DragnDrop
05-04-05, 05:26 PM
Normally I incubate crested gecko eggs at room temperature, even in the basement, never letting the temperature get above 72 F (22 C). Years ago when I first bred cresties I did the incubator thing and it worked okay. Then I was told that they hatch bigger and hardier if incubated longer at a lower temperature and as an added bonus there seem to be more females hatching in that temperature range. So, I switched, been doing it that way ever since.
This past winter I decided to do one experiment with temperatures and cresty eggs and post the results. Since it wasn't endangering the geckos nor eggs, it was worth doing. Here's the result:
http://www.ssnakess.com/photopost/data/511/321sizematters.jpg
I'm not trying to pass this off as scientific proof of any kind, but you can get the idea of how different they hatch. The top gecko is one of the ones that hatched last week, pictures in the "What's better than finding a crested gecko hatchling?" thread.
I put this one on the same bottle cap as the new (lower gecko) for scale in the picture. The lower one hatched overnight, found him this morning.
They have different parents but they share some genes. Still the difference in genetics could have some influence on hatching size, but not "THAT" much. Also, the older one has eaten 2 meals of fruit, no bugs that I can tell, but it's not enough food to make him grow incredibly fast to make that much difference in just a few days. Even allowing for almost a week difference in age, you have to admit that there is a difference in hatching size. There is rarely, if ever, any yolk left in the cool incubated eggs, and when there is some, it's barely worth mentioning. Yet the warmer incubated eggs had a big blob of yolk left inside, suggesting that the cooler babies had more time to absorb all the goodies and use them to grow a bit more.
(The lower gecko in this picture is the clutchmate to the top pictured one in the other thread. They hatched Apr 29 and May 4.)
This past winter I decided to do one experiment with temperatures and cresty eggs and post the results. Since it wasn't endangering the geckos nor eggs, it was worth doing. Here's the result:
http://www.ssnakess.com/photopost/data/511/321sizematters.jpg
I'm not trying to pass this off as scientific proof of any kind, but you can get the idea of how different they hatch. The top gecko is one of the ones that hatched last week, pictures in the "What's better than finding a crested gecko hatchling?" thread.
I put this one on the same bottle cap as the new (lower gecko) for scale in the picture. The lower one hatched overnight, found him this morning.
They have different parents but they share some genes. Still the difference in genetics could have some influence on hatching size, but not "THAT" much. Also, the older one has eaten 2 meals of fruit, no bugs that I can tell, but it's not enough food to make him grow incredibly fast to make that much difference in just a few days. Even allowing for almost a week difference in age, you have to admit that there is a difference in hatching size. There is rarely, if ever, any yolk left in the cool incubated eggs, and when there is some, it's barely worth mentioning. Yet the warmer incubated eggs had a big blob of yolk left inside, suggesting that the cooler babies had more time to absorb all the goodies and use them to grow a bit more.
(The lower gecko in this picture is the clutchmate to the top pictured one in the other thread. They hatched Apr 29 and May 4.)