Auto flower males life span

[cbotany]

Hey, so I have like 6 auto males and i usually just do open pollination, this is my first time kinda selecting males as well as saving pollen, so a few questions, do they have a similar lifespan to females? (a kinda death switch at a certain point?) as well at what point do you save unopened male flowers to save pollen? Thanks guys, PBLH