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Crab is a phylum of arthropods of the animal kingdom, subphylum Crustacea, molluscs, true molluscs, decapods, ventral suborders, and short-tailed suborders. It is a crustacean whose body is protected by a hard shell and breathes by its gills. Taxonomicly, it is the same animal as shrimp, lobster, and hermit crab.
The vast majority of species of crabs live in the sea or near the sea, but some inhabit freshwater or land. They rely on the mother crab to give birth to baby crabs, and each time the mother crab lays a large number of eggs, the number of which can reach more than millions. The main edible ones are three-wart crab, open-sea crab, blue crab and Chinese mitten crab.
The triangular cover under the crab is called the umbilicus, the pointed umbilicus is the male crab, and the white paste inside is cyan before cooking, which is the gonadal organ and secretions, such as: seminal vesicles, after cooking, the white paste shows a translucent color, and the taste is a little sticky.
The lid on the abdomen of the female crab is more oval-shaped, and some of the female crab's abdomen will have fine hairs when opened, which is to help the eggs be released to complete fertilization. The female crab has a red and clear red paste, which is the gonadal organ of the female crab and the egg cells in the gonads, and the taste is a bit like egg yolk, which is often mistaken for crab eggs, in fact, crab eggs are called crab eggs when the egg cells are expelled from the body after the gonads mature.
When the triangle of the male crab is opened, it is dead. After the crab dies, the accumulated gas in the body begins to expand, causing the umbilicus to open.
Crabs themselves contain histamine oxygen, and it is a high-protein food, the content of amines in the body is extremely high, after its death, these proteins will be broken down by histamine oxygen, producing a large amount of histamine, histamine is a toxic substance, even if it is cooked, it is still toxic, not suitable for consumption.
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The triangle on the male crab's stomach is a little deformed, probably because it has been injured before, and the horns are missing, and the ones that grow later will not be complete and neat.
The navel of a male crab is a thin triangular shape. It is the most common and easiest to distinguish male and female crabs from the shape of their navel, which is a small lid on the top of the belly near the bottom.
If the tip of this small lid is pointed and has a distinct triangular shape, it is a male crab, and if the top of this small lid is relatively round and blunt, a little close to a circle, it is a female crab.
Benefits of Male Crabs:
Male crabs have crab paste, delicious taste, and relatively large size, therefore, many people like to eat male crabs, generally speaking, most people will prefer to eat male crabs, because male crabs are relatively large, eating is more enjoyable, male crabs contain protein, amino acids, vitamins, minerals and other nutrients, moderate consumption of male crabs can play a role in replenishing energy, promoting metabolism, improving body immunity and so on.
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The acute triangle under the belly of the male crab is the sexual organ, commonly known as the pointed umbilicus. Needless to say, the function of the cusp umbilicus of bone is not to be mentioned.
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