Pics of 'Hybrid' Dart Frogs

[Philsuma]

Web hosting by Ed. K. Frogs were not animals that produced under his care. Someone else 'engineered' them.

http://www.tracyhicks.com/EdK.htm

[Rusty_Shackleford]

Those are some fugly frogs!

[IEatBugs]

They definitely aren't much to look at, but look at that second picture how big that cross looks compared to any normal auratus. It's like King Kong...

[BcsTx]

As I anticipated it is encouraging mixing....
As far as the "sterile" comment I think that is incorrect.

[Rusty_Shackleford]

I believe you're correct Beth. That's where the danger comes in, releasing hybrids capaeable of reproducing, into the hobby. Unlike most hybrids, I believe I've heard that dart frogs are not sterile.

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[goods]

Sterility in hybrids is often the result of different chromosome counts in the parents. If species A with a diploid (2n) number of 32 chromosomes (n=16) breeds with species B with a diploid number of 30 chromosome (n=15), then the resulting F1 generation will have a 2n of 31 (16 from A and 15 from B). That means that one chromosome doesn't pair which leads to issues in meiosis and sterility.

If, however, species a has A 2n=34 instead of 32 (n=17), then there's a chance offspring from A x B can be fertile because the F1 would have a chromosome count of 32, and the chromosomes can pair normally. I have no idea of the chromosome counts of any dendrobatids to say whether they'd be sterile or not.

[RichFrye]

Obviously the two tincs will have the same chromosome count.
It's been awhile since I read up on the whether the auratus and leucs have the same count as the tincs, but I seem to remember that they do in fact have the same count.

[Philsuma]

I'm pretty sure I saw a pic of a leucomelas X auratus hybrid.

I really don't think that the pics are encouraging many people. I still think the hobby- old and new, is massively against hybridizing.

[Philsuma]

I'm very glad Ed K. is keeping that site and pics up.