hey this is my second clutch of eggs well really my first. ANyways i was talkin to another breeder and he was saying that he keeps his temps around 87 in the incubator to produce males and lower for females. I keep mine around 82-83 which he said i can raise them but im afraid to. also he said to take a flash light and hold it up to the egg to see the embryo but all i see is red vains throughout the eggs is this normal within the first two weeks of incubation?
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eggs
dragonking24
Oct 22, 2006 09:17 PM
Replies (4)
dragonking24
Oct 23, 2006 02:20 PM
can somebody pleases reply
PHLdyPayne
Oct 23, 2006 02:31 PM
Holding a flashlight to the egg is called 'candling'. The red veins you see is normal, indicating a fertile egg. Typically as the embroyal develops, it is harder to see anything when the eggs are candled.
To my knowledge, dragons are not temperature sex determinable, so there is no guarentee on the sex depending on the incubation temperature.
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PHLdyPayne
kinyonga
Oct 24, 2006 09:22 AM
On one forum I read that higher temps should produce all females. The person said that they incubate eggs at 86 degrees and get 99% females.
Here is a site that also talks about TSD and pogona vitticeps...
http://72.14.203.104/search?q=cache:mK48LC581hIJ:www.griffith.edu.au/school/asc/ppages/academic/jmhero/ash/pdf/confabs05.pdf "pogona vitticeps" AND TSD&hl=en&gl=ca&ct=clnk&cd=35
"There is now preliminary evidence that thermosensitivity to incubation temperature may coincide with a genetically-determined mode of sex determination in two Australian lizard species (Pogona vitticeps, Bassiana duperreyi). This research aims to test whether skewed sex ratios at ‘extreme’ incubation temperatures in these two species involve true cases of temperature-induced sex-reversal".
That's all that I have found about it...no personal experience since I don't breed them.
JRhine
Oct 24, 2006 06:10 PM
I just hatched out two clutches of eggs that I incubated at the same temps, 82-84, and I did produce surprisingly more females than males. I incubated at a higher temp last year and produced mostly males. Whether or not this is due to temps or just a coincidence, I'm not sure. Just thought I'd share!!
Jessica
www.yellowroomreptiles.com
