Gadus chalcogrammus, Alaska pollock : fisheries
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Gadus chalcogrammus Pallas, 1814

Alaska pollock
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Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Gadus chalcogrammus   AquaMaps   Data sources: GBIF OBIS
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Image of Gadus chalcogrammus (Alaska pollock)
Gadus chalcogrammus
Picture by Archipelago Marine Research Ltd.

Classificação / Names Nomes comuns | Sinônimos | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (peixes com raios nas barbatanas) > Gadiformes (Cods) > Gadidae (Cods and haddocks)
Etymology: Gadus: Latin, gadus = a fish, cod? (Ref. 45335);  chalcogrammus: Name from the Greek 'chalcos' meaning brass and 'gramma' meaning mark (Ref. 6885).  More on author: Pallas.

Issue
This species is placed in the genus Gadus in Eschmeyer (CofF ver. Jan. 2012: Ref. 89336). More studies are needed for a complete revision of all genera of Gadidae.

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

; marinhas; estuarina bentopelágico; não migratória; intervalo de profundidade ? - 1280 m (Ref. 50550), usually 30 - 400 m (Ref. 54255).   Polar; 68°N - 34°N, 129°E - 120°W (Ref. 54255)

Distribuição Países | Áreas da FAO | Ecossistemas | Ocorrências | Point map | Introduções | Faunafri

North Pacific: from Kivalina, Alaska, to the southern Sea of Japan and to Carmel, California, USA. The occurrence off the northern part of Baja California (Mexico), as reported from Quast and Hall, (1972) (Ref. 6876) is apparently erroneous.

Comprimento de primeira maturação / Tamanho / Peso / Idade

Maturity: Lm 36.9  range ? - ? cm
Max length : 91.0 cm TL macho/indeterminado; (Ref. 2850); peso máx. publicado: 3.9 kg (Ref. 56335); idade máx. registrada: 28 anos (Ref. 55701)

Descrição suscinta Morfologia | Morfometria

Espinhos dorsais (total): 0; Raios dorsais (total): 38-48; Espinhos anais 0; Raios anais : 33 - 42. The dorsal fins are widely separated. The pelvic fins have a slightly elongated filament. The lateral line is continuous to about the back end of the first dorsal-fin base; it is interrupted at the read of the body. On the head are lateral line pores. Body color is olive green to brown on the back and becomes silvery on the sides and pale ventrally, often with mottled patterns or blotches.

Biologia     Glossário (p.ex. epibenthic)

The adults usually live near to the sea floor, but sometimes they also appear near the surface (Ref. 1371). They perform diurnal vertical migrations (Ref. 1371). They mainly feed on krill (Ref. 39882) but they also eat fishes and crustaceans (Ref. 6885). The adults which are spawning are often solely captured for their roe. The meat is used to produce surimi (this is an imitation of shellfish meat) (Ref. 28499). They are traded as fresh fish, boneless flesh, in frozen blocks or as surimi. The fish is cooked in the microwave, steamed or fried in butter (Ref. 9988).

Ciclo de vida ou comportamento de acasalamento Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas

Oviparous, sexes are separate (Ref. 205). Congregate in dense schools to spawn, usually at 50 to 250 m depth.

Referência principal Upload your references | Referências | Coordenador | Colaboradores

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 na Lista Vermelha da UICN (Ref. 120744)


CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para os humanos

  Harmless





Uso pelos humanos

Pescarias: altamente comercial
FAO(pescarias: produção, perfil da espécie; publication : search) | FishSource | Sea Around Us

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Estimates based on models

Preferred temperature (Ref. 115969): 0.4 - 5.6, mean 1.6 (based on 444 cells).
Índice de diversidade filogenética (Ref. 82805):  PD50 = 0.6250   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00661 (0.00572 - 0.00763), b=3.02 (2.98 - 3.06), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
Nível Trófico (Ref. 69278):  3.6   ±0.1 se; Based on diet studies.
Generation time: 3.8 (3.3 - 9.2) years. Estimated as median LN(3)/K based on 19 growth studies.
Resiliência (Ref. 120179):  Baixo, tempo mínimo de duplicação da população 4,5 - 14 anos (Musick et al. 2000 (Ref. 36717); tmax = 28).
Prior r = 0.32, 95% CL = 0.21 - 0.50, Based on 8 stock assessments.
Vulnerabilidade (Ref. 59153):  Moderate vulnerability (37 of 100) .
Categoria de preço (Ref. 80766):   Low.