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Crustaceans
 

Crustaceans

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    Crustaceans Crustaceans Presentation Transcript

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