Ctenophores

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Ctenophores

  1. 1. Phylum: Ctenophores Nathalie Musey Period 2
  2. 2. <ul><li>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! </li></ul>
  3. 3. <ul><li>Ctenophores can be found in varying marine environments worldwide, from tropical to polar and coastal to ocenic </li></ul>
  4. 4. <ul><li>Ctenophores enjoy taking long swims, beating their cilia in regular pattern, in the evenings allowing them to display their bioluminescence </li></ul><ul><li>They also enjoy fine meals ranging from microscopic larvae and plankton to small crustaceans </li></ul>
  5. 5. <ul><li>Little is known about the biological and ancestral origins of the ctenophores </li></ul><ul><li>Recent fossil findings differ from living ctenophores, making it difficult to create phylogenetic affinities. </li></ul>
  6. 6. Specialized Structures <ul><li>8 “comb rows” of fused cilia along the sides of the animal </li></ul><ul><li>Sticky cells, colloblasts, to capture prey </li></ul><ul><li>Few species have special mouth cilia used for biting gelatinous prey </li></ul><ul><li>Bottom living (benthic) ctenophores are brightly pigmented, usually reflecting the color of their substrate </li></ul><ul><li>Balance receptor, the statocyst, helps maintain upright positioning when needed </li></ul>
  7. 7. <ul><li>Hermaphrodite ctenophore </li></ul><ul><li>Seeking: Hermaphrodite ctenophore that is well adapted to deep sea environment, can swim quickly and capture food effectively </li></ul><ul><li>Enjoys: Look swims at night </li></ul><ul><li>Prefers: bright bioluminescence and red pigmentation </li></ul><ul><li>Call: 1-800-comb jelly </li></ul>
  8. 8. Bibliography <ul><li>Anisimmov, Michael. &quot;What is a Ctenophore?&quot; 19 Apr. 2009 <http://www.wisegeek.com/what-is-a-ctenophore.htm>. </li></ul><ul><ul><li>Special adaptaions (balance receptors) </li></ul></ul><ul><li>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>. </li></ul><ul><ul><li>Special adaptations </li></ul></ul><ul><li>&quot;ctenophore.&quot; Encyclopædia Britannica . 2009. Encyclopædia Britannica Online. 19 Apr. 2009 <http://www.britannica.com/EBchecked/topic/145454/ctenophore>. </li></ul><ul><ul><li>Basic anatomy and life cycle </li></ul></ul><ul><li>Mills, C. E. &quot;Ctenophores.&quot; June 2001. 19 Apr. 2009. </li></ul><ul><ul><li>Habitat, diet, sex/life cycle </li></ul></ul>

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