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Crabs are aquatic crustaceans, molluscs, decapods. Not insects.
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Insects are insects that have wings, and crabs are not insects.
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No. 1. Although shrimps, scorpions and insects all belong to arthropods, they are not in the same category. Insects have a separate class in the phylum Arthropods, called Insecta.
2. Shrimp and crabs belong to the phylum Arthropods, Crustacea, and Decapods. It's crustaceans, not insects.
3. Insectaceae all have some common characteristics that other arthropods do not have. For example, the body is divided into three parts: head, thorax and abdomen, a pair of antennae and a pair of compound eyes, three pairs of feet and two pairs of wings, some of which are a pair of wings or vestigial wings, and the feet and wings are long in the thorax.
4. Shrimp and crab are both decapods, both have five pairs of legs, not three, and the cephalothorax is combined into one, so they are not insects.
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Yes.
Crabs have parasites on their bodies, and as aquatic animals, crabs are subject to many parasites in the water. Parasites in crabs generally attach to the gills of crabs and affect their breathing, but they are not fatal. Breeders can remove parasites by soaking crabs in medicated baths, and they also need to splash insect repellent regularly.
Crabs have parasites on their bodies, and as aquatic animals, crabs are subject to many parasites in the water. Parasite parasitism has little effect on crabs, but it is very harmful to humans. Parasites of crabs generally live in the gills of crabs, affecting the respiration of crabs, resulting in slower growth rates of crabs, but not fatal.
The breeder needs to use medication to clear.
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Crabs have parasites.
Crabs have parasites in them, and parasites are generally present in marine animals, and crabs in rivers and lakes mainly feed on animal carcasses or decaying materials, and their body surface, gills and gastrointestinal tract are full of bacteria and sludge. Therefore, it needs to be steamed at high temperature before eating, because almost all parasites will be killed by high temperature.
Crabs are crustaceans whose bodies are protected by a hard shell and breathe by their 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 female crabs to give birth to baby crabs, and each time the female crab will lay a lot of eggs, the number can reach more than millions, and the crabs rely on the geomagnetic field to determine the direction.
Parts that crabs can't eat
1. Crab stomach:The triangular bony bag in the crab lid and the triangular cone-shaped crab stomach contain dirty sand and cannot be eaten.
2. Crab heart:A hexagonal sheet in the middle of the crab body is picked out, which is the crab heart part and cannot be eaten.
3. Crab intestines:A black line leading from the crab's stomach to the crab's navel contains crab excrement and cannot be eaten.
4. Crab gills:The two rows of fluffy eyebrow-like objects that grow on the crab's belly are the crab's respiratory organs, and the inside is very dirty and cannot be eaten.
5. Crab shell:Some people like to gnaw on crab shells, but this part has the most contact with parasites and cannot be eaten.
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Crabs belong to aquatic organisms, and aquatic organisms generally have parasites.
Crabs belong to aquatic organisms, and aquatic organisms generally contain a large number of parasites, so most crabs will have parasites in their bodies. Since crabs rely on their gills for breathing, a large number of parasites can live in the gills of crabs. This is one of the reasons why gills cannot be eaten when eating crabs.
Crabs also need to be steamed at high temperatures before they are eaten, as almost all parasites are killed by high temperatures.
Precautions for eating crabs
1. Steam and cook thoroughly.
Heating and cooking can kill parasites and bacteria on the crab, so it is important to make sure that it is thoroughly cooked before eating.
2. Five places where you can't eat it.
1. Crab stomach: The triangular bone bag in the crab lid is a triangular pyramid-shaped crab stomach with dirty sand inside, which should be discarded.
2. Crab heart: A hexagonal sheet in the middle of the crab body is picked out, which is the crab heart part and should be discarded.
3. Crab intestines: a black line leading from the crab stomach to the crab navel, which contains crab excrement, should also be discarded decisively.
4. Crab gills: The two rows of soft eyebrow-like objects that grow on the belly of the crab are the respiratory organs of the crab, which are very dirty and must be discarded.
5. Crab shell: Some people like to gnaw on crab shells, but this part has the most contact with parasites and should not be used, and the best way is to use tweezers to clip out the meat of crab claws and crab legs.
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Macrophthalmidae is a genus of macrophthalmus decapod arthropods.
The figure below is shownMacrophthalmus abbreviatus
<> are found in the area of Tokyo Bay in Japan, the waters near Incheon on the Korean Peninsula, the Shandong Peninsula, the Liaodong Peninsula and Guangdong Province in China.
Yes, arthropods.
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Both insects and centipedes are arthropods, but centipedes belong to the class Myriapoda in arthropods, so centipedes do not belong to insects. There are four types of arthropods: insects, myriapoda, arachnids, and crustaceans.