The tuna

ATLANTIC BLUEFIN TUNA

The Alboran Sea, is the part of the Mediterranean that stretches between the Strait of Gibraltar and Almeria (Spain) to Morocco. This is an area of strong sea currents due to the fact that the Strait of Gibraltar unites the Mediterranean Sea and the Atlantic Ocean. In it is located the traditional nets networks known as almadrabas (a kind of labyrinth of nets placed in the trajectory of the tuna, usually near the coast, that are closed little by little in order to corralate the fish and later to capture them of form Individual with harpoons of sailboats near the net) in the province of Cadiz and Almeria. This is an area of strong sea currents due to the fact that the Strait of Gibraltar unites the Mediterranean Sea and the Atlantic Ocean with different temperatures every month of the year. The bluefin tuna (Thunnus thynnus) is fished in these traditional nets during the course of their migration along the coasts of the Strait of Gibraltar in search of the warm waters of the Mediterranean. Bluefin tuna begins to reach adulthood in about 4 or 5 years, and adults (over 10 years) spawn in the Gulf of Mexico and the Mediterranean Sea. Females between 270 kg and 300 kg produce at least 10 million eggs in a single season. Larger specimens can measure up to 3 m in length and weigh more than 700 kg. Those that spawn in the Mediterranean are caught in the nets as they pass through the strait on their migratory route, and also in Almeria and other areas of the east coast of the Iberian Peninsula (Murcia and Alicante). The flesh of the tuna caught in the net is characterized by being slightly darker and juicier and having a slightly stronger taste than other tuna species. It contains vitamins, minerals and amino acids essential for the body. The consumption of polyunsaturated fatty acids found in tuna fish can contribute to reduce the risk of cardiovascular disease.

ALBACORE

The Cantabrian Sea is situated along the north coast of Spain and the southwest coast of France. Baña 800 kilometers of coast shared by the provinces of A Coruña and Lugo (Galicia); Asturias; Cantabria; Vizcaya and Guipúzcoa (Basque Country); And Labort in France It extends from the point known as Estaca de Bares, in the province of A Coruña, through the mouth of the river Adur, on the coast of the French region of the Landes, near Bayonne. In its most eastern part, along the coast of the Basque Country is called the Bay of Biscay. It is a sea of transition between the cold North Sea and the temperate seas of the tropics, which makes it a suitable place for plant species and cold water animals. From the 1930s the Basque fleet of the bonito took a pulse thanks to the innovation of fishing with live bait, the incorporation of steam and, subsequently, the diesel made this fleet lead the tuna fishery. Albacore (Thunnus Alalunga), also known as northern albacore and bonito when caught in the Cantabrian Sea, is a highly seasonal tuna that is fished in the Cantabrian between June and October, coinciding with the migration of the species from Atlantic waters More temperate (of the Azores), period in which is realized the well-known coastal of the beautiful one. Its characteristics lie in its size, but in its nutritional and gustatory qualities. White tuna, not to be confused with bluefin tuna (Thunnus thynnus), can reach 140 centimeters and can reach 60 kilos in weight. Its pectoral fins extend beyond the end of the second dorsal fin. Are much longer than those of bluefin tuna and their white flesh is softer and tastier than that of other tuna and with a lower percentage of fat than other similar species, which makes their ventrescas (central part of the tuna, scarce and valued ) Are not too fat and therefore a tasty and exceptional delicacy (something that goes in crescendo from mid-June to late July, early August, when their meat is in full equilibrium, prolonging the season until October). Nutritionally speaking it has a high calorie content and is a good source of proteins and essential amino acids (lysine, leucine, methionine, threonine …). Its fat content contains a high amount of omega-3 polyunsaturated fatty acids that play a role in preventing cardiovascular disease and in controlling cholesterol, vitamins A, B, D, E and K, phosphorus, iodine, calcium and potassium. In addition to the Cantabrian, where the bonito is still fishing with cane (an art, since its weight can easily surpass one hundred kilos) is also caught in Galicia, using the traditional fishing gear of the troll or cacta, which guarantees Its exceptional quality and freshness. It is a selective fishing gear that is used mainly for the capture of predatory fish, where it is an exemplary fishing without affecting other species, which consists in dragging the bait with the boat in motion and with live bait rods. In Galicia, Burela stands out (where more than 80% of the catches are landed), but also Cedeira, in Coruña and Vigo in Pontevedra. To recognize the beautiful auctioned in Galician auctioneers these must be labeled with a green badge distributed by the Xunta de Galicia that guarantees its traceability. This label consists of a legend “Faite bonito”, a numerical code (which indicates the port of discharge) and the auction date of each piece, which should have a minimum weight of 1.5 kilos.

Albacore -Thunnus Alalunga-and Atlantic Bluefin Tuna-Thunnus thynnus-are the most relevant of this blue fish family.

About the author

Montse Gonzalez