Tested Studies in Laboratory Teaching, 2007, Volume 28
Maggie Haag, Louise McBain, & Bill Glider
Abstract
Artemia franciscana (brine shrimp) inhabit saline lakes and temporary ponds. Nauplii larvae hatch from resting eggs in the spring. The response of a mobile animal, such as Artemia, to variation in a single environmental factor is often investigated through the use of a habitat preference experiment. In this experiment, Artemia will be exposed to wide range of habitats or intensities of a single factor (e.g. temperature, light, pH), given sufficient time to select a given habitat, and then sampled to determine the preferred condition. The experiment will attempt to answer if Artemia is indifferent to the factor under study or does it actively select a specific condition and what is the preferred condition. This exercise is used to re-enforce hypothesis testing and the use of chi square goodness of fit statistical test.
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