How are Different Groups of Arthropods Related?

The Arthropoda is the largest animal in the world. It is commonly known as arthropods, including shrimp, crab, mosquito, fly, butterfly, spider, pupa and extinct trilobites. There are about 1.2 million existing species in the world, accounting for 80% of the total number of existing species. The living environment of arthropods is extremely extensive, and they can be found in seawater, freshwater, soil and air. Some species are also parasitic in or out of other animals.

Arthropoda is an animal with sectioned body and appendages. It is a species in the animal kingdom.

Arthropods are symmetrical on both sides. By a column

Seawater, freshwater, ground, soil, and animals and plants are all places where they live.

all around the world.

Most arthropods

Scientific value of Arthropoda

Arthropod exoskeleton can form fossils. Arthropod fossils have been found in the Ediacaran fauna from about 800 to 1 billion years ago, and trilobites have appeared in large numbers since the early Cambrian. Many arthropod fossils have been used as standardized rocks for stratigraphic comparison and to indicate sedimentary environments.

Arthropod edible value

Arthropoda (6 photos)

Tricuspid punctatus: It has a lot of meat, is full of fat, delicious, and rich in nutrition. Each hundred grams of crab meat contains 14 grams of protein and 2.6 grams of fat. Fresh food is mainly steamed, and salted and processed "gun crab" and crab sauce. Crab eggs are rinsed and dried to become "crab seeds", which are all top-quality seafood products.

Saw margin crab (blue crab, crab): distributed in the East China Sea and the South China Sea. The delivery period is mostly from September to November. · It is a delicious and nutritious edible crab. It is used to catch unnatural eggs and lean natural crabs. After a short period of artificial breeding, it promotes female crabs to mature eggs. crab. The biggest feature is that it is easy to die after leaving the water. Crab meat has the functions of clearing heat, dispersing blood, nourishing, and reducing swelling. The whole crab is dried, ground, and rice wine is taken, which can cure bruises or sprains of the waist. Crab shell contains a large amount of chitin and is also the raw material for extracting soluble chitin. However, crab shells contain more calcium than shrimp shells, so they need to be decaged properly during extraction, and consume more hydrochloric acid than shrimp shells.

Chinese mitten crab (local name) river crab, crab, hairy crab, clearwater crab: widely distributed in lakes along the north and south coasts of China, most famously produced in Yangcheng Lake, Jiangsu. Since the 1960s, the output has dropped sharply. In recent years, manual transplantation and drainage have been implemented, and production has recovered. July to September is the peak production season. The meat is delicious and rich in nutrition. It contains 14 grams of protein and 5.9 grams of fat per 100 grams, which has a high economic value. This crab can only eat live crabs, because the protein in the dead crabs will decompose, and then it will produce crabine.