parthenogenetic reproduction

Steven · Jul 2, 2005

CBorn Scolopendra subspinipes (Vanuata)
from 08/2003 on a clutch of eggs, never been in contact with others.

Randolph XX() · Jul 2, 2005

some people told me they can do that b4, but i finally see the evidence today !!!
congrats Steven!!!!

danread · Jul 4, 2005

Thats great to be finally be able to confirm they can lay eggs without mating. it will be interesting to see if they are fertile or not though. it's possible that pedes will lay eggs regardless if they have mated or not, but the female might eat unfertile eggs? Anyway, let us know what happens.

Cheers,

Bigboy · Jul 5, 2005

Allright!

This is exciting news. Please make sure to keep us posted on this batch. If they turn out to be fertile this may be one of the most exciting things I have learned here.

Steven · Jul 8, 2005

Eggs gone !

well i guess this is only a proof scolopendrids are adult after 2 years,...
still no proof for parthenogenetic repro.

danread · Jul 8, 2005

Thats a real shame. It's going to be a difficult problem to solve. As i said before, i suspect that eggs may get eaten when they aren't fertile, possibly explaining why so many eggs get eaten in captivity. Of course, i cant be sure about this, and until we actually have a "virgin" centipede produce fertile eggs, there is no way of proving anything.

Cheers,

Randolph XX() · Jul 8, 2005

i think it's quite possible that they can reproduce parthenogenetically
think of how subspinipes spp spreaded to pacific islands ,probably started by a single female traveled from a piece of floating bark like some geckos

danread · Jul 8, 2005

Randolph XX() said:
i think it's quite possible that they can reproduce parthenogenetically
think of how subspinipes spp spreaded to pacific islands ,probably started by a single female traveled from a piece of floating bark like some geckos

Thats no proof that it was by parthenogenesis, it could just have easily been gravid females that started the populations.

Crotalus · Jul 8, 2005

Is there any documented cases of PG among inverts at all? Herps I know of but so far I never heard of a invert. Spiders lay infertile eggsacks without been mated yes, and now the egglaying scolo but thats about it.

/Lelle

Steven · Jul 8, 2005

mmm,... PSG1 ??? (i'm not an expert but are those phasmids not known for their parthenogenetic abilities ???)

Nikos · Jul 8, 2005

Crotalus said:
Is there any documented cases of PG among inverts at all? Herps I know of but so far I never heard of a invert. Spiders lay infertile eggsacks without been mated yes, and now the egglaying scolo but thats about it.

/Lelle

Some scorpion species are parthenogenetic.
Tityus, hottentotta, liocheles are some genus exambles, however not all species within a genus are parthenogenetic.

danread · Jul 8, 2005

Off the top of my head, i also know that many aphid and true bug species are parthenogenic.

Crotalus · Jul 8, 2005

vardoulas said:
Some scorpion species are parthenogenetic.
Tityus, hottentotta, liocheles are some genus exambles, however not all species within a genus are parthenogenetic.

And this is cases with a scorpling raised to adulthood and not in contact with others?

/Lelle

Nikos · Jul 8, 2005

correct.
There are numerous published papers about this (especialy about Tityus spp.)
some exambles:

LOURENCO W.R. (1991): Parthenogenesis in the scorpion Tityus columbianus (Thorell) (Scorpiones: Buthidae) – Bulletin of the British Arachnological Society 8(9): 274 - 276

LOURENCO W.R. (2000): Reproduction in scorpions, with special reference to parthenogenesis – European Arachnology 2000: 71-85

LOURENCO W.R. & J.L. CLOUDSLEY-THOMPSON (1999): Discovery of a sexual population of Tityus serrulatus, one of the morphs within the complex Tityus stigmurus (Scorpiones: Buthidae) - The Journal of Arachnology 27: 154-158

LOURENCO W.R., CLOUDSLEY-THOMPSON J.L. & O. CUELLAR (2000): A Review of Parthenogenesis in Scorpions with a Description of Postembryonic Development in Tityus metuendus (Scorpiones, Buthidae) from Western Amazonia - Zoologischer Anzeiger 239: 267-276

LOURENCO W.R. & O. CUELLAR (1994): Notes on the geography of parthenogenetic scorpions – Biogeographica 70(1): 19-23

LOURENCO W.R. & O. CUELLAR (1995): Scorpions, scorpionism, life history strategies and parthenogenesis – Journal of Venomous Animals and Toxins 1: 51-62

LOURENCO W.R. & O. CUELLAR (1999): A new all female scorpion and the first probable case of arrhenotoky in scorpions - The Journal of Arachnology 27: 149-153

Wade · Jul 8, 2005

Lots of parthenogenisis among inverts, actually. As Steven mentioned, phasmids are a prime example, nearly all of them can reproduce parthenogenically and some do so exclusively. Brunneria borealis is an exclusively parthenogenic mantid, and other species have been known to occasionally reproduce this way. It's been reported in some millipedes as well. I'd be surprised if there weren't lots of other examples.

I beleive Dave Galban has raised scorpions from birth to adulthood without contact with others and had them reproduce. Not sure which species he was working with however.

Parthenogenesis seems entirely possible with at least some centipdes, but hasn't been conclusively proven AFAIK.

Wade

Bigboy · Jul 9, 2005

huh?

Please excuse my ignorance, but what is a phasmid?

Wade · Jul 9, 2005

Walkingstick, or stick insect.

Wade

Bigboy · Jul 13, 2005

oh

Ahh, ok thankyou Wade.

TimV · Jul 13, 2005

As dan pointed out, the term is parthenogenic, not parthenogenetic or whatever.

You get that in lots of plants and animals, like mosquitoes, bees, oranges, mangos, et. al.

It comes from the Greek word for virgin, and the Parthenon in Greece was named from a praise name from Diana, the Virgin Goddess.

Shapedoctor · Jul 17, 2005

Crotalus said:
Is there any documented cases of PG among inverts at all? Herps I know of but so far I never heard of a invert. Spiders lay infertile eggsacks without been mated yes, and now the egglaying scolo but thats about it.

/Lelle

Ants can do it, although when referring to parthenogenesis it might be better to say they don't have to do it.

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