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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 Columbus Zoo and Aquarium is a non-profit zoo located near Powell in Liberty Township, Delaware County, Ohio, United States, north of the city of Columbus.The land lies along the eastern banks of the O'Shaughnessy Reservoir on the Scioto River, at the intersection of Riverside Drive and Powell Road.
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.
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] Only a few land crabs, including certain Geosesarma species, have direct development (the mother carries the eggs until they have become tiny, fully developed crabs), and these do not need access to water to breed.
Pelagic red crab (Grimothea planipes)Grimothea planipes usually feeds on protists and zooplankton, but will feed by filtering blooms of diatoms. [7]As the most abundant species of micronekton in the California Current, Grimothea planipes fills an important ecological niche converting primary production into energy that larger organisms can use. [8]
The mangrove tree crab is a small species with males averaging about 2 cm (0.8 in) long and females slightly less. The large eyes are set far apart and the carapace is wider at the front than at the back. It is a mottled brown and olive colour which helps the crab to blend in with its surroundings.