Lab-report-pillbug

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LeTourneau University *

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1073

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Biology

Date

Apr 3, 2024

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docx

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4

Uploaded by MasterMoon9222

Zol-Od 1 Pill Bug Lab Report Tsenguun Zol-Od BIOL1011 Lab Report 1 February 7th, 2024 Introduction Crustaceans, or Armadillidium vulgare, are land-dwelling. They possess a strong exoskeleton that tends to roll up under stress. Thus, pillbugs are sometimes referred to as "roly-poly" bugs. Since they have gills for breathing, they are frequently found in wet, humid settings. Groups in our class studied pillbugs under a microscope, monitored their speed, and assessed how appealing or repulsive different substances were to them to gain an understanding of their anatomy and how they react to different substances. We predicted that the pillbugs would be repulsed by two different insect sprays and alcohol but neutral toward water. Materials and Methods In this lab, we are experimenting on pillbugs that are contained in a petri dish. The pillbugs all looked similar to each other, but our group was able to distinguish them from each other. We named the pillbugs Tiny, Spot, Plankton, Charlie, and Dennis. We also used a ruler and a timer on our phone to measure the pillbugs’ speed. Aside from these materials, we used four substances on the bugs to see their reaction and had to use separate petri dishes with paper towels inside. The substances were water, isopropyl alcohol, Off bug spray, Cutter’s bug spray. We placed each pillbug on the paper towel that was soaked in one of the substances and recorded the bugs’responses on a scale from –4 to +4. Results During the observation, pillbug Tiny was the least active and kept rolling up into a ball. Tiny seemed stressed, and it made it difficult for us to understand its response to the substances. Compared to Tiny, it was easier for us to make observations on the rest of the pillbugs.
Zol-Od 2 Image 1. Pillbugs in a petri dish Image 2. Pillbug anatomy Image 3. Top view of a pillbug Image 4. Bottom view of a pillbug Table 1. Speed measurement on pill bugs Pillbug Distance Traveled (cm) Time (seconds) Speed (cm/sec) Tiny 15 131.63 0.11 Spot 15 60.53 0.25 Plankton 15 15.17 0.99 Charlie 15 16.19 0.93 Dennis 15 151.3 0.10
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