In Reply to: Take a note... posted by tvandeventer on March 14, 2003 at 11:12:02:
:I've collected some gravid females (only a few) over the years... A bullsnake, a couple black rats, a black king or 2...as I remember, all the eggs were always fertile. Same goes with a few gravid turtles I've collected and hatched the eggs out.
I think it's fair to say it's impossible to create EXACT environmental conditions in captivity...unless you keep them out side within the range of the animals!
So...I would bet that the closer you get to the natural climate conditions with seasonal fluctuations in light, heat, humdity, etc the better your chances with fertility.
Of course diet variation and other factors may also come into play.