Introduction: To achieve experiments that determined the role that the environmental factors play in the habitat selection, we used terrestrial isopods (Crustacea), Armadillidium vulgare. These tiny creatures are commonly referred to as pillbugs, rolie-polies, or sowbugs. Pillbugs use gills to respire, therefore, their affinity to humid surroundings. These isopods can be located in leaf litter or under logs, where they are able to consume detritus. Some interesting characteristics about the pillbug anatomy are seven pair …showed first 75 words of 1072 total…

…showed last 75 words of 1072 total…animal. We now understand the proximate "nature of the stimulus that evokes a particular behavior" (Jordan et al, 2003). The movement towards or away from the stimulus is called taxis. The taxes (plural) can be either positive or negative and as a result, there is no null hypothesis acceptable for this experiment because when given the choice of moist or dry habitats or light and dry habitats, isopods have a preference over one of these habitats.