Temperature changes affect all physiological processes, such as modification of membrane fluidity and local transitions of the lipid bilayer, which can affect membrane integrity and permeability, as well as the mobility and function of membrane receptors.
This research studies the effect of temperature variations and Cd/Ca interaction, on the growth of Paramecium sp. The concentrations of Cadmium Chloride were used (0.5, 1, and 10 µM) in addition to two concentrations of Calcium Chloride (20 µM and 2 mM). Paramecia were acclimated at 28° (the optimal temperature) and at 16° (low temperature).
The results show that temperature variations affect the growth of paramecia by slowing down their multiplication and affecting the absorption and bioaccumulation of the toxic metals present.
At the same time, the presence of calcium in high concentrations strongly reduces the observed effects of cadmium.