1. Mollusks and Annelids BIOL 1407

3. Phylum Mollusca Chitons Gastropods – snails, slugs Bivalves – clams, oysters, scallops Cephalopods – chambered nautilus, squid, cuttlefish, octopus

4. Chitons

5. Gastropods Photo Credit for Slug: Dr. Stephen Bostic, 2008 Video: Click on “Mating Leopard Slugs” http://www.bbc.co.uk/sn/tvradio/programmes /lifeintheundergrowth/video.shtml

6. Gastropods Photo Credit for Florida Fighting Conch: LA Dawson, 2006, Wikimedia Commons

7. Bivalves Photo Credit for Giant Clam: Jan Derk, 2002, Wikimedia Commons

8. Cephalopods Video with Octopus and Cuttlefish: Start at 1:20 minutes http://www.youtube.com/watch?v=zC0zOLqYnRg&feature=related http://www.youtube.com/watch?v=zC0zOLqYnRg&feature=related Chambered Nautilus Photo Credit for Octopus: Albert Kok, 2007, Wikimedia Commons

9. Cephalopods Photo Credit for Flamboyant Cuttlefish: Jenny Huang, 2006, Flickr Photo Credit for Caribbean Reef Squids: Clark Anderson, 2006, Wikimedia Commons

10. Characteristics of Mollusks Bilateral symmetry Triploblastic Coelomate Trochophore larva Photo Credit for Lined Chiton: Kirt L. Onthank, 2007, Wikimedia Commons

11. Characteristics of Mollusks Shells (exoskeleton) Mantle Visceral Mass Foot Photo Credit for Common Snail: Macrophile, 2005, Wikimedia Commons

13. Characteristics of Mollusks Radula (many) Video: http://www.youtube.com/watch?v=B MOSvz5mThM&NR=1 http://www.youtube.com/watch?v=B MOSvz5mThM&NR=1 Video: http://www.teara.govt.nz/EarthSeaA ndSky/SeaLife/Shellfish/2/ENZ- Resources/Standard/2/en http://www.teara.govt.nz/EarthSeaA ndSky/SeaLife/Shellfish/2/ENZ- Resources/Standard/2/en Photo Credit for Gray Garden Slug Radula, TM400x: Michal Maňas, 2005, Wikimedia Commons

14. Characteristics of Mollusks Complete Digestive System Circulatory System: open or closed Gills Centralized nervous system Photo Credit for Nudibranch: Jans Petersen, 2006, Wikimedia Commons

15. Intelligence Cephalopods –Complex Brains –Excellent Vision –Nervous System controls Chromatophores –Video, Kings of Camouflage: http://www.youtube.com/watch?v=2 x-8v1mxpR0 http://www.youtube.com/watch?v=2 x-8v1mxpR0 Photo Credit: Nick Hobgood, 2006, Wikimedia Commons

16. Centralized Nervous System

18. Phylum Annelida Segmented Worms Oligochaetes – earthworms & relatives Polychaetes Leeches

19. Oligochaetes Photo Credit of earthworm : Michael Linnenbach, 2005, Wikimedia Commons

20. Polychaetes Photo Credit of Christmas Tree Worms : Nick Hobgood, 2005, Wikimedia Commons

21. Leeches

22. Characteristics of Annelids Bilateral Symmetry Triploblastic Coelomate Segmented Trochophore larvae Photo Credit of Tomopteris: Courtesy of uwe kils, 2005, Wikimedia Commons

24. Annelid Videos Giant Earthworm Video: http://www.youtube.com/watch?v=DZig6EL5B6A http://www.youtube.com/watch?v=DZig6EL5B6A Leech Video from Science Now: –Short Version (podcast): http://www.youtube.com/watch?v=cKUAroimQrk http://www.youtube.com/watch?v=cKUAroimQrk –Long Version with graphic surgery: http://www.pbs.org/wgbh/nova/sciencenow/0305/01.html http://www.pbs.org/wgbh/nova/sciencenow/0305/01.html (Warning: bloody pictures)

25. Incomplete vs. Complete Digestive Systems

27. Animal Nutrition Macronutrients: –Carbohydrates –Lipids –Proteins Essential Nutrients –Essential Amino Acids –Essential Fatty Acids –Vitamins –Minerals

28. Transport Closed Circulatory System Hearts = Pumps Blood Vessels = Pipes –Arteries –Capillaries –Veins Blood = Fluid Photo Credit: Dr. Stephen Bostic, 2008

30. Gas Exchange Gills or Skin Surface Respiratory Pigments –Hemoglobin; Dissolved in blood (most common) –Chlorocruorin (some polychaetes) –Hemerythrin (some polychaetes) –Photo Credit for Terebellid Polychaete: Matthias Buschmann, 2007, Wikimedia Commons

32. Excretory System: Metanephridia

33. Centralized Nervous System

34. The End Unless otherwise specified, all images in this presentation came from: Campbell, et al. 2008. Biology, 8 th ed. Pearson Benjamin Cummings.