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D. duellmani

2833 Views 23 Replies 10 Participants Last post by  frogsintn

Can anyone tell me about the status of D. duellmani in the hobby? Is it established? A few poached individuals?

How about terrarium observations? Is it any different from the other thumbs?

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Recent molecular work in our lab (Kyle Summers lab) shows that D. duellmani as it was originally described does not appear to be a valid species. Rather, it is really a striped form of reticulatus, which goes well with what other people have been saying. The Tamshiyacu-Tahauyo 'duellmani' (with yellow sides) is actually not related in any way to the true nominal duellmani. It is much more closely related to the fantasticus group. Mark is correct in saying this frog is currently being described as a new species. As far as amazonicus goes, as far as I am concerned this species is BS. The Iquitos-region ventrimaculatus group is so widely variable that it is more than likely we are just looking at variation among a freely-interbreeding population. For example, coloration/pattern (full-Y mark, nose spot, yellow, orange, red) motifs are not discrete but continuous, which seems to indicate much mixing. A melting pot for vents if you will. But this is conjecture and should be cleared up within the foreseeable future.

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Sorry, I didn't mean to say your question was BS! But I mean in general, I think 'amazonicus' is a bogus species. Then again I could be wrong. This could be cleared up by next fall if Jason Brown and I can collect many more Iquitos samples (toe clips) this summer. He has been working on a molecular Dendrobates phylogeny but it still could use some stronger resolution in the ventrimaculatus group, particularly around Iquitos, S. Ecuador, and Manaus (possibly a new mimicry example here!) This stuff however might not be published for a year or so, but you guys will probably hear the results on here long before they make it into the journals.

As far as the mixing goes, that is an excellent question. Ideally one would try to maintain pure locality morphs without muddling blood from other adjacent locales. But how much gene flow occurs in nature? Nobody really knows. None perhaps. If you were to mix nominal duellmani and reticulatus you would most likely be producing a natural and viable hybrid. but if you were to mix nominal duellmani and Tamshiyacu 'duellmani' you would be producing a genetic anomaly. So I guess the answer lies in the phylogenetic relationships. But of course I would prefer to err on the side of caution and maintain pure locality morphs in the hobby - it is always easier to add new blood to a gene pool than to take bad blood out.

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