1. Marine Invertebrates (Part 3)

2. Phylogenetics Protostomes (mouth first) Deuterostomes (mouth second) Embryo cell division simple ----------------------------  complex

3. Lophophorates  Common feeding structure – lophophore (ciliated tentacles in rounded shape)  Three phyla:  Phoronida (worm-like)  Brachiopoda (clam-like)  Bryozoa/Ectoprocta (coral-like)

4. Bryozoans http://www.dnr.sc.gov/marine/sertc/gallery.htmhttp://www.microscopy-uk.org.uk/micropolitan/fresh/other/bryozoa.jpg zooids

5. Bryozoans http://www.nhm.ac.uk/research-curation/research/projects/bryozoans/images/pdt2.jpg http://dominique.millet2.free.fr/image/inver21a.jpg http://files.myopera.com/nielsol/blog/stevns.jpg

6. Arrow Worms  Phylum Chaetognatha  only marine  few species  but abundant  important predators http://pharyngula.org/images/chaetognathhead.jpghttp://www.microscopy-uk.org.uk/mag/imgjan00/CHAET2b.JPG

7. Echinoderms  Phylum Echinodermata (“spiny skinned”)  All are marine  Larvae have bilateral symmetry, but adults have 5-way radial symmetry NOAA http://raven.zoology.washington.edu/embryos/

8. Echinoderms  Distinctive features: water vascular system and tube feet (hydraulic) http://aspire.mlml.calstate.edu/aspire04/updates/nov/25nov/Acodontaster%20tube%20feet-reduced.jpghttp://www.vsf.cape.com/~jdale/science/movement.htm

9. Echinoderms Five classes:  Asteroidea - Sea stars (starfish)  Ophiuroidea - Brittle stars  Echinoidea - Sea urchins  Holothuroidea - Sea cucumbers  Crinoidea - Crinoids (sea lilies, feather stars)

10. Sea Stars http://www.habitas.org.uk/marinelife/index.html http://www.dnr.sc.gov/marine/sertc/gallery.htm http://www.jaxshells.org/wmf52.jpg

11. Sea Stars

12. NOAA http://farm1.static.flickr.com/44/140565077_c0501c33c3.jpg?v=0http://static.px.yelp.com/bphoto/XrIxRtWzS1GCygpOw32LlQ/l

13. Brittle Stars http://www.dnr.sc.gov/marine/sertc/gallery.htm http://scilib.ucsd.edu/sio/nsf/fguide/paul-cziko-astrotoma1.jpghttp://www.biosbcc.net/ocean/marinesci/03ecology/flimg/10835treDSCN6008.jpg

14. Sea Urchins http://www.jaxshells.org/mayp3.jpg, test.jpg http://www.edge-of-reef.com/echinoidi/ECHheterocentrotus-mamm1.jpg

15. Sea Urchins http://www.marinebio.net/marinescience/03ecology/flimg/09924treDSCN7585.jpg

16. Sea Cucumbers NOAA http://www.dnr.sc.gov/marine/sertc/gallery.htm http://elvis.rowan.edu/~greenspa/albums/okinawa_scuba_2004/IMG_4487.jpg

17. Crinoids NOAA http://www.jcu.edu.au/soc/dive/outer-reefs/128x96/Crinoid%202%20June%202002.jpg NOAA

18. Deep-Sea Echinoderms http://www.whoi.edu/science/B/people/sbeaulieu/H2O_new/H2O_echinoderms.html http://www.mar-eco.no/ NOAA

19. Hemichordates  “Missing link” between echinoderms and chordates  Acorn worms ProtostomesDeuterostomes Embryo cell division

20. Hemichordates http://www.auburn.edu/academic/classes/zy/0301/Topic3/Topic3.html http://www.mar-eco.no/  2 common features with chordates

21. Invertebrate Chordates  Phylum Chordata  Subphylum Urochordata  Tunicates, salps, larvaceans  Subphylum Cephalochordata  Lancelets  Subphylum Vertebrata  Fishes, amphibians  Reptiles, birds  Mammals

22. Invertebrate Chordates  Common features of all chordates:  Dorsal (back) hollow nerve cord  Notochord (flexible support rod, becomes backbone in vertebrates)  Gill slits in the pharynx  Post-anal tail  Ventral heart Human embryo 31-35 days

23. Tunicates (Sea Squirts)  Phylum Chordata  Subphylum Urochordata  Have all chordate features as larva, lose most as adults  Benthic as adults

24. Tunicates (Sea Squirts) http://www.aboututila.com/Reviews/Charlie-Johnson/Photos/Bluebell-Tunicates.jpghttp://img.dailymail.co.uk/i/pix/2008/02_03/seacreatures2AP_600x578.jpg

25. Salps, Larvaceans  Phylum Chordata  Subphylum Urochordata  Keep some/all chordate features as adults  Planktonic NOAA

26. Lancelets  Phylum Chordata  Subphylum Cephalochordata  Have all chordate features as adults, just lack backbone  Benthic http://bioweb.uwlax.edu/zoolab/Table_of_Contents/Lab-9a/Lancelets/Lab_9a-03a.jpg

27. * * * typo in 7 th ed book (correct info here) Level of organization Symmetry CellularNone TissueRadial TissueBi-radial Organ systemBilateral Organ systemBilateral Organ systemBilateral Organ systemBilateral Organ systemBilateral Organ systemBilateral Organ systemRadial (as adult) Organ systemBilateral Organ systemBilateral