receptive again

bradley

New Member
My female is receptive agsin after 2 months from laying eggs. I am not going to breeed her but will she still lay an infertile clutch if so some might be fetile because of such a close mating. Is this unusual or not:confused:
 
they can retain sperm.

It that really true? Retaining sperm has been shown to be quite difficult, is there any good recent studies on this subject? It would be interesting to know the biological process of this, I honestly dont know what the latest news on this subject is.
 
Yes, we hear things, so have I and I have also seen the end result with my own eyes. There sure is a number of fertile eggs in the next few batches, but in my experience they are not of the same "quality". Its impossible to know if that is due to maternal effects from the first batch or something else.

Im interested in the biological process. How would sperm be retained?
 
Bradley, I would wait unil she lays and see what they look like - fertile eggs are white and slightly bigger (you've already had one clutch anyway so you'll knw what fertile eggs look like. Infertiles are smaller and have more of a yellow tinge to them. I would incubate them anyway and see how they go. They will go mouldy if they are infertile. Here's a pic of Lily's infertiles (all 102 of them!) - they look like tiny potatoes!:D

102Eggs120409ppred.jpg
 
I had a female quite a few years ago who pushed out huge numbers of eggs too. I knew better than to over feed her and actually had her on a strict diet, yet the first infertile batch was 83 eggs, the next (fertile) batch was 103eggs and then it went down after that.

I hope I never get a female like that again, it must have been horribly stressful on her body.
 
They can most certainly retain sperm. Our female pardalis laid her first clutch of 27 eggs on 7/14 and another of 30 eggs (without seeing the male again) on 9/5. She too was on a diet after her first clutch.

Luis
 
They can most certainly retain sperm. Our female pardalis laid her first clutch of 27 eggs on 7/14 and another of 30 eggs (without seeing the male again) on 9/5. She too was on a diet after her first clutch.

Luis

But that is not a scientific way of looking at it. With the same logic, I can claim that my coffee maker is what makes the sun rise every morning. The sun rise just after I switch it on, so it must most certainly be so?

Im not questioning the fact that they do not need to mate every time to lay fertile eggs, just how its done.
 
I'm sorry but I don't understand your analogy.

Just to clarify...you're not questioning the fact they do retain sperm rather how they retain it or how they use that retained sperm?

Luis
 
The analogy is that just because you witness an occurrence and an effect, the one does not have to be the reason for the other. Saying that they "can most certainly retain sperm" just because there are fertile eggs is not a correct way to explain it.

And yes, Im questioneing the way the eggs get fertilized. Having the sperm kept "alive" for many months, even longer, in the female is quite difficult. I would like to know if this is prooven and/or if there is another explanation.
 
Holy smoke, I have not seen an article written on type writer in a long time.
This is a very old article and i dont know if it has been published anywere.

The reason I used words like "recent studies" is just because of the different ideas that have gone back and forward. For a while it was common to refer to fertile eggs like this as parthenogenesis, then it was "sperm storage", and then it turned out parthenogenesis was more common than believed.

I dont think this is a case of parthenogenesis, far from it. Im just interested in how this sperm storage would take place or if there is some other mechanism that makes this possible.

I will read the thesis, but I will see if I can get some friends to find more articles (im not in contact with the university network any more).

Thanks.
 
how do you know?

My female is receptive agsin after 2 months from laying eggs. I am not going to breeed her but will she still lay an infertile clutch if so some might be fetile because of such a close mating. Is this unusual or not:confused:

How do you know she is fertile again?... my female lay a clutch 2 months ago and when she see a male she turns black like if she is gravid...
 
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