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Lab 11 Animal Behavior

By Bill Cole,2014-01-31 04:42
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Lab 11 Animal Behavior

    Lab 11 Animal Behavior

Introduction:

    Ethology is the study of animal behavior. An animal’s behavior is its response to sensory input. There are three types of behaviors: orientation, agonistic, and mating. Orientation behaviors take the animal to its most favorable environment. Taxis is when an animal moves toward or away from a stimulus. Taxis is often characterized by light, heat, moisture, sound, or chemicals. Kinesis is another type of movement that involves orientation. Kinesis is a movement that is random and doesn’t involve a stimulus. So an

    animal would respond to light by moving everywhere in random directions.

    Agonistic behavior is when animals respond to each other in aggressive or submissive movements. Like the hair on dogs backs when they get ready to fight. Another excellent example is the Betta fish, which is sometimes studied in labs.

    Mating behaviors are activities that involve finding, courting, and mating with a member of the same species. An example would be a peacock fluffing up its feathers to attract females.

    Hypothesis:

    Pill bugs will prefer the wet side to the dry side of the petri dishes because they are used to living in dark moist conditions, such as under rocks or in rotting trees. Materials:

    Materials used in this experiment involved: a double petri dish combination, 10 pillbugs, bedding material, scissors, pencils, 2 pieces of filter paper, a piece of black construction paper, and a watch.

    Methods:

    Place 10 pillbugs in the petri dishes along with a little bedding material in each container. Observe them for about 10 minutes noting any observations that are characteristic to the bugs. Once that is done, take a piece of filter paper and soak it in water, then put the wet piece in the bottom of one of the containers. Put the other dry paper in the bottom of the other container. Put 5 pillbugs on each side and count how many bugs there are on each side every 30 seconds for 10 minutes.

    Our designed experiment involved the same methods except substituting filter paper with a piece of black construction paper. Cut out the circular paper from a sheet of black paper

    and put it in one of the containers along with some bedding material. Place 5 pillbugs on

    each side and count how many there are on each side every 30 seconds for 10 minutes.

    Results:

    Table 11.1

    Time (mins) Number in wet Number in dry

    Chamber Chamber

    0 5 5 .5 9 1 1.0 8 2 1.5 8 2 2.0 9 1 2.5 10 0 3.0 9 1 3.5 7 3 4.0 9 1 4.5 9 1 5.0 8 2 5.5 7 3 6.0 9 1 6.5 7 3 7.0 7 3 7.5 7 3 8.0 8 2 8.5 9 1 9.0 7 3

    9.5 8 2 10.0 9 1

    Table 11.2

    Time Number in wet Number in dry

    (Mins) Chamber Chamber 0 5 5 .5 9 1 1.0 6 4 1.5 7 3 2.0 5 5 2.5 6 4 3.0 5 5 3.5 7 3

    4.0 6 4 4.5 8 2 5.0 3 7 5.5 2 8 6.0 6 4 6.5 0 10 7.0 2 8 7.5