CRAB

SOUL

Kingdom: Animalia... Phylum: Arthropoda... Sub-Phylum: Crustacea... Class: Malacostraca...Order: Decapoda... Sub-Order: Pleocyemata... Infra-Order: Brachyura...Super- Familias: see text...

Fiddler Crab Liocarcinus_vernalis ocypode_quadrata


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. They are generally covered with a thick exoskeleton, and are armed with a single pair of claws. Crabs are found in all of the world's oceans. Additionally, there are also many freshwater and terrestrial crabs, particularly in tropical regions.

BODY

blue_crab

True crabs have five pairs of legs, the first of which are modified into a pair of claws and are not used for locomotion. The mouthparts of crabs are covered by flattened maxillipeds. The gills of crabs are formed of flattened plates, resembling those of shrimp, but of a different structure.

In females, the abdomen retains a greater number of pleopods and is considerably wider. This relates to the carrying of the fertilised eggs by the female crabs.
Crabs are 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.

MIND

gecarcinus_ruricola

Crabs make up 20% of all marine crustaceans caught and farmed worldwide, with over 1½ million tonnes being consumed annually.

The infraorder Brachyura contains about 93 families. The evolution of crabs is characterised by an increasing robustness of the body, and a reduction in the abdomen. The earliest unambiguous crab fossils date from the Jurassic, although the Carboniferous Imocaris, known only from its carapace is thought to be a primitive crab.  About 850 species of crab are freshwater or (semi-)terrestrial species; they are found throughout the world's tropical and semi-tropical regions.

crab as food

The crab is prized for its delicious flesh

 

SOUL

BODY.......... MIND

....................MAIN INDEX

#1-ANIMALS ...... #1-SOCIETY

#2-ENERGIES ..... .#2-SPORT

#3-PLANTS ........ #3-EDUCATION

#4-MINERALS ......#4-SCIENCE

........................................#5-THINGS

........................................#6-EATING

........................................#7-FINANCE

COOL ANIMAL LINKS...

HAPPY ANIMALS

COOL GAMES LINKS...

peteca compétition et Peteca Rio plage par Pro Kicker (prokicker.ca)

Dexjam et Handburger les meilleurs sacs de main

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FACTS
English: Crab
Crabs can go in size from only 4 mm to 4 m.

Espanol : Cangrejo
Los Cangrejos puedes ir de 4mm a 4m.

Français: Crabe
Les Crabes peuvent aller de 4mm à 4 m.

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