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Brine shrimp


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Brine shrimp

  1. 1. Brine Shrimp <ul><li>By Carole Parsons </li></ul><ul><li>and Sunny Forker </li></ul><ul><li>11/19/2005 </li></ul>
  2. 2. SC Standards <ul><li>Explain how limiting factors (including food, water, space, and shelter) affect populations in ecosystems. </li></ul><ul><li>Summarize the composition of an ecosystem, considering both biotic factors (including populations to the level of microorganisms and communities) and abiotic factors. </li></ul><ul><li>Explain how human activity (including conservation efforts and pollution) has affected the land and the oceans of Earth. </li></ul>
  3. 3. Artemia franciscana <ul><li>Found all over the world in salt water lakes. </li></ul><ul><li>Also found in salt flats (places where salt water may be evaporated commercially to produce salt). </li></ul><ul><li>Distantly related to the shrimp we eat. </li></ul>
  4. 4. Scientific Oddity <ul><li>Can exist in a sort of suspended animation inside their tiny eggs for many years. </li></ul><ul><li>Sold as an aquarium “food.” </li></ul>
  5. 5. <ul><li>Click the information button to learn about the life of brine shrimp </li></ul><ul><li>These small crustaceans shed or molt their exoskeletons in order to grow. </li></ul>
  6. 6. Anatomy <ul><li>What other animals have compound eyes? </li></ul>
  7. 7. In Their Natural Habitat <ul><li>The cloud you see in the this photo, are actually brine shrimp </li></ul><ul><li>Flamingos find them to be quite a tasty meal </li></ul>
  8. 8. <ul><li>Look at brine shrimp hatching </li></ul><ul><li>This process takes only a few days </li></ul><ul><li>They grow to maturity in 2-3 weeks </li></ul><ul><li>Experts say they can live up to six months </li></ul>
  9. 9. The Live Cycle of Brine Shrimp
  10. 10. The Sea Monkey Craze <ul><li>In The 1960’s, raising Sea Monkeys was a very popular activity </li></ul><ul><li>Comic book adds were full of silly claims to get kids to buy brine shrimp eggs </li></ul><ul><li>Look at the false advertising on the picture </li></ul>
  11. 11. <ul><li>Guaranteed to live and to grow, this miracle of science has been granted a Patent by the U.S. Government for our astounding discovery of the formula for making instant life. </li></ul><ul><li>The small text in this ad reads as follows: You'll gasp with amazement when you see adorable baby Sea-Monkeys instantly being born alive before your eyes! </li></ul>
  12. 12. Scientific Method <ul><li>Question: Ask a question that can be tested (dependent & independent variables) </li></ul><ul><li>Hypothesis: Educated guess </li></ul><ul><li>Materials: List what is needed to conduct this experiment </li></ul><ul><li>Procedure: Design this investigation. Identify the variable to be tested and how the other variables will be controlled. Write or draw step by step directions. </li></ul><ul><li>Results: Construct tables, graphs, map, model, diagram etc. needed to organize data. </li></ul><ul><li>Conclusion: Answers the question – a summary of results and a statement of how the results relate to the hypothesis. </li></ul>
  13. 13. Variables <ul><li>The independent variable is the variable you purposely manipulate (change). </li></ul><ul><li>The dependent variable is the variable that is being observed, which changes in response to the independent variable. </li></ul><ul><li>The variables that are not changed are called controlled variables . </li></ul>
  14. 14. Ideas for Experiments <ul><li>Do different concentrations of salt affect the rate at which brine shrimp hatch? </li></ul><ul><li>Will brine shrimp eggs hatch in fresh water? </li></ul><ul><li>Will brine shrimp grow in salt water made with table salt (iodized)? </li></ul><ul><li>Does increased acidity (acid rain) affect the hatching rate of the brine shrimp? </li></ul><ul><li>Do increased amounts of light increase or decrease hatching rates? </li></ul><ul><li>Does temperature affect the rate at which brine shrimp hatch? </li></ul><ul><li>View actual video from last year’s class taken with the Digital Blue microscope. You can take pictures and make movies for your project too. </li></ul>
  15. 15. The Design of your Investigation Should: <ul><li>Relate to the problem and the hypothesis </li></ul><ul><li>Test only a single variable </li></ul><ul><li>Describe the procedure </li></ul><ul><li>List materials and equipment needed </li></ul><ul><li>Include a graph or table </li></ul><ul><li>Be presented to the class on a poster </li></ul>
  16. 16. Sources <ul><li> </li></ul><ul><li> </li></ul><ul><li> </li></ul><ul><li>Google image search </li></ul><ul><li> </li></ul>