Prostatic secretions of semen include citrate as one of the component.
The role of citrate in motility has been suggested by some researches. (Kavanagh JP. Isocitric and citric acid in human prostatic and seminal fluid: Implications for prostatic metabolism and secretion. Prostate. 1994;24:139–42).
Is there a possibility, that it can be utilized as an energy source, and enter the citric acid cycle of mitochondria of spermatozoa?