Ephebopus cyanognathus

[mick]

Hi Everyone,

Can anyone tell me how big a MATURE female Ephebopus cyanognathus is? I just had 2 males mature and am wondering about my females size for breeding... they are not from same eggsac but they are around the same size. Thanks for any help. ( I can't believe how loud the males drum...I can hear them from the other end of my house...amazing )
Thanks for any help,
Mick

 

[Steve]

Hi,

if you have small males it's possible that the females are also adult from the same eggsac. I had this situation with E.murinus and E.cyanognathus

Try to mate! If the don't want to mate, wait for the next moult and try again

Regards,
Steffen

 

[mick]

Hi,

if you have small males it's possible that the females are also adult from the same eggsac. I had this situation with E.murinus and E.cyanognathus

Try to mate! If the don't want to mate, wait for the next moult and try again

Regards,
Steffen

Will do ...thanks for the quick reply.
they seem to be smaller in size than E.Murinus ...correct?
Mick

 

[Steve]

hi,

well there are two different murinus sizes. I think a "large" form and a "small" form. Murinus grown larger, but they are also soon adult But my murinus female was 2 month earlier adult than the male from the same eggsac

Regards,
Steffen

 

[Windchaser]

hi,

well there are two different murinus sizes. I think a "large" form and a "small" form. Murinus grown larger, but they are also soon adult But my murinus female was 2 month earlier adult than the male from the same eggsac

Regards,
Steffen

I was under the impression that males and females from the same egg sac do not mature at the same time. Also, that the females would mature a while after the males. I have heard this was nature's attempt at limiting interbreeding.

 

[Steve]

Hi,

i keep them like every other of my spiders. Well inbreed? Don't know. But explain me why you can found some Holothele or. Poecilotheria spp. in the same "whole". Maybe the mother mate with the son. Inbreed is possible

Regards,
Steffen

 

[mick]

Thanks for all replies my friends.
Mick

 

[Lasiodora]

I have heard this was nature's attempt at limiting interbreeding.

This is just speculation. The males maturing sooner than the females can be attributed to any number of unknown reasons. Besides could the recently matured male not breed back to his mother?
Mike

 

[Windchaser]

This is just speculation. The males maturing sooner than the females can be attributed to any number of unknown reasons. Besides could the recently matured male not breed back to his mother?
Mike

In theory yes, but I suspect that in the wild they would have dispursed by then. Its not like the kids hang out at home with mom.

 

[Sheri]

I was under the impression that males and females from the same egg sac do not mature at the same time. Also, that the females would mature a while after the males. I have heard this was nature's attempt at limiting interbreeding.

There is more and more talk recently that disputes this from people breeding similar sized spiders of the same species, and more importantly, spiders of the same age.
Here is an analogy to work with:

A human 12 year old may not look adult, but she can be capable of conceiving and delivering healthy offspring.

So give it a shot, be prepared to remove the male quickly, and just don't tell her father...

 

[Lasiodora]

In theory yes, but I suspect that in the wild they would have dispursed by then. Its not like the kids hang out at home with mom.

Same would apply to sibs then, no?
Mike

 

[Windchaser]

Same would apply to sibs then, no?
Mike

Yes. However, since it will take at least a few years for the male to mature, the likelyhood of him mating with mom (at least in the wild) is pretty low. If the theory that the females mature later than males from the same egg sac are true, than it would seem that siblings would have a low chance of mating. Afterall, the males only have a short time to mate.

However, if what Sheri said is true, than perhaps the old theory is not true. I guess we need more folks who are breeding to chime in.

 

[Garrick]

Yes. However, since it will take at least a few years for the male to mature, the likelyhood of him mating with mom (at least in the wild) is pretty low.

That may depend on the species. With Poecilotheria, Stromatopelma, and Heteroscodra, there is ample evidence of several generations staying in the same spot (a single date palm crown, for example).

I do know for a fact via my own experiments that you can get viable, robust (in number as well as health) sacs from P. murinus and A. avicularia from the same brood as soon as the males mature. The females of both are equal to, or in some cases, smaller than the males in legspan.
I'm on my 4th generation of inbred P murinus (none of which are sold , by the way), and 2nd gen A. avic.

As far as slow-growing terrestrials, I don't know. I'm trying to breed a small B. vagans right now, but the male I have is old and has already been with a large female numerous times. I don't know if it will be a factor.

Garrick
eight

 

[Windchaser]

That may depend on the species. With Poecilotheria, Stromatopelma, and Heteroscodra, there is ample evidence of several generations staying in the same spot (a single date palm crown, for example).
eight

True, I wasn't considering some of the arboreals that have been known to live semi-communially. I was mainly thinking about terrestrials. You made a good point though. That is also interesting to hear about your breeding success. With multy generational inbreeding though, aren't you worried about a lack of genetic diversity?

 

[Washout]

True, I wasn't considering some of the arboreals that have been known to live semi-communially. I was mainly thinking about terrestrials. You made a good point though. That is also interesting to hear about your breeding success. With multy generational inbreeding though, aren't you worried about a lack of genetic diversity?

Not to sound rude but we have had several, really in depth, conversations about this topic before. And it comes down to: no hard scientific evidence. No one knows.

Cockroaches breed less when inbred. But they are not tarantulas. And that information is not scientific, just hearsay. But leopard geckos and snakes are frequently line bred (sons to mother or daughters to father) and they don't seem to be showing many, if any, problems. But again, lizards sure are not tarantulas. But all L. parahybana in the states came from 2 eggsacks and they are being further inbred all the time without any problems discovered.

 

[David Burns]

I have recently bred H.minax. They both were from the same sac. They went from 3/4" to 4 1/2" in 18 weeks. When he matured it really caught me by surprise. Because of the problems of identifying Haplos I thought my best bet was to try and breed them together, there-by eliminating the possibility of crossbreeding.

 

[Lopez]

From under an inch to almost 5 inches in 18 WEEKS?? What were you feeding it, anabolic steroids?

 

[David Burns]

From under an inch to almost 5 inches in 18 WEEKS?? What were you feeding it, anabolic steroids?

It is actually a bit of a problem. I wish I could understand why they grow so fast for me. My E.cyanognathus seem to be growing at a slower rate though.

 

[Lopez]

18 weeks is about four months, are you sure about that :? I think they must have been exposed to radiation

 

[David Burns]

I received them on 06/30/04 and the last molt was 0n the 12/16/04. So 22 weeks, sorry I was originally counting from the first molt in my care. 6 molts to maturity by the way. Fed them crix I raise myself on fish flakes.