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
marin benthopélagique; profondeur 270 - 290 m (Ref. 40966). Deep-water
Northwest Pacific (Ref. 40966) and Northeast Pacific (Ref. 58302).
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 47.0 cm TL mâle / non sexé; (Ref. 33732)
Épines dorsales (Total) : 2; Rayons mous dorsaux (Total) : 9 - 11; Rayons mous anaux: 17 - 20. Pectoral fin long. Teeth small, conical, numerous, with fang-shaped teeth on dentary. Luminous organ a small roundish anterior leathery lens, located in a deep pit . Few rows of scales separated from periproct and scale covered skin within the limits of periproct which is not separated from the latter by processes. Luminous gland with about 10 muscular cords located on its dorsal surface. Abdominal vertebrae 12-13 (Ref. 33732).
Body shape (shape guide): elongated.
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Cohen, D.M., T. Inada, T. Iwamoto and N. Scialabba, 1990. FAO species catalogue. Vol. 10. Gadiform fishes of the world (Order Gadiformes). An annotated and illustrated catalogue of cods, hakes, grenadiers and other gadiform fishes known to date. FAO Fish. Synop. 125(10). Rome: FAO. 442 p. (Ref. 1371)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Outils
Articles particuliers
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Sources Internet
Estimations basées sur des modèles
Température préférée (Réf.
123201): 5.2 - 6.5, mean 5.7 °C (based on 12 cells).
Indice de diversité phylogénétique (Réf.
82804): PD
50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00219 (0.00111 - 0.00432), b=3.20 (3.03 - 3.37), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Niveau trophique (Réf.
69278): 3.8 ±0.4 se; based on size and trophs of closest relatives
Résilience (Réf.
120179): Faible, temps minimum de doublement de population : 4,5 à 14 années (Preliminary K or Fecundity.).
Vulnérabilité de la pêche (Ref.
59153): Moderate vulnerability (37 of 100).
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