Lipid Modification to Compensate for Membrane Fluidity

In the context of membrane biology, lipid bilayers play a crucial role in maintaining the integrity and functionality of cellular membranes. These bilayers are primarily composed of phospholipids, which have hydrophilic heads and hydrophobic tails. However, the fluidity and integrity of these membranes can be influenced by the type of lipids present as well as temperature and cholesterol levels.

Consider a scenario where the membrane fluidity of a cell decreases significantly due to environmental changes. This alteration in fluidity is hypothesized to affect membrane protein function and signal transduction mechanisms. Which type of lipid modification would most likely compensate for this decrease in fluidity?