arthropod life processes. cuticle (exoskeleton) ecdysis (molting)
TRANSCRIPT
Arthropod Life Processes
Cuticle (Exoskeleton)
Ecdysis (Molting)
Molting in Decapods
Molting in Insecta
Molting & Growth
• With each molt an arthropod grows 10-20% in size
• Molting is hormonally and environmentally controlled
Visual System
Vision System
Phylum Arthropoda
Subphylum Crustacea
Subphylum Crustacea
• 1 pr appendages on each segment
• 2 pr maxillae
• 1 pr mandibles
• 2 pr antennae
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)
SP Crustacea, Class Maxillopoda• Subclasses
Branchiura
Copepoda
Ostracoda
SP Crustacea, Class Maxillopoda• Subclass Cirripedia
Acorn barnacles
Gooseneck barnacles
SP Crustacea, Class Maxillopoda
Subclass Cirripedia
Barnacles on a whale
SP Crustacea, Class Malacostraca
Order Amphipoda
Parasitic marine isopod
Order Isopoda
SP Crustacea, Class Malacostraca
• Krill– Major contributor to zooplankton– Food source for baleen whales
Order Euphausiacea
SP Crustacea, Class Malacostraca
Order Decapoda
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
Crustacean Segmental & Appendage Morphology
Antenna
Walking legs
External Features of a Decapod
Parts are parts
Decapod Internal Anatomy
Circulatory & Respiratory Systems
Excretory Systems
Crustacean Reproduction & Development