Why are flying crabs dead like river crabs?

The adaptability of flying crabs is relatively weak, the life span of flying crabs themselves is not particularly long, and there are environmental pollution problems, river crabs have very mixed feeding habits and strong survival ability, so flying crabs are not like river crabs are dead.

Why flying crabs are not like river crabs, all of them are dead, when river crabs are dying or dead, the hidoxylic acid in the crab's body will decompose to produce histamine. Histamine is a toxic substance, with the prolongation of death time, the crab body accumulates more and more histamine, and the poisonous gas is getting bigger and bigger, even if the crab is cooked, this toxin is not easy to destroy. Too high ammonia nitrogen must be excreted from the kidneys, so eating dead hairy crabs is very bad for the kidneys.

Dead crab eaters may experience symptoms such as vomiting, abdominal pain, and diarrhea. Even half-dead "legged crabs" should not be eaten.

Flying crabs do not die immediately when they come out of the water, but they do not survive for more than 24 hours.

Flying crabs are crabs that live in offshore or shallow sea areas, and are afraid of light and generally lurk on the bottom of the sea during the day. At night, it swims in the water column to eat. The taste of this pike crab has its own sweet and sour taste, and the meat is more plump. Its main production area is in the northern seas.

The use of Xianda technology temporary breeding equipment can realize the long-term survival of live seafood in a comfortable environment, to ensure its healthy long-term survival, even if it is transported to the destination, it can still continue to use the temporary storage pond to maintain its normal life metabolism.

Flying crabs do not die immediately when they come out of the water, but they do not survive for more than 24 hours. A kind of saltwater crab, after they leave the high salinity, high oxygen environment, the amount of activity will be reduced, if they leave the suitable living environment, they will slowly stop feeding and activities, river crab is a kind of freshwater crab, often burrowing in rivers, rivers, lakes and mud banks, day and night.

No, flying crabs are in the sea, flying crabs are crabs that live in offshore or shallow sea areas, and they are afraid of light and generally lurk on the bottom of the sea during the day! Swim to the water column at night to feed!

Flying crabs are out of the water in the sea and do not die immediately and survive for 24 hours.

King crab. The main causes of death for crab hunters are intense work and harsh weather during the crab season. King crab fishermen, commonly known as Alaskan crab catchers, are the ones who catch king crabs, but the work is extremely intense, sometimes requiring 21 hours of continuous work, fatigue combined with the cold climate and fierce winds and waves at sea, which take the lives of many crab fishers.

Alaskan crabgers are known as one of the most dangerous occupations in the world, and according to incomplete statistics, Alaskan crabgers have a work-related injury mortality rate.

It is about 50 times that of ordinary workers.

King crab, also known as Alaskan king crab, is a region of North America.

The most popular seafood is generally a king crab that can weigh about 3 kilograms, and larger ones can weigh up to 5 kilograms.

Not necessarily, it is recommended to judge whether the crab is dead according to the following methods: 1. The living is the fishy smell of aquatic plants, and the dead crab will have the smell of ammonia; 2. When the eyes of live hairy crabs are touched, they will move autonomously, and the eyes of dead crabs will not move on their own; 3. Stretch the calf of the hairy crab by hand, and when it is pulled away, it will shrink backwards to indicate that the crab is alive; 4. Put the crab in half a basin of water, and the bubbles are still alive. <

Not necessarily, it is recommended to follow the following method to tell if the crab is dead:

1. Smell the smell:Live hairy crabs have the fishy smell of aquatic plants, while dead crabs will have the smell of ammonia;

2. Look at the eyes3. When the eyes of live hairy crabs are touched, they will move autonomously, while the eyes of dead crabs will not move on their own;

4. Look at the crab claws:Stretching the calf of the hairy crab by hand will shrink back when it is pulled away, indicating that the crab is alive;

5. Spit bubbles:Put the crab in half a basin of water, and the crab that spits bubbles indicates that it is still alive.

No, crabIt has never seen a bird, has never seen a flying object, and in its eyes there is no "flight" defined by humans, and knows that fish can shuttle freely with the help of the surrounding medium and aqueous solution, but they cannot.

If it comes ashore and sees a flying object, it will not think that it is like the question. The movement of the creature that lives in the water will disturb the water surrounding it, generating waves, and it is likely that the crab can feel this wave and filial piety, so it directly feels the movement of the fish.

But man does not feel the flight of a bird. Even though we're all in the air, we can still feel the wind if the birds get too close.

Habits:

A small group of crabs breed entirely in freshwater, and they mostly inhabit the rocks of mountain streams. There are also crabs such as ground crabs that can adapt to land life, burrow in damp mud holes, and migrate to the sea during the breeding period.

The vast majority of crabs are omnivorous, and some are carnivorous, such as pike crabs.

It can prey on fish, shrimp and molluscs.

Wait. A few crabs, such as the crab, scrape or filter feed on algae.

and organic detritus.

The true death and fake death of crabs can be distinguished from five aspects: looking at the eyes, spitting bubbles, smelling the smell, looking at the crab claws, and untying the rope.

1. Look at your eyes.

Touch its eyes with your hand, the eyes of the crab that is feigned dead will shrink, while the eyes of the crab that is really dead will not move, and this method of judgment is also more accurate.

2. Spit bubbles.

Put the crab in half a basin of water, and the crab that will spit bubbles indicates that it is faked death, and the crab that does not react is really dead.

3. Smell the smell.

Fake dead crabs will smell fishy with aquatic plants, while real dead crabs will smell a little bad because they have begun to decompose and rot.

4. Look at the crab claws:

If it quickly returns to its natural bending state, it means that the crab is faked, and vice versa.

5. Untie the rope.

Put the crab at room temperature, and untie the rope, wait for a while to see if it can crawl, the fake dead will generally move, and the real dead will not move.

How to preserve crabs.

1. If you want to preserve crabs for a short period of time, you must choose fresh crabs, and the stronger the vitality, the better the preservation.

2. If the crab is preserved by hydroponics, the amount of water is the key, don't add too much water, otherwise the crab will easily die of lack of oxygen.

3. Do not scrub the crabs that need to be preserved, so as not to cause crab damage. Also, it's better to tie the crab legs well, which can reduce the frequency of the crab's activity, which reduces energy expenditure.

4. The longer the fresh crab is preserved, the thinner it will be, and the taste will be bad. Therefore, it is recommended to eat it all within a day.

It's best not to eat it, because it's too long to die, a few months ago I bought the Yangcheng Lake hairy crab in Su Crab Pavilion, and it was good when I brought it, but I raised a few of them, and I was afraid that it would be wasted, so I said that I cooked it and ate it, and then called their customer service ** and asked me not to eat it.

1.Dead crabs are not recommended to eat. Crabs love to eat rotten food, and pathogenic bacteria and toxic substances accumulate in their bodies. Dead crabs can quickly grow a large number of bacteria in their bodies, so they should not be eaten, especially in hot weather.

2.In terms of taste, the crab loses its original umami after it dies. There is also a histidine substance in the crab's body, histidine is easy to decompose, histamine and histamine-like substances can be produced under the action of decarboxylase, and the midgut gland will soon fall apart after the crab dies, and the histidine and digestive enzymes in it will decompose the crab meat.

Therefore, the taste of dead crabs is strange and the taste is greatly reduced.

3.The crab itself is non-toxic, but after the crab dies, after the crab's shell is broken, the protein in the crab's body will breed bacteria, and the infected bacteria in its body will multiply, and the bacteria may produce toxins. Dead crabs are likely to be poisonous.

4.The body of the crab is easy to carry heavy metals, after the crab dies, the midgut gland will quickly fall apart, and the digestive enzymes in it will decompose the crab meat, and the intestinal gland is relatively easy to enrich heavy metals, and the heavy metals will also come out after it rots to produce pollution.

5.If the crab has not been dead for a long time, it can still be eaten if it is refrigerated, remember, it is refrigerated and not frozen, and the sea crab is better than the river crab, because the living environment of the river crab is worse and there are more bacteria.