How to distinguish male and female crabs, and how to distinguish male and female crabs?

First, look at the crab navel.

The reason why many people can't choose crabs is because they don't understand the body structure of crabs. When we choose, we can first look at the umbilicus of the crab, what about the umbilicus of the crab? Under the belly of the crab, you will see a small lid, this lid is called the crab navel, some crabs have round lids, while some are pointed, this place is the difference between the male and female crabs, if the crab navel looks pointed, then this is just a male crab, and if it looks round, then this is a female crab.

Second, look at the crab belly.

If you can't see the crab's navel, then you can focus on the crab's belly, the crab's belly is a better place to distinguish, if the belly looks triangular, then this crab is a male crab, but if the crab's belly is round, then this is the female crab, this contrast is quite effective and obvious.

3. Look at leg hair.

Many people will wonder when they see this, why does crab have leg hair when it is an aquatic species? In fact, it is not surprising that crabs do have fluff on their legs, much like microplants in the water, which is intended to protect and increase the predation rate of crabs. And the leg hair of this crab is also a point to distinguish the male and female of the crab.

Male crabs have fluff on all 8 legs, while female crabs only have fluffy on the front two legs. You have to look closely to see it.

Then I would like to tell you the difference between crab roe and crab paste, crab roe is the edible part of the crab eggs and other organs of the female crab, which is generally orange-yellow, while crab paste is composed of crab fat and other organs, white and sticky. Normally, crab roe only appears on female crabs, while crab paste is only found on male crabs.

In addition, to teach everyone how to eat crabs, eating crabs is also in order, first use tweezers to take out the meat of the crab legs and taste, after eating the meat of the crab legs, you can get the crab claws open, eat the meat inside, and then open the crab belly, take out the crab heart and crab intestines, dig out the crab roe or crab paste with a spoon, and finally cut the crab body, remove the crab stomach and crab gills inside, and use chopsticks or tools to eat crabs to remove the meat inside. This will allow you to eat a whole crab.

The abdomen of the female is a whole, and the abdomen of the male has many small pieces Buy crab knowledge How to pick crabs? Roughly speaking, the crab must be fresh, so it must be picked alive. It's okay to be big, but it has to be heavy.

Because the female has more crab roe, the female is better. According to people in the know, the fine selection of crabs should be "five looks": one look at the crab shell.

Where the back of the shell is black-green with a bright light, the flesh is thick and strong; The back of the shell is yellow, and most of them are thin. Second, look at the navel. The navel protruded, and the whole was full of fat; Most of the concave ones are underweight.

Three look at chelicera. All chelerae are covered with hairs, and they are all old and healthy; The chelicerae have no villi, and the body is soft. Fourth, 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. Five look at the male and female. Lunar.

Female crabs are selected in August and September, and male crabs are selected after September, because the male and female crabs have mature gonads at these two times, and the taste and nutrition are the best. By carefully studying and referring to these "five looks", you can select high-quality crabs from among the many crabs. "If you don't know Yangcheng, you will be ashamed of your eyes, and if you don't eat crabs, you will be disappointed."

The hairy crab in Yangcheng Lake has always been respected, known as the "king of crabs", and the food is called "in the middle". But there are not a few counterfeit Yangcheng Lake hairy crabs on the market, although the origin has put an anti-counterfeiting ring on it to distinguish it, but who can guarantee that this ring cannot be forged? According to experienced aquatic experts, there are four major characteristics that make hairy crabs different from each other:

One is the green back, the crab shell is blue-gray, smooth and shiny; the second is white belly, the navel and carapace of the mud are crystal white, and there are no black spots; the third is yellow hair, the hair of the legs is long and yellow, and the roots are straight; Fourth, the golden claws, the crab claws are golden, firm and powerful, and they can stand on eight legs on the glass, and the double chelates are in the air. Four tips for quickly identifying the good and bad of crabs: 1

Whether it falls or not: It does not sink in the hand. 2.

Press your claws with your hands to check if the meat is clean or not. 3.Whether the crab paste is enough to wear the seal fee and cross the phoenix to kill the preserved food, the tail end of the crab is full or bulging as the top grade.

1. Look at the abdomen: The abdomen of the male crab is triangular and pointed, while the abdomen of the female crab is round or oval.

2. Look at the crab legs: The female crab crab has fine hairs on the front two legs of the crab legs, while the male crab is different, and they have dense cherry hairs on all eight legs.

3. Look at the crab roe: the crab with orange and red grains is the crab roe, the crab with crab roe is the female spine and the crab roe is the ovary and egg cell of the crab next to the crab.

4. Look at the crab paste: the white sticky crab paste in the crab is the crab paste, the crab with crab paste is the male crab, and the crab paste is the accessory gonad of the crab.

The way to distinguish the male and female of the crab is very simple, which is to look at the shape of the navel of the crab: the navel of the female crab is round, and the navel of the male crab is thin and triangular

Differences in physical characteristics: male crabs have large bodies, long claws, large crabs, and pointed umbilicus. Female crabs are small, with short claws, small claws, and a round navel.

Physiological characteristics: male crabs have crab paste, mostly white, and the amount of collagen is very high. Female crabs have crab roe, mostly red, and have a very high protein content.

1. Differences in physical characteristics: male crabs have large individuals, long claws, large crab claws, and pointed umbilicus. Female crabs are small, with short claws, small claws, and a round navel.

2. Differences in physiological characteristics: male crabs have crab paste, which is mostly white and has a very high collagen content. Female crabs have crab roe, mostly red, and have a very high protein content.

Observe the navel: The navel of the male crab is triangular, and the eight crab legs are all hairy, while the belly of the female crab observes the crab roe: the crab roe is the ovary of the female crab, observe the crab paste:

Crab paste is the accessory gonads and their secretions of male crabs, which are translucent jelly-like.

Crabs can be divided into male and female: 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.

The nutritional value of crabs lies in the high protein content and low fat content. Crabs contain about 14% protein, about 25% fat, calcium, phosphorus, iron, potassium, carotene, riboflavin, a small amount of carbohydrates and thiamine. Crabs have a cold taste, so ginger juice is generally used when eating crabs; Do not eat too much at one time to avoid gastrointestinal reactions, and patients with allergies to crab and seafood should not eat it.

How to divide male and female crabs, in fact, the answer has been revealed in some sayings. The so-called "nine females and ten males", "September umbilicus, October tip" and so on, let's find out together.

Generally speaking, there are two ways to divide male and female crabs, the first is to look at the abdomen, and the other is to look at the legs. How can you tell for it? First of all, let's understand how to distinguish from the abdomen, generally speaking, the crab with a triangular belly is a male crab, and the round one is a female crab.

The second way is to look at the crab's legs. There is a gray-black mass of fluff on the two chelae, but the female is only this hair, and the rest of the legs are smooth, and the male. There are also fine hairs arranged like brushes on the eight legs. Compared to this method, it is relatively simple.

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 lid on the crab's belly near the bottom, if it is pointed and narrow, it is male, and the round and wide is female.

Observe the navel: the male crab has a triangular navel and all eight crab legs have fluffy hairs, while the female crab's navel is round or oval, and only the front two legs have fluff. Observe the crab roe:

Crab roe is the ovaries and digestive glands of the female crab. Observation of crab paste: Crab paste is the accessory gonads and secretions of male crabs, which are translucent jelly-like.

Brief introduction.

The body of the crab is divided into cephalothorax and abdomen. The back of the cephalothorax is covered with a cephalothorax, and the shape varies from species to species. The frontal part has a pair of antennae, and the outer side is a stalked compound eye.

The mouthparts include 1 pair of large jaws, 2 pairs of small jaws, and 3 pairs of jaw feet. There are 5 pairs of breasts and feet on both sides of the cephalothorax. The abdomen is vestigial, flattened, and zigzags on the ventral surface of the cephalothorax.

The abdomen of males is narrow and long, mostly triangular, and only the first two pairs of appendages are deformed into joints; The female has a broad abdomen, with 1 pair of double-branched appendages in each of the 2nd and 5th segments, densely covered with bristles, which are used to hold eggs. Most crabs are born in the sea, and the most common species are tropical shallow seas.

Crab slow air from the navel, crab roe, crab legs, crab paste and other aspects to divide male and female.

Belly button: The belly button is the best way to judge the male and female of a crab, because the belly button of a male crab is relatively pointed and triangular, while the belly of a female crab is rounded and round or oval in shape, in addition, the eight legs of the male crab have fluff, while the female crab only has fluff on the front two legs.

Crab roe: The orange-red crab 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.

Crab legs: Female crab legs only have fine hairs on the front two legs, while male crabs have dense hairs on all eight legs. Deficit cracking.

Crab paste: The male and female of the crab can also be judged by the crab paste, because the crab paste is the accessory gonads and their secretions of the male crab, which is translucent jelly-like and blue-white in color, and after the male crab matures, the accessory gonads are abnormally developed and will lift the crab shell.

Crab life feeding habits

The vast majority of crabs are omnivorous. For example, the crab that lives in the intertidal zone not only ingests plant carcasses, but also eats animal carcasses and small animals. There are also a considerable number of crabs that are carnivorous, such as pike crabs, which can prey on fish, shrimp and molluscs.

A small number of crabs, such as crabs, scrape or filter feed on algae and organic detritus. Crabs have large, hard, well-developed jaws that cut and bite food, while jaws and feet and small jaws help shred food and deliver it to the mouth.

Food enters the stomach through a short esophagus. The inner wall of the cardia of the stomach is composed of small bone fragments and ridges, and there is an infusion of digestive juices secreted by the hepatopancreas, where food entering the stomach is ground and digested before entering the pylorus. The inner wall of the pylorus also has a longitudinally ridged cuticle and many fine prickly hairs that filter and clean food.

When raising crabs, the main way to distinguish between male and female is to look at the crab's navel, that is, a piece of carapace in the crab's abdomen. The male crab's potato crab navel is pointy, while the female crab's crab navel is round, which can be seen at a glance.

The method of distinguishing pet crab male and female When raising crabs, you can distinguish whether they are male or female, you can look at their abdomen, there will be a piece of carapace on the crab's belly, called the crab navel, the male crab's crab navel is pointed, and the female crab's crab navel is round, which can be seen at a glance.

If the crab holds the eggs, it is better to distinguish the male and female, when the female crab is holding the eggs, there will be a lot of crab eggs at the crab navel, and the male crab is not there.

When the female crab holds the eggs, it is best to raise them separately, and keep the water quality in a hurry, appropriately increase the nutrition of the food, control the appropriate temperature, and help the female crab hatch smoothly.