Introduction: Introduced 40 years ago, it is regarded as high protein, and it is farmed on a large scale in the south, and now it is flooded and no one eats
When it comes to invasive species, as long as it can eat, there is basically no great threat in China. Because our food culture is broad and profound, and there are many artificial, the food that can be eaten will be made into a variety of delicacies to eat, and the more typical in this regard is the crayfish. In many countries, it is a flood of "invasive species", but in our country it is enough to rely on farming, and it is also the case with Egyptian bearded catfish and bullfrogs.
However, there are also a very small number of invasive species, and even foodies in china can't do anything about it. Fushou snail, which was introduced to China 40 years ago, is such a creature, which was originally used as a high-protein food and promoted as a special breed in the south, and now many places in the south have been flooded, but no one eats it.
<h1 class="pgc-h-arrow-right" data-track="4" > the science of Fushou snail</h1>
Just like there were no wild boars in the United States before, although there were many types of snails in China, there was no Fushou snail before, until 1981, when a Brazilian Chinese introduced it to Zhongshan for breeding, which opened the history of Fushou snails in China.
Fushou snail, also known as the large bottle snail, is a bottle snail family, bottle snail mollusk, native to the tropical and subtropical regions of Central America, such as Argentina, Brazil and Paraguay. Don't look at it and China's snails look like twin brothers, it is not a relative of snails abroad. China's field snail is a mollusk of the field snail family and snail genus, so the two have nothing to do with each other.
Although the Fushou snail looks very similar to the Field Snail, it has a spiral-like shell, but the difference is also large, that is, its head will have two pairs of antennae, the front antennae are short, the posterior antennae are long, and the base of the posterior antennae has an eye on the outside.
It likes to move in the water with fresh water quality and sufficient feed, but it is very adaptable, and it can also grow and reproduce in sewage, and it is a very heterogeneous animal, not only likes to eat duckweed, vegetables, melons and fruits, especially sweet food, but also eats meat, that is, the carrion of animals in the water is also their favorite.
<h1 class="pgc-h-arrow-right" data-track="9" > introduced into China as a high-protein food</h1>
At present, Fushou snail is an invasive species known to everyone and is also an invasive agricultural alien alien organism with significant dangers announced by the Ministry of Agriculture. But in the beginning, it was a very delicious food.
As early as 1979, someone from Argentina introduced Fushou snails to Taiwan for breeding, and the purpose was very simple, that is, to eat. Later, it was found that it had a poor taste and poor market acceptance, so it was abandoned and bred in large quantities in the wild.
Two years later, in 1981, a Brazilian Chinese introduced Fushou snail to Zhongshan, Guangdong Province, for breeding because of its high protein content and was regarded as a high-protein food. At that time, because it was recognized by the market, in 1984, Fushou snail was also promoted and planted in Guangdong Province as a special breeding object. And because of the good economic benefits, the market is very popular, so it was quickly promoted to Guangxi, Fujian, Sichuan, Yunnan and Zhejiang and other provinces.
After a few years, because there were more fushou snails, it was not as popular in the market as before, so it was abandoned in the wild in large quantities, so it multiplied everywhere and invaded many southern provinces.
<h1 class="pgc-h-arrow-right" data-track="14" > why is the Fushou snail flooded? </h1>
Some people say that the main reason why Fushou snails are flooded is because their vitality is too tenacious, especially their reproductive ability is amazing.
Fushou snail's diet is very mixed, basically not very picky about food, many crops and aquatic plants are their food objects, and the water quality requirements are not high, the vitality is extremely strong.
Of course, the most frightening thing is their ability to reproduce, which is a hermaphroditic animal, and when the egg-laying season comes, the male and female snails will twist together to mate. When the conch lays eggs, it will crawl out of the water and lay the eggs on the surface of the water, or wooden stakes, stones, bricks, etc. The eggs of the snails are red, and they are very cunning, do not lay eggs in the same place, generally divided into 10-30 egg blocks, and one egg block contains 100-500 eggs, which shows how terrible its reproductive ability is.
In fact, before china, there were still many places where there was a habit of eating Fushou snail, and it was also a common delicacy on the market. It wasn't until 2006 that Fushou snail was completely kicked out of the list of edible foods. Prior to this, although there were some places that did not eat Fushou snails, most of them chose to eat snails and field snails, but after experiencing a large incident of Fushou snail infection parasites in Beijing in 2006, dozens of people were recruited, and even some people suffered permanent brain damage. Therefore, Fushou snail was completely infamous and reduced to "food that could not be eaten".
It is also from this that no one eats Fushou snail anymore, and there is no natural enemy, the reproductive ability is very strong, so it has flooded in many places, especially in the first two years of Yunnan Erhai is the flood of Fushou snail, causing great harm to the local ecological environment, in order to eliminate Fushou snail, the local even reward for catching Fushou snail, 1 kg of price up to 20 yuan.
<h1 class="pgc-h-arrow-right" data-track="20" > the hazards of Fushou snail</h1>
As an invasive species, Fushou snail not only carries a large number of parasites, but also becomes a carrier of diseases and parasites, and if it is not cooked, it will pose a great threat to health, mainly a kind of posterior strong nematode can cause meningitis, and it is also the intermediate host of The curling spiny mouth fluke and Guangzhou tube strong nematode, which is very harmful to human health.
Moreover, Fushou snails will also cause great harm to a variety of aquatic crops such as rice, russet, taro, water chestnut, diamond horn, hollow cabbage and mustard. It threatens the diversity of local organisms and causes great damage to the local ecology.
Now it is the breeding season of Fushou snails, in some ponds, ditches and river edges, plants will see the red Eggs of Fushou Snails, if you have the conditions to destroy them as much as possible, in the right conditions as long as 8 days or so will hatch. And when eating snails and field snails in the wild, we must also be vigilant, know how to identify, and must not eat raw or unripe Fushou snails.