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Cambaroides is a genus of freshwater crayfish from eastern Asia (eastern Russia, northeastern China, Korean Peninsula and Japan). Together with Pontastacus, they are the only crayfish native to Asia. Cambaroides contains about six species: [1] [2] [3]
About 70%–80% of crayfish produced in Louisiana are Procambarus clarkii (red swamp crawfish), with the remaining 20%–30% being Procambarus zonangulus (white river crawfish). [12] Despite the large-scale production in Louisiana, most frozen crayfish available in supermarkets in other states are Chinese imports.
Crayfish usually have limited home range and so they rest, digest, and eliminate their waste, most commonly in the same location each day. Feeding exposes the crayfish to risk of predation, and so feeding behaviour is often rapid and synchronised with feeding processes that reduce such risks — eat, hide, process and eliminate.
Astacidae is a family of freshwater crayfish native to Europe, western Asia and western North America. The family is made up of four extant (living) genera: The genera Astacus (which includes the European crayfish), Pontastacus (which includes the Turkish crayfish), and Austropotamobius are all found throughout Europe and parts of western Asia, while Pacifastacus (which includes the signal ...
Palaeoechinastacus is the earliest body fossil from the family Parastacidae, and the earliest crayfish from Gondwana. The only earlier pieces of evidence of crayfish in the southern hemisphere are the trace fossils from Marengo, and some trace fossils from Argentina, dating from the Late Jurassic to the Late Cretaceous. This accords with the ...
Parastacidae belongs to the superfamily Parastacoidea, the monotypic taxon which contains all crayfish in the Southern Hemisphere. Parastacoidea is the sister taxon to Astacoidea, which contains all crayfish of the Northern Hemisphere. Crayfish and lobsters together comprise the infraorder Astacidea, as shown in the simplified cladogram below ...
From 1964 until recent years, the Hell Creek Cave crayfish was only believed to exist in the cave system that is its namesake. [9] Yet in 2005, a second population of crayfish was found in Nesbitt Spring cave in the same county. Then in 2010, a third population was discovered at an upwelling near Town Branch River in Yellville, Arkansas. These ...
Overstocking of crayfish can lead to higher rates of mortality, which is associated with higher rates of cannibalism and increased competition for shelter and food. [9] New Zealand Clearwater Crayfish Ltd farm grows the northern koura species P. planifrons using a gravity-fed system with pond culture and raceways. A key step in this koura farm ...