Gadus chalcogrammus, Alaska pollock : fisheries, gamefish

Gadus chalcogrammus Pallas, 1814

Alaska pollock
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Native range | All suitable habitat | Point map | Year 2050
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
画像によって Archipelago Marine Research Ltd.

分類 / 名前 共通名の | 類義語 | Catalog of Fishes(部類, 種) | 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.

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.

環境：環境 / 気候帯 / 深さの範囲 / 分布範囲 生態学

海; 汽水性の 底生の漂泳性; 海洋回遊性 (Ref. 87829); 深さの範囲 0 - 1280 m (Ref. 120982), usually 30 - 590 m (Ref. 120982). Polar; 82°N - 33°N, 9°E - 117°W

分布 領土 | 国連食糧農業機関の区域 | エコシステム | 事件 | 目的のマップ | 導入 | 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.

初回成熟時の長さ / サイズ / 重さ / 年齢

成熟: Lm 36.9  range ? - ? cm
Max length : 91.0 cm TL オス/雌雄の選別がない; (Ref. 2850); 最大公表体重: 3.9 kg (Ref. 56335); 最大記録サイズ: 28 年 (Ref. 55701)

簡単な記述 検索表 | 形態学 | 形態計測学

背面の脊椎 (合計) : 0; 背鰭 (合計) : 38 - 48; 肛門の骨: 0; 臀鰭: 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.

生物学     用語集 (例 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) 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).

ライフサイクルと交尾行動 成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生

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

主な参考文献 参考文献のアップロード | 参考文献 | コーディネーター | 協力者

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)

IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))


CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless





人間の用途

水産業: 高い商業の; ゲームフィッシュ: はい
FAO - 水産業: 種の外形, landings search; Publication: search | FishSource | 私達の周りの海

より多くの情報

養殖生態
食料品（獲物）
餌の構成
摂食量
食料配給
捕食動物
生態学
生態学
人口動態
成長のパラメーター
最大年齢/サイズ
長さ-重量比。
長短関係。
体長組成
質量変換
補充
豊度
ライフサイクル
繁殖
成熟
成熟度／エラ
生産力
放精
産卵群
卵
卵の開発
幼生
幼生の動力
分布
領土
国連食糧農業機関の区域
エコシステム
事件
導入
BRUVS - ビデオ
解剖学
カマ
脳
オトリス
生理学
体組成
栄養素
酸素消費
水泳タイプ
泳ぐ速さ
視覚色素
フィッシュ・サウンド
病気と寄生虫
毒性（LC50）
遺伝子の
ゲノム
遺伝子の
ヘテロ接合性
遺伝
遺伝的多様性
人間関係
養殖システム
水産養殖の紹介
緊張
シガテラ症例
切手、コイン、その他
アウトリーチ
協力者
分類学
共通名の
類義語
形態学
形態計測学
画像
参考文献
参考文献

用具

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インターネットの情報源

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: 部類, 種 | DiscoverLife | ECOTOX | FAO - 水産業: 種の外形, landings search; Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | 国のデーターベース | OceanAdapt | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | RFE Identification | Socotra Atlas | TreeBase | 生命の木 | Wikipedia: 行く, 検索する | World Records Freshwater Fishing | Zoobank | 動物に関する記録

モデルに基づく推定値

系統多様性指数
(参照 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).
栄養段階
(参照 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.
回復力
(参照 120179) 		低い, ４．５年～１４年の倍増期間の最小個体群 (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.
漁業の脆弱性
(Ref. 59153) 		High vulnerability (59 of 100). 🛈
気候脆弱性
(Ref. 125649) 		High vulnerability (55 of 100). 🛈
価格帯
(Ref. 80766) 		Low.
栄養素
(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.