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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.
Local springs in Lake George (and throughout the St Johns River) impart enough salt to the system to make the habitat suitable to resident and migratory marine species like Atlantic stingray, various species of mullet, striped bass and blue crabs. There is a large enough blue crab population to support a local fishery, making it one of the only ...
In 1993, the combined harvest of the blue crabs was valued at around 100 million U.S. dollars. Over the years the harvests of the blue crab dropped; in 2000, the combined harvest was around 45 million dollars. While blue crabs remain a popular food in the Chesapeake Bay area, the Bay is not capable of meeting local demand.
Calcinus elegans, also known as the blue line hermit crab, is a small, tropical hermit crab. ... (0–66 feet), a sea surface salinity range of 30-35 ppt, ...
Lee ‘Lucky’ Alewine sorts blue crabs on Sept. 20, 2024, throwing back small ones or females carrying eggs and keeping crabs that are at least five inches from across the shell, point to point.
Catches of blue crabs dropped unevenly from 4,265,063 pounds (1,934,600 kg) in 1987 to 389,795 pounds (176,808 kg) in 2012, but with high catches in 1998, 1991, alternating with low catch years. These crabs require 2% salt content in the water to survive. A drought increases the salt content and heavy rainfall decreases it.
The range of the optimum. Tolerance ranges are not necessarily fixed. They can change as: Seasons change. Environmental conditions change. Life stage of the organism changes. Example – blue crabs. The eggs and larvae require higher salinity than adults. The range of the optimum may differ for different processes within the same organism.