My unique Poecilotheria

Cooper

Cooper

Arachnoangel
Old Timer
Joined
Jun 22, 2003
Messages
962
!

Craaazy, looks like the band running down it just split into two :eek:

Cool! :cool:
 
CedrikG

CedrikG

Arachnoking
Old Timer
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Nov 26, 2004
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3,041
woaw, first time I see that, very interesting, awesome marking

just curious, what is that white thing ? Cotton ?
 
Michael Jacobi

Michael Jacobi

ARACHNOCULTURE MAGAZINE
Old Timer
Joined
Mar 17, 2003
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939
Fascinating spider! It seems more likely that it is the result of a developmental fluke rather than a genetic trait, but who knows... I certainly have never seen anything like it!

Cheers, Michael
 
D

Dr Pies

Arachnoknight
Old Timer
Joined
Mar 7, 2005
Messages
250
Is this the entire spider's abdomen?
Strange..
 
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aaronrefalo

aaronrefalo

Arachnolord
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Apr 5, 2005
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615
No....the abdomen is were i marked....hey i would like to have one like urs..hehe even like urs El Johano interesting becouse u will be certainly unique among all these hobbiests....then post some of the pictures of the progeny...we would all like that..

Aaron
 

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Elson

Elson

Arachnoknight
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Joined
Aug 18, 2004
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225
That's the weirdest T i ever seen . COOL!!!
I don't think that's the entire abdomen , can see the spinerets there.. :D
 
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Samael

Samael

Arachnopeon
Joined
Jan 3, 2005
Messages
4
Kirdec said:
woaw, first time I see that, very interesting, awesome marking

just curious, what is that white thing ? Cotton ?
Click to expand...
Kirdec it isn't cotton :]In my country we calls this styropian :D,which means " foamed polystyrene" - i found it in box in which I had bought my Poe. :)


El Johano said:
Your regalis has a conjoined abdomen, sort of like siamese twins but where the division is not that extreme. It is not genetic.
I have a P. irminia with the same condition;
http://www.arachnoboards.com/ab/showthread.php?t=42636&highlight=conjoined
Click to expand...
Wow very nice spider - P.irmininia is my favourite species :) .I'm curious, how this kind of ornament could appear if not genetically. Is it connected with biochemistry or something ? Are you sure, I won't receive progeny with such ornament after breeding ??

Dr Pies said:
Is this the entire spider's abdomen?
Strange..
Click to expand...
Dr Pies - Yes it is hybride of spider with substrate. I've put a lot of effort to make my spider copulate with substrate . :D ;)

Nick_schembri said:
Does it have normal spinnerets? and do they function well?
Click to expand...
Yes, he has normal spinnerets and he makes normal webs. :)
 
hike34

hike34

Arachnopeon
Joined
Feb 5, 2005
Messages
49
Samael said:
how this kind of ornament could appear if not genetically. Is it connected with biochemistry or something ? Are you sure, I won't receive progeny with such ornament after breeding ??
Click to expand...
A conjoined abdomen has to do with a defect in the embrionic development stage - That is to say the the pattern on the spiders abdomens isn't a genetic trait. Therefor, it won't pass on to the next generation through genetic means.

However, the reasons for such a defect in development are not totaly known. They (the reasons for the problums in embrionic development) might be genticly based, Or, they might not be...
If they are, then there is a very small chance that the gamet's of your spider will also go through the same proccess while devloping. This isn't to say that they will come out like dad - he was lucky to live through his development - most siamese twins don't surive to be born, and if they do, they die shortly after.
 
A

angelarachnid

Arachnobaron
Old Timer
Joined
Jun 25, 2004
Messages
391
This regalis is probably the best one i have seen showing conjoined markings on the abdomen looks like both pholiums are 100%, the best i have found so far is 100% in one and 90% in the other.

Last year i had an eggsac with 11 conjoined specimens. 4 Carapagus, (joined at the carapace) ie 16 legged spiders, 6 abdopagus (showing variations of joining in the abdome pattern) and 1 carabdopagus conjoined on both the abdomen and carapace.

If you want to see the pictures of these they will be in a future journal of the BTS so you need to be a member.

http://www.thebts.co.uk/framset.htm you can join here

A follow up article will include pictures of other specimesn of various species showing conjoined markings and some with no abdominal markings but showing evedance of conjoining, also a 2 tailed scorpion.

Hike is partially correct when he says "A conjoined abdomen has to do with a defect in the embrionic development stage - That is to say the the pattern on the spiders abdomens isn't a genetic trait. Therefor, it won't pass on to the next generation through genetic means."

I have tried breeding experiments with the first specimen i had with conjoined marking on the abdomen but these were crossed with a female which had no conjoining of the abdomen. the results are waiting to be published in a BTS journal (another reason for joining).

of the 6 specimens i have left i have one sexed female and so far 3 confirmed males, i plan to mate a conjoined male to the conjoined female, and mate the conjoined male back to his mother to see what happens, and as you guessed the results (if any) will be in a (distant) future BTS journal.

I would like to contact the guy with the P. irminia specimen, can you email me please (not PM as i rarely get the time to visit this site)

Ray
 
Martin H.

Martin H.

Arachnoangel
Old Timer
Joined
Sep 1, 2002
Messages
864
Hi,

not a scientific article, but the first time I have red anything from unusal markings in a Poecilotheria:
  • BEHRENS, M. (1998): Seltsame Abdominalzeichnung bei Poecilotheria ornata. Tarantulas of the World 24: 15.
all the best,
Martin
 
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