Phylum Cnidaria

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Phylum Cnidaria

  1. 1. Phylum Cnidaria (Polyps) Reporters Alvior, Joeram Segura, Jhomar Villocino, Kathlynn
  2. 2. The Cnidarians <ul><li>Contains some 10,000 species </li></ul><ul><li>2 body plans </li></ul><ul><li>Medusa Form </li></ul><ul><li>Polyp Form </li></ul>
  3. 4. Polyps <ul><li>are approximately cylindrical, elongated on the axis of the body. </li></ul><ul><li>is a sessile form which attaches to the sea floor and often forms large colonies. </li></ul>
  4. 5. http://upload.wikimedia.org/wikipedia/commons/thumb/4/49/Coral_polyp.jpg/250px-Coral_polyp.jpg
  5. 6. Anthozoans <ul><li>Defining Characteristics: </li></ul><ul><li>Absence (loss) of medusa stage </li></ul><ul><li>Absence of operculum and cnidocil </li></ul><ul><li>Mitochondrial DNA is circular </li></ul>
  6. 7. <ul><li>Presence of ciliated groove in the pharyngeal wall leading from the mouth. </li></ul><ul><li>Coelenteron partitioned by distinct sheets of tissues. </li></ul>
  7. 9. http://upload.wikimedia.org/wikipedia/commons/thumb/0/06/PillarCoral.jpg/200px-PillarCoral.jpg Common Name: Pillar coral Scientific Name: Dendrogyra cylindricu
  8. 10. Octocorallia <ul><li>Defining Characteristics: </li></ul><ul><li>Polyps bear 8 tentacles </li></ul><ul><li>Are subdivided by 8 complete mesenteries </li></ul>
  9. 11. http://www.palaeos.com/Invertebrates/Cnidaria/Images/scotinus.jpg <ul><li>Scientific Name: Ptilosarcus gurneyi </li></ul>
  10. 12. Hexacorallia <ul><li>Defining Characteristics: </li></ul><ul><li>Possess numerous tentacles </li></ul><ul><li>6 pairs of primary mesenteries </li></ul>
  11. 14. Scientific Name: Anemonia viridis http://actiniaria.com/img/anemonia_viridis.jpg
  12. 15. Hydrozoa <ul><li>Greater representation of the polyp morph on the Life Cycle. </li></ul><ul><li>predatory animals which can be solitary or colonial and which mostly live in saltwater </li></ul>
  13. 17. Hydra <ul><li>Common freshwater hydras are solitary polyps. </li></ul><ul><li>It is a cylindrical tube with the aboral end drawn out into a slender stalk, ending in a basal (or pedal) disc for attachment. </li></ul>
  14. 19. Common Name: Hydra Scientific Name: Hydra Vulgaris Common Name: Hydra Scientific Name: Hydra Vulgaris
  15. 20. Scientific Name: Obelia dichotoma http://faculty.clintoncc.suny.edu/faculty/michael.gregory/files/bio%20102/bio%20102%20lectures/animal%20diversity/lower%20invertebrates/Obelia_colony_X_40.jpg
  16. 22. Classification
  17. 23. Dendrogyra cylindricu <ul><li>Kingdom: Animalia Phylum:Cnidaria Class:Anthozoa Order:Scleractinia Suborder:Faviina Family:Meandrinidae Genus: Dendrogyra Species: D. cylindricus </li></ul>
  18. 24. Ptilosarcus gurneyi <ul><li>Kingdom: Animalia </li></ul><ul><li>Subkingdom: Radiata </li></ul><ul><li>Phylum: Cnidaria </li></ul><ul><li>Class: Anthozoa Subclass: Octocorallia </li></ul><ul><li>Order: Pennatulacea Suborder:Subselliflorae </li></ul><ul><li>Family: Pennatulidae </li></ul><ul><li>Genus: Ptilosarcus </li></ul>
  19. 25. Anemonia viridis <ul><li>Phylum: Cnidaria Class: Anthozoa Subclass: Hexacorallia Superorder: Hexactiniida Order: Actiniaria Suborder: Nynantheae (Thenaria : Endomyaria) Family: Actiniidae </li></ul><ul><li>Species: : Anemonia viridis </li></ul>
  20. 26. Hydra Vulgaris <ul><li>Kingdom:Animalia Subkingdom:Eumetazoa Phylum:Cnidaria Subphylum:Medusozoa Class:Hydrozoa Subclass:Leptolinae Order:Anthomedusae Suborder:Capitata Family:Hydridae Genus: Hydra </li></ul>
  21. 27. Obelia dichotoma <ul><li>Kingdom:Animalia Subkingdom:Eumetazoa Phylum:Cnidaria Subphylum:Medusozoa Class:Hydrozoa Subclass:Leptolinae Order:Leptomedusae Suborder:Proboscidoidea Family:Campanulariidae Genus: Obelia </li></ul>
  22. 28. References <ul><li>http://en.wikipedia.org/wiki/Polyp/last modified on 27 February 2009, at 00:24 </li></ul><ul><li>http://taxonomicon.net/ </li></ul><ul><li>http://upload.wikimedia.org/wikipedia/commons/thumb/4/49/Coral_polyp.jpg/250px-Coral_polyp.jpg </li></ul><ul><li>http://faculty.clintoncc.suny.edu/faculty/michael.gregory/files/bio%20102/bio%20102%20lectures/animal%20diversity/lower%20invertebrates/Obelia_colony_X_40.jpg </li></ul><ul><li>http://actiniaria.com/img/anemonia_viridis.jpg </li></ul><ul><li>http://upload.wikimedia.org/wikipedia/commons/thumb/0/06/PillarCoral.jpg/200px-PillarCoral.jpg </li></ul>
  23. 29. <ul><li>Humann, P. 1993. Reef coral identification.Florida, Caribbean, Bahamas. Jacksonville, Florida, New World Publications,Inc. Superb color photographs and accurate identifications make this by far the best field guide to corals now available; includes sea grasses and some algae. </li></ul><ul><li>Karlson, R. H., and L. E. Hurd. 1993. Disturbance, coral reef communities, and changing ecological paradigms. Coral Reefs. 12:117–125. The first article of an entire issue devoted to effects of major disturbances, such as El Niño, hurricanes, and floods . </li></ul>

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