territorial scope

Portunus trituberculatus is an important economic crab in the Indian Ocean-Western Pacific Ocean, with a wide variety. Common are Portunus trituberculatus, Portunus pelagicus and Portunus trituberculatus.

There are many places where Portunus are made in China, and the waters near Zhoushan Islands are the main producing areas of Portunus in China.

Specific mass

Swimming crab, scientific name "Ephedra", is commonly known as "white crab" in some places. Named after the head breastplate is spindle-shaped. There are three protrusions in the center of the carapace, so it is also called "Portunus trituberculatus".

Portunus Zhoushan is tender and white, rich in protein, fat and various minerals. Swimming crabs are the strongest in winter, generally weighing about 250 grams, up to 500 grams. The red mud of the female crab is covered and tastes excellent. Swimming crab can be eaten fresh, steamed, fried or fried, or stewed in bean paste, or fried with crab to make rice cakes, pickles and tofu, which are common dishes on the table of residents in coastal areas. It can also be pickled, that is, the fresh Portunus trituberculatus is soaked in brine and can be eaten in a few days, commonly known as "fresh wind catching crabs". In the past, due to the high yield of Portunus trituberculatus, fishermen often chose live crabs covered with paste, put yellow in bowls, and let them solidify in the wind, rain and sun to become "crab yellow cakes", with excellent flavor, but low yield, which is difficult for ordinary people to taste.

Cultural allusions

Portunus trituberculatus grows in shallow coastal waters, inhabiting the sea area with water depth of 10-50m, and the sea area with 10-30m has the densest sediment. Swimming crabs are afraid of strong light, and most of them lurk at the bottom of the sea during the day and swim to the water layer for food at night. It likes to eat dead animals, a dead fish or dead shrimp, and often attracts crabs to compete for food. Portunus can be cultured in a crab pond with running water and aerobic equipment, and shelters such as stones and branches are set in the pond to reduce cannibalism. Male and female crabs are raised separately and fed with shellfish, mixed shrimp and fish. Portunus crab is delicious, mainly used for fresh food, and can also be refined into canned crab segments and dried crab meat. Crab eggs can be processed into seasoning, and crab shells can be processed into chitin. In addition, meat, viscera and shells can be used medicinally. People take advantage of its characteristics, often in the sea at night to recover the gill net with fish fillets, chicken and other bait in advance to catch the attracted crabs. Trawls and baits can also be used for fishing, and people can catch big live crabs.