分類 / Names
共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
Environment: milieu / climate zone / depth range / distribution range
生態学
海; 海洋回遊性; 深さの範囲 0 - 260 m (Ref. 9340), usually 0 - ? m (Ref. 55287). Tropical; 15°C - 30°C (Ref. 168); 63°N - 47°S, 180°W - 180°E
Cosmopolitan in tropical and warm-temperate waters. Not found in the Black Sea. Highly migratory species,
Length at first maturity / サイズ / 重さ / 年齢
Maturity: Lm 41.3, range 40 - 45 cm
Max length : 110 cm FL オス/雌雄の選別がない; (Ref. 89423); common length : 80.0 cm FL オス/雌雄の選別がない; (Ref. 168); 最大公表体重: 34.5 kg (Ref. 168); 最大記録サイズ: 12 年 (Ref. 168)
背面の脊椎 (合計): 14 - 16; 背鰭 (合計): 14-15; 肛門の骨 0; 臀鰭: 14 - 15; 脊つい: 41. This species is distinguished by the following characters: body fusiform, elongate and rounded; teeth small and conical, in a single series; gill rakers on first gill arch numerous, 53-63; D1 XIV-XVI, dorsal fins separated by a small interspace (not larger than eye), the second followed by 7-9 finlets; anal fin followed by 7-8 finlets; pectoral fins short, with 26-27 rays; 2 flaps (interpelvic process) between pelvic fins; body scaleless except for corselet and lateral line; a strong keel on each side of caudal-fin base between 2 smaller keels. Colour of back dark purplish blue, lower sides and belly silvery, with 4-6 very conspicuous longitudinal dark bands which in live specimens may appear as discontinuous lines of dark blotches (Ref. 9684).
Found in offshore waters; larvae restricted to waters with surface temperatures of 15°C to 30°C (Ref. 6390). Exhibit a strong tendency to school in surface waters with birds, drifting objects, sharks, whales and may show a characteristic behavior like jumping, feeding, foaming, etc. Feed on fishes, crustaceans, cephalopods and mollusks; cannibalism is common. Spawn throughout the year in the tropics, eggs released in several portions (Ref. 35388). Eggs and larvae are pelagic (Ref. 6769). Preyed upon by large pelagic fishes (Ref. 6885). Also taken by trolling on light tackle using plugs, spoons, feathers, or strip bait (Ref. 9684). Marketed fresh, frozen or canned (Ref. 9340, 9684 ); also dried-salted and smoked (Ref. 9987).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
In tropical waters, reproductively active female skipjack tuna spawn almost daily.
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)
人間に対する脅威
Reports of ciguatera poisoning (Ref. 4690)
Human uses
水産業: 高い商業の; ゲームフィッシュ: はい
用具
特記事項
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インターネットの情報源
Estimates based on models
Preferred temperature (Ref.
123201): 13.3 - 29, mean 26.2 °C (based on 8934 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01072 (0.00955 - 0.01202), b=3.10 (3.07 - 3.13), in cm total length, based on LWR estimates for this species (Ref.
93245).
栄養段階 (Ref.
69278): 4.4 ±0.5 se; based on diet studies.
Generation time: 2.1 (1.8 - 2.4) years. Estimated as median ln(3)/K based on 57
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=0.3-0.5; tm=2-3; tmax=12; Fec=61,516).
Prior r = 0.57, 95% CL = 0.37 - 0.85, Based on 7 stock assessments.
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (38 of 100).
Climate Vulnerability (Ref.
125649): Moderate vulnerability (41 of 100).
Nutrients (Ref.
124155): Calcium = 155 [39, 307] mg/100g; Iron = 2.27 [0.81, 7.03] mg/100g; Protein = 22.3 [20.8, 23.6] %; Omega3 = 0.45 [0.22, 1.05] g/100g; Selenium = 87.4 [31.2, 237.6] μg/100g; VitaminA = 6.64 [1.25, 40.76] μg/100g; Zinc = 1.54 [0.37, 3.23] mg/100g (wet weight); based on
nutrient studies.
