The 'blue crab' (''Callinectes sapidus'', from the
Greek ''calli''="beautiful", ''nectes''="swimmer", and
Latin ''sapidus''="savory") is a
crustacean found in the waters of the western
Atlantic Ocean and
Gulf of Mexico, which is the Maryland State Crustacean and the subject of an extensive fishery.
[1]
Distribution and ecology
The blue crab is native to the western edge of the
Atlantic Ocean from
Nova Scotia to
Argentina.
[2] It has been introduced (via
ballast water) to
Japanese and
European waters, and has been observed from the
Baltic Sea,
North Sea,
Mediterranean Sea and
Black Sea.
[3]
The natural predators of the blue crab include
eels,
drum,
spot,
trout, some
sharks, and cownose
sting rays. The blue crab is an
omnivore, eating both plants and animals. Blue crabs typically consume thin-shelled
bivalves,
annelids,
fish,
plants and nearly any other item they can find, including
carrion.
Commercial importance
The
Chesapeake Bay, shared by
Maryland and
Virginia, is famous for its blue crabs, and they are one of the most important economic items harvested from it. In
1993, the combined harvest of the blue crabs was valued at around 100 million US Dollars. Over the years the harvests of the blue crab dropped; in
2000, the combined harvest was around 45 million dollars. In 19__ the
Maryland Department of Natural Resources created stricter guidelines for harvesting blue crabs to help increase populations. These include raising the legal size from 5 to 5¼
inches (from 12.7 to 13.3
cm) and limiting the days and times they may be caught.
While blue crabs remain a popular food in the Chesapeake Bay area, the Bay is not capable of meeting local demand. Crabs are shipped in from
North Carolina,
Louisiana,
Florida and
Texas to supplement the local harvest.
Harvesting techniques
Blue crabs are often harvested by using a "crabpot", although line crabbing (using a baited line similar to
fishing) is also popular among amateur "crabbers". The design of a crabpot can vary widely, but nearly all varieties are made out of wire mesh (older designs of wood and wire also exist, as well as all metal varieties). The crabpot is usually
cubical or
prismatic in shape (although cylindrical designs are also used). The crabpot contains two to four "entrances" for the crabs that prohibit exit. These may be as simple as hinged panels that are drawn closed as the crabpot is raised from the water, or may be in the form of a tapered or
conical aperture that allows the crab to squeeze through in one direction only. A crabpot is baited with any of several types of meat, including
bunker,
bluefish, chicken or
eel. The bait is placed in a holding spot (often a separate meshed enclosure preventing the crabs from completely removing the bait) in the middle or bottom of the pot.
The pots are distributed throughout the crabber's harvesting area and are checked approximately once a day for captures or depleted bait. Crabs that are caught are removed, and the pot is re-baited for the next day. Some people add the catch from each pot to a "keeper pot" that holds the live crabs until a substantial harvest is accumulated. When the keeper pot is appreciably full, the contents are prepared for a "crab feast" or for sale. The keeper pot also allows a crabber to fatten up the crabs until the time they are cooked.
The largest male crabs are known as "jimmies", and mature females as "sooks" or "sookies". Immature female crabs are known as "sallies" or "she-crabs".
Preparation
Blue crabs are most often eaten in the hard shell, after steaming them in large pots with water, vinegar and seasoning (
Old Bay Seasoning is a popular variety in Maryland). The cooked crabs are cracked by hand, and the meat pulled out and eaten directly, often with butter or additional seasoning. The picked meat, especially the large chunks from the backfin area, can also be used to make
crab cakes, crab
soup, or other dishes.
Crabs caught just after molting (before the new shell has had time to harden) are prepared as
soft shell crabs. Soft shell crabs are prepared by first cutting out the gills, face, and guts. The crab is then battered in flour, egg, and seasoning, then fried in oil until crispy. The result can be served as an
entrée, or in a sandwich.
Blue crabs average 15% edible meat, and that meat is high in
vitamin B12. Just three ounces of crab meat contain a full day's
allowance of the vitamin.
References
1. Maryland State Crustacean
2. ''Callinectes sapidus''
3. ''Callinectes sapidus''
External links
★
The Maryland Blue Crab Blue crab fact and information website.