Stone crab

Stone Crab is a common name for a group of crabs belonging to the family Lithodidae. The name "stone crab" is used in the context of the species' hard, stony exoskeleton and their habitat in rocky, coastal areas. The most well-known species is the Florida stone crab (Menippe mercenaria), which is found in the western North Atlantic, from Connecticut to Belize.

Biology and Behavior

Stone crabs are decapod crustaceans, meaning they have ten legs. The front two legs are modified into powerful pincers used for defense and feeding. Stone crabs are omnivorous, feeding on a variety of organisms including mollusks, polychaete worms, other crustaceans, and detritus.

Stone crabs exhibit a behavior known as autotomy, where they can shed a limb (usually a claw) in response to a threat or injury. The lost limb can regenerate over several molting cycles.

Commercial Importance

Stone crabs, particularly the Florida stone crab, are commercially important for their meat. The crabs are usually returned to the water after the larger of the two claws is removed, allowing them to regenerate the lost limb.

Conservation

While stone crabs are not currently listed as endangered, they face threats from habitat loss and overfishing. Regulations are in place in many areas to protect the species, including size limits and restrictions on the harvest of egg-bearing females.

See Also

• Crustacean
• Decapod
• Florida stone crab