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Arthropoda Chelicerata

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Arthropoda Chelicerata

  1. 1. Arthropoda Chelicerata (Eight- legged Arthropods) By Sydney Furth & Brenna Banderob 5/19/09 pr. 3 Anoplodactylus evansi (no common name)
  2. 2. Classification <ul><li>Subphylum breaks into classes: </li></ul><ul><li>-Arachnida (arachnids) </li></ul><ul><li>-Merostomata (horseshoe crabs) </li></ul><ul><li>-Pycnogonida (sea spiders) </li></ul>Limulus polyphemus Horseshoe crab
  3. 3. Physical Features <ul><li>Exoskeleton </li></ul><ul><li>Jointed limbs </li></ul><ul><li>Segmented body </li></ul><ul><li>Well developed nervous system </li></ul><ul><li>Eight legs </li></ul><ul><li>No antennae </li></ul><ul><li>No distinct head </li></ul>Pseudopallene ambigua Yellow Pycnogonid
  4. 4. Reproduction <ul><li>Sexual reproduction </li></ul><ul><li>Produces eggs </li></ul>Spider eggs
  5. 5. Feeding & Digestive System <ul><li>Digestive system divided into 3 parts </li></ul><ul><li>-foregut </li></ul><ul><li>-midgut </li></ul><ul><li>-hindgut </li></ul><ul><li>carnivores </li></ul><ul><li>Sometimes eat other arthropods </li></ul>
  6. 6. Circulatory System <ul><li>Heart= long thin tube </li></ul><ul><li>Blood travels through open passages </li></ul><ul><li>Pale blood cells </li></ul><ul><li>- bluish </li></ul><ul><li>If skin broken- blood drains quickly </li></ul>
  7. 7. Respiratory System <ul><li>2 breathing organs </li></ul><ul><li>-tracheae </li></ul><ul><li> -small tubes that carry air through body </li></ul><ul><li>-book lungs </li></ul><ul><li> -cavities in the abdomin </li></ul><ul><li> -air enters from slits on either side </li></ul>
  8. 8. environment <ul><li>land arthropods can be found any where on land </li></ul><ul><li>Water for horseshoe crabs & sea spiders (obviously) </li></ul><ul><li>-fresh and salt water </li></ul>Spider web
  9. 9. Human Interactions <ul><li>Most people go EEEKK at the sight of 8-legged arthropods </li></ul><ul><li>Many spider bites can cause problems, such as death </li></ul><ul><li>Scorpion & spider venom is used to make powerful medicines & vaccines </li></ul>A bite from this caused this Loxosceles reclusa Brown recluse spider
  10. 10. Unique Features <ul><li>Cold blooded </li></ul><ul><li>Most spiders have </li></ul><ul><li>week vision </li></ul><ul><li>Horseshoe crabs (who live in water) come ashore In large numbers to lay eggs </li></ul><ul><li>Horseshoe crabs swim upside-down </li></ul>Centruroides vittatus striped scorpion
  11. 11. Examples <ul><li>Tarantula movie </li></ul>
  12. 12. Works Cited <ul><li>Myers, P. 2001. Chelicerata . Animal Diversity Web. May 19, 2009. <http://animaldiversity. umnz.umich.edu/site/accounts/information /Chelicerata.html> </li></ul><ul><li>Holt, Rinehart, Winston. Animals. Austin, Texas: Harcourt Classroom Education Co., 2002 </li></ul><ul><li>The Invertebrate Animals. May 20, 2009. <http://users.rcn.com/jkimball.ma.ultran et/BiologyPages/I/invertabrates.html> </li></ul><ul><li>Eisen, Stan. Arthropoda chericerata . May 21, 09. <http://www.cbu.edu/~seisen/Arthropoda/sld 014.htm> </li></ul>
  13. 13. <ul><li>Spiders . May 21,09. < http://www.greensmith s.com/spiders.html > </li></ul><ul><li>Thompson, ken. The bumble bee. May 20, 09. < http://www.bioteams.com/2006/04/2 1/the_social_networks.html> </li></ul>

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