Common names from other countries
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Scombriformes (Mackerels) >
Scombridae (Mackerels, tunas, bonitos) > Scombrinae
Etymology: Euthynnus: Greek, eu = good + Greek, thynnos = tunna (Ref. 45335).
Environment: milieu / climate zone / تغييرات عمق / distribution range
بوم شناسي
دريايي pelagic-oceanic; اقیانوس رو (Ref. 51243); تغييرات عمق 0 - 40 m (Ref. 5227). Tropical; 39°N - 16°S, 128°W - 77°W (Ref. 168)
Eastern Pacific: off San Simeon, California, USA southward to the Galapagos Islands and northern Peru. Two stray specimens collected in the Hawaiian Islands.
Size / Weight / سن
بلوغ: Lm ? range ? - ? cm
Max length : 84.0 cm FL جنس نر / بدون خواص جنسي; (Ref. 168); common length : 60.0 cm FL جنس نر / بدون خواص جنسي; (Ref. 9340); بيشينه وزن گزارش شده: 9.1 kg (Ref. 168)
خارهاي باله پشتي (کل) : 10 - 15; شعاع نرم باله مخرجي: 11 - 12; مهره ها: 37. Anterior spines of first dorsal fin much higher than those mid-way, giving the fin a strongly concave outline. Interpelvic process small and bifid. Body naked except for corselet and lateral line. Swim bladder absent. A large rounded protuberances on 31st and 32nd vertebrae. Color is generally iridescent blue with black dorsal markings composed of 3 to 5 horizontal stripes. Also with variable black or dark gray spots above the pelvic fins. Occasionally with extensive longitudinal stripes of light gray on belly; some individuals have few or no belly markings.
Body shape (shape guide): fusiform / normal; Cross section: oval.
Occurs rarely where surface temperatures fall below 23°C. Its larvae are more frequently encountered at temperatures above 26°C and are practically confined to waters within about 240 miles off the mainland. Inhabits near the surface of coastal waters and offshore waters (Ref. 11035). Form multi-species schools with Thunnus albacares and Katsuwonus pelamis. An opportunistic predator which shares feeding pattern with other tunas and probably compete for food with other species such as yellowfin tuna, common dolphin, oriental bonito, among others.
Life cycle and mating behavior
بلوغ | تولید مثل | تخم ریزی | تخم ها | Fecundity | توزاد ( لارو)
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)
وضعيت در فهرست قرمز IUCN (Ref. 130435: Version 2025-1)
خطر برای انسان ها
Harmless
استفاده انسانی
ماهي گيري – شيلات: ارزش تحاري اندك; ماهي ها ي سرگرم كننده: بله
ابزارها
گزارش های ويژه
بارگيری XML
منابع اينترنتي
Estimates based on models
Preferred temperature (مرجع
123201): 21.3 - 28.6, mean 26 °C (based on 34 cells).
Phylogenetic diversity index (مرجع
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01148 (0.00591 - 0.02229), b=3.08 (2.92 - 3.24), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Trophic level (مرجع
69278): 3.8 ±0.60 se; based on food items.
جهندگی (مرجع
120179): متوسط, كمينه زمان لازم براي دو برابر شدن جمعيت 4/1 – 4/4 سال (Assuming tm=2).
Fishing Vulnerability (Ref.
59153): High vulnerability (57 of 100).
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Climate Vulnerability (Ref.
125649): Very high vulnerability (88 of 100).
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Nutrients (Ref.
124155): Calcium = 23.2 [9.9, 173.5] mg/100g; Iron = 1.96 [0.74, 5.26] mg/100g; Protein = 22.9 [20.8, 24.6] %; Omega3 = 0.187 [0.101, 0.355] g/100g; Selenium = 47.9 [25.5, 98.2] μg/100g; VitaminA = 17.8 [4.2, 71.6] μg/100g; Zinc = 0.585 [0.293, 2.306] mg/100g (wet weight);
