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Global capture production of Gazami crab (Portunus trituberculatus) in thousand tonnes from 1950 to 2022, as reported by the FAO [2]Portunus trituberculatus is the world's most heavily fished crab species, with over 300,000 tonnes being caught annually, 98% of it off the coast of China. [3]
Portunus is a genus of crabs which includes several important species for fisheries, such as the blue swimming crab and the Gazami crab. [3] Other species, such as the three-spotted crab are caught as bycatch. [4] Fossil of Portunus convexus. The genus Portunus contains 13 extant species and another 26 species known only from fossils.
Portunus trituberculatus, known as the horse crab, known as the gazami crab or Japanese blue crab, is the most widely fished species of crab in the world, with over 300,000 tonnes being caught annually, 98% of it off the coast of China. [5] Horse crabs are found from HokkaidÅ to South India, throughout Maritime Southeast Asia and south to ...
The wild Atlantic salmon fishery is commercially dead; after extensive habitat damage and overfishing, wild fish make up only 0.5% of the Atlantic salmon available in world fish markets. The rest are farmed, predominantly from aquaculture in Norway, Chile, Canada, the UK, Ireland, Faroe Islands, Russia and Tasmania in Australia.
Crab meat can be prepared simply by boiling the crab either dead or alive until the shell turns from black to red. [38] This practice may be threatened by human activities, however, as microplastics have been found to be abundantly common in the gills of mangrove crabs due to human pollution. [ 14 ]
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For example, following the Indian Ocean monsoon, the Christmas Island red crab (Gecarcoidea natalis) migrates en masse, forming a "living carpet" of crabs. The crabs can travel up to 1.46 km (0.91 mi) in a day, and up to 4 km (2.5 mi) in total. [ 4 ]
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