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A shed carapace of a lady crab, part of the hard exoskeleton. Body structure of a typical crustacean – krill. The body of a crustacean is composed of segments, which are grouped into three regions: the cephalon or head, [5] the pereon or thorax, [6] and the pleon or abdomen. [7] The head and thorax may be fused together to form a ...
The Crustaceans Portal. 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 (/ krəˈsteɪʃə /), a large, diverse group of mainly aquatic arthropods including decapods (shrimps, prawns, crabs, lobsters and crayfish ...
Copepods (/ ˈ k oʊ p ə p ɒ d /; meaning "oar-feet") are a group of small crustaceans found in nearly every freshwater and saltwater habitat.Some species are planktonic (living in the water column), some are benthic (living on the sediments), a number of species have parasitic phases, and some continental species may live in limnoterrestrial habitats and other wet terrestrial places, such ...
Crustacean larva. Crustaceans may pass through a number of larval and immature stages between hatching from their eggs and reaching their adult form. Each of the stages is separated by a moult, in which the hard exoskeleton is shed to allow the animal to grow. The larvae of crustaceans often bear little resemblance to the adult, and there are ...
Maryland has the blue crab, Callinectes sapidus. [2] Oregon has the Dungeness crab, Metacarcinus magister. [3] Alabama has the brown shrimp, Peneaus aztecus. [4] Maine has the lobster, Homarus americanus. [5] Texas has the Texas Gulf shrimp, Penaeus aztecus, P. setiferus, and P. duorarum.
Crustaceans portal. Wikimedia Commons has media related to Crustacea. Crustaceans are members of the sub-phylum Crustacea, a large group of arthropods (55,000 species ). They include various familiar animals, such as lobsters, crabs, shrimp and barnacles. They are variously found in marine and freshwater, with a few terrestrial members (such as ...
Lobster was commonly found among these spreads, indicating that it continued to be held in high esteem among the wealthy. In one notable instance, the Bishop of Salisbury offered at least 42 kinds of crustaceans and fish at his feasts over nine months, including several varieties of lobster. However, lobster was not a food exclusively accessed ...
Isopoda. Isopoda is an order of crustaceans. Members of this group are called Isopods and include both terrestrial and aquatic species such as woodlice. All have rigid, segmented exoskeletons, two pairs of antennae, seven pairs of jointed limbs on the thorax, and five pairs of branching appendages on the abdomen that are used in respiration.