>
Scombriformes (Mackerels) >
Scombridae (Mackerels, tunas, bonitos) > Scombrinae
Etymology: Thunnus: Greek, thynnos = tunna (Ref. 45335).
Eponymy: Sir Frederick McCoy (1817–1899) was an Irish paleontologist and naturalist. [...] (Ref. 128868), visit book page.
More on author: Castelnau.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
marina pelagic-oceanic; havsvandrande (Ref. 71039); djupintervall 0 - 2743 m (Ref. 57178). Temperate; 5°C - 20°C (Ref. 168); 10°S - 60°S, 180°W - 180°E (Ref. 54921)
Atlantic, Indian and Pacific: temperate and cold seas, mainly between 30°S and 50°S, to nearly 60°S. During spawning, large fish migrate to tropical seas, off the west coast of Australia, up to 10°S. Highly migratory species. If the current exploitation continues, the population will be below 500 mature individuals in 100 years (Ref. 27905).
Längd vid första mognad / Storlek / Vikt / Ålder
Könsmognad: Lm 122.0, range 120 - 130 cm
Max length : 245 cm FL hane/ej könsbestämd; (Ref. 5203); common length : 160 cm FL hane/ej könsbestämd; (Ref. 9684); publicerad maxvikt: 260.0 kg (Ref. 5203); rapporterad maxålder: 20 år (Ref. 168)
Ryggkotor: 39. A very large species, deepest near the middle of the first dorsal fin base. Swim bladder present. Lower sides and belly silvery white with colorless transverse lines alternating with rows of colorless dots. The first dorsal fin is yellow or bluish; the anal fin and finlets are dusky yellow edged with black; the median caudal keel is yellow in adults.
Body shape (shape guide): fusiform / normal; Cross section: oval.
By maturity, most southern bluefin tuna lead an oceanic, pelagic existence (Ref. 6390). Spawning fish and larvae are encountered in waters with surface temperatures between 20° and 30°C. An opportunistic feeder, preying on a wide variety of fishes, crustaceans, cephalopods, salps, and other marine animals. Mostly canned (Ref. 9684). A specialized fishery for sashimi-quality has been developed recently by New Zealand fishers. In Japan, it is highly prized for the sashimi markets.
It is not known whether all mature fish spawn each year, every few years, or even only once in their lifetime (Ref. 30320).
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)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
Fiskeri: kommersiell; Vattenbruk: kommersiell; sportfisk: ja
Verktyg
Särskilda rapporter
Ladda ner XML
Internet-källor
Uppskattningar baserade på modeller
Önskad temperatur (Ref.
123201): 2.5 - 7.9, mean 5 °C (based on 439 cells).
Index för fylogenetisk mångfald (Ref.
82804): PD
50 = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01288 (0.01070 - 0.01552), b=3.03 (3.00 - 3.06), in cm total length, based on LWR estimates for this species (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.9 ±0.53 se; based on food items.
Resiliens (Ref.
120179): Låg, lägsta populationsfördubblingstid 4,5-14 år (K=0.14-0.15; tm=8-9; tmax=20; Fec=14 million).
Prior r = 0.27, 95% CL = 0.18 - 0.41, Based on 1 full stock assessment.
Sårbarhet i fisket (Ref.
59153): High to very high vulnerability (67 of 100).
🛈
Sårbarhet för klimatet (Ref.
125649): Moderate vulnerability (38 of 100).
🛈
Näringsämnen (Ref.
124155): Calcium = 9.89 [5.80, 19.12] mg/100g; Iron = 0.922 [0.355, 2.441] mg/100g; Protein = 23.2 [21.7, 24.6] %; Omega3 = 0.74 [0.44, 1.24] g/100g; Selenium = 31.2 [8.4, 97.4] μg/100g; VitaminA = 22 [3, 199] μg/100g; Zinc = 0.245 [0.131, 0.490] mg/100g (wet weight);