How to divide male and female crabs, how to divide male and female crabs

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.

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

When raising crabs, to 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 crab navel of the male crab is pointed, and the crab navel of the female crab 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 does not.

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.

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.

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.

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.

1. Stomach

Hairy crabs can distinguish male and female by looking at the belly, the bottom of the belly of the hairy crab is triangular, it is a male crab, and if the bottom of the belly is round, it is a female crab.

2. Look at the umbilicus

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

3. Look at the legs

The legs of the male and female hairy crabs are not painful, and the female hairy crabs have fine hairy hairs on the front two legs, while the male crabs are different, they have fluff on their eight legs, so it is most convenient to distinguish the male and female hairy crabs.

Crab roe is nutritious and delicious, but in terms of biological structure, crab roe is the reproductive system and secretory gland of the female crab, and male crabs do not have these things, so the male hairy crab does not have crab roe. When there are more female crab roe, it is before the tenth month of the lunar calendar, and after the tenth month of the lunar calendar, the male crab is more delicious, because the crab roe of the female crab grows into a child and falls off, and the meat is less; At this time, the male crab has more white gelatin, so it is more delicious.

In fact, if you want to eat nutritious and delicious crabs, you have to master the time, and female crabs are best eaten in September, with full crab roe content and high crab meat content. And October is the fattest time for male crabs, the content of crab paste is extremely high, and the crab meat is fat, which is suitable for eating.