Brine Shrimp Lab Report

Superior Essays
The Effect of pH Level on the Amount of Brine Shrimp Hatched
By: Maggie Lazaroski and Paloma Diaz
Period 1, January 8 2014

Introduction Paragraph
In this experiment, we will be using brine shrimp to measure the effects of pH on the survival rate of invertebrate creatures. We will use white vinegar and baking soda to alter the level of pH, the white vinegar to make the pH level higher and the baking soda to make the pH lower. We will be feeding the shrimp yeast, which is completely safe for them to be consuming. We will make sure to feed each group of shrimp the same amount of food so that we only have one independent variable. Our independent variable is the pH of the water that the shrimp will be living in, and the dependent variable is the survival rate of the shrimp. Some factors held constant are the hatchery the shrimp were hatched in, the type and amount of food given, the amount of salt used in each trial, and
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The baby brine shrimp hatch during spring from a egg like sphere called a cysts. This cyst contains an embryo which is at a suspended state of metabolism. These eggs were laid in the fall and remained alive during winter. These cysts are essential to the repopulation of the lake after winter. Once the shrimp hatch from the cysts they grow very fast. When they are juveniles they only have one eye but as they get older they develop a second eye. Most of the brine shrimp are females, this is very important because females are able to fertilize their own egg without the need for a male shrimp. This type of method is called parthenogenesis. However once fall comes males are forced to produce cysts for the winter. This type of production requires sexual reproduction, which means that males need to contribute sperm to the egg. This adaptation allows the shrimp to grow in numbers in the Great Salt Lake and maintain genetic

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