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Champsocephalus gunnari, Mackerel icefish : fisheries
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Champsocephalus gunnari
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Reyes, P.
Teleostei (teleosts) >
Perciformes/Notothenioidei
(Icefishes) >
Channichthyidae
(Crocodile icefishes)
Etymology:
Champsocephalus:
Greek, champso = crocodile, voracious predator + Greek, kephale = head (Ref.
45335
)
.
More on author:
Lönnberg
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; benthopelagic; depth range 0 - 700 m (Ref.
11892
), usually 30 - 250 m (Ref.
11892
). Polar; 48°S - 66°S, 65°W - 77°E
Southern Ocean: Islands of the Scotia Sea, including the northern part of Antarctic Peninsula; Kerguelen, Heard and Bouvet islands.
Length at first maturity / Size / Weight / Age
Maturity: L
m
26.2
, range 21 - 32 cm
Max length : 66.0 cm TL male/unsexed; (Ref.
5200
); common length : 35.0 cm TL male/unsexed; (Ref.
2805
); max. published weight: 2.0 kg (Ref.
4883
)
Vertebrae
: 59 - 62
Feed mainly on krill and mysids. Spawn in autumn and winter (Ref.
50743
). Synchronous spawner (Ref.
50743
). Larval pelagic phase is long (Ref.
71843
). Utilized as a food fish (Ref.
4931
).
Hureau, J.-C.
, 1985. Channichthyidae. p. 261-277. In W. Fischer and J.C. Hureau (eds.) FAO species identification sheets for fishery purposes. Southern Ocean (Fishing areas 48, 58 and 88). Rome. Vol. 2. (Ref.
2805
)
IUCN Red List Status (Ref.
130435
)
Not Evaluated
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
Fisheries: minor commercial
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Estimates based on models
Preferred temperature (Ref.
123201
): -1.1 - 2.9, mean 1.5 °C (based on 50 cells).
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00117 (0.00100 - 0.00138), b=3.47 (3.42 - 3.52), in cm total length, based on LWR estimates for this species (Ref.
93245
).
Trophic level (Ref.
69278
): 3.2 ±0.2 se; based on diet studies.
Resilience (Ref.
120179
): Medium, minimum population doubling time 1.4 - 4.4 years (K=0.13-0.39; tmax=13; tm=4; Fec=3,094).
Prior r = 0.39, 95% CL = 0.24 - 0.64, Based on 2 stock assessments.
Fishing Vulnerability (Ref.
59153
): Moderate vulnerability (35 of 100).
Climate Vulnerability (Ref.
125649
): High to very high vulnerability (68 of 100).
Price category (Ref.
80766
):
Very high
.
Nutrients (Ref.
124155
): Calcium = 20.5 [11.1, 44.8] mg/100g; Iron = 0.388 [0.165, 0.801] mg/100g; Protein = 16.9 [14.8, 18.9] %; Omega3 = 0.222 [0.107, 0.473] g/100g; Selenium = 25.9 [9.2, 64.1] μg/100g; VitaminA = 13.8 [2.8, 70.5] μg/100g; Zinc = 0.409 [0.265, 0.626] mg/100g (wet weight); based on
nutrient studies.
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