Gourt > Science > Biology > Flora and Fauna > Animalia > Arthropoda > Crustacea (10)
The crustaceans (Crustacea) are a large group of arthropods (55,000 species), usually treated as a subphylum . They include various familiar animals, such as lobsters, crabs, shrimp and barnacles. The majority are aquatic, living in either fresh water or marine environments, but a few groups have adapted to terrestrial life, such as terrestrial crabs, terrestrial hermit crabs and woodlice. The majority are motile, moving about independently, although a few taxa are parasitic and live attached to their hosts (including sea lice, fish lice, whale lice, tongue worms, and Cymothoa exigua), and adult barnacles live a sessile life - they are attached head-first to the substrate and cannot move independently.
The scientific study of crustaceans is known as carcinology. Other names for carcinology are malacostracology, crustaceology and crustalogy, and a scientist who works in carcinology is a carcinologist, crustaceologist or crustalogist.
Structure of crustaceans
Crustaceans have three distinct body parts: head, thorax, and abdomen (or pleon), although the head and thorax may fuse to form a cephalothorax. The head bears two pairs of antennae, one pair of compound eyes and three pairs of mouthparts. The thorax and pleon bear a number of lateral appendages, including the gills, and the tail ends with a telson. Smaller crustaceans respire through their body surface by diffusion , and larger crustaceans respire with gills or, as shown by Birgus latro, with abdominal lungs . Both systems (diffusion and gills) were being used by various crustaceans as early as the Middle Cambrian . More on [ Crustacean ]
@johncmayer "A barnacle is a type of arthropod belonging to infraclass Cirripedia subphylum Crustacea; related to crabs & lobsters." Wikip.
flarky (flarky) Thu, 17 Dec 2009 03:10:39 -0000
@johncmayer "A barnacle is a type of arthropod belonging to infraclass Cirripedia subphylum Crustacea; related to crabs & lobsters." Wikip.
crustacea banget deh ini GRRRR
anitaamalia (Anita Amalia) Wed, 16 Dec 2009 17:00:04 -0000
crustacea banget deh ini GRRRR
Bob esponja renuncia al crustacea cascarudo #paraunirseafrei
frioja (Fernando Rioja ) Mon, 14 Dec 2009 17:29:06 -0000
Bob esponja renuncia al crustacea cascarudo #paraunirseafrei
@ricbonco es difÃcil pertenecer a una familia crustácea, todos son muy duros!!! :S
KrabKrab (Krab Krab) Mon, 14 Dec 2009 06:57:41 -0000
@ricbonco es difícil pertenecer a una familia crustácea, todos son muy duros!!! :S
@KrabKrab jajajaja familias normales, debe ser difÃcil ser una familia crustácea xD
ricbonco (Ricardo Bonilla) Mon, 14 Dec 2009 06:55:57 -0000
@KrabKrab jajajaja familias normales, debe ser difícil ser una familia crustácea xD
enjoyed his whole day yesterday with family and a good friend; had lunch at secret recipes and buffet dinner in crustacea's my shrimp thai
docgelo (Angelo Nino Santos ) Sun, 13 Dec 2009 00:06:32 -0000
enjoyed his whole day yesterday with family and a good friend; had lunch at secret recipes and buffet dinner in crustacea's my shrimp thai
Crustacea.Net - Provides an interactive information retrieval system for the world crustaceans.
Meta Description: [ Provide an interactive information retrieval system for the world crustaceans. ]
Crustaceans of Southern Australia - Guide to the diverse fauna of the Victorian coastline.
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IV Taller - Brachyura - Workshop on crustacea, specially brachyura, held in Buenos Aires/Argentina (5-8 April, 1999)
Marine Crustaceans of Southern Australia - A beautiful site with photographs and articles about a large variety of crustaceans.
Nonindigenous Crustaceans - Describes common methods of introduction, with links to descriptions of species and US distribution maps.
The Crustacean Society - International society with the purpose to advance the study of all aspects of the biology of crustaceans, and to enhance the exchange of information among persons interested in them.
The Plankton Net - Online Guide to Research in Plankton Ecology and Biological Oceanography
Meta Description: [ Online Guide to Research in Plankton Ecology and Biological Oceanography. ]
Tree of Life - Crustacea - Taxonomy reference information.
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World Species List - Crustacean Database Listing
Zooplankton Sensory Systems - Dan Hartline and Petra Lenz's research (primarily crustacean).
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