Background Information http://insected.arizona.edu/isoinfo.htm * Definition: any of various small terrestrial or aquatic crustaceans with seven pairs of legs adapted for crawling. * Iso- Greek for “similar to”, Pod- Greek for “foot”. * Organization:
Phylum, Arthropoda; Class, Malacostraca; Order, Isopoda
3 main body parts: head, thorax, and abdomen
One prominent pair of antennae
Seven pairs of legs (14)
Paired appendages at end of abdomen called uropods
Color varies grey to white
* Male and Female:
Females have pouches at bottom of legs for eggs
Males have first two appendages
Look like adults, except smaller in size.
Omnivores or scavengers feeding on dead or decaying plants or animals. Some may eat live plants. * Habitat:
Breath with gills, need a moist environment, under rocks for example. * Predators:
Vertebrates and invertebrates.
* Interesting behaviors:
Pill bugs: curl up into a ball for when feel attacked or insecure. * Impact on the ecosystem:
Positive: food for other animals
Negative: can eat and damage plants
* Where to find:
Under logs, moist leaf liter, in pet food dishes, flower pots (have water), and under stones and bricks. Live in moist and shaded areas.
* Observe various aspects of a terrestrial isopod
* Conduct experiments examining the responses of isopods to various environmental factors * Design and conduct an investigation of animal behavior: will the Isopods prefer a normal wet environment or a wet environment with diluted vinegar? Hypothesis:
The group hypothesis was that the isopods will prefer the normal wt environment, than the diluted vinegar environment? Materials:
* Total of 10 sow bugs. (make sure that they are all sow bugs, and not mixed with pill bugs) * Two containers attached. (same size and shape)
* A ruler to separate sow bugs from entering...