Environment: milieu / climate zone / depth range / distribution range
экология
морской; мигрирует в океане; пределы глубины 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 / Size / Вес / Возраст
Maturity: Lm 41.3, range 40 - 45 cm
Max length : 110 cm FL самец/пол неопределен; (Ref. 89423); common length : 80.0 cm FL самец/пол неопределен; (Ref. 168); наибольший вес (опубликованные данные): 34.5 kg (Ref. 168); наибольший возраст (опубликованны данные): 12 годы (Ref. 168)
колючие лучи спинного плавника (общее число): 14 - 16; членистые (мягкие) лучи спинного плавника (общее число): 14-15; колючие лучи анального плавника 0; членистые (мягкие) лучи анального плавника: 14 - 15; позвонки: 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).
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)
Статус Красного Списка МСОП (Ref. 130435)
Угроза для людей
Reports of ciguatera poisoning (Ref. 4690)
Использование человеком
рыболовство: важный объект промысла; объект спортивного рыболовства: да
дополнительная информация
инструменты
Специальные отчеты
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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).
Trophic level (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.
устойчивость к внешним воздействиям (Ref.
120179): средний (среднего размера), минимальное время удвоения популяции 1.4-4.4 года (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.
