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Procambarus clarkii, known variously as the red swamp crayfish, Louisiana crawfish or mudbug, [3] is a species of cambarid crayfish native to freshwater bodies of northern Mexico, and southern and southeastern United States, but also introduced elsewhere (both in North America and other continents), where it is often an invasive pest.
As early as 2003, Asian farms and fisheries produced more red swamp crayfish (P. clarkii) than the Americas, and this trend accelerated in subsequent years. By 2018, P. clarkii crawfish production in the Americas represented just 4% of total global P. clarkii supply, with Asian production accounting for the rest. [13]
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). [52] Optimum dietary nutritional requirement of freshwater crayfish, or crayfish nutrient specifications are now available for aquaculture feed producers [53]
A few species, including the invasive Procambarus clarkii and Faxonius rusticus, have been introduced to regions far outside their native range (both in North America and other continents). Conversely, many species have tiny ranges and are seriously threatened; a few are already extinct.
The marbled crayfish or Marmorkrebs (Procambarus virginalis) is a parthenogenetic crayfish that was discovered in the pet trade in Germany in 1995. [4] [5] Marbled crayfish are closely related to the "slough crayfish", Procambarus fallax, [6] which is widely distributed across Florida. [7] No natural populations of marbled crayfish are known.
The Louisiana red swamp crayfish (Procambarus clarkii), which normally reproduces sexually, has also been suggested to reproduce by parthenogenesis, [21] although no individuals of this species have been reared this way in the lab. Artemia parthenogenetica is a species or series of populations of parthenogenetic brine shrimps. [22]
Louisiana has the freshwater crawfish Procambarus clarkii. Maryland has the blue crab, Callinectes sapidus. [2] Oregon has the Dungeness crab, Metacarcinus magister. [3] California also has the Dungeness crab, Metacarcinus magister. [4] Alabama has the brown shrimp, Peneaus aztecus. [5] Maine has the lobster, Homarus americanus. [6]
Procambarus is a genus of crayfish in the family Cambaridae, all native to North and Central America. It includes a number of troglobitic species, and the marbled crayfish ( marmorkrebs ), which is parthenogenetic .