Crustacea Subphlyum

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By: Trisha Lala
Periods 3&4

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Crustacea Subphlyum

  1. 1. Why to love the subphylum Crustacea By: Trisha Lala
  2. 2. Why are they special? <ul><li>Crustaceans from the subphylum crustacea are a part of the phylum arthropod. They are characterized by their chitinous exoskeleton, motility, and segmented body plans. </li></ul>
  3. 3. Where can they be found and what do they need? <ul><li>Humid environments on land </li></ul><ul><li>Seas and oceans </li></ul><ul><li>Freshwater </li></ul><ul><li>Food </li></ul><ul><li>Water </li></ul><ul><li>Oxygen </li></ul>
  4. 4. What are their favorite activities? <ul><li>Swimming </li></ul><ul><li>Walking </li></ul><ul><li>Sexually Reproducing </li></ul>
  5. 5. What advancements do they have and what advantage do they get from that? <ul><li>Bilateral symmetry- more controled motility </li></ul><ul><li>Three germ layers: ectoderm, mesoderm, and endoderm- more complex and effective body systems </li></ul><ul><li>Coelmate- specialized organ systems are present </li></ul><ul><li>Cephalization- able to process information </li></ul>
  6. 6. What specialized structures do they have? <ul><li>Chitinous exoskeleton- protection </li></ul><ul><li>Branched limbs- easier motility </li></ul><ul><li>1 pair of compound eyes and 2 antenae- advanced sensory perception </li></ul>
  7. 7. What is their ideal mate? <ul><li>Same species </li></ul><ul><li>Good size (no deformaties) </li></ul>
  8. 8. What is special about their body systems and behavior? <ul><li>Feeding- small plants and animals </li></ul><ul><li>Respiration- Diffusion for smaller crustaceans and larger ones use gills </li></ul><ul><li>Circulation- Open circulatory system with a dorsal heart into which blood flows though paired openings (ostia) </li></ul>
  9. 9. Body Systems continued <ul><li>Excretory- Antennal and maxillary gland that have the same basic structure: end sac and convoluted duct which may expand into bladder </li></ul><ul><li>Nervous- Dorsal brain with connective nerves passing around anterior end of digestive tract; ventral nerve cord with ganglion in each body segment </li></ul><ul><li>Reproduction- Sexually (some are hermaphrodites), most have separate sexes that are distinguished by appendages on abdomen called pleopods (swimmerets); 1st (sometimes 2nd) pleopods are specialized for sperm transfer; they return to sea to release eggs </li></ul>
  10. 10. Bibliography <ul><li>&quot;Crustaceans.&quot; Kid Port . <http://www.kidport.com/reflib/Science/Animals/Crustaceans.htm>. </li></ul><ul><li>&quot;Crustaceans.&quot; The Sea . 27 Apr. 2008 <http://www.seasky.org/reeflife/sea2e.html>. </li></ul><ul><li>&quot;Introduction to the Crustaceamorpha.&quot; UMCP . University of Berkely California. 27 Apr. 2008 <http://www.ucmp.berkeley.edu/arthropoda/crustacea/crustaceamorpha.html>. </li></ul><ul><li>Myers, Phil. &quot;Subphlyum Crustacea.&quot; Animal Diversity Web . University of Michigan Museum of Zoology. 27 Apr. 2008 <http://animaldiversity.ummz.umich.edu/site/accounts/information/Crustacea.html>. </li></ul>

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