Definition of
Tuna
Tuna is a term that came to our language after an extensive etymological journey. It comes from the Hispanic Arabic tunawhich derives from classical Arabic tunen. This word, in turn, comes from the Latin thunnuswhose origin is found in the Greek thýnnos.
Tuna is called a gender of teleost fish: that is, they have a fully ossified skeleton. He common tunaalso called Red tunais the species whose scientific name is Thunnus thynnus.
- Tuna characteristics
- some varieties
- Tuna in human nutrition
- Its inclusion in the diet
- Related Topics Tree
Tuna characteristics
Beyond the differences according to the species, tunas share traits. They are saltwater fish that are part of the group of acanthopterigians since their unpaired fins, or all of them, have spiny rays without articulation.
In general, the tuna has a length of about three meters. These animals they are silvery or gray below, while the upper sector of their body is bluish or black.
The tunas are migratory species. They can travel up to 50 kilometers per day, in some cases even swimming in a depth of 400 meters.
It can help you: Ichthyology
some varieties
We said to Thunnus thynnus it is known as common tuna, Red tuna either blue fin tuna. Specimens of this species can weigh more than 600 kilograms and, having the ability to increase their temperature body, they can live in very cold waters.
In subtropical and tropical seas we can find the albacore tuna, light tuna either yellowfin tuna (Thunnus albacares). He blackfin tuna (Thunnus atlanticus), he eastern bluefin tuna either bighorn tuna (Thunnus orientalis) and the southern bluefin tuna (Thunnus maccoyii) are others varieties of this genre.
See also: Body
Tuna in human nutrition
Every year millions of tons of tuna are caught worldwide. The meat of this fish is highly appreciated, either fresh or canned.
In the case of fresh tuna, it can be prepared in different ways. He sorropotún either marmitakoby example, is a stew that is made with white tuna, tomato, pepper, onion and potatoes (potatoes). He cebiche either Cevichemeanwhile, it can be made with tuna marinated in a citrus dressing, while for the sushi You can also resort to this fish. Another popular option in various regions is grilling fresh tuna.
With the blizzard (the meat located near the belly, in the lower area of the fish), is usually made tuna with onion. The ventrasca is also used in the so-called sand tunawhich is generally performed at the iron.
In any case, the most common thing is that the tuna is consumed canned. In this case, the meat of the fish is cut into pieces or shredded, subjected to a cooking process and canned with salt as a preservative. It can be natural tuna (in water) or in oil.
Continue on: Iron
Its inclusion in the diet
Thanks to the content of iron, Omega-3 fatty acids and proteins, including tuna in the diet provides health benefits. It can contribute to cardiovascular function and tissue repair.
However, it must be borne in mind that canned tuna usually includes a high amount of saltwhich can be detrimental to the people who have hypertension. In addition the purines may affect those with gout or hyperuricemia.
See also: Hemp