1. Arthropod Life Processes

2. Cuticle (Exoskeleton)
Fig

3. Ecdysis (Molting)
Fig

4. Molting in Decapods
Fig a

5. Molting in Insecta

6. Molting & Growth
With each molt an arthropod grows 10-20% in size
Molting is hormonally and environmentally controlled

7. Visual System
Fig

8. Vision System
Fig. 19.8

9. Phylum Arthropoda
Subphylum Crustacea

10. Fig

11. Subphylum Crustacea
1 pr appendages on each segment
2 pr maxillae
1 pr mandibles
2 pr antennae

12. SP Crustacea, Class Branchiopoda
Order Notostraca (tadpole shrimp)
Order Anostraca (fairy shrimp)
Order Cladocera (water fleas – Daphnia)
Fig
Flattened appendages
Central body appendages serve respiratory function (gill-like)

13. SP Crustacea, Class Maxillopoda
Subclasses
Ostracoda
Fig
Branchiura
Copepoda

14. SP Crustacea, Class Maxillopoda
Gooseneck barnacles
Subclass Cirripedia
Acorn barnacles

15. SP Crustacea, Class Maxillopoda
Subclass Cirripedia
Fig a
Barnacles on a whale

16. SP Crustacea, Class Malacostraca
Order Isopoda
Order Amphipoda
Fig b
Parasitic marine isopod

17. SP Crustacea, Class Malacostraca
Order Euphausiacea
Fig
Krill
Major contributor to zooplankton
Food source for baleen whales

18. SP Crustacea, Class Malacostraca
Order Decapoda
Fig a

19. Subphylum Crustacea Class Brachiopoda Class Maxillopoda
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

20. Crustacean Segmental & Appendage Morphology
Antenna
Fig. 19.1
Walking legs

21. External Features of a Decapod
Fig. 19.2

22. Parts are parts
Fig. 19.4

23. Decapod Internal Anatomy
Fig. 19.5

24. Circulatory & Respiratory Systems
Fig. 19.3

25. Excretory Systems
Fig. 19.7

26. Crustacean Reproduction & Development
Fig. 19.9