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.
[ eniche.net ]
[ Honors Biology 2009 ]
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.
eniche.net © 2009
Copyright Susan Steiner and her students unless otherwise noted.
Home Page   Back

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  ________________________________