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2. worms

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2. worms

  1. 1. Between the Tides<br />
  2. 2. The Sponges: Phylum Porifera<br />e.g. Haliclona sp<br />Multicellular<br />No tissues<br />Sessile <br />Filter feeders<br />
  3. 3. The Sponges: Phylum Porifera<br />Characterized by their spicules<br />Calcium<br />Spongin<br />silica<br />
  4. 4.
  5. 5. The Sponges: Phylum PoriferaFilter Feeders<br />
  6. 6. The Sponges: Phylum Porifera<br />Sessile?<br />Not Always<br />Thanks to their symbiotic friend the Hermit crab <br />
  7. 7. The Sponges: Phylum Porifera<br />Sponges: defense<br />many sponges produce toxins and have bright warning colouration<br />some sponge toxins work against other sponges competing for space<br />
  8. 8. The Sponges: Phylum Porifera<br />
  9. 9. The Sponges: Phylum Porifera<br />Glass Sponge Reefs<br />
  10. 10. The Sponges: Phylum PoriferaOur Reefs<br />
  11. 11. Sea Anemone and JelliesPhylum Cnidaria<br />
  12. 12. Sea Anemone and JelliesPhylum Cnidaria<br />
  13. 13. Sea Anemone and Jellies - Phylum CnidariaClass Scyphozoa<br />
  14. 14. Sea Anemone and Jellies - Phylum CnidariaClass Scyphozoa<br />
  15. 15. Sea Anemone and Jellies - Phylum CnidariaClass ScyphozoaAlternations of Generations<br />
  16. 16. Sea Anemone and Jellies - Phylum Cnidaria Class Hydrozoa<br />
  17. 17. Sea Anemone and Jellies - Phylum Cnidaria Class Hydrozoa<br />
  18. 18. Sea Anemone and Jellies - Phylum Cnidaria<br />
  19. 19. Sea Anemone and Jellies - Phylum CnidariaClass Anthozoa<br />Jellies not present during their lifecycle<br />Have stinging cells called nematocysts<br />Carnivores<br />Can move on their pedal foot and some can swim. <br />Corals also found within this class<br />
  20. 20.
  21. 21. Anemone Reproduction<br />
  22. 22. Sea Anemone and Jellies - Phylum CnidariaClass AnthozoaSplitting Anemone<br />
  23. 23. Sea Anemone and Jellies - Phylum CnidariaClass AnthozoaSwimming Anemone<br />
  24. 24. Sea Anemone and Jellies - Phylum CnidariaClass Anthozoa<br />
  25. 25. FlatwormsPhylum Platyhelminthes<br />
  26. 26. FlatwormsPhylum Platyhelminthes<br />Bilaterally symetrical<br />Dorsoventrally flattened<br />Very motile<br />Digestive system with a mouth but no anus<br />No circulatory system<br />Do have an excretory system<br />Cephalization<br />
  27. 27. FlatwormsPhylum Platyhelminthes<br />
  28. 28. FlatwormsPhylum PlatyhelminthesSwimming<br />
  29. 29. FlatwormsPhylum PlatyhelminthesHermaphroditic<br />
  30. 30. FlatwormsPhylum PlatyhelminthesRegenerative<br />
  31. 31. Ribbon Worms – Phylum Nemertea<br />
  32. 32. Ribbon Worms – Phylum Nemertea<br />Bilateral<br />Movement via mucus, cilia and muscles<br />Carnivores<br />Mouth and anus<br />Circulatory and excretory system<br />
  33. 33. Ribbon Worms – Phylum Nemertea<br />Unusual Characteristic<br />Muscular eversible proboscis<br />Rynchocoel<br />
  34. 34. Ribbon Worms – Phylum Nemertea<br />
  35. 35. Ribbon Worms – Phylum Nemertea<br />
  36. 36. Ribbon Worms – Phylum NemerteaProboscis<br />
  37. 37. Worms with LegsPhylum Annelida<br />
  38. 38. Worms with Legs - Phylum AnnelidaNereissp.<br />Phylum also includes earth worms and leeches<br />Segmented bodies and organs<br />Motile or sessile<br />Carnivores with jaws<br />Epitoky<br />
  39. 39. Worms with Legs - Phylum Annelida<br />
  40. 40. Worms with Legs - Phylum AnnelidaClass Polychaeta<br />
  41. 41. Worms with Legs - Phylum AnnelidaClass Polychaeta<br />
  42. 42. Worms with Legs - Phylum Annelida Class Polychaeta<br />
  43. 43. Worms with Legs - Phylum AnnelidaEudistyliavancouverii<br />
  44. 44. Worms with Legs - Phylum AnnelidaEpitoky<br />
  45. 45. Worms with Legs - Phylum AnnelidaEpitoky<br />
  46. 46. Worms with Legs - Phylum AnnelidaScale worms - free living and symbiotic <br />
  47. 47. Phylum Mollusca<br />Almost all have the following in common:<br />Mantle<br />Foot<br />radula<br />
  48. 48. Whelks, Nudibranchs and Limpets collectively known as Gastropods<br />
  49. 49. Nucella sp.<br />90 – 180 o Torsion<br />Shells smooth or fringed (in sheltered waters)<br />Some may develop fringe in the presence of predators<br />Drill and feed on barnacles<br />
  50. 50. Archidoris sp.<br />
  51. 51. Rostanga and Aeolidia<br />Lost torsion and shell during development<br />Feed on sponges and anemones<br />Incorporate spicules or nematocysts for defense<br />
  52. 52. Tectura sp<br />Shell torsion lost during development<br />Algae grazers<br />Very territorial with other limpets<br />
  53. 53. Chitons also called Polyplacophora<br />
  54. 54. Mopalia sp.<br />8 shell plates<br />Bound by a leather girdle so that they can roll up into a ball<br />Graze on algae<br />No eyes or tentacles but have light sensors built in their shell<br />
  55. 55. Katharina sp.<br />
  56. 56. Phylum Arthropoda<br />More than 900,000 known species<br />Marine, fresh water, terrestrial and airborne<br />Temperature extremes<br />Have an exoskeleton<br />Jointed appendages<br />molt<br />
  57. 57. Pycnogonid – sea spider<br />Body not divided into distinct regions<br />Very slow moving<br />Appendages at the head which are used to groom the opposite sex’s legs and are used by the males to carry fertilized eggs<br />
  58. 58. Isopods, Amphipods, Shrimp and Crabs collectively known as Crustaceans<br />
  59. 59. Sea StarPhylum Echinodermata<br />Penta radial<br />An endo skeleton made up of Calcareous ossicles<br />Tube feet<br />Connective tissue is mutable meaning it can rapidly change from stiff to fluid.<br />
  60. 60. Sea StarPhylum Echinodermata<br />Penta radial<br />An endo skeleton made up of Calcareous ossicles<br />Tube feet<br />Connective tissue is mutable meaning it can rapidly change from stiff to fluid.<br />

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