Cancer irroratus
Cancer irroratus[edit | edit source]
Cancer irroratus, commonly known as the Atlantic rock crab, is a species of crab found in the northwestern Atlantic Ocean. It is a member of the family Cancridae, which includes other species of crabs such as the Dungeness crab and the red rock crab.
Description[edit | edit source]
The carapace of Cancer irroratus is typically reddish-brown with a distinctive pattern of lighter spots, which gives the species its name "irroratus," meaning "spotted." The carapace is broad and oval-shaped, with a smooth texture. Adult crabs can reach a carapace width of up to 13 cm (5 inches).
Habitat[edit | edit source]
Cancer irroratus is commonly found along the eastern coast of North America, from Nova Scotia to Florida. It inhabits rocky substrates and is often found in intertidal zones and shallow waters, although it can also be found at depths of up to 750 meters (2,460 feet).
Diet[edit | edit source]
The Atlantic rock crab is an opportunistic feeder, preying on a variety of organisms. Its diet includes mollusks, small fish, and algae. It uses its strong claws to crush the shells of its prey.
Reproduction[edit | edit source]
Reproduction in Cancer irroratus involves a complex mating ritual. Males and females engage in a courtship dance before mating. Females carry fertilized eggs on their abdomen until they hatch into larvae. The larvae undergo several molts before reaching adulthood.
Economic Importance[edit | edit source]
Cancer irroratus is of commercial importance in some regions, where it is harvested for its meat. The crab is caught using traps and is considered a delicacy in many coastal communities.
Conservation[edit | edit source]
While not currently considered endangered, the populations of Cancer irroratus are monitored to ensure sustainable harvesting practices. Overfishing and habitat destruction are potential threats to its populations.
Related pages[edit | edit source]
Rock crab on tunicate colony
Carapace of Cancer irroratus
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Contributors: Prab R. Tumpati, MD
