I mentioned this subject not too long ago on another forum. Most everyone told me I full of it.



Last year I bred only cobras. Black & White Spitters and Sumatran Spitters. I kept my snake rooms at 85-86 degrees. I cooled my snakes, and warmed them back up to 85-86 degrees. The snakes bred at 85-86 degrees and I incubated the eggs on a shelf that stayed 85-86 degrees. I got ratios of 12.3 and 5.1.



I started keeping my snake rooms at 80-83 degrees right after those eggs hatched. So for a year, my snakes were now being kept at 80-83 degrees. I cooled my snakes, and warmed them back up to 80-83 degrees. The snakes bred at 80-83 degrees and I incubated the eggs on a shelf that stayed 80-83 degrees. This year I got ratios of 7.13 and 2.2 respectivly.



I don't think splitting up a clutch is the way to test. Whose to say sex wasn't determined by the temps when they actually bred or when the eggs were forming in the female? Why not incubate the whole clutch at one temp one year, and make the same exact breeding the next year and incubate at a different temp.



I bred the exact same pairs of snakes. At cooler temps I got more females than I did at higher temps. Splitting up the eggs does not make any sense, as they cold have already been temp sex determined before they were layed, thus you have proven nothing.



RC

[ Show Entire Thread ]