What is the difference between swimming crab and Chinese mitten crab?
The swimming crab is an arthropod of the class Malacostraca, order Decapoda, family Portunidae, and is an important aquaculture species in China's coastal areas. The Chinese mitten crab generally refers to Eriocheir sinensis, a long-renowned delicacy in China, with the Gucheng Lake Chinese mitten crab being the most famous, and besides that there are also Taihu Lake Chinese mitten crab, Yangcheng Lake Chinese mitten crab, Changdang Lake Chinese mitten crab, and others. Let's take a look below at the difference between swimming crab and Chinese mitten crab!
The difference in family and genus between swimming crab and Chinese mitten crab
1. Swimming crab: The swimming crab is a marine arthropod of the animal kingdom, phylum Arthropoda, subphylum Crustacea, class Malacostraca, subclass Eumalacostraca, order Decapoda, family Portunidae, genus Portunus.
2. Chinese mitten crab: The Chinese mitten crab is a freshwater arthropod of the animal kingdom, phylum Arthropoda, subphylum Crustacea, class Malacostraca, subclass Eumalacostraca, order Decapoda, suborder Pleocyemata, family Varunidae, subfamily Varuninae, genus Eriocheir.
The difference in alternative names between swimming crab and Chinese mitten crab
1. Swimming crab: The scientific name of the swimming crab is Portunus trituberculatus, and its alternative names include spear crab, sea crab, sea crab, sea worm, water crab, door crab, small door crab, scorpion, cover fish, three-spot crab, child crab, flying crab, smoke cricket, and others.
2. Chinese mitten crab: The scientific name of the Chinese mitten crab is Eriocheir sinensis, and its alternative names include river crab, hairy crab, clear-water crab, Chinese mitten crab, crab, and others.
The difference in origin between swimming crab and Chinese mitten crab
1. Swimming crab: The swimming crab is distributed in Japan, Korea, the Malay Archipelago, the Red Sea, and in mainland China in Guangxi, Guangdong, Fujian, Zhejiang, the Shandong Peninsula, Bohai Bay, the Liaodong Peninsula, and other places.
2. Chinese mitten crab: The natural distribution range of the Chinese mitten crab is mainly in northern Asia, western Korea, and China. In China it is distributed from the Yalu River estuary in Liaoning in the north, south to the Jiulong River in Fujian, and west to the Three Gorges mouth at Yichang in Hubei. With artificial breeding and release for stock enhancement of crab seedlings, this crab has now spread throughout the country, but in quality the Chinese mitten crab of Yangcheng Lake in the lower reaches of the Yangtze River and the Shengfang crab of Hebei are the most famous.
The difference in habits between swimming crab and Chinese mitten crab
1. Swimming crab: The swimming crab lives in the ocean. After leaving a high-salinity, high-oxygen environment its survival rate drops greatly. It adapts to a salinity of 13-38, with the most suitable growth salinity being 20-35, and the suitable overwintering salinity being 28-35. When the salinity is below 8 or above 38, it stops feeding and activity, and all die after one day.
2. Chinese mitten crab: The Chinese mitten crab often burrows in the muddy banks of rivers, streams, and lakes, hiding by day and emerging at night, and feeds on animal carcasses or grains. By each autumn it has grown rather plump, and often migrates back to coastal waters to breed. The eggs carried by the mother hatch between March and May of the following year, and the larvae undergo multiple metamorphoses, developing into young crabs, which then swim up rivers and streams and continue to grow in freshwater.