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Blue crab escaping from the net along the Core Banks of North Carolina.. Callinectes sapidus (from the Ancient Greek κάλλος,"beautiful" + nectes, "swimmer", and Latin sapidus, "savory"), the blue crab, Atlantic blue crab, or, regionally, the Maryland blue crab, is a species of crab native to the waters of the western Atlantic Ocean and the Gulf of Mexico, and introduced internationally.
Portunus pelagicus, also known as the blue crab, blue swimmer crab, blue manna crab and flower crab is a species of large crab found in the Indo-Pacific, including off the coasts Indonesia, [1] Malaysia, [2] Cambodia, [3] Thailand, [4] the Philippines, [5] and Vietnam; [6] and in the intertidal estuaries around most of Australia and east to New Caledonia.
Common names include blue swimmer crabs, Blue manna, Blueys, [2] and Jennies (for females). [3] The species was originally considered as a geographic variation of Portunus pelagicus, however in 2010 the Portunus pelagicus species was reviewed using DNA, as well as physical characteristics including measurements and four species recognised ...
Male fiddler crabs use many signalling techniques and performances towards females to win over a female to mate. [20] Females choose their mate based on claw size and also quality of the waving display. [21] It is very common for male fiddler crabs to be viewed fighting against one another. Male fiddler crabs fight primarily over females and ...
Another conspicuous difference is the form of the pleon ; in most male crabs, this is narrow and triangular in form, while females have a broader, rounded abdomen. [14] This is because female crabs brood fertilised eggs on their pleopods.
The crabs communicate with one another through chemical, visual, and acoustic cues. [8] The male then carries the female for thirty days in a precopulatory position under his body until the female molts. [7] [9] When the female's shell is still soft the male will invert her to position themselves with their abdomens in contact together. [7]
Portunidae is a family of crabs which contains the swimming crabs. Its members include many well-known shoreline crabs, such as the blue crab ( Callinectes sapidus ) and velvet crab ( Necora puber ). Two genera in the family are contrastingly named Scylla and Charybdis ; the former contains the economically important species black crab ( Scylla ...
Blue crab may refer to: Blue Crab 11, an American sailboat design; Callinectes sapidus – Chesapeake or Atlantic blue crab of the West Atlantic, introduced elsewhere; Cardisoma guanhumi – blue land crab of the West Atlantic; Discoplax celeste – blue land crab of Christmas Island; Paralithodes platypus – blue king crab of the North Pacific