1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.


Discussion in 'Tarantula Questions & Discussions' started by Grael, May 14, 2003.

  1. Grael

    Grael Arachnolord Old Timer

    ok i got two curly hair spiderlings, so i havnt got a clue what sex they are but i was wondering....

    if one turns out male and one turns out female, and they are both from the same burd can you interbreed them?

    in other words can you interbreed spiders?, i know most animals its a big no no but is it the same with spiders?
  2. Weapon-X

    Weapon-X Arachnodemon


    if you do i beleave the sac can be infertile, or the slings will be weak(hence dieing for no apparent reason), bad molts, etc...it really would'nt be hard to just find another curly hair from a different bloodline--Jeff
  3. D-Man

    D-Man Arachnochicano

    Don't do it if they're from the same sac. You'll just start a line of bad T's.
  4. Grael

    Grael Arachnolord Old Timer

    ok thanks people :D

    i was just wondering about it thats all lol
  5. jwb121377

    jwb121377 Arachnoangel Arachnosupporter

    Well even it was ok, it wouldn't work out, because males mature much faster then the females do.
  6. skadiwolf

    skadiwolf Arachnolord Old Timer

    there's been speculation that the males maturing so much faster was nature's way of assuring that no inbreeding would take place and weaken the genetic line.

    makes sense.
  7. MrDeranged

    MrDeranged He Who Rules Staff Member

    Don't be too sure on that one. If I remember correctly, there are a few species in the US trade that originally came from a very very limited breeding pool. When dealing with very rare species where there is very little hope of getting another bloodline in, males are slowed down by feeding less and keeping them cooler while the females are sped up by warmer temps and powerfeeding. I don't say that this is the right thing to do or that it should be done, only that it has.

    I'm pretty sure if P. metallica do come over this will probably be the case with them.....

  8. Wade

    Wade Arachnoking Old Timer

    I think it's also supposed to be the case with all the A. geniculata in the US hobby now, along with quite a few others.

    I'm not sure if inbreeding is the big no-no it's made out to be. While some experiments done indicate that the resulting slings are small and weak, I suspect that this has more to do with breeding females at a small size rather than letting them molt annother 1-2 times. To really give the females tike to gain some size, it's probably best to sex the slings as soon as posible in order to most effectively speed up the females while slowing down the males.

    Not that I advocate it as a standard practice. In the case with the curlies, there's no reason to go to these lengths when there's abundant unrelated spiders of the same species available. When it comes to establishing rare or scarce species in the hobby however, it may be the only way.

  9. Greal..

    Wow.. I didnt know that the Welsh, where like the hicks down here........:}
  10. Bry

    Bry Arachnodemon Old Timer

    Remember, the royal families up there are all about line breeding. That's just a fancy term for inbreeding. :D


  11. jwb121377

    jwb121377 Arachnoangel Arachnosupporter

    I knew it could be done, but to have two spiderlings and raise them in the same conditions it wouldn't work out. I was assuming that he wouldn't elevate the female temps and lower the males. Not to get to far off topic, but I wonder if they will be able to establish P. metallica and P miranda by inbreeding alone?
  12. SoCalKyle

    SoCalKyle Arachnopeon

    Beware of the T's that come from the Deep South (arkansas, alabama,Mississippi) we all know how things go down there. Pretty soon there will be a Mexican Redneck Tarantula;P
  13. Grael

    Grael Arachnolord Old Timer

    wait wait i dont wanna interbreed them lol

    i was just using them as an EXAMPLE cause i wanted to know info on it :)

    thanks for replies by the way!
  14. D-Man

    D-Man Arachnochicano

    Ha ha, good one, Kyle, good one! Some of 'em might squeel like a pig, too ;) !
  15. Professor T

    Professor T Arachnodemon

    If you breed close genetic relatives generation after generation, this leads to a phenomenon known as inbreeding depression. There is strength in diversity, a phenomenon known as hybrid vigor.

    That being said, there might be no problems breeding two T's from the same brood, but keep crossing their offspring without outcrossing, and you could have genetic problems.

    Unless the siblings have a trait you want to breed true, there is no good reason to inbreed.
  16. Martin H.

    Martin H. Arachnoangel Old Timer


    Do they really do? Are there any research results published about this or where does this/your opinion come from?
    In the last years I have made several times the experience, that females have matured earlier than the males which have been raised under the same conditions => mating of sister and brother has been successfull (= offsprings), so the female has been adult earlier than the male! That's why I doubt in the meanwhile statements like "Males mature one year before the females, that's the natural way to prevent inbreeding".
    IMHO females are adult much earlier than most would expect!

    all the best,

  17. minax

    minax Arachnoknight Old Timer

  18. Arachnopuppy

    Arachnopuppy Arachnodemon

    In Asia a long time ago, kings used to marry off their daughters to the king's brothers. (Marry your uncle kinda thing.) In turn, the kings usually married their brothers' daughters. This was to assure that the royal bloodline was killed. No wonder why most royal families in Asia are dead.
  19. Grael

    Grael Arachnolord Old Timer

    ok instead of me making another thread a question.....

    on average how old does a tarantula need to be before they are mature?im guessing it goes on sex aswell, does it differ between species too?
  20. jwb121377

    jwb121377 Arachnoangel Arachnosupporter

    Really? So in theory females mature at a smaller leg span size then males? I've never tried to breed a smaller female with a bigger male, as I always assumed that a female was not full grown until it reached it's adult size.