Crabs
Callinectes sapidus
Scientific classification
Kingdom: Animalia Phylum: Arthropoda Subphylum: Crustacea Class: Malacostraca Order: Decapoda Suborder: Pleocyemata Infraorder: Brachyura Linnaeus, 1758
Superfamilies
Section Podotremata Cyclodorippoidea Homolodromioidea Dromioidea Homoloidea Raninoidea Section Eubrachyura Subsection Heterotremata Dorippoidea Calappoidea Leucosioidea Majoidea Hymenosomatoidea Parthenopoidea Retroplumoidea Cancroidea Portunoidea Bythograeoidea Xanthoidea Bellioidea Potamoidea Pseudothelphusoidea Gecarcinucoidea Cryptochiroidea Subsection Thoracotremata Pinnotheroidea Ocypodoidea Grapsoidea

Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" (Greek: brachy = short, ura = tail), or where the reduced abdomen is entirely hidden under the thorax. The blue crab ( Callinectes sapidus, from the Greek calli ="beautiful" nectes ="swimmer" and Latin Arthropods are Animals belonging to the Phylum Arthropoda (from Greek ἄρθρον arthron, " Joint " Structure of crustaceans As Arthropods crustaceans have a stiff Exoskeleton, which must be shed to allow the animal to grow ( Ecdysis or molting The Malacostraca (Greek "soft shell" are the largest class of Crustaceans and include most of the animals that non-experts recognize as crustaceans including The decapods or Decapoda ( literally means "ten footed") are an order of Crustaceans within the class Malacostraca, including many Pleocyemata is a sub-order of decapod crustaceans, erected by Martin Burkenroad in 1963  Carl Linnaeus (Latinized as Carolus Linnaeus, also known after his ennoblement as, May 23 new style (13 May old style 1707 who laid the foundations for Cyclodorippoidea is a superfamily of Crabs Dromioidea is a superfamily of Crabs mostly found in Madagascar. Homoloidea is a superfamily of Dromiacean Crabs The close relation between Homoloidea and Dromioidea is primarily established through ultrastructural characteristics Raninoidea is a superfamily of Crabs the only one in the Subsection Raninoida. Dorippoidea is a superfamily of Crabs Calappoidea is a superfamily of Crabs Leucosoidea is a superfamily of Crabs Majoidea is a superfamily of Crabs Families in the superfamily Majoidea Epialtidae Inachidae Hymenosomatidae is a family of Crabs with some 110 described species in nearly 20 genera Parthenopoidea is a superfamily of Crabs Retroplumidae is a family of Crabs Cancroidea is a superfamily of Crabs Portunoidea is a superfamily of Crabs Bythograeidae is a small family of Crabs which live around Hydrothermal vents The family contains 13 species in 6 genera  Xanthoidea is a superfamily of Crabs Belliidae is a family of Crabs of the order Decapoda. Genera Acanthocyclus Potamoidea is a superfamily of Crabs Psueodhtlephusidae is a Family of freshwater Crabs found chiefly in mountain streams in the Neotropics   Gecarcinucoidea is a Superfamily of freshwater Crabs Cryptochiridae is a family of Crabs known as gall crabs, because the females cause Corals to form protective Galls around themselves  Thoracotremata is a Clade of Crabs comprising those crabs in which the genital openings are on the sternum, rather than on the legs in both Pinnotheridae is a family of pea Crabs They are tiny soft-bodied crabs living commensally in the mantles of certain bivalve molluscs Ocypodoidea is a Superfamily of Crabs named after the genus Ocypode. Grapsoidea is a Superfamily of Crabs They contain many Taxa which are terrestrial (land-living semi-terrestrial (taking to the sea only for reproduction The decapods or Decapoda ( literally means "ten footed") are an order of Crustaceans within the class Malacostraca, including many Structure of crustaceans As Arthropods crustaceans have a stiff Exoskeleton, which must be shed to allow the animal to grow ( Ecdysis or molting Greek (el ελληνική γλώσσα or simply el ελληνικά — "Hellenic" is an Indo-European language, spoken today by 15-22 million people mainly They are generally covered with a thick exoskeleton, and are armed with a single pair of chelae (claws). An exoskeleton is an external Skeleton that supports and protects an animal's body in contrast to the internal Endoskeleton of for example a Human. A claw is a curved pointed appendage found at the end of a toe or finger in most Mammals, Birds, and some Reptiles. About 6000 species are known. ^[1] Crabs are found in all of the world's oceans. Additionally, there are also many freshwater and terrestrial crabs, particularly in tropical regions. Freshwater is a word that refers to bodies of water such as Ponds lakes rivers and streams containing low concentrations of dissolved Salts and other Total dissolved Gecarcinidae is a family of true Crabs that are adapted for terrestrial existence commonly known as land crabs. Crabs vary in size from the pea crab, only a few millimetres wide, to the Japanese spider crab, with a leg span of up to 4 m. The pea crab is a small Crab that lives symbiotically in Oysters, Clams, Mussels and other species of bivalves The Millimetre ( American spelling: millimeter, symbol mm) is a unit of Length in the Metric system, equal to The Japanese spider crab, Macrocheira kaempferi, is the largest known Arthropod; fully grown it can reach a leg span of almost 4  m (13  The metre or meter is a unit of Length. It is the basic unit of Length in the Metric system and in the International ^[2]

Contents 1 Diet 2 Crab fishery 3 Gallery 4 Cultural influences of the crab 5 References 6 See also

Diet

Crabs are 8 legged omnivores, some feeding primarily on algae, others taking any type of food, including mollusks, worms, other crustaceans, fungi, bacteria and detritus, depending on their availability and the crab species. For many crabs, a mixed diet of plant and animal matter results in the fastest growth and greatest fitness.

Crab fishery

Main article: Crab fisheries

Crabs make up 20% of all marine crustaceans caught and farmed worldwide, with over 1½ million tonnes being consumed annually. Crab fisheries are Fisheries which capture or farm crabs Crabs are found in all of the world's oceans The edible crab, Cancer pagurus, is a species of Crab found in the North Sea, North Atlantic and the Mediterranean Sea Fionnphort ( Scottish Gaelic: Fionnphort ˈfjun̪ˠafɔrˠʃt̪ is the principal Port of the Ross of Mull, and the second largest settlement Scotland ( Gaelic: Alba) is a Country in northwest Europethat occupies the northern third of the island of Great Britain. Structure of crustaceans As Arthropods crustaceans have a stiff Exoskeleton, which must be shed to allow the animal to grow ( Ecdysis or molting This article is about the tonne or metric ton For other tons see Ton. Of that total, one species accounts for one fifth: Portunus trituberculatus. Portunus trituberculatus, the gazami crab, Japanese blue crab or horse crab, is the most widely fished Species of Other important taxa include Portunus pelagicus, several species in the genus Chionoecetes, the blue crab (Callinectes sapidus), Charybdis spp., Cancer pagurus, the Dungeness crab (Cancer magister) and Scylla serrata, each of which provides more than 20,000 tonnes annually ^[3]. A taxon (plural taxa) or taxonomic unit, is a name designating an organism or a group of Organisms In Biological nomenclature according to Portunus pelagicus, also known as the flower crab, blue crab, blue swimmer crab, blue manna crab or sand crab, is Chionoecetes is a genus of Crabs that live in the cold waters of the northern Pacific and Atlantic Oceans nbsp The blue crab ( Callinectes sapidus, from the Greek calli ="beautiful" nectes ="swimmer" and Latin Charybdis is a Genus of swimming crabs in the family Portunidae; " Charybdis " is Greek for Whirlpool. The edible crab, Cancer pagurus, is a species of Crab found in the North Sea, North Atlantic and the Mediterranean Sea The Dungeness crab is a species of Crab that inhabits Eelgrass beds and water bottoms from the Aleutian Islands in Alaska to Santa Scylla serrata (often called Mud crab or Mangrove crab, although both terms are highly ambiguous as well as black crab) is an economically

Gallery

Masked crab, Corystes cassivelaunus	Liocarcinus vernalis	Circular crab, Atelecyclus rotundatus	The terrestrial halloween crab, Geocarcinus ruricola
Arrow crab Stenorhynchus seticornis	"Sally lightfoot", Grapsus grapsus	Thumbnail crab, Thia scutellata	Japanese spider crab, Macrocheira kaempferi
Ghost crab, Ocypode quadrata	Fiddler crab, Uca pugnax	Lyreidus tridentatus, a raninid	Hepatus epheliticus, a calico crab
Crab larva (megalopa)

Cultural influences of the crab

The Moche people of ancient Peru worshipped nature, especially the sea. Corystes cassivelaunus, the masked crab, helmet crab or Sand crab   is a burrowing Crab of the North Atlantic Liocarcinus vernalis, sometimes called the vernal crab, is a small shallow-water Crab found in the north-east Atlantic. The circular crab, round crab or old man's face crab ( Atelecyclus rotundatus) is a medium-sized Crab found on the west coast of Europe The Halloween crab ( Gecarcinus quadratus) also known as the Moon crab, Mouthless crab or Harlequin land crab, is a colourful The yellowline arrow crab, Stenorhynchus seticornis, is a saltwater Invertebrate that resembles a harvestman ( daddy long-legs The Crab Grapsus grapsus (known variously as " red rock crab " " abuete negro " and together with other crabs such as The thumbnail crab, Thia scutellata is a species of Crab whose Carapace resembles a human thumbnail. The Japanese spider crab, Macrocheira kaempferi, is the largest known Arthropod; fully grown it can reach a leg span of almost 4  m (13  "Uca" redirects here For other use see UCA. A fiddler crab', sometimes known as a calling crab, may be any of approximately Raninidae is a family of unusual Crabs named for their Frog -like appearance taken by most scientists to be quite Primitive. The Moche civilization (alternately the Mochica culture Early Chimu Pre-Chimu Proto-Chimu etc Peru (Perú Piruw Piruw officially the Republic of Peru ( reˈpuβlika del peˈɾu is a country in western South America. ^[4] They placed emphasis on animals and often depicted crabs in their art. ^[5]

References

See also

Arrow crab Blue Crab Calappa crab Chinese mitten crab Crab-eating Macaque Crab-eating Raccoon Dungeness crab

Emerald Crab Florida stone crab Giant crab Hippoidea Horsehair Jonah crab Lady crab

Land crab Mangrove crab Mud crab Paralithodes camtschaticus Red crab Sand bubbler crab Seaweed decorator crab

Soft-shell crab Soldier crab Spider crab Stilt crab Strawberry crab Tasmanian giant crab Velvet crab

The yellowline arrow crab, Stenorhynchus seticornis, is a saltwater Invertebrate that resembles a harvestman ( daddy long-legs The blue crab ( Callinectes sapidus, from the Greek calli ="beautiful" nectes ="swimmer" and Latin Calappa is a Genus of Crabs known commonly as box crabs, or shame-faced crabs. Chinese mitten crab, Eriocheir sinensis, also known as the big binding crab (大閘蟹 and Shanghai hairy crab (上海毛蟹 is a medium-sized The Crab-eating Macaque ( Macaca fascicularis) is a primarily Arboreal Macaque native to Southeast Asia. The Crab-eating Raccoon ( Procyon cancrivorus) is a species of raccoon native to marshy and jungle areas of Central and South America. The Dungeness crab is a species of Crab that inhabits Eelgrass beds and water bottoms from the Aleutian Islands in Alaska to Santa Emerald Crab is a species of Crab used as Pets in marine house Aquariums They are dark green colored The Florida stone crab, Menippe mercenaria, is a Crab found in the western North Atlantic, from North Carolina to Belize Hippoidea is a Superfamily of decapod Crustaceans known as sand crabs or mole crabs   Horsehair refers to hair taken from the Mane or tail of Horses It has various uses including Brushes and the bows of musical instruments The Jonah crab ( Cancer borealis) is a Species of Crab found on the Atlantic coast of North America. The lady crab, Ovalipes ocellatus, is a Crab that is usually found on sandy shallow water Gecarcinidae is a family of true Crabs that are adapted for terrestrial existence commonly known as land crabs. Mangrove crabs are Crabs that live among Mangroves and may belong to many different Species and even families. The red king crab or Stalin's Crab, Paralithodes camtschaticus, is the most coveted of the commercially sold King crab species and is the Sand bubbler crabs (or sand-bubblers are nocturnal Crabs of the genus Scopimera. The seaweed decorator crab, Naxia tumida, is a small crab of the family Majidae (with a Carapace up to 1 Soft-shell crab, sometimes abbreviated to just soft-shell, is a Seafood delicacy with the entire Crustacean capable of being eaten a result of catching Stilt crabs ( family Palicidae are a type of Crabs Subfamilies and genera Crossotonotinae The strawberry crab, Hawaiian strawberry crab or red boxing crab, Neoliomera pubescens, is a small bright pink Crab found in the Indo-Pacific The Tasmanian giant crab ( Pseudocarcinus gigas) sometimes known as the giant deepwater crab, giant southern crab and queen crab, is a species The velvet crab (alternatively velvet swimming crab or devil crab) is the largest swimming Crab found in British coastal waters with a

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