Katsuwonus pelamis  (Linnaeus, 1758)

Skipjack tuna
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Image of Katsuwonus pelamis (Skipjack tuna)
Katsuwonus pelamis
Male picture by Freitas, R.

التصنيف / Names الأسماء الشائعة | مرادفات | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

شعاعيات الزعانف > Perciformes (Perch-likes) > Scombridae (Mackerels, tunas, bonitos) > Scombrinae

البيئة / مناخ / المدى البيئة

; بحري; محيطية; نطاق العمق 0 - 260 m (Ref. 9340), usually 0 - ? m (Ref. 55287).   Tropical; 15°C - 30°C (Ref. 168), preferred 27°C (Ref. 107945); 63°N - 47°S, 180°W - 180°E

التوزيع دول | مناطق الفاو | النظام البيئي | الظهور | Point map | مقدمة | Faunafri

Cosmopolitan in tropical and warm-temperate waters. Not found in the Black Sea. Highly migratory species, Annex I of the 1982 Convention on the Law of the Sea (Ref. 26139).

Length at first maturity / الحجم / وزن / العمر

Maturity: Lm 40.0, range 40 - 45 cm
Max length : 110 cm FL ذكر/ مختلط الجنس; (Ref. 89423); common length : 80.0 cm FL ذكر/ مختلط الجنس; (Ref. 168); أعلا وزن تم نشرة: 34.5 kg (Ref. 168); العمر: 12 سنين (Ref. 168)

وصف مختصر الوصف الخارجي | قياسات المظهر الخارجي

الأشواك الظهرية (المجموع): 14 - 16; الأشعة الظهرية الناعمة (المجموع): 14-15; شوكة شرجية 0; أشعه شرجية لينه: 14 - 15; فقرات: 41. Interpelvic process small and bifid. Body without scales except for the corselet and the lateral line. Swim bladder absent. The back is dark purplish blue, lower sides and belly silvery, with 4 to six very conspicuous longitudinal dark bands which in live specimens may appear as continuous lines of dark blotches.

أحياء     المصطلحات (على سبيل المثال epibenthic)

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); also dried-salted and smoked (Ref. 9987).

Life cycle and mating behavior النضج | التكاثر | وضع البيض | بيض | الخصوبة | Larvae

In tropical waters, reproductively active female skipjack tuna spawn almost daily.

المرجع الرئيسي Upload your references | مراجع | المنظم : Collette, Bruce B. | المتعاونين

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 Red List Status (Ref. 115185)

CITES (Ref. 94142)

Not Evaluated

خطر للأنسان

  Reports of ciguatera poisoning (Ref. 4690)




استخدامات بشرية

مصائد: ذو قيمة تاجرية عالية; لعبة سمكه: نعم

أدوات

تقارير خاصة

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مصادر علي الأنترنت

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01072 (0.00952 - 0.01207), b=3.12 (3.09 - 3.15), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
مستوى غذائي (Ref. 69278):  4.4   ±0.5 se; Based on diet studies.
المرونه (Ref. 69278):  وسيط, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع 1.4-4.4 سنة (K=0.3-0.5; tm=2-3; tmax=12; Fec=80,000).
Prior r = 0.82, 2 SD range = 0.36 - 1.84, log(r) = -0.2, SD log(r) = 0.41, Based on: 5 M, 50 K, 3 tgen, 2 tmax, 4 Fec records
عرضة للخطر (Ref. 59153):  Moderate vulnerability (40 of 100) .
فئة السعر (Ref. 80766):   High.