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Gadiformes (Cods) >
Macruronidae (Blue grenadiers)
Etymology: Macruronus: Greek, makros = great + Greek, onos = hake.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
marina; brackvatten bentopelagisk; havsvandrande; djupintervall 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.
Längd vid första mognad / Storlek / Vikt / Ålder
Könsmognad: Lm 67.5, range 65 - 70 cm
Max length : 120 cm TL hane/ej könsbestämd; (Ref. 1371); 130.0 cm TL (female); common length : 80.0 cm TL hane/ej könsbestämd; (Ref. 1371); publicerad maxvikt: 1.5 kg (Ref. 1371); publicerad maxvikt: 1.5 kg; rapporterad maxålder: 25 år (Ref. 6390)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Taggstrålar i ryggfenan (totalt) : 12 - 13; Mjukstrålar i ryggfenan (totalt) : 96 - 106; Taggstrålar i analfenan: 0; Mjukstrålar i analfenan: 89 - 93; Ryggkotor: 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)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
Fiskeri: kommersiellt viktig
Verktyg
Särskilda rapporter
Ladda ner XML
Internet-källor
Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref. 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). |
Trofisk nivå (Ref. 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. |
Resiliens (Ref. 120179) |
Låg, lägsta populationsfördubblingstid 4,5-14 år (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. |
Sårbarhet i fisket (Ref. 59153) |
High to very high vulnerability (66 of 100). 🛈 |
Sårbarhet för klimatet (Ref. 125649) |
High vulnerability (61 of 100). 🛈 |
Priskategori (Ref. 80766) |
Medium.
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Näringsämnen (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. |