Ctenophores
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  • 1. Phylum: Ctenophores Nathalie Musey Period 2
  • 2.
    • Ctenophores (comb jellies) are flexible sea creatures seeking to please others. Transparent, mostly un-pigmented, and only 2 cell layers thick, ctenophores aren’t fussy about looks. Don’t let their small size fool you! Ctenophores are excellent swimmers and their bioluminescence puts on quite a show!
  • 3.
    • Ctenophores can be found in varying marine environments worldwide, from tropical to polar and coastal to ocenic
  • 4.
    • Ctenophores enjoy taking long swims, beating their cilia in regular pattern, in the evenings allowing them to display their bioluminescence
    • They also enjoy fine meals ranging from microscopic larvae and plankton to small crustaceans
  • 5.
    • Little is known about the biological and ancestral origins of the ctenophores
    • Recent fossil findings differ from living ctenophores, making it difficult to create phylogenetic affinities.
  • 6. Specialized Structures
    • 8 “comb rows” of fused cilia along the sides of the animal
    • Sticky cells, colloblasts, to capture prey
    • Few species have special mouth cilia used for biting gelatinous prey
    • Bottom living (benthic) ctenophores are brightly pigmented, usually reflecting the color of their substrate
    • Balance receptor, the statocyst, helps maintain upright positioning when needed
  • 7.
    • Hermaphrodite ctenophore
    • Seeking: Hermaphrodite ctenophore that is well adapted to deep sea environment, can swim quickly and capture food effectively
    • Enjoys: Look swims at night
    • Prefers: bright bioluminescence and red pigmentation
    • Call: 1-800-comb jelly
  • 8. Bibliography
    • Anisimmov, Michael. &quot;What is a Ctenophore?&quot; 19 Apr. 2009 <http://www.wisegeek.com/what-is-a-ctenophore.htm>.
      • Special adaptaions (balance receptors)
    • Collins, Allen. &quot;Introduction to the Ctenophora.&quot; UCMP - University of California Museum of Paleontology . 19 Apr. 2009 <http://www.ucmp.berkeley.edu/cnidaria/ctenophora.html>.
      • Special adaptations
    • &quot;ctenophore.&quot; Encyclopædia Britannica . 2009. Encyclopædia Britannica Online. 19 Apr. 2009 <http://www.britannica.com/EBchecked/topic/145454/ctenophore>.
      • Basic anatomy and life cycle
    • Mills, C. E. &quot;Ctenophores.&quot; June 2001. 19 Apr. 2009.
      • Habitat, diet, sex/life cycle