Arthropoda – Blue Crab (Crustacean) By: Mitch Joyce
Classification Common Name Scientific Name Kingdom Name Phylum Name Blue Crab Scientific Name Callinectes sapidus Kingdom Name Animalia Phylum Name Arthropoda Class Name Malacostraca
Common Characteristics Advantage Fifth leg is a paddle-like shape used for swimming Symmetry Bilateral Body Cavity Coelomate Type of Organism Free living Omnivore Aquatic Segmentation
Life Cycle Life Span Offspring Reproduction 1 to 3 years Most are harvested before they are able to grow old Offspring Typically 2 million eggs Only 1% will survive to become an adult Reproduction Sexually
Habitat Where they live Niche Western Atlantic Ocean Introduced to Europe and Asia Niche Major predator of benthic invertebrates and small fish It is a scavenger Cleans up pieces of dead animals
Special Characteristics Physical Pair of flat, oar shaped legs Swimmerets Olive green on back, white belly, blue and red on legs Behavior Typically walk sideways Use by Humans High value fishery species 217.3 million pounds harvested - $142.5 million Fishery in Chesapeake Bay is for recreational and commercial use
Video Blue Crab eating a clam http://www.youtube.com/watch?v=vJUG8UvY-lk&feature=player_detailpage
Sources Davis, Branda, and Glenn Davis. "Life History and Management of Blue Crabs." Maryland Department of Natural Resources. 12 Aug. 2008. Web. 14 May 2011. <http://www.dnr.state.md.us/fisheries/recreational/articles/bluecrablhmgt.html>. Hill, K. "Callin_sapidu." Smithsonian Marine Station (SMS) at Fort Pierce. 14 May 2011. Web. 14 May 2011. <http://www.sms.si.edu/irlspec/Callin_sapidu.htm>. Turner, H. "BLUECRAB.INFO - Blue Crab Life Cycle." BLUECRAB.INFO - The Blue Crab Archives. 14 May 2011. Web. 14 May 2011. <http://www.bluecrab.info/spawning.html>. "Blue Crabs of the South Atlantic Bight." Www.dnr.sc.gov. Web. 14 May 2011. <http://www.dnr.sc.gov/marine/sertc/Blue%20Crab%20SOM.pdf>.