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Crustaceans
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Crustaceans

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Transcript

  • 1. Subphylum CrustaceaPhylum ArthropodaKingdom Animalia
  • 2. Background• Crabs,• Shrimp,• Lobster,• barnacles,• Copepods (70% of all crustaceans are copepods),• Krill (largest biomass of any species on earth),• Isopods,• Amphipods
  • 3. AnatomyJointed appendages withspecialized jobs:Locomotion:-Pereopods – walking legs-Pleopods – swimming legsFeeding:-Maxillipeds-Mandibles-Chela – pincers (claws)
  • 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. Anatomy continued
  • 6. Feeding• Most predators orscavengers• Some filter feeders(barnacles)• Some parasites on fishor whales (ex.isopods)
  • 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. Life Cycle of the Crustacean
  • 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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