wanted: isopods! 5 - 10 per person look under moist (no wet) rocks, mulch put in a container, air is...
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WANTED: ISOPODS!
• 5 - 10 per person• Look under MOIST (no wet) rocks, mulch
• Put in a container, air is good
• Wet a paper towel w/ the WONDER MOLECULE
• Maybe a slice of potato
• VOILA!! A rolleypolley house fit for royalty
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ISOPODS!
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ETHOLOGYAnimal behavior
Dr. Jane Goodall
Primatol
o
gist
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WHAT HAPPENS in an animals
existence?
WHY does
that
behavior
happen i
n
the
animal’s
existenc
e?
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behavior
s
are
innate o
r
behavior
s
are
learned
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LIMITING
FACTORS
determin
e a
habitat
selectio
n
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ETHOLOGYAnimal behavior
TACTIC RESPONSES
+ or -
determin
e
habitat
selectio
n
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TAXIS = deliberate+ or -
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KINESIS
- random
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KINESIS
- random
TAXIS - deliberate+ or -
Which one?
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Observing your pillbug’s behavior• How do the pillbugs seem to sense their environment?
• Are they all the same species?• Can you tell differences in males and females?
• How many eyes do they have?• How many legs?• Do they exhibit any dominance behaviors?• How do they respire?• How do they grow?• What are some stimuli they seem to respond to?
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Drawing your pillbug
1. Determine the relative proportions:a. width : length;b. height : length;c. distance between eyes : width of body;d. length of antennae : length of body.
2. Count the number of body segments.3. Count the number of legs.4. Locate the eyes.5. Label the body parts.6. Note the size of the pillbug.
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Observing your 10
Put 5 on each sidePut 5 on each side• Every minute (or .5 min), count and record how many on each side.
• YOU CAN STILL BE DRAWING DURING THIS SECTION.
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Designing a controlled experiment
HYPOTHESIS/PREDCTIONHYPOTHESIS/PREDCTION• Poor: I think pillbugs will move
toward the wet side of a choice chamber.
• Better: If pillbugs prefer a moist environment, then when they are randomly placed on both sides of a wet/dry choice chamber and allowed to move about freely for 10 minutes, most will be found on the wet side.
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Designing a controlled experiment
ExperimentExperiment• In a controlled experiment, you must explicitly keep all variables constant except the one you are manipulating.
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Designing a controlled experiment
ExperimentExperiment• YOU HAVE your independent
variable given… you must design and execute a controlled experiment.
• You may need supplies, get them from Mrs.. Hobby