Someone asked me a question: Before the crayfish invaded China, were there any similar creatures in China?
The answer is yes.
In China's Great Northeast, there is such a creature, it and the crayfish look very similar, the meat is very good, the taste is also very delicious. It's just that the current market sells for 200 yuan a pound and there is no market, because it is on the verge of extinction and rare.
Chinese love to eat crayfish, and the crayfish they eat every summer is tens of thousands of tons. Their tiny bodies tumble back and forth in the pots of Chinese chefs, contaminated with all kinds of flavors, and become regular customers at the tables of people in the streets and alleys. Therefore, many people do not believe that crayfish will flood, after all, in the eyes of Chinese, as long as it is edible and delicious, it can be solved by eating.
Not really. Crayfish are known as the most successful invasive alien species because of their strong ability to survive and reproduce. Whether it is a high temperature of 30 degrees Celsius above zero or a low temperature of -14 degrees Celsius, crayfish can always adapt to the environment and live well. Not only is it temperature adaptable, but crayfish are also very tolerant of water quality. They can live in stinky ditches rich in heavy metals, and they can live in drainage ditches along rice paddies.
Their strong survivability and reproductive ability allowed them to quickly gain a foothold after invading China, laying down one piece after another. And because of the large number of people's consumption, the merchants saw its economic value and began to carry out large-scale farming in various places.
The meat quality of wild crayfish is affected by the living environment, and the quality is uncontrollable, but the quality of farmed crayfish is much more stable. A large number of farming has caused more and more crayfish to increase, and the wild crayfish are gradually no longer eaten, and we basically farm crayfish on the daily table. It's just that although the living conditions of crayfish in the wild are difficult, they still reproduce quickly.
So that after the crayfish landed in Nanjing in the 1930s, they soon invaded the middle and lower reaches of the Yangtze River such as Hubei, Jiangsu and Anhui at an alarming speed.
Crayfish breed upstream along the Yangtze River, and terraces in Yunnan are also being planted. They like to punch holes, so that the terraces become full of holes, can not save water and can not grow crops, which also triggered the local "shrimp war" in Yunnan for many years, and ended with the failure of humans, so far the crayfish in Yunnan has not been effectively solved, flooding.
So the question is, since crayfish are invasive species and are still so popular, is there no creature that can compete with crayfish in the vast land of China?
Of course, there are, but many southerners have not seen it, and the "crayfish" native to China are distributed in northeast China, and their names are called là gǔ.
Also known as the big-headed shrimp and the northeast crayfish, it is an arthropod of the genus Crawfish (River Shrimp Family), which is very similar to the crayfish, but smaller than the crayfish, the two large pliers are more like crab claws, and the first 3 pairs of footlets have a jaw.
They are found in the northeast and are found in the Songhua, Tumen and Yalu rivers, which are native Chinese shrimp. In the 1950s and 1960s, the family was also prosperous and numerous. But this crawfish has a characteristic, that is, the requirements for water quality are extremely harsh, and a little pollution will also lead to their mass death, and now they can only be found occasionally in the stone crevices of mountain streams. The older generation once said that there are waters with cockroaches, which means that the water there can be drunk directly.
With the use of various pesticides and the pollution of water quality brought about by the process of urbanization, as well as people's uncontrolled fishing, the cockroach has become extinct in many rivers in China, and today's young people will not have the opportunity to see this northeast crayfish if they do not grow up in the northeast.
Not long ago, the Food and Drug Ring Investigation Brigade of the Nenjiang City Public Security Bureau cracked a case of illegal fishing, and the criminal suspects Li Mou, Jiang Mou, and Hou Mou used flower baskets, ground cages, and household nets to illegally catch more than 370 kilograms of cockroaches in the local area. But the three were caught not because the caddipillars were state-protected animals, but because their near-extinct fishing practice was illegal. If the fewer and fewer caddisflies are allowed to continue to be caught in this way, sooner or later they will become protected animals.
The three men caught 370 pounds, and apparently their target was the cockroaches. Delicious meat, rich in protein and astaxanthin, it has been a delicacy in Northeast China since ancient times. With the huge impact of human activities on the environment and uncontrolled food fishing, the price of this native crawfish has risen repeatedly, and the market price can sell for 200 yuan a catty, and it is often priceless.
In order to catch a large number of rapid and large quantities, people abuse permethrin pesticides to catch, which is the so-called "shrimp catcher". This drug works quickly, but the damage it brings is also extinct, whether it is caught or not, the water quality is polluted and they cannot survive.
According to some netizens, they can still be seen in the Kuandian Mountain in Dandong, and the number is only a few.
People catch the cockroaches, like crayfish braised to eat, some people grind it filter residue and then flush it into boiling water, boiled into egg flower-like soup, named Lagu tofu, although there is a tofu appearance, but not tofu, the taste is very tender.
Finally, I would like to say a few things:
1, although the cockroach is not yet a protected animal, but the number has been large-scale reduction, since the farmed crayfish is cheap and delicious, please do not go fishing for cockroaches to eat.
2, the cockroach is also the intermediate host of lung flukes, although they have strict requirements for water quality, but still can not avoid parasites, if eaten must be thoroughly cooked.
3, crayfish is an invasive species, everyone shouts and fights, the cockroach is a native species, should be protected, I hope everyone can distinguish clearly, do not mix it up.
#Rumor Zero Plan ##全能创作家 #