Xenopus: possible origin of chitrid fungus

J

jennifer

Guest
I never thought I'd find myself posting in the frog forum, but here goes. For those that don't know, chitrid fungus is thought to be responsible for many cases of amphibian decline.

NEWS RELEASE
The Center for North American Herpetology
Lawrence, Kansas
http://www.cnah.org
7 December 2004

Article Title: Origin of the Amphibian Chytrid Fungus

Authors: Ché Weldon, Louis H. du Preez, Alex D. Hyatt, Reinhold Muller, and Rick
Speare

Where published: Emerging Infectious Diseases 10(12): 2100-2105 (2004)

Abstract: The sudden appearance of chytridiomycosis, the cause of amphibian
deaths and population declines in several continents, suggests that its etiologic
agent, the chytrid Batrachochytrium dendrobatidis, was introduced into the
affected regions. However, the origin of this virulent pathogen is unknown. A
survey was conducted of 697 archived specimens of 3 species of Xenopus
collected from 1879 to 1999 in southern Africa in which the histologic features
of the interdigital webbing were analyzed. The earliest case of chytridiomycosis
found was in a Xenopus laevis frog in 1938, and overall prevalence was 2.7%. The
prevalence showed no significant differences between species, regions, season,
or time period. Chytridiomycosis was a stable endemic infection in southern
Africa for 23 years before any positive specimen was found outside Africa. We
propose that Africa is the origin of the amphibian chytrid and that the
international trade in X. laevis that began in the mid-1930s was the means of
dissemination.
 
G

garrison

Guest
Wow, I can sort of believe it, but at the same time has Xenopus really been released or been in contact with all of the places where Chytridiomycosis has been found?
 
G

garrison

Guest
Huh, I forgot about the whole pregnancy test thing. Well, I guess if the fungus stays away from settled areas it only gives us more reason to try our best at captive breeding everything
 
E

edward

Guest
It does invade into the settled areas. Chytrid can be found in many regions of many countries at this point. I forget the location but it had now been documented from Asia.

Ed
 
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    Hi I recently rescued a lotl (i did weeks of research before rescuing) Hes mabey 5 or 6 years of age..the previous owner could not remember the exact age of him. I got him from her as he was or had been picked on by his tank mate another lotl who was bough with him from every younger age, I noticed one of his gills, a middle one at the end had split in two? And is slightly more floppy? He also appears or mabey I'm just over worried to mabey have lost some feathers, is that normal to lose some?...all levels in the tank are fine, but wondered if theres and advice anyone could give me as an experienced owner to a new one.
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  • Axolotl Queen:
    @Lanalotl Sounds like the gills may have been nipped by the tank mate. If he is in his own tank and the parameters etc are all good, then he should grow them back and they should go back to full health and strength. However, depending on how old the injury is they may not fully grow back if they have been constantly nipped at.
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    Can anyone tell me why this is happening? We just did a water change and after freaking out and whipping around the tank, an hour later they look like this. It won't let me send a pic. The edges of their gills are white and it looks like they have skin shedding off
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    That sounds like severe skin damage. If you post a thread on the forum, you can attach pictures.
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    It sounds like something went wrong with the water change, so this could be very dangerous. Did you use a dechlorinator? Could it be there are traces of chlorine or soap in the water? (Or for example, in the bucket you used?)
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    Normally, I would recommend taking them out of the tank asap and putting them in a tub with fresh water, but if there's something wrong with your tap water or dechlorinator, that might not help either. Do you have acces to bottled water or rain water?
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    Update about my axie, unfortunately he has died over night, he looked as if he was bruised allover his belly, his mucus layer had also started to come off.
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    hi.....
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    Hi, so I have 2 male axolotls and about an hour ago they were both perfectly fine and now only one of them has his tail curling up and his gills are slightly curled?? But other than that they’re both acting normally
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    Could be he's just excited, spooked or temporarily stressed, which could pass in a few hours. It could also be an indicator of other problems. Do you have any recent water parameters?
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    Help! I got my first axolotl two days ago and they have stopped eating. They ate a few frozen blood worms the first day and haven’t eaten or been interested in food since. I feed them frozen blood worms and the tank is around 64 degrees. I do have a filter that moves sometimes and I noticed them swimming up to it, I have a new filter and a fan coming today or tomorrow. I leave the worms in the tank or a little bit before taking them out so I don’t know if they ate when I wasn’t looking. I know it takes a while for them to digest. Does anyone have any tips or knowledge they can share? The pet store I bought them from didn’t have gravel or sand in the tank so I’m not sure if theres an issue or if I’m just impatient. Thank you!
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    @MuggleMiChu, how big they are? also for substrate, i would not do gravel at all I would either do sand or none at all!
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    They are about 2-3 inches long and I have them in a bare bottom tank
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    @MuggleMiChu I would say try live black/blood worms untell they are full or just turn there head away ( that's what mine do) if that does not work try to get some live brine shrimp and see if they eat that. baby axolotl prefer live food over frozen food as the frozen food is too cold for them or they can't eat it in one go( that's if you do the blocks) mine eat chopped up frozen thawed shrimp. as for them not eating from what I have experienced with my second axolotl, I got her when she was about an inch long and she ate every day, when they start getting 3-4 inches long they will gradually slow down there eating. and if you really want to do substrate I would do sand because if they do ingest a little bit it won't hurt them.
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    Thank you so much for the information and advice! They are eating again, they ate a lot today. I think it might have been stress from the move or digesting old food, I also noticed they ate some of the food left in the tank (I removed the rest). I’m going to keep the tank bare bottom.
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