1. commons.wikimedia.org/wiki/File:Libr0409.jpg

2. WORM PHLYA Worms are general grouping Worms have bilateral symmetry Worms are the beginning of advanced inverts –Organs and other specialization –Complete digestive tracts –Body cavity/ coelem found in most bilateral animals organs are suspended in this space

3. Worm Phylas Worms are soft bodied so they mostly live in tubes, burrows or under something Feeding ranges from parasites to carnivorous hunters Some worms create mucous nets to catch food while they are safe in their burrow

4. Platyhelminthes - Flatworms –Central nervous system (brain) –Muscles –Flat and thin so gas and nutrients can diffuse right into their body –Incomplete DT –No body cavity –Hermaphrodites: sexual and asexual reproduction

5. Class Turbellaria –Mostly bottom dwellers, living in sand or mud under rocks –Carnivorous: eat other inverts –Most common marine flatworms

6. Class Turbellaria

7. Class Trematode- Flukes Parasitic- thick cuticle for protection Adults live in a vertebrate like a fish, larvae live in a invertebrate like a snail.

8. Oswaldo Cruz Foundantion - Rio de Janeiro, Brazil Specimen: Trematode sp. (400x

9. Class Cestode- Tapeworms –Long segmented bodies carrying many generations of new tapeworms –A single segment can contain 100,000 eggs –Parasitic www.dscc.edu/bwilliams/Biology2/bio2animal.htm

10. Tapeworm found on Tiger sharks and mackerel. http://www.marineparasitology.com/Papers/Palm%20&%20Klimpel%202007.pdf

11. biology.unm.edu/.../Summaries/SimpleAnimals.htm

12. Nemertea- Ribbon worms Nervous system with a brain Muscles Circulatory System with blood vessels Complete digestive tract (mouth and anus) No body cavity Mostly separate sexes Sense organs

13. Ribbon worms continued- Stretchy bodies (8 in can stretch to 3 ft) Gather food with a proboscis that everts from inside them to catch food Proboscis may be sticky or poisoned

14. www.seamuse.com/rhyncocoela.htm

15. Habitat- Bottom dwelling beneath something or burrowed into something www8.nos.noaa.gov

16. Nematode - Roundworms -Nervous system and brain -Muscles -Closed circulatory system -Complete digestive tract -Body cavity -Separate sexes / sexual repro -Have to molt cuticle as they grow

18. Nematodes cont…. –Live in sediments and tissues of orgs –parasitic & predatory

19. Annelida – Segmented Worms –Head-like area with a brain –Muscles –Closed circulatory system –Complete DT –Body cavity –Hermaphroditic/ sexual

20. Annelids continued Most diverse of worms Segmentation- repeated compartments –Helps with motion –Allows for appendages http://faculty.clintoncc.suny.edu/faculty/Mic hael.Gregory/files/Bio%20102/Bio%20102 %20Laboratory/Animal%20Diversity/Lopho trochozoans/img012.jpg

21. Class Polychaeta Each segment has a flattened extension called parapodia Gills for breathing www.freewebs.com/.../subclasserrantia.htm

22. http://scienceblogs.com/photosynthesis/Hermodice-carunculata59(c)BNSullivan.jpg

24. Class Oligochaete burrow in mud and sand scavengers www.inhs.uiuc.edu/.../AOGSMNP.OligoIntro.html

25. Class Hirudinea Live on whatever they are “eating” Parastic / blood sucking Sucker at each end aqua.intervet.com/news/2007-11-25.aspx

26. Sipuncula – Peanut Worms Bottom dwellers, many burrow Deposit feeders

27. www.ucmp.berkeley.edu/sipuncula/sipuncula.html www.wildsingapore.com/.../sipuncula.htm

28. Echiuria- Sausage Worms Like the Peanut Worms

30. Pogonophora –Beard Worms Nervous system Muscles Closed CS Lack a digestive system Body Cavity Sexual repro

31. White Tube worm Tube worms www.nematodes.org/.../odl_pogonophora.html Vent community worms, live in tubes Use bacteria in them to manufacture food

32. Chaetognatha- Arrow Worms All the features of a complex org Eyes and a distinct head

33. planktonic vicious carnivores preying on larvae of other animals

35. Lophophorates…colonial worms All the features of complex orgs Lophophore- unique feeding structure with ciliated tentacles –Suspension feeders Bryozoans and Phoronids

36. Phoronids

38. Bryazoans General characteristics lophophores

39. Feather Duster

40. Photomicrograph of Osedax mucofloris, which means bone- eating snot-flower) the new species of marine worm © The Natural History Museum, London 2005. Scientists from the Natural History Museum and Göteborg University in Sweden have discovered a large colony of the worm growing on the bones of a minke whale in the North Sea.

41. WORM SUMMARY Bilateral Symmetry –Animals can be more active and sophisticated Simplest animals with real organs and organ systems Inhabit all environments in the ocean