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Previously, the epidemic in Beijing was repeated, and while many related sources of infection were pointed to the large wholesale market of "Xinfadi" in Fengtai District, Beijing, the cutting board used by the market to cut imported "salmon" was found to contain the virus. This explosive news suddenly spread throughout the country, the major fresh retail stores have removed the "salmon" from the shelves, and even Chengdu, Harbin, Xi'an, Taiyuan and other provinces and cities that are not close to Beijing have also been removed, and the wholesale markets in some areas do not allow meat circulation, and no one in China can eat "salmon".
▲Beijing Fengtai District "Xinfadi" large-scale wholesale market
"Salmon" was shot, is it the culprit? Just like the pandemic at the beginning of the year, bats "carry the pot", whether it is true or false depends on the scientific basis. However, when it comes to the species of "salmon", it really has a certain influence on the world.
"Salmon" does not refer to a specific fish, but a generic name for several species of salmonidae fish, and in China it is not named after the texture of the flesh, but because of the transliteration of salmon in English Salmon. At first, people called the Atlantic salmon "salmon", and later the merchants called the Pacific salmon "salmon" in order to expand the channel, and gradually the types of "salmon" contained more and more.
▲ "Salmon" is a type of salmon
"Salmon" is one of the world's most valuable fish. This fish is amazing, born in freshwater environment, migrated to the sea when it is not old, and then migrated to freshwater to breed, there are more than 300 species in the Atlantic and Pacific Oceans. The fish has fewer scales and spines, the flesh is orange-red, the meat is tender and delicious, the taste is smooth, the fishy taste is less, it can be eaten directly raw, and it can also cook dishes, which is deeply loved by people. According to incomplete statistics worldwide, more than 2.2 million tons of production per year, 1 million tons are consumed by EU countries, 500,000 tons in North America, more than 400,000 tons in Japan, and only 100,000 tons in China.
▲"Salmon" sashimi is delicious in color and taste excellent
China does not produce "salmon", but the most imported seafood eaten in Chinese today is "salmon" and shrimp, and eating "salmon" in some large and medium-sized cities in the mainland is a high-end enjoyment. Not only in China, but also in Japan, since the Norwegian aquaculture "salmon" entered the country in 1986, it has swept the streets and alleys of sushi restaurants, quickly replaced the status of expensive tuna, was made into a variety of sashimi, became a culture of food, and with the Japanese sashimi swept the world, gradually promoted to the world.
▲ "Salmon" is full of treasures
"Salmon" is delicious to eat, but the growth cycle is long, the global supply is insufficient, and some unscrupulous traders have begun to embark on a crooked path. Founded in Massachusetts in 1991 to develop and market enhanced aquaculture, AquaBounty Technologies, a hybrid salmon has been developed through genetically modified technology and has also been approved for farming in Canada and the United States. Approximately 4.5 tonnes of this blend of salmon were sold for the first time to canadian customers in July 2017.
▲ American AquaBounty company publicity map
The company implanted growth hormone gene sequences extracted from Pacific Chinook "salmon" and antifreeze protein gene sequences extracted from ocean cod in the fertilized eggs of Atlantic "salmon", and bred a new "salmon" species from 3 species of fish. This culture method mainly considers the large size of Zinook "salmon", the antifreeze protein in the blood of ocean cod, which not only increases weight, but also improves antifreeze ability, thereby shortening the growth cycle by half compared with normal "salmon".
▲ Genetically modified "salmon" is obviously twice the size of the ordinary
However, many "salmon" enthusiasts question whether it is safe to eat this "salmon" that neither adds any nutrients nor becomes more delicious. Later, the nutritional quality report provided by the company showed that the genetically modified "salmon" had no difference from the Atlantic "salmon" in terms of taste, color, vitamins, minerals, fatty acids, proteins and many other aspects, and the US government also acquiesced to the behavior.
▲ Genetically modified "salmon" and standard Atlantic salmon of the same age (picture from the network)
Although the transgenic "salmon" developed by the American company has been multiplied for several generations, no genetic mutation has occurred, and the quality has not changed badly, but now does not mean that in the future, the reality cannot replace the accident, no one can guarantee that the genetically modified organisms will not mutate in the case of environmental mutations in the future, so the United States does not allow breeding in the mainland, all of which are sent to overseas fattening, and finally processed and transported to the United States for export and sales, and the whole process has established strict protective measures. Avoid genetically modified fish species entering wild waters, of course, the United States will not eat this genetically modified organism in large quantities, just verbal hype.
If there is a day, this genetically modified "salmon" gene mutation may be a disaster for mankind.