blue crab


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Related to blue crab: Dungeness crab, Soft shell crab

blue crab,

common name for a crustaceancrustacean
, primarily aquatic arthropod of the subphylum Crustacea. Most of the 44,000 crustacean species are marine, but there are many freshwater forms. The few groups that inhabit terrestrial areas have not been particularly successful in an evolutionary sense; most require
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, Callinectes sapidus, found on the S Atlantic and Gulf coasts of North America. The blue crab is a member of the family of swimming crabs known as the Portunidae and is characterized by a broad, semitriangular carapace (shell) covering the thorax, by a narrow abdomen tucked under its body, and by five pairs of appendages called pereiopods, of which the first two bear large claws (chelae) and the last two are flattened paddles modified for swimming. It is the most common edible crab of the Atlantic coast, and several million pounds are fished commercially by trapping or trawling each year. It is sold both as the hard-shell variety and as the familiar delicacy known as the soft-shelled crab. In the hard-shell form, the crab is in an intermolt phase (between molts) and the exoskeleton is fully hardened (sclerotized). In its soft-shell stage, the crab is in the phase just after the molt but before the exoskeleton has hardened. Since, in nature, the crab retires to secluded areas at the time of the molt and is thus difficult to collect, commercial fishermen collect the crabs at the so-called peeler stage, which occurs two to three days before the molt. The crabs are then held in pens, on floats in the water, until just after the molt, when they are marketable. The ovaries of the female begin to develop only after mating has taken place. The female carries the young under her abdomen until they hatch as tiny larvae, which are only 1-25 in. (0.1 cm) long. The crabs molt many times and grow to 7 in. (17.8 cm) in about 200 days. Blue crabs are classified in the phylum ArthropodaArthropoda
[Gr.,=jointed feet], largest and most diverse animal phylum. The arthropods include crustaceans, insects, centipedes, millipedes, spiders, scorpions, and the extinct trilobites.
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, subphylum Crustacea, class Malacostraca, order Decapoda, family Portunidae.
References in periodicals archive ?
Rebecca Bromley, Anglian Water's Coastal Catchment Manager, said: 'We have painted the blue crabs near the rain drains so that they act as a visual reminder of the fact that what goes down these drains is going straight to the beach and sea.
Blue crabs, boasting a high nutritional value, are on the menus in tourist restaurants in the area.
The blue crab Callinectes sapidus differs from most of its congeners in the extension of its geographical range into temperate regions (where winter temperatures at the water/sediment interface reach near freezing) and in exploitation of the full scope of estuarine salinities available throughout that range (Williams 1984, Table 1).
To characterize the morphology of first-stage blue crab zoeae, 21 gravid adult female blue crabs (Callinectes sapidus Rathbun.
Physiological effect of an ectocommensal gill barnacle, Octolasmis mulleri, on gas exchange in the blue crab Callinectes sapidus.
North Carolina in recent years has ranked third or fourth among all states in annual commercial landings of hard-shell blue crab (NMFS, 2007-2014).
'From the legendary bucket list', we order a Snow Crab (Dh160) and the Crabapalooza (Dh185) - a mixed basket of blue crab, snow crab, cluster and king crab legs.
The Blue crab leaves The safe mangrove roots And etches its marks In
Among the species of the genus Callinectes, the blue crab (Callinectes sapidus Rathbun 1986) is the most economically important in the Western Atlantic, especially in North America, with a rich literature available for the United States of America and Mexico (Millikin & Williams 1984, Prager et al.
Researchers have also reported differences in concentrations of moisture, fat, ash, protein, and various volatile compounds in meats from different body parts of the blue crab, Callinectes sapidus (Rathbun, 1896), and in the Southeast Asian crab, Charybdis feriatus (Linnaeus, 1758) [16-18].
Dinner included filet mignon and chicken Chesapeake, topped with Maryland Blue Crab ImperiaL.

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