It is suggested that the brine shrimp’s preference for green light is due to their food sources being predominantly green in colour. However brine shrimp are non-selective filter feeders who have no preference in what food they consume as they only consume what food is available to them at the time. This raises the question as to why the brine shrimp have an apparent preferred wavelength of light in this set of results. It could be assumed that the brine shrimp were raised in an environment where an area with a similar light colour to the green light used in the experiment contained more mates, was a safer environment and had a greater resource of food. As the brine shrimp move towards the light they would be more visible to predators in their …show more content…
This is due to the small size of the Artemia nauplii, and it would have been easier to observe their movement in smaller petri dishes.
The coloured filters used to create different wavelengths of light may have caused the light intensity from the torch to have decreased, so the intensity of light may have varied for each wavelength of light. As different torches were used in the two different lab sessions, the light intensity from each torch is likely to have been different. Both of these factors may have reduced the accuracy of this experiments results.
Using a more powerful bench magnifier or a microscope would have made observing the brine shrimp easier. It would have also been possible to have more than one brine shrimp per dish if using a microscope, so that the response of a group of brine shrimp to different wavelengths of light could be observed rather than the response of a single brine shrimp. However the light source under the brine shrimps from the microscopes was likely to increase in temperature, creating an uncontrolled variable which may have reduced brine shrimp motility or killed