1. Tuesday-November 29th, 2011 FIND A PARTNER AND SIT WITH THEM.
What is an extremophile?
What is the difference between the independent and dependent variable in an experiment?
Announcements:
Presentations on Friday
Lab continues on Thursday
Test on Thursday-December 15th, 2011

2. Brine shrimp photo from top down
Hatch-a-Cyst Lab
Brine shrimp photo from top down

3. Brine Shrimp Background
Tiny crustaceans that live in salt water
Females reproduce in two ways:
Favorable Conditions: Produce live embryos
Stressful Conditions: Produce dormant cysts
Cysts remain dormant for years or until conditions improve
Each fall, fisherman collect and sell cysts
Generates $40-60 million in revenue
Fed to fish and shellfish

4. Brine Shrimp Life Cycle

5. Great Salt Lake MapView

6. Great Salt Lake Satellite View

7. Great Salt Lake

8. What are some of the abiotic factors of the Great Salt Lake?
Salinity
Light Amount
UV Exposure
pH (Acidity)
Temperature
Oxygen Levels (dissolved)
Pollution
WHICH FACTOR WILL YOU CHANGE (I.V.)?

9. Abiotic Factors to Vary (How and Why)
Salinity
Add or remove salt
Optimum salinity is 9%
Light
Use foil, paper or fabrics to cover
Attracted to light
UV Exposure
UV Light
Hatch at high elevation levels pH
Vinegar and Baking Soda
Effects separation from embryos
Temperature
Sunlight or Refrigerator
Tolerate various temperatures
Oxygen Levels
Seal the container
Do not need much oxygen
Pollution
Insecticides and Rubbing Alcohol
Runoff

10. For this lab, you will….
Alter one condition of the Brine Shrimp’s environment to see how this effects the cyst’s hatch rate.
You will create a control (baseline)
You will create an experimental condition (alter one factor)
You will compare the results to measure a difference

11. Today you and a partner will….
Write up the experimental design
Submit your write up to Mr. Price for approval
Design a data table to record your results
Come up w/a rough draft of a graph to display results
You will measure your success by dividing the amount of cysts introduced by the amount of shrimp hatched (#shrimp hatched/total cysts)x100 = % success