Crustaceans

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Crustaceans

  1. 1. Subphylum CrustaceaPhylum ArthropodaKingdom Animalia
  2. 2. Background• Crabs,• Shrimp,• Lobster,• barnacles,• Copepods (70% of all crustaceans are copepods),• Krill (largest biomass of any species on earth),• Isopods,• Amphipods
  3. 3. AnatomyJointed appendages withspecialized jobs:Locomotion:-Pereopods – walking legs-Pleopods – swimming legsFeeding:-Maxillipeds-Mandibles-Chela – pincers (claws)
  4. 4. Anatomy contintuedBreathing – gills (usually under)Sensory – antennaeTail – telson and uropodsBody segments:-cephalothorax (head & body cavity AKA the carapace)and-abdomen (muscular dorsal part of body)
  5. 5. Anatomy continued
  6. 6. Feeding• Most predators orscavengers• Some filter feeders(barnacles)• Some parasites on fishor whales (ex.isopods)
  7. 7. Reproduction• Separate sexes• Males release sperm packet usingmodified appendages• Females mate during molting, holdsperm packet till fertilization• Females carry fertilized eggs underbody till hatching; fan them for oxygen
  8. 8. Life Cycle of the Crustacean
  9. 9. Statistics• Largest crab - Japanese Spider Crab (13 feet)• Heaviest crab - Alaskan King Crab (up to 24 pounds)• Heaviest Crustacean – American Lobster (up to 48 pounds)

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