Gadus chalcogrammus Pallas, 1814
Alaska pollock
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| Native range | All suitable habitat | Point map | Year 2050 |
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| This map was computer-generated and has not yet been reviewed. |
| Gadus chalcogrammus AquaMaps Data sources: GBIF OBIS |
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Gadus chalcogrammus
Foto de Archipelago Marine Research Ltd.
Imágenes | Vídeos | Google image
Foto de Archipelago Marine Research Ltd.
Clasificación / Nombres Nombres comunes | Sinónimos | Catalog of Fishes(Género, Especie) | ITIS | CoL | WoRMS | Cloffa
> 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.
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.
Taxonomic Remarks
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.
In the past decade, a number of molecular works have shown that T. chalcogramma coud be deeply nested in a clade that contains the Gadus spp.
It has been suggested that the species should be now assigned to Gadus, although none of these works had a conclusive statement with a complete taxonomic re-assessment. However, the name Gadus chalcogrammus may be used in scientific publications. If the American Fisheries Society has endorsed that change in the latest edition of its list of fish names, FAO will not change it until a more stable consensus is reached. Since this species is highly commercial, with a number of regulations and statistical reports using that name, it is preferable to change it with the strongest scientific support. In addition, they are other taxonomic issue in that family, with the same issues about names. Therefore, for the use by the rest of the society, the fishery domain in particular, we recommend to continue using T. chalcogramma and wait that a complete revision of the family and thorough taxonomic and nomenclatural decisions are published.
Entorno: milieu / zona climática / rango de profundidad / gama de distribución Ecología
marino; salobre bentopelágico; oceanodromo (Ref. 87829); rango de profundidad 0 - 1280 m (Ref. 120982), usually 30 - 590 m (Ref. 120982). Polar; 82°N - 33°N, 9°E - 117°W
Distribución Territorios | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Mapa de puntos | Introducciones | Faunafri
Northeast Atlantic, Arctic and North to Eastern Central Pacific: from Norway to Svalbard, east to Laptev, South Korea and Beaufort Sea, south to California, USA. The occurrence off the northern part of Baja California (Mexico), as reported from Quast and Hall, (1972) (Ref. 6876) is apparently erroneous.
Longitud en la primera madurez / Tamaño / Peso / Edad
Madurez: Lm 36.9 range ? - ? cm
Max length : 91.0 cm TL macho / no sexado; (Ref. 2850); peso máximo publicado: 3.9 kg (Ref. 56335); edad máxima reportada: 28 años (Ref. 55701)
Max length : 91.0 cm TL macho / no sexado; (Ref. 2850); peso máximo publicado: 3.9 kg (Ref. 56335); edad máxima reportada: 28 años (Ref. 55701)
Descripción breve Claves de identificación | Morfología | Morfometría
Espinas dorsales (total) : 0; Radios blandos dorsales (total) : 38 - 48; Espinas anales: 0; Radios blandos anales: 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.
Body shape (shape guide): fusiform / normal; Cross section: circular.
Body shape (shape guide): fusiform / normal; Cross section: circular.
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) and are considered as one of the straddling stocks in the northwest and northeast Pacific (Ref. 87829). 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 (may have been the case in the first years of the fishery in the U.S., but hasn't been true for some time. In 1994, the North Pacific Fishery Management Council/NOAA enacted an amendment to the Bering Sea and Gulf of Alaska Fishery Management Plans effectively banning the practice of stripping roe and discarding the carcasses, R. Rogness, pers.comm. April 2022). 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 vital y comportamiento de apareamiento Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Oviparous, sexes are separate (Ref. 205). Congregate in dense schools to spawn, usually at 50 to 250 m depth.
Referencia principal
Suba sus referencias | Referencias | Coordinador | 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)
CITES
Not Evaluated
Amenaza para el ser humano
Harmless
Usos humanos
Pesquerías: muy comercial; pesca deportiva: si
FAO - pesquerías: perfil de la especie, landings search; Publication: search | FishSource | Sea Around Us
Más información
Ecología Trófica
Alimentos (presas)
Composición de la dieta
consumo de alimento
Raciones de comida
Despredadores
Alimentos (presas)
Composición de la dieta
consumo de alimento
Raciones de comida
Despredadores
Dinámica de la población
Coeficiente del crecimiento para
Edades / tallas máximas
Longitud-peso rel.
Longitud-longitud rel.
Longitud-frecuencias
Conversión de masas
Reclutamiento
Abundancia
Coeficiente del crecimiento para
Edades / tallas máximas
Longitud-peso rel.
Longitud-longitud rel.
Longitud-frecuencias
Conversión de masas
Reclutamiento
Abundancia
Ciclo de vida
Reproducción
Madurez
Madurez/Gills rel.
Fecundidad
Puesta
Agregaciones de desove
Huevos
Desarrollo de los huevos
Larva
Dinámica larvaria
Reproducción
Madurez
Madurez/Gills rel.
Fecundidad
Puesta
Agregaciones de desove
Huevos
Desarrollo de los huevos
Larva
Dinámica larvaria
Distribución
Territorios
Áreas FAO
Ecosistemas
Ocurrencias, apariciones
Introducciones
BRUVS - Vídeos
Territorios
Áreas FAO
Ecosistemas
Ocurrencias, apariciones
Introducciones
BRUVS - Vídeos
Anatomía
Superficie branquial
Cerebro
Otolito
Superficie branquial
Cerebro
Otolito
Fisiología
Composición corporal
Nutrientes
Consumo del oxígeno
Tipo de natación
Velocidad de natación
Pigmentos visuales
Sonido de peces
Enfermedades y parásitos
Toxicidad (CL50)
Composición corporal
Nutrientes
Consumo del oxígeno
Tipo de natación
Velocidad de natación
Pigmentos visuales
Sonido de peces
Enfermedades y parásitos
Toxicidad (CL50)
Relacionados con el ser humano
Sistemas de acuicultura
Perfiles de acuicultura
Razas
Ciguatera cases
Sellos, monedas, varios
Sistemas de acuicultura
Perfiles de acuicultura
Razas
Ciguatera cases
Sellos, monedas, varios
Herramientas
Libro electrónico | Guía de campo | Claves de identificación | Asistente para frecuencias de tallas | Herramienta de ciclo de vida | Mapa de puntos |
Catch-MSY |
Informes especiales
Comprobar el mantenimiento del acuario | Buscar fichas sobre especies | Consulte las hojas informativas sobre acuicultura
Descargar XML
Fuentes de Internet
AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: Género, Especie | DiscoverLife | ECOTOX | FAO - pesquerías: perfil de la especie, landings search; Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | Bases de datos nacionales | OceanAdapt | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | RFE Identification | Socotra Atlas | TreeBase | Árbol de la vida | Wikipedia: Go, búsqueda | World Records Freshwater Fishing | Zoobank | Expediente Zoológico
Estimaciones basadas en modelos
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Índice de diversidad filogenética (Referencia 82804) |
PD50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.00631 (0.00550 - 0.00723), b=3.03 (2.99 - 3.07), in cm total length, based on LWR estimates for this species (Ref. 93245). |
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Nivel trófico (Referencia 69278) |
3.6 ±0.1 se; based on diet studies. |
| Generation time | 6.5 (3.6 - 7.8) years. Estimated as median ln(3)/K based on 25 growth studies. |
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Resiliencia (Referencia 120179) |
Bajo, población duplicada en un tiempo mínimo de 4.5-14 años (Musick et al. 2000 (Ref. 36717); tmax = 28). |
| Rate of population increase | Prior r = 0.29, 95% CL = 0.19 - 0.44, Based on 16 full stock assessments. |
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Vulnerabilidad pesquera (Ref. 59153) |
High vulnerability (59 of 100). 🛈 |
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Vulnerabilidad climática (Ref. 125649) |
High vulnerability (55 of 100). 🛈 |
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Categoría de precios (Ref. 80766) |
Low. |
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Nutrientes (Ref. 124155) |
Calcium = 12 [8, 19] mg/100g; Iron = 0.185 [0.122, 0.296] mg/100g; Protein = 16.5 [15.1, 17.9] %; Omega3 = 0.337 [0.159, 0.741] g/100g; Selenium = 14.5 [5.7, 33.5] μg/100g; VitaminA = 11.2 [2.0, 57.3] μg/100g; Zinc = 0.445 [0.340, 0.563] mg/100g (wet weight); based on nutrient studies. |