Do Different Levels of Salt Affect Brine Shrimp?

Overview

Objectives/Goals The purpose of this project was to discover if different levels of salt affect Brine Shrimp. I built 4 different brine shrimp habitats my controls are Oxygen given, amount of water, same size habitat, food given, temperature, and duration of testing. I am testing to see which salinity level works best using a hydrometer. Brine Shrimp can tolerate a vast range of salinity from 25 to 250 grams per liter, with an optimal range of 60 to 100 grams per liter. They prefer a range from 30 to 35 grams per liter, the problem is Brine Shrimp encounter more predators at that level of salinity. Many different levels of salinity can have an effect on Brine Shrimp different such as, difference in color, sizes, and shapes. Currently the only possibility on how Brine Shrimp environments are going to get a higher salinity level, is through a drought. Because during a drought the water wouldn't stay in the environment, the salt will, which increases the salinity level. Methods/Materials Materials : > 4 Teaspoons of Brine Shrimp eggs; > 4 Two liter bottles; > 4 Air pumps; > 16.8 grams of spirulina powder; > 6.8 liters of water (1.7 per habitat); > 9 Petri dishes; > 2 Pipets; > 1 lamp; > 1 Microscope; > 4 mason jars; > 4 pieces of tubing. Procedure: Step 1: Organise materials Step 2: Drill holes on top of the mason jars Step 3: Fit tubing through drilled hole Step 4: Attach other side of tubing to air pump Step 5: Use Hydrometer and salt to get salinity levels of 0, 20, 30, and 44 Step 6: Get a teaspoon of Brine Shrimp eggs and put one into each mason jar Step 7: Turn air pump on Step 8: Make sure they have a light source Results The data was that the salinity of 44 had the best result in terms of most amount of Brine shrimp, least amount of dead Brne shrimp, and least amount of eggs unhached. Conclusions/Discussion In conclusion, my hypothesis, #Brine Shrimp in salinity levels of 30 and 44 parts per thousand will have

Competition history

• CSEF 2017 Zoology · Entry J2319

Resources

• CSEF project summary ↗

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