breeding ages

[Michael & Sharon Fazi]

What are the breeding age time periods of male and female gerbils?  At what age does a male reach puberty?  Can a male gerbil impregnate a female up until he dies?  Is he intersested up until he dies?  Does his age affect the quality of his sperm and his offspring? At what age does a female reach puberty?  At what age does she have menopause?  What is the average number of litters a female will have in her lifetime?