How do you identify a male and female crab? How to tell if a crab is male or female

In the juvenile stage, the shape of the abdomen of the female crab is narrow and elongated, and in the process of growth, the ventral surface of the female crab gradually becomes round and forms a clump of umbilicus, and the male crab is narrow and triangular in shape, forming a pointed umbilicus. Abdominal intercourse also has villi, a protruding intestine on the midline, and abdominal appendages that vary by sex.

The female has 4 pairs of abdominal limbs, born on 2 5 abdominal segments, and each abdominal limb is double-limbed, called the inner limb and the outer limb respectively. The bristles on the inner limbs are thin and long, with 30 to 40 rows, and are the places where the egg grains are attached when laying eggs. The bristles of the outer limbs are thick and short, and they have the function of protecting the egg colony of the abdomen.

The ventral limbs of the male have been transformed into two pairs, the first pair of articulators bamboo-textured, tubular, with stubby bristles at the apex; The second pair of joints is small, with an enlarged base and dense villi around it.

The thoracoped is an appendage of the thorax, including 1 pair of chelicerae and 4 pairs of footsteps, and from the external morphology of the river crab, the limbs are segmented, covered with chitinous crust and symmetrical, all of which are characteristic of it.

The crab meat is delicious and the crab roe is fat. Every year around the Double Ninth Festival on the ninth day of the ninth lunar month, it is not only the peak season for a large number of crabs to be listed, but also the best season for crab eating.

Choose crab to"Five looks"：

One look at the crab shell. The back of the shell is dark green, and the body is generally thick and solid; Yellow in color, mostly thinner.

Second, look at the navel. The navel protruded, and the whole was full of fat; Recessed.

Most of them are underweight.

Three look at the sting. Those with bristles on their stings are generally fat and healthy; Those without bristles are mostly soft and fatless.

Fourth, look at the male and female. Lunar.

Pick female crabs in August and September; After September, male crabs are selected. Because the male and female crabs mature at these two times, the taste and nutrition are the best.

Fifth, look at vitality. Turn the crab over, with the abdomen facing the sky, and can quickly turn it back with its stinging feet, which is vigorous and can be preserved; If it can't be turned back, the vitality is poor, and the storage time can't be long. After this"Five looks", you can choose high-quality crabs from a large number of crabs.

Crab-eating should avoid eating raw and dead crabs. Before cooking, be sure to clean the crab, especially braised crab or drunken crab, to remove the crab's 4 organs: crab stomach, crab gills; Crab intestines, crab hearts.

Among these four organs, bacteria and harmful substances are the most, which can easily cause illness in humans, so they should not be eaten when eating crabs.

Looking at its navel, the flap at the back of the male crab's belly is a small pointed triangle, a bit like a meditating Buddha, and the flap on the belly of the female crab is relatively large, like a semicircle that occupies nearly half of the belly, you can see it when you turn them over and look at them.

The flap at the back of the belly of the male crab is a small triangle with a sharp edge, and the flap on the belly of the female crab is like a large semicircular triangle that occupies nearly half of the belly.

The one under the mother's belly is covered with a big cover. The male is small.

The difference in appearance between male and female crabs

1. Look at the abdomen:The structure of male and female crabs on the abdomen is very different. The abdomen of the crab has a piece of the navel that can be lifted, and the male crab's navel is shaped like a triangle with a pointed top.

The female crab is a large round piece with no uneven edges and corners.

3. Look at the crab legs:Unlike female crab crab legs, which have fine hairs on the front two legs, male crabs have dense hairs on all eight legs.

3. Look at the crab roe:Among the crabs, the orange-red grain is the crab roe, the crab with the crab roe is the female crab, and the crab roe is the ovaries and egg cells of the crab. Generally, around the ninth month of the lunar calendar, the female crab has mature gonads, the crab meat is the fullest, and the male crab does not have crab roe.

4. Look at the crab paste:The white sticky crab in the crab is the crab paste, the crab with the crab paste is the male crab, and the crab paste is the accessory gonads of the crab. Generally, after the tenth lunar month, the male crab has mature gonads and the crab meat is the fullest, while the female crab does not have crab paste.

Tips for distinguishing male from female in crabs.

We all know that the most delicious crab is crab roe and crab paste, but crab roe is only available to female crabs, and crab paste is only available to male crabs, so it depends on personal preference. The hairy crabs on the market are basically the same in appearance, and they can't be seen from the appearance at all, but as long as we observe carefully, they can still be easily identified, as long as we keep the following points in mind when choosing:

1. Look at the abdomen:

The abdomen of male crabs is triangular and pointed, while the abdomen of female crabs is round or oval. In this way, it is the easiest and most convenient to distinguish between male and female crabs, and people can distinguish them with their eyes.

2. Look at the crab legs.

Unlike female crab crab legs, which have fine hairs on the front two legs, male crabs have dense hairs on all eight legs.

3. Look at the crab roe:

Among the crabs, the orange-red grain is the crab roe, the crab with the crab roe is the female crab, and the crab roe is the ovaries and egg cells of the crab. Generally, around the ninth month of the lunar calendar, the female crab has mature gonads, and the crab meat is the fullest. Male crabs do not.

How to choose crabs?

Pick crabs and pinch crab legs, the soft meat is insufficient, the hard ones indicate that the meat is full, the claws have meat, and the crabs are relatively fat, hehe, you don't look at the crabs at all, just pinch the crab legs to understand. The harder the crab legs, the better, otherwise it is the so-called "soft-footed crab".

In addition to distinguishing between male and female, you must also know the following tricks:

One look at the color: the back of the crab is the best cyan shiny.

Second, look at the weight: not the bigger the crab, the better, when you buy it, you can compare it to see which crab is heavier than the same big crab, and the heavier one is the one with more meat.

Third, look at the tail, the female crab with many yellow has a thicker tail.

In the eighth month of the lunar calendar, the female crab is the fattest, and the crab has roe feet; In the ninth month of the lunar calendar, male crabs are the most fragrant and have a lot of crab fat. "However, the time to eat river crabs is relatively short, October and November are the best, and the ninth month of the lunar calendar is better to eat female crabs.

Autumn is the best time for people to taste crabs. Selecting crabs is also divided into male and female, do you know how to distinguish male and female crabs when selecting crabs? Are there any tips and methods? Here's how to tell a male from a female crab that I've compiled for you, I hope it can help you.

1. Generally speaking, there are two ways to divide male and female crabs, one is to look at the abdomen, and the other is to look at the legs. First of all, let's understand how to distinguish from the abdomen, generally speaking, the crab's belly is a male crab with a triangular shape, and the round one is a female crab.

2. If you think the above method is troublesome, you can look at the crab's legs. There is a grayish-black mass of hairs on both chelae, but the female has only this hair, and the rest of the legs are smooth, and the male has fine hairs arranged like a brush on the eight legs. Compared to this method, it is relatively simple.

3. In addition, according to the folk tradition, the way to distinguish the male and female of the crab is to see whether it is a pointed umbilicus or a round umbilicus, that is, to see a small cover on the crab's belly near the bottom.

Barracuda crab (scientific name: three-wart crab, commonly known as: pike crab, gun crab, sea crab, child crab, flying crab, white crab).

Flower crab (scientific name: ocean pike crab, commonly known as: ocean pike crab, blue crab, flower crab, flower foot market, orchid crab).

Safflower crab (scientific name: rusty spotted crab, commonly known as: pattern stone crab, flower crab, fire roasted male, cross crab, Wanli crab).

Stone crab (scientific name: Japanese cockroach, etc., commonly known as: stone armor red, stone tong climbing, flower cover crab).

Blue crab (scientific name: saw-edge blue crab, pseudo-hole blue crab, etc., commonly known as: cockroach, yellow beetle crab, cockle, plaster crab, red cockroach, red paste female crab, Hele crab, Zheng cockroach).

Hairy crab (scientific name: Chinese mitten crab, commonly known as: crab, river crab, hairy crab, Qingshui crab, Yangcheng Lake hairy crab, Shengfang crab, Huajin crab, Nanhu crab......)

Horn-eyed sand crab (scientific name: horn-eyed sand crab, commonly known as: crab boss......)

Sand crab (scientific name: flat-palmed sand crab, Mohs's sand crab, etc., commonly known as: beach crab).

Monk crab (scientific name: short finger monk crab, commonly known as: sea monk, sea pearl, soldier crab, pounded rice crab).

Coconut crab (scientific name: coconut crab, commonly known as: gossip crab, robber crab).

Hermit crab (scientific name: hermit crab general family, commonly known as: strange crab).

King crab (scientific name: Kamchatka pseudo-rock crab, etc., commonly known as: Alaskan king crab, cod crab).

Spider crab (scientific name: Japanese spider crab, etc., commonly known as: giant spider crab).

King crab (scientific name: giant crab, commonly known as: Australian king crab, Tasmanian giant crab, Australian king crab).

Zodiac crab (scientific name: 8 kinds of crabs, including northern yellow crab, common yellow crab, chief yellow crab, and spotted yellow crab, commonly known as: Dungeness crab, Dunkins crab, Tang Jin crab, ** crab, brown crab, Vancouver crab, ......etc.).

Creek crab (scientific name: sawtooth Huaxi crab, Yangtze Huaxi crab, etc., commonly known as: stone crab, water crab, mountain crab).

Fiddler crab (scientific name: innocent fiddler crab, Taiwan fiddler crab, arc edge fiddler crab, etc., commonly known as: violin crab).

Bean crab (scientific name: Chinese bean crab, Linglong bean crab, close bean crab, etc.).

Crab (scientific name: Chinese Xiangshou crab, etc., commonly known as: Xiangshou crab, cockroach, cockroach, grinding crab, purr).

Dawn crab (scientific name: red line dawn crab).

The specific identification method is as follows.

1. Crab stomach: In the "triangle bag" in the crab roe, open the crab shell and see that there are some crab roe on the shell, and the crab stomach is hidden in the crab roe of the shell. The crab stomach is dirty and is not recommended to eat.

2. Crab intestines: A black line from the crab stomach to the crab navel, and the crab intestines are located in the triangle that can be broken in the lower abdomen of the crab. Open the triangle to see a black line at the top of the crab. Crab intestines are also not suitable for consumption.

3. Crab heart: It is the "hexagonal plate" under the black membrane, and traditional Chinese medicine often says that the crab is extremely cold, and the crab heart is the most. The crab heart is a white hexagonal shape, and it is generally located under a black membrane coating. The crab heart is extremely cold and should not be eaten.

4. Crab gills: shaped like two rows of "small fans", the two rows of gray fan-like soft tissue on the crab body after opening the crab shell are crab gills. The gills are the respiratory system of crabs and should not be eaten.

The way to distinguish the male and female of a crab is: look at the umbilicus, look at the belly, look at the legs, etc.

1. The crab can be divided into male and female to see the umbilicus.

The umbilicus of the crab is the small lid on its belly near the bottom, if the small lid is pointed, it means that the crab is male, if the small lid is round, it means that the crab is female.

2. Crabs can be divided into male and female stomachs.

If you want to distinguish whether the crab is male or female, you can also look at the belly of the crab, the bottom of the crab's belly is triangular, which is the male crab, and the round below the belly is the female crab, this kind of crab can be bought with confidence, and it will definitely allow people to eat more crab roe.

3. Crabs can be divided into male and female legs.

The legs of the female crab are different from the legs of the male crab, it only has fine hairs on the front two legs, while the male crab is different, they have fluff on all eight legs, so it is the easiest and most convenient to distinguish the male and female of the crab, and people can distinguish it with their eyes.

Crabs

Crabs are the kingdom Animalia, phylum Arthropods, Crustacean subphylum, Molluscium, True Molluscs subclass, Decapodium, Ventral Embryo Suborder, Brachytail Inferior Order. 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.

In fact, it mainly depends on whether the lid of the abdomen is round or pointed, and you can distinguish it. The large round lid covers the entire abdomen, and that is the female.