Arthropod Life Processes. Cuticle (Exoskeleton) Ecdysis (Molting)
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Transcript of Arthropod Life Processes. Cuticle (Exoskeleton) Ecdysis (Molting)
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Arthropod Life Processes
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Cuticle (Exoskeleton)
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Ecdysis (Molting)
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Molting in Decapods
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Molting in Insecta
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Molting & Growth
• With each molt an arthropod grows 10-20% in size
• Molting is hormonally and environmentally controlled
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Visual System
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Vision System
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Phylum Arthropoda
Subphylum Crustacea
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Subphylum Crustacea
• 1 pr appendages on each segment
• 2 pr maxillae
• 1 pr mandibles
• 2 pr antennae
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SP Crustacea, Class Branchiopoda
• Flattened appendages• Central body appendages
serve respiratory function (gill-like)
Order Notostraca (tadpole shrimp)
Order Anostraca (fairy shrimp)Order Cladocera(water fleas – Daphnia)
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SP Crustacea, Class Maxillopoda• Subclasses
Branchiura
Copepoda
Ostracoda
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SP Crustacea, Class Maxillopoda• Subclass Cirripedia
Acorn barnacles
Gooseneck barnacles
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SP Crustacea, Class Maxillopoda
Subclass Cirripedia
Barnacles on a whale
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SP Crustacea, Class Malacostraca
Order Amphipoda
Parasitic marine isopod
Order Isopoda
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SP Crustacea, Class Malacostraca
• Krill– Major contributor to zooplankton– Food source for baleen whales
Order Euphausiacea
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SP Crustacea, Class Malacostraca
Order Decapoda
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Subphylum Crustacea • Class Brachiopoda
• Order Notostaca• Order Cladocera• Order Anostraca
• Class Maxillopoda– Subclass Branchiura– Subclass Copepoda– Subclass Ostracoda– Subclass Cirripedia
• Class Malacostraca• Order Amphipoda• Order Isopoda• Order Euphausiacea• Order Decopoda
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Crustacean Segmental & Appendage Morphology
Antenna
Walking legs
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External Features of a Decapod
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Parts are parts
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Decapod Internal Anatomy
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Circulatory & Respiratory Systems
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Excretory Systems
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Crustacean Reproduction & Development
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