bio lab pill bug

Topics: Woodlouse, Crustacean, Armadillidiidae Pages: 4 (749 words) Published: December 3, 2013

What are the Effect of Different Environments and the Movement of Pill Bugs?

Purpose: The purpose of this lab was to analyze pill bug’s activity in different environments and determine the effect of wet/dry or dark/light environments have on them and how taxis takes place in their choices in living in areas.

Background information: Terrestrial isopods are commonly referred to as sow bugs and pill bugs and have other nick names as well. These pill bugs are also related to lobsters, crabs and shrimp making them breathe with gills. Pill bugs also tend to live in moist cool areas such as underneath rocks and soil in order to keep them from dehydrating. These pill bugs seem to sense their environment with the antennae in front of their body. Males and females are typically distinguished through darker and lighter colors, darker bottom sides being males and lighter being females. They also breathe through their gill like structures within their bodies. Through the first lab experiment that I did, I allowed the pill bugs to move freely without interfering with any of their decisions. After recording the numbers after every thirty seconds I believe that through taxis they chose to move the side where the moist was much higher. Based on my data I have concluded that pill bugs prefer moist living condition than dry. Hypothesis: If pill bugs naturally live under rocks and typically come out during the night, I predict that most of the will prefer the darker setting more than the lighter

Materials:
Dirt/Soil
Roly-polies
An apple
Mister
Shoe box
Foam cup
Duct tape

Procedure:

Results:
Isopod tracking chart in wet and dry conditions
Time (min:sec)# Wet# Dry
0:0055
0:3082
1:0091
1:3073
2:00100
2:3082
3:0091
3:3091
4:0073
4:3082
5:0064
5:3091
6:0082
6:3073
7:0082
7:3091
8:0082
8;3091
9:0082
9:3082
10:0091

Isopod...
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