Thunnus alalunga, Albacore : fisheries, gamefish
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Thunnus alalunga (Bonnaterre, 1788)

Albacore
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Thunnus alalunga
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分類 / Names 共通名の | 類義語 | Catalog of Fishes(部類, ) | ITIS | CoL | WoRMS | Cloffa

> Scombriformes (Mackerels) > Scombridae (Mackerels, tunas, bonitos) > Scombrinae
Etymology: Thunnus: Greek, thynnos = tunna (Ref. 45335).
More on author: Bonnaterre.

Environment: milieu / climate zone / depth range / distribution range 生態学

; 海; 海洋回遊性 (Ref. 51243); 深さの範囲 0 - 600 m (Ref. 168). Subtropical; 10°C - 25°C (Ref. 168); 60°N - 50°S, 180°W - 180°E

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Cosmopolitan in tropical and temperate waters of all oceans including the Mediterranean Sea but not at the surface between 10°N and 10°S. Western Pacific: range extend in a broad band between 40°N and 40°S (Ref. 9684). Often confused with juvenile Thunnus obesus which also have very long pectorals but with rounded tips. Highly migratory species, Annex I of the 1982 Convention on the Law of the Sea (Ref. 26139).

Length at first maturity / サイズ / 重さ / 年齢

Maturity: Lm 85.0, range 85 - ? cm
Max length : 140 cm FL オス/雌雄の選別がない; (Ref. 3669); common length : 100.0 cm FL オス/雌雄の選別がない; (Ref. 9684); 最大公表体重: 60.3 kg (Ref. 40637); 最大記録サイズ: 9 年 (Ref. 72462)

簡単な記述 形態学 | 形態計測学

背面の脊椎 (合計): 11 - 14; 背鰭 (合計): 12-16; 肛門の骨 0; 臀鰭: 11 - 16. Anterior spines much higher than posterior spines giving the fin a strongly concave outline. Interpelvic process small and bifid. Body with very small scales. Pectoral fins remarkably long, about 30% of fork length or longer in 50 cm or longer fish. Ventral surface of liver striated and the central lobe is largest.

生物学     用語集 (例 epibenthic)

An epipelagic and mesopelagic, oceanic species, abundant in surface waters of 15.6° to 19.4°C; deeper swimming, large albacore are found in waters of 13.5° to 25.2°C; temperatures as low as 9.5°C may be tolerated for short periods (Ref. 168). Known to concentrate along thermal discontinuities (Ref. 168). Form mixed schools with skipjack tuna (Katsuwonus pelamis), yellowfin tuna (Thunnus albacares) and bluefin tuna (T. maccoyii), schools may be associated with floating objects, including sargassum weeds (Ref. 168). Feed on fishes, crustaceans and squids. Eggs and larvae are pelagic (Ref. 6769). Sexual maturity reached at 90 cm (Ref. 36731). Highly appreciated and marketed fresh, smoked, deep frozen or canned. Eaten steamed, broiled, fried and microwaved (Ref. 9987). Also Ref. 1762, 1798, 1804. Angling: Largely caught offshore, where the waters are mild and blue. Albacore favor those areas where cooler water interfaces with warmer water. They are caught with live of dead baitfish such as mullet, sauries, squid, herring, anchovies, sardines, and other small fish. Albacore strike hard and make powerful runs (Ref. 84357).

Life cycle and mating behavior 成熟 | 繁殖 | 放精 | | 生産力 | 幼生

The sex ratio in catches is about 1:1 for immature individuals, but males predominate among mature fishes, which is possibly due to both differential mortality of sexes and differential growth rate after maturity.

主な参考文献 Upload your references | 参考文献 | コーディネーター : Collette, Bruce B. | 協力者

Collette, B.B. and C.E. Nauen, 1983. FAO Species Catalogue. Vol. 2. Scombrids of the world. An annotated and illustrated catalogue of tunas, mackerels, bonitos and related species known to date. Rome: FAO. FAO Fish. Synop. 125(2):137 p. (Ref. 168)

IUCNのレッドリストの状況は (Ref. 125652)

  軽度懸念 (LC) ; Date assessed: 15 January 2021

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless





Human uses

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

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インターネットの情報源

Estimates based on models

Preferred temperature (Ref. 123201): 8.8 - 21.2, mean 15.1 °C (based on 784 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5039   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01820 (0.01490 - 0.02222), b=3.00 (2.96 - 3.04), in cm total length, based on LWR estimates for this species (Ref. 93245).
栄養段階 (Ref. 69278):  4.3   ±0.2 se; based on diet studies.
Generation time: 6.4 (4.8 - 7.8) years. Estimated as median ln(3)/K based on 34 growth studies.
回復力 (Ref. 120179):  手段, 1.4年~4.4年の倍増期間の最小個体群 (K=0.13-0.18; tm=4-6; tmax=10; Fec=2 million).
Prior r = 0.52, 95% CL = 0.34 - 0.78, Based on 7 stock assessments.
Fishing Vulnerability (Ref. 59153):  High to very high vulnerability (71 of 100).
Climate Vulnerability (Ref. 125649):  Moderate vulnerability (42 of 100).
価格帯 (Ref. 80766):   High.
Nutrients (Ref. 124155):  Calcium = 38.9 [21.7, 68.8] mg/100g ; Iron = 4.05 [1.58, 9.45] mg/100g ; Protein = 23.9 [22.5, 25.3] % ; Omega3 = 0.453 [0.298, 0.709] g/100g ; Selenium = 45.2 [15.0, 143.3] μg/100g ; VitaminA = 49.1 [3.5, 566.3] μg/100g ; Zinc = 0.473 [0.262, 0.961] mg/100g (wet weight); based on nutrient studies.