Well this last season, my first to breed corns, I had 3 '02 corns, and one '01 or '00 corn. Crossed the male ('02 stripe normal) to all three females. Actually he was living with two of the females, then I decided that one of the two females was too small to breed, and pulled both females out not being sure that he had even gotten interested in them. I put in the third female and within moments they were locked up.
Results of those three breedings:
The smallest female was an Anery Stripe. It became obvious she was gravid, and she laid 12 eggs.... 6 were slugs.... she didn't seem to have any problem passing the eggs. 5 eggs went full term, one died midterm. Of those five 2 hatched out, the others wobbled quite dramatically for about 24 hours and then didn't move... I slit them and found 3 dead-in-egg hatchlings, all normal stripes with jaw deformities/kinks/bulging foreheads. The two that hatched on their own looked perfect on first inspection, but within a couple of days it became obvious that they had some kinks.... one ate one didn't. The one who ate was pictured earlier in this thread.
The second smallest female was a normal het motley I got from Kathy Love who was selling them for a friend. She laid 10 large eggs (twice the size of the anery's eggs) Her container of vermiculite was a bit too moist and I spent most of the incubation time trying to cut back on the moistness. Changed vermiculite twice, both times completely dry, still got a bit too moist. Had some mold problems. Two of those eggs hatched on their own, the rest I slit. All, including the two who hatched on their own, had some level of deformities... bulging forehead, deformed or missing jaw, mild to severe kinking. One was dead-in-egg and looked perfect except for the umbilical wrapped around him which appears to be the cause of death. (tied in a knot around its middle). The two who hatched on their own were "keepers" and the rest were euthanized. The keepers never ate, were offered live, f/t, fresh killed, brained, deli-cupped, I offered live and f/t fence lizard, nad live and f/t hatchling house gecko. NOTHING tempted them. Only thing good about that clutch is that I learned that my male and my female were het amel, because one of the two keepers was amel.
This girl laid a second clutch, 5 eggs... one was a slug, and one never had veins. Only one of those hatched, and she was severely deformed. The other two were dead in the egg. Deformed. The one who was alive was euthanized. The only contribution she gave me was the knowledge that both of the parent snakes were also het anery, because she was a snow.
The third female was a reverse okeetee. She laid 21 eggs 39 days after hooking up with the male for the first time. They seemed fine. One of them ruptured a couple weeks into incubation. This was the driest of the incubation boxes. I couldn't see why the egg burst. The remaining 20 were fine up until day 58 of incubation. On day 58 two more eggs started to leak. I opened one, and could tell that the baby, who was alive, was a little too premature to make it. He was euthanized (he had a big bulgey forehead). The other egg ... I put a bandaide on... and it went full term and hatched on its own. Of the 19 remaining eggs, about 4 or 5 of them opened up their own eggs... the rest i opened up. Some were dead-in-egg, most were alive but too deformed to open their own shells. All of them had some level of kinking, and/or deformed/missing jaws, and/or bulging foreheads. The four that I kept out of the five that slit their own shell were two amels, and two normals, with very minimal kinking/problems. I would have kept five, but the one with the bandaided shell only made it half way out of the shell before dying. Of the four keepers, the one normal and the one reverse okeetee made it the others never ate.
Some say it could have been genetic... but that is highly unlikely as I got near 100% defective corns. With perfect parent corns, and with all three females from three sources (one from the same source as the male, but unrelated, one from Kathy Love, and one from Rich Z.) it seemed impossible for them all to carry the same recessive gene. SO... it was probably environmental... could have been the AC failure and 88* temperature they were exposed to for 12 hours. Could have been the tap water I was using to water the mice, the snakes, and moisten the vermiculite. could have been the ant-spray hubby sprayed around the outside of the mouse house (outside shed for hte mice). Could have been bad vermiculite, or too moist vermiculite, etc. The kingsnake eggs incubated at the same time and in the same manner all hatched fine.
SO.... After all my tales of woe, I have three nice babies that I will keep or sell as pets at a reduced price to my students (not to make a profit, but to instill a sense of worth in the animals for the students so they won't treat them as disposable). Next year I will use (and am using) mice that have only had bottled water to drink, snakes that have only had bottled water to drink, and I will try to (cross fingers) have no AC failure so the temps will be more constant. I might try a no-substrate method of incubating the eggs, thus cutting down on the moisture the eggs are in touch with. We'll see what luck I have next year... plus I will use a different male for the normal het motley, possibly for the stripe. The reverse okeetee died after laying her eggs
. I have an anery het motley I might try with the male from last year, and I also have a proven pair of cornsnakes that have together produced beautiful babies. With these modifications I will know if cornsnake breeding is for me or not. If it doesn't work out, I'll be selling a beautiful 2.3 of cornsnakes. But hopefully it works!
In any case, my little keepers, in spite of their flaws, are showing themselves up as very beautiful babies. I look forward to watching them grow.
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~Sasheena