Must see macro pics of the molted Siamese twins!

treeweta

Arachnobaron
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This may very well be a developmental anomaly. However, inbreeding CAN lead to developmental abnormalities as well, showing up in increased frequency the further down a generation is inbred. This has been shown to be true with D. melanogaster, X. laevis (both popular models for study) as well as with plants and birds, among others. Inbreeding may not be a factor in this case, but that line of thinking is not entirely off-base.

It should also be noted that with animals that produce a large number of offspring (i.e. Tarantulas), the possibility exists of a random oddity being produced. The probability of that happening with two genetically distinct individuals, however, drops, but the possibility is still there. Separating the eggs from a sac to ensure a high survival rate provides evidence of this being true. If these oddities were allowed to develop in the sac, they may have been eaten by the other sac-mates.

Good luck with those two, er, three Rob, and keep us updated!
thats a fair point, theres possibly more of these 'mutants' generally but a very careful, observant breeder will notice them more often.
 

JC50

Arachnobaron
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They are fascinating to say the least.Rob have you ever experienced anything like this before?
 

robc

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thats a fair point, theres possibly more of these 'mutants' generally but a very careful, observant breeder will notice them more often.
That is true, I look at every sling very closely to make sure there are no issues....we noticed this one when inspecting them.
 

ZergFront

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If these guys didn't make it, I would still preserve them in vials, but I'm really hoping these guys have a nice, prelonged life.

I wouldn't consider them so much mutants as maybe spiders with disabilities. They don't seem to suffer at all. They make customized wheelchairs for spiders? (NOT a serious question) Your T cages are gonna have to have some easy access ramps or something..
 

robc

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If these guys didn't make it, I would still preserve them in vials, but I'm really hoping these guys have a nice, prelonged life.

I wouldn't consider them so much mutants as maybe spiders with disabilities. They don't seem to suffer at all. They make customized wheelchairs for spiders? (NOT a serious question) Your T cages are gonna have to have some easy access ramps or something..
They are very mobile!!!
 

JC50

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Could you imagine them in a tube?With 16 legs,they would be unstoppable and fast,and would give a whole new meaning to the word telaport!:)
 

robc

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P.irminia Siamese twins taking a walk!

Decided to shoot a quick short video of our P.irminia Siamese twins wondering around their incubator. They are very mobile and seem to be doing just fine!

[youtube]AZSNou-NfdU[/youtube]
 

Pacmaster

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Rob, I have a thought . . .
Are either of the parents of the abnormal babies wild-caught?

If so, arent they usually caught with the use of chemicals?

I dont know if p irminias are wc or not, but that is the first thing that came to mind after your "nuclear power-plant" comment on page 1.
I'm starting to wonder if one of the parents grew up next to a nuclear power plant!!
Either way, those are some pretty cool little anomalies you got there, I hope they survive.
Molts will be a scary time.

Good luck bro.
 

Drachenjager

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There's really no answer to any of those questions...trust me, I've thought of them all since discovering this guy...I guess time will tell.
well i dont recall any siamese twins being m/f seems they are all the same sex. however these are Ts lol who knows.
BUT with only one abdomen. wouldn't it be interesting if it had spermathicae and one of them had palpal emboli? what happens if one was male and died after maturing?
 

Franklin

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just a few questions to boggle your heads:

what if they are both female, and try pairing both? male?

what if they grow up to be a MF/MM and breed themselves?
 

robc

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just a few questions to boggle your heads:

what if they are both female, and try pairing both? male?

what if they grow up to be a MF/MM and breed themselves?
That would be crazy!!
 

ZergFront

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just a few questions to boggle your heads:

what if they are both female, and try pairing both? male?[?QUOTE]

Both females, possible double-clutch(literally!)? That male you pair 'em with is going to be a busy guy! Would one want to eat him and the other want to tap back to him(hope the former is lying on top during that time..)?

Both males + one female = world's strangest sibling rivalry! Or imagine 4 insertions from just one sperm webbing, one mating! Lucky girl. {D

what if they grow up to be a MF/MM and breed themselves?
I'd be more curious to know eactly how the spiders got the flexibility to do that! :eek:

Is incest frowned upon in the spider kingdom? J/K!!
 

CodeWilster

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Wow that is amazing!!!

I wonder if they will again molt at the same time or if one will develop faster than the other and molt sooner. It would seem that if that was the case then something would have to go wrong since they are sharing the same abdomen. Nonetheless that's some really neat stuff. I say you start keeping your Ts away from whatever chemicals or highly radioactive material you have them near though ;)
 
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