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Old 05-17-05, 03:19 PM   #11
atropabelladona
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Join Date: May-2005
Location: Ann Arbor, MI
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Quote:
Originally posted by LdyDrgn
I'm sorry, but I don't buy the "super low hatch rate is an indication" bit. Mainly because there have been people all over the world trying to breed certain species (Indigos, Cribos, Tiger rats just to name a few) and have had very limited success because temps and humidity have been very wrong during incubation. Not hybrids... pure blood to pure blood... and LIMITED SUCCESS. Dead offspring in the eggs, badly deformed babies, or the eggs just die. Should we take that as a sign that they should not be bred or should we keep trying until we get it right?
I could have just as easily quote ravens, but I prefer the non run on sentences, didn't want you to think I was picking on you, michelle.

Anyway, I'm going to use an analogy here. Say person A gets cancer because they expose themselves to carcinogens, and person B gets cancer because its familial. They both get cancer, but they get it from different sources.

You can say the same thing about this hybridization. If the parent animals had been bred before and previously produced viable non hybrid offspring, and in this breeding 5/21 survive, can't you infer that there is something profoundly wrong with the development of the embryos?

Embryonic termination (slugs, miscarriage, stillbirth) is nature's way of preventing severe developmental (either from genetic defects or environmental factors) problems from progressing. That being said, pairings of the same species that throw slugs either indicate one(or both) of the parents is genetically or environmentally - such as an immature female not having enough calcium to grow as well as develop young.

A pairing from disparate species (when the individuals are previously fertile) is a clear indication that the genetic defects are too many to be overcome during development.

*EDIT* I meant "pairings of the same species ... indicates one (or both) of the parents is genetically or environmentally deficient, or in the case of most reptiles, the incubation conditions aren't within acceptable parameters.

Last edited by atropabelladona; 05-17-05 at 03:22 PM..
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