Tuna nutrition facts

In Tuna

Tuna nutrition facts

It receives the name bluefin tuna or cimarron. It is a bony fish, of the family of scombrids. It is a blue fish, tuna, being the largest tuna. It is widely distributed throughout the Atlantic, the Mediterranean Sea and the Black Sea.

Thunnus thynnus tuna

(Eng) Northern bluefin tuna

(Fr) Thon rouge du Nord

Weight 6.4 kg. – 600 kg. Dimensions 40 cm. – 4 meters

Main description
Regulates its temperature between 18º and 25º C. Lives above 25 years. Their breeding season lasts around 50 days and they have a laying of approximately 45,000,000 eggs, of which a great majority are spoiled by predators.

It differs from the rest of the tunas in that its pectoral fin is the shortest, in contrast to the other tuna most known in Spain, the albacore tuna or albacore tuna.

 

Curiosities
Japan is the main destination of Mediterranean bluefin tuna. As the catches are insufficient, a cultivation technique has been developed that consists of the capture by means of purse seine fleets, in which even small planes can be used. Later in the farms, located mostly in the Murcia region, fattening and greasing stages are carried out. To learn more about this topic, read the following article by F. Aguado Jiménez at panoramicaacuicola.com.
This species is being caught in an abusive manner. In recent years this has reduced the adult population by 80% as well as reducing the size of the specimens considerably. To learn more about this topic, read the following Greenpeace article.

In Japan, the cycle of artificial reproduction of bluefin tuna has been completed. For the first time, this species has been bred in a specimen, although its application today still requires many more phases of development and study. An Australian company has developed the first artificial propagation plan for bluefin tuna, an endangered species. It is a very migratory species, in continuous displacement.

The normal cycle takes place in the month of June where from the Atlantic it goes to the Mediterranean Sea to spawn, to later return.

Record catch of bluefin tuna: although there are mid-twentieth century catches of 800 kg specimens, the largest bluefin tuna caught under the rules of the International Association of Sportfishing (IGFA) weighed 678.6 kg (1,496 pounds). It was caught by Ken Fraser on 10/26/1979 in Aulds Cove, Nova Scotia (Canada).
Ronqueo of the tuna: to the process of quartering of the part of the tuna is called ronqueo. It distinguishes between the noble parts and internal parts. To learn more about this topic you can read the following article by Surf Casting Cádiz.

When a predatory fish sees a “Shoal” (school of fish) they join and surround the Shoal and push it to the surface where they are attacked by seabirds and the predatory fish themselves. The Shoal is a defense tactic of fish such as Sardine.

Sensational street video about the trap.

Nutritional value
Type Per 100g
Energy (Kcal) 144
Proteins (g) 23.3
Carbohydrates (g) <1
Fiber (g) 0,0
Total fat (g) 4.9
Saturated (g) 1,3
Monounsaturated (g) 1.6
Polyunsaturated (g) 1,4
Omega 3 (g) 1.0
Cholesterol (mg) 38
Minerals
Calcium (mg) 8.0
Iron (mg) 1.0
Zinc (mg) 0.6
Sodium (mg) 39
Potassium (mg) 252
Vitamins
Vitamin A (μg) 16
Vitamin B3 (μg) 8.7
Vitamin B9 (μg) 2.0
Vitamin B12 (μg) 9,4
Vitamin E (μg) 1.0

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