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Crustaceans (from Latin meaning: "those with shells" or "crusted ones") are invertebrate animals that constitute one group of arthropods that are a part of the subphylum Crustacea (/ k r ə ˈ s t eɪ ʃ ə /), a large, diverse group of mainly aquatic arthropods including decapods (shrimps, prawns, crabs, lobsters and crayfish), seed shrimp, branchiopods, fish lice, krill, remipedes, isopods ...
Like many decapod crustaceans, lobsters grow throughout life and can add new muscle cells at each moult. [50] Lobster longevity allows them to reach impressive sizes. According to Guinness World Records, the largest lobster ever caught was in Nova Scotia, Canada, weighing 20.15 kilograms (44.4 lb). [51]
The infraorder Astacidea comprises five extant superfamilies, two of crayfish (Astacoidea and Parastacoidea), one of true lobsters (Nephropoidea), one of reef lobsters (the genus Enoplometopus), and a number of fossil taxa. [6] As of 2009, the group contains 782 recognised species, over 400 of which are in the crayfish family Cambaridae. [6]
Abludomelita obtusata, an amphipod. Crustaceans (from Latin meaning: "those with shells" or "crusted ones") are invertebrate animals that constitute one group of arthropods that are a part of the subphylum Crustacea (/ k r ə ˈ s t eɪ ʃ ə /), a large, diverse group of mainly aquatic arthropods including decapods (shrimps, prawns, crabs, lobsters and crayfish), seed shrimp, branchiopods ...
Despite its shiny red exoskeleton and reputation as a bug of the sea, the lobster — though far from the world’s strangest delicacy — has long reigned as an unlikely luxury staple.
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Order Decapoda Latreille, 1802 – crabs, lobsters, crayfish, shrimp and prawns (includes former order Order Amphionidacea Williamson, 1973) Order Euphausiacea Dana, 1852 – krill; Superorder Peracarida Calman, 1904. Order Amphipoda Latreille, 1816 – amphipodes, gammares; Order Bochusacea Gutu & Iliffe, 1998; Order Cumacea Krøyer, 1846 ...
It is also known as Atlantic lobster, Canadian lobster, true lobster, northern lobster, Canadian Reds, [3] or Maine lobster. [ 4 ] [ 5 ] It can reach a body length of 64 cm (25 in), and a mass of over 20 kilograms (44 lb), making it not only the heaviest crustacean in the world, but also the heaviest of all living arthropod species.