nimal Behavior Lab

Partner:
Objective: To examine the responses of isopods to various environmental factors.
Hypothesis: A(n) _______________ environmental condition will inhibit isopod habitation.
Background Info:
- Terrestrial isopods are land dwelling crustaceans that breathe with gills.
- Behaviors of animals involve movement of the animal within its environment.
- Innate behaviors are those that are inherited through generations by natural selection.
- To locate appropriate environments in which to live, isopods use orientation techniques.
- Orientation is the process by which animals position themselves with respect to spatial features of their environments.
- Taxis involves the turning of an animal's body relative to a stimulus.
- Kinesis is random turngin or movement of an animal in relation to a stimulus.
- Isopods prefer an environment that is dark, humid, and cool.
- Isopods need high humidity to keep the membranes of their gills from drying and becoming nonfunctional for gas
exchange.
Materials:
double chamber petri dish pipet small plastic tube
pill/sow bugs spatula filter disks to fit chamber
Optional: (aluminum foil (darkness), plastic bags filled with 1. ice and 2. warm water (temperature), several screens (light vs.
shade), HCl and NaOH (high/low pH), bedding type material (bedding vs. non-bedding)
Methods: 1. a two chambered petri dish was prepared by ______________________________
2. five isopods of relatively similar sizes were guided into a small plastic tube using a spatula.
3. the five isopods were then transfered to the dish.
4. the isopods were observed for 10 minutes and their general appearance, movements, and interactions
with each other were logged at 30 second intervals.
Results: Simply write what you got for data in your data table. Include the number of isopods in each chamber during each
interval. Note any quantity differences in terms of percentages/trends in behavior(s). Use in-text citations to cite each
table/graph etc. (e.g., (table 1).) Make sure the citation is within the sentence.
| Animal Behavior Observation |
Time
(min.-sec.) |
# in Chamber 1 |
# in Chamber 2 |
Other Notes |
| 0 |
|
|
|
| 0:30 |
|
|
|
| 1:00 |
|
|
|
| 1:30 |
|
|
|
| 2:00 |
|
|
|
| 2:30 |
|
|
|
| 10:00 |
|
|
|
Table 1. Orientation in Isopods.
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Copyright Susan Steiner and her students unless otherwise noted.
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Conclusion: The results of this experiment support/do not support (pick one) the original hypothesis. Give your input
about why you think you got the results you did. Add any other input you have. State the the scientific significance of the lab.
Include shortcomings of the experiment (what you would do differently next time). End with suggesting a further study.
Go to 10 minutes
Title: __________________________________________________________________
Label y-axis ________________
________________
Label x-axis ________________________________