Ctenophora

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Ctenophora

  1. 1. 7. Phylum Ctenophora The Comb Jellies-be gentle & put them in a container to see them, so you don’t hurt them
  2. 2. Information• Zooplankton• All marine (no freshwater species)• Transparent, globe or egg shaped jellies• Similar to but are not considered jellyfish
  3. 3. Anatomyhttp://www.youtube.com/watch?v=G7WT81ukHZE• Radial Symmetry• Up to a few cm (about 4 inches) long• 8 rows or bands of cilia combs that the jelly beats together to help it move, flashing while it goes• Body is >95% water• Body is only 2 cells deep with an open center• No stingers
  4. 4. Feeding• http://www.youtube.com/watch?v=1xkNPp6mzzI• Voracious predators (up to 10 x their weight/day)• Sticky tentacles called colloblasts help capture zooplankton• Important predator of copepods and fish larvae• Delicious to sea turtles
  5. 5. Reproduction• Hermaphrodites• External fertilization and development• Larvae are planktonic
  6. 6. Reproduction• Hermaphrodites• External fertilization and development• Larvae are planktonic

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