Dr. Fuller
AP Biology
13 August 2014
Animal Behavior of Isopods
1a) Do terrestrial isopods prefer to stay in a cold or warm environment that is in a neutral (room temperature), mild, or extreme temperature difference from room temperature?
1b) If the isopods prefer to be in a mildly warm environment, then when they are randomly placed between a warm and cool chamber with only one warm and cold pack (mild temperature difference) on each end of the chamber and are able to move freely, they would prefer to move to the mild warmer side of the chamber the fastest
1c) At the end of this experiment, I hope to learn the behavioral instincts of the terrestrial isopods and what they prefer what the ideal environment for them is, whether it …show more content…
is warm or cold and if they prefer a neutral (room temperature), mild, or extreme temperature difference from room temperature.
2) Materials:
• One isopod
• One chamber
• Warm pack (2)
• Cold pack (2)
• Heating lamp (if needed)
• Black construction paper (if needed)
Procedure:
1.
First start by seeing how the isopod reacts in a chamber with both sides being room temperature (neutral temperature difference). To set up the chamber place an ending point that is equidistant from where the isopod is placed on both sides of the chamber.
2. Put the isopod in the middle of the chamber (the tube) where it is equal distance from each end of the chamber.
3. Observe and record how fast (in seconds) the isopod moves to one of side of the chamber and settles at or goes past the ending point in the chamber that is equidistant on both sides from where the isopod was originally placed.
4. To see how the isopod reacts with varying temperatures and extremes of the environments, put the warm pack on one end of the chamber and put the cold pack on the other end. This is the mild temperature difference.
5. Record and observe where the isopod goes and how fast (in seconds) it takes for the isopod to reach the ending point.
6. After experimenting with the one warm and cool pack, put another warm and cool pack with the other packs and test the isopod again. This is the extreme temperature …show more content…
difference.
7. If the temperature in the chamber does not change when another warm and cold pack is added, add a heat lamp on the warm side and make the cold side as dark as possible using black construction paper.
8. Record and observe where the isopod goes and how fast (in seconds) it takes for the isopod to reach the ending point.
9. Observe the recorded data and put the data in a bar graph and create a conclusion that matches with the data.
Constant:
The constant in the experiment would be the environment of the chamber as the same chamber is being used for all the trials with nothing being changed except the temperature.
Variables:
-Independent: The independent variable in the experiment is time as the time the isopod reaches to the end point in the chamber will be change for each trial that is done.
-Dependent: The dependent variable in the experiment is the temperature as the varying temperatures may affect how long the isopod will reach to the end point.
Control:
The control test is the isopod tested in a room temperature environment on both sides of the chambers to see how long the isopod would move in neutral temperature.
Amount of trials:
Including the control temperature, there will be three trials. The first trial would be in a neutral environment (room temperature) on both sides. The second trial is with one warm pack on one side and one cold pack on the other side of the chamber, which is the mild temperature difference. The third trial consists of two warm packs and two cold packs on the opposite side, which is the extreme temperature difference. The purpose of having three trials shows what type of environment (neutral, mild, or extreme temperature difference from room temperature) isopods prefer to be in based on how fast they move and how the isopods react to each trial, as well as if they prefer a cooler or warmer environment in relation to how much
intensity.
Organization of data:
The data will be organized in a bar graph with the different extremes of the environment on the x-axis and the time on the y-axis in 30 second increments. Also note if the isopod goes to the warm or cool side of the chamber when testing the different extremes when labeling the x-axis.