Because if we work on it, it’s got to do with sperm, here is a copy of the topic from the Sperm Biology site:
Lipids in the Sperm Membrane
Sperm naturally are rich in polyunsaturated fatty acids (PUFA). This is odd because PUFA are very susceptible to oxidation and lipoxidation is not quite what sperm need to function. We have recently found that Drosophila when fed plant-based sterols and PUFA produce sperm that emit fewer reactive oxygen species than males fed a yeast-based diet. That’s all so far, we have no idea whether these sterols end up in mitochondria or whether the presence of PUFA in the cell membrane is enough to produce oxygen radicals.
Related to our project on speciation between bat- and human-associated bedbugs, is the question how the lipids in the blood of bats and the blood of humans end up in the sperm cells. We know that something is going on and we also know it has a relationship to sperm metabolism. Watch this space…
Guo R, Reinhardt K. 2020. Dietary polyunsaturated fatty acids affect volume and metabolism of Drosophila melanogaster sperm. Journal of evolutionary biology 33: 544-550. pdf.