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Gadiformes (Cods) >
Macruronidae (Blue grenadiers)
Etymology: Macruronus: Greek, makros = great + Greek, onos = hake.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
marin; saumâtre benthopélagique; océanodrome; profondeur 0 - 1000 m (Ref. 26566), usually 200 - 700 m (Ref. 9563). Subtropical; 15°S - 55°S, 111°E - 173°W (Ref. 58452)
Southwest Pacific: New Zealand and southern Australia.
Longueur à la première maturité / Taille / Poids / Âge
Maturité: Lm 67.5, range 65 - 70 cm
Max length : 120 cm TL mâle / non sexé; (Ref. 1371); 130.0 cm TL (female); common length : 80.0 cm TL mâle / non sexé; (Ref. 1371); poids max. publié: 1.5 kg (Ref. 1371); poids max. publié: 1.5 kg; âge max. reporté: 25 années (Ref. 6390)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Épines dorsales (Total) : 12 - 13; Rayons mous dorsaux (Total) : 96 - 106; Épines anales: 0; Rayons mous anaux: 89 - 93; Vertèbres: 78 - 81. Dorsal surface silvery, with a purple or blue-green tinge; plank and belly silvery; fins darker. Body very elongate and compressed with a tapering tail, dorsal and anal fins confluent with the caudal fin (Ref. 33856).
Body shape (shape guide): elongated; Cross section: oval.
Appear to live usually on or near the bottom, but may occasionally move up into mid-waters. Large adult fish generally occur deeper than 400 m, while juveniles may be found in shallower water (Ref. 9072), more commonly found in large estuaries and bays, and may even enter freshwaters (Ref. 1371). Juvenile specimens and especially adults belonging to the American subspecies, have been caught from the coastal zone to 110 m (Ref. 58452). Form schools. Feed primarily on lantern fishes. In New Zealand, it feeds in midwater on small fish, crustaceans and squid. Oviparous, spawn 1 million eggs on the average which are released all at one time (Ref. 6390). Utilized fresh and frozen; can be steamed, fried, cooked in microwave and baked (Ref. 9988).
Female blue grenadier produce about 1 million eggs on average, which are all released at once (Ref. 6390).
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
Pêcheries: hautement commercial
Outils
Articles particuliers
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Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf. 82804) |
PD50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00389 (0.00222 - 0.00681), b=2.98 (2.82 - 3.14), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245). |
Niveau trophique (Réf. 69278) |
4.5 ±0.2 se; based on diet studies. |
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Generation time |
6.1 (5.2 - 8.9) years. Estimated as median ln(3)/K based on 18 growth studies. |
Résilience (Réf. 120179) |
Faible, temps minimum de doublement de population : 4,5 à 14 années (K=0.12-0.2; tm=3-7; tmax=25; Fec = 1,000,000). |
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Rate of population increase |
Prior r = 0.29, 95% CL = 0.19 - 0.44, Based on 3 full stock assessments. |
Vulnérabilité de la pêche (Ref. 59153) |
High to very high vulnerability (66 of 100). 🛈 |
Vulnérabilité climatique (Ref. 125649) |
High vulnerability (61 of 100). 🛈 |
Catégorie de prix (Ref. 80766) |
Medium.
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Nutriments (Ref. 124155) |
Calcium = 26.4 [12.3, 56.9] mg/100g; Iron = 0.629 [0.299, 1.299] mg/100g; Protein = 17.7 [15.5, 19.8] %; Omega3 = 0.224 [0.105, 0.456] g/100g; Selenium = 62.1 [26.1, 122.9] μg/100g; VitaminA = 17.2 [5.4, 54.1] μg/100g; Zinc = 0.541 [0.348, 0.866] mg/100g (wet weight); based on nutrient studies. |