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Captive repro of Hemidactylium

This is a discussion on Captive repro of Hemidactylium within the Plethodontids and Lungless Salamanders (Bolitoglossa, Eurycea, Plethodon, etc.) forums, part of the Species, Genus & Family Discussions category; FYI I did manage to get 16 Hemidactylium metamorphs out of a clutch of 30 eggs laid this spring at ...

Plethodontids and Lungless Salamanders (Bolitoglossa, Eurycea, Plethodon, etc.) The largest, and one of the most diverse groups of salamanders, these salamanders have all evolved to breathe solely through their skin and are found almost exclusively in North America.


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Old 10th June 2008   #1 (permalink)
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Default Captive repro of Hemidactylium

FYI I did manage to get 16 Hemidactylium metamorphs out of a clutch of 30 eggs laid this spring at the zoo. This is our third year getting eggs out of them, but the first year we got any hatchlings. I think I still have a gravid female, the winter temps got screwed up so hopefully she'll lay soon too.

No photos yet, but I'll try to get some soonish. They are doing well and growing fast.

The glutinosus from earlier this year is also doing very well.

-Tim



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Old 10th June 2008   #2 (permalink)
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Default Re: captive repro of Hemidactylium

Tim, that's great news! Has anyone ever bred Hemidactylium in captivity before?



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Old 10th June 2008   #3 (permalink)
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Default Re: captive repro of Hemidactylium

Pardon my ignorance please, but what zoo is that? Congratulations!



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Old 10th June 2008   #4 (permalink)
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Default Re: captive repro of Hemidactylium

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Originally Posted by Kaysie View Post
Has anyone ever bred Hemidactylium in captivity before?
At least one breeder in Germany has bred them this year.



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Old 10th June 2008   #5 (permalink)
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Default Re: captive repro of Hemidactylium

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Originally Posted by axolotl_jake View Post
At least one breeder in Germany has bred them this year.
I've got eggs too, but that's the easy part. They are near hatching. I hope it will turn out good.



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Old 10th June 2008   #6 (permalink)
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Default Re: captive repro of Hemidactylium

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Originally Posted by coendeurloo View Post
I've got eggs too, but that's the easy part. They are near hatching. I hope it will turn out good.
Congratulations Coen! That's great news. Good luck with the babies.



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Old 10th June 2008   #7 (permalink)
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Default Re: captive repro of Hemidactylium

Tim said zoo - what zoo?



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Old 11th June 2008   #8 (permalink)
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Default Re: captive repro of Hemidactylium

Here's a link to Tim's previous caudate breeding success:
Plethodon glutinosus eggs
which happens to mention Toledo



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Old 11th June 2008   #9 (permalink)
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Default Re: captive repro of Hemidactylium

Thank you for posting that link Jen and thank you Tim for sharing your accomplishments :).



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Old 11th June 2008   #10 (permalink)
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Default Re: captive repro of Hemidactylium

Yes, sorry about that. It is the Toledo Zoo.

Good luck with the eggs Coen, they always failed pretty early for me, so if they make it to late term you should be good. Make sure they have very easy access to water when they are about to hatch. In the wild I've seen them hatch during rain events, so they may have to be flooded out. I transferred the eggs to a grow out tank and half submerged them when they were at full term.

-Tim



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Old 12th June 2008   #11 (permalink)
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Default Re: captive repro of Hemidactylium

This is the way I keep them. I rearranged the mossy branches when I discovered the eggs so they hang over the shallow waterbowl.

The tank:
Click the image to open in full size.

The eggs:
Click the image to open in full size.

H. scutatum on a branch:
Click the image to open in full size.



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Old 12th June 2008   #12 (permalink)
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Default Re: captive repro of Hemidactylium

Beautiful photos, thanks for sharing.



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Old 12th June 2008   #13 (permalink)
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Default Re: captive repro of Hemidactylium

congrats, thats really neat



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Old 13th June 2008   #14 (permalink)
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Default Re: captive repro of Hemidactylium

Coen,
Do you manage to actually grow that moss or are you replacing it from time to time? Nice setup in any case.
Chip



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Old 13th June 2008   #15 (permalink)
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Default Re: captive repro of Hemidactylium

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Originally Posted by freves View Post
Coen,
Do you manage to actually grow that moss or are you replacing it from time to time? Nice setup in any case.
Chip
I have gotten those pieces of wood from outside. I have noticed that it actually does grow, Though I'm not sure if it will maintain for years on end - I'll just have to see. I have some spare pieces of wood with moss on it outside if a replacement is needed.



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Old 15th June 2008   #16 (permalink)
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Default Re: captive repro of Hemidactylium

Kamil recently had some success (actually the past 2 years) with this species. He requested that I post the following links to show how the breeding has been going.

http://lungenlos.de/index.shtml?hemidactylium_scutatum

http://triturus.de/index.shtml?v_hs1

http://triturus.de/index.shtml?v_hs2

http://triturus.de/index.shtml?v_hs3



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Old 16th June 2008   #17 (permalink)
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Default Re: captive repro of Hemidactylium

Those vids are excellent, and I've already translated the breeding report a while ago, very nice!

Well, the eggs are near hatching. I've placed the piece of wood with the eggs in a different shoebox with about 3 cm of water, taken from my daphnia culture, so there should be some microfood available when they hatch.

Click the image to open in full size.

I've sprayed the eggs as Tim suggested, I'll keep on doing that every now and then to see what will happen. This is all very exciting, I hope it will turn out well.



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Old 17th June 2008   #18 (permalink)
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Default Re: Captive repro of Hemidactylium

Good luck Coen, the eggs look perfect!

-Tim



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Old 2nd July 2008   #19 (permalink)
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Default Re: Captive repro of Hemidactylium

And they're off...

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

All the eggs hatched last night, at the moment I have 17 larvae swimming around, and about 5 eggs were infertile. 1 larvae had some problems hatching and is now a little crooked, laying still on the bottom. I'm not sure if this one will make it. The larvae are relatively small, so I've setup a artemia hatchery. The larvae are very active and shoot to all sides whenever I come close to watch or photograph them.



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Old 4th July 2008   #20 (permalink)
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Default Re: Captive repro of Hemidactylium

Congratulations!

I did set up a side by side trial with larvae in an established tank with diverse microfauna, and another group getting just brine shrimp nauplii. The brine shrimp group grew much slower and eventually I moved them to other tank.

I'd suggest collecting some other microinvertebrates if possible to augment their diet.

Good luck!
-Tim



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