Chameleon Company
Avid Member
You said...."Each egg within a clutch, and each clutch, will be affected by the health, and more specifically, the vitamin and mineral stores of the female"...can't disagree with that!
You said..."A female in tip-top shape will invariably produce a clutch with both a high-fertility rate, and then consequent, high hatch rate. When the female is less-prepared, both the fertility rate, and then the hatch rate of those fertile eggs, will drop. Possibly to zero."...so are you saying that any clutch that has infertile eggs in it is due to the female lacking nutrients rather than the egg being too far down the reproductive tract to have been fertilized?
That is correct. I do not believe that there is any significant correlation in distance within the track and fertilization for eggs laid. For instance, females fresh from the wild in the right time of year will have an exceedingly high fertility and hatch rate. There is no evidence of any significant factor involved except that they are fresh caught and pretty healthy. Most hobbyists do not come close to achieving those results. We can vary vitamins and nutrition here and see a very direct correlation with fertility and hatch. Unfortunately, a female chameleon can be raised with a seemingly healthy appearance, be bred, and then crash, or produce clutches not worth a hoot. This is primarily due to a lack of the proper vitamins and minerals. This is not to say that other factors can affect fertility and hatch rates, but the animals are wired for success if given the right vitamins, minerals, nutrition, and husbandry.
You said..."Of course, it is more common that a female with less-than-desired husbandry will produce a marginally successful first clutch, and then crash worse on the second, as the husbandry has remained the same, and the first clutch depleted her too much to produce an equal, much less better, second clutch"....but this doesn't account for the first clutch having some fertile and some infertile eggs followed by a clutch of all fertile eggs like the scenario I was asking about. This has been reported many times without there being any improvement to the husbandry being involved as you were suggesting. You're saying that the second clutch would be worse.
What I am saying is is that the fertility and success results that you see are far more influenced by the health of the female, especially its vitamin and mineral stores (let's assume that "nutrition" means everything, vitamins, minerals, nutrition, water, proper UVB, etc) than any other factor. That proper nutrition will produce high yield results for intial, then a second sperm-retained clutch, and even third clutches. When the animal is coming up short on nutrition, you will get progressive failure at a rate correlating directly to the extent of the shortcomings.
Add-in: As for reports that a first clutch can be marginal, but then the next much improved, but with no apparent change in husbandry, I cannot relate to that. It is not our experience here that such happens that way. What I use as a starting point here is that a female, on her first clutch, with the proper nutrition, will have a high fertility / high hatch clutch. The gold-standard here would be animals as close to wild and healthy as possible. They do not start off marginal. They are good from the get-go. If my experience is that females with the proper nutrition start well, and then stay well, then I am essentially unable to replicate the results you note, unless I manipulate nutrition.
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