Female geckos can start ovulating as early, possibly, as 5 months, though they should not be bred at that age. Usually, they ovulate for a period of a few months. Many ovulate roughly between Feb. and July, but there are geckos that naturally ovulate at other times. I think it's possible that the presence of a male could stimulate ovulation in a female. Last season I bred 6 females to 3 males, introducing them in Jan. Most of the females ovulated and became gravid by Feb. or so, but one, who was also late last year, didn't start ovulating till sometime after March (not sure exactly when). To see pictures of ovulation in leos, do a search on the forum for "ovulation" or else maybe someone will be good enough to post the picture on this thread.
Aliza