Bluegill question

[Ifish]

O.k. in my pond in my backyard there was bluegill. Hundreds of bluegill were in the pond in August, September, October, but all of a sudden there all gone. I cannot see one bluegill around the whole pond they just disappeared. I have thrown so much bread and other food out there in hopes of attracting them, but nothings is even biting the food at all, except little minnows. The pond is in south Florida near the everglades and it has gotten a lot cooler latley if that means anything. I didnt look at the pond really at all in Novemeber so I didnt notice the disapearence of the blue gill till now so i dont know what happend in this one month time, but this really stinks because I use to use them as bait. Where are my bluegill? P.S. This is the same pond i asked the question about before, the one with no bass in it.