Captive care and breeding of Pachyhynobius shangchengensis

FrogEyes

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Frank PASMANS, Geert P. J. JANSSENS, Max SPARREBOOM, Jianping JIANG and Kanto NISHIKAWA,, 2012. Reproduction, Development, and Growth Response to Captive Diets in the Shangcheng Stout Salamander, Pachyhynobius shangchengensis (Amphibia, Urodela, Hynobiidae). Asian Herpetological Research 3(3): 192-197

Abstract [FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]The Shangcheng stout salamander ([/FONT][/FONT][FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]Pachyhynobius shangchengensis[/FONT][/FONT][FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]) is a poorly known stream dwelling hynobiid salamander from China. We studied the reproduction, development and growth response of the salamander to different diets in captivity. Two females each produced two unique, striated egg sacs, with each containing 18 and 20, and 22 and 32 white eggs with an average diameter of 3.3 mm. Hatchlings (n = 27) had front- and hind-limb buds [/FONT][/FONT][FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]with interdigit membranes and a large yolk sac, and developed cornified finger and toe tips during further development. [/FONT][/FONT][FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]Metamorphosis occurred between d 441 and d 454 after hatching at an average total length of 94.8 mm (n = 21). These [/FONT][/FONT][FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]reproductive and developmental traits fit in well with the ancestral state reconstruction in hynobiids. If corrected for [/FONT][/FONT][FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]dry mass, feed conversion ratios obtained by feeding bloodworms (Chironomidae) to [/FONT][/FONT][FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]P. shangchengensis [/FONT][/FONT][FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]larvae and mealworms ([/FONT][/FONT][FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]Tenebrio molitor[/FONT][/FONT][FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]) to postmetamorphs, were very low (0.33 and 0.34 respectively), equaling a very high [/FONT][/FONT][FONT=Times New Roman,Times New Roman][FONT=Times New Roman,Times New Roman]mass conversion efficiency.[/FONT][/FONT]
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  • Lilith:
    Does anyone know if aquacare general tonic is ok for axolotls as a treatment for bacterial or fungal infection?
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  • faebugz:
    Hi Lilith, you can check the medications page for a list of axolotl safe treatments. Although if the infection is mild, I would stick with fridge and salt baths!
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  • faebugz:
    I believe the fridge gets to about 54°, so if you can replicate that in the tank, it might be okay. I personally would fridge just to make catching them easier, and if the infection is something in the water column at all, it will hopefully die out while they're AWOL (I'm thinking like ich for fish, not sure if axies have an equivalent)
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  • Lilith:
    Ok, thank you!
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  • chitoos:
    My three inch axolotl was having trouble pooping up to a few days ago. I wasn't feeding her as often because I was scared I would just add to her constipation. I fridged her until she pooped (twice), and then began to feed her around 6 bloodworms every other day. she's been pooping everyday now, but she's at that age where you can see through her stomach and I always see poop ready to come out but has not yet passed. I don't think she's constipated anymore, but I'm not sure and i don't want to over or underfeed her... any advice?
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  • xxianxx:
    Feed it chopped worms chitoos, its big enough and bloodworm is nutritionaly deficient.
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  • xxianxx:
    Freeze dried , live or frozen bloodworm.
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  • chitoos:
    Oh ok thanks! I thought she might be ready for something more. do you have any advice about the apparent poop problem?
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  • xxianxx:
    @Lilith, fridging is not required for fungus treatment. Read my thread on treatment.
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  • xxianxx:
    Feed it more, six bloodworm isnt much, dont use freeze dried foods
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  • xxianxx:
    Feed daily , remove uneaten food
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  • chitoos:
    Gotcha, Thank you!
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  • xxianxx:
    Its probably not pooping because its hardly beign fed, it pooped in the fridge because the lower temp caused it to purge itself. If it stays constipated you can pm me
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  • Audrey22:
    Hi guys. Quick question. I have newly morphed eastern newt efts. They lost their gills but they still prefer the water. I have coconut fiber, moss, hidey holes and some food in the temporary habitat for them (waiting for the other newts to morph as well). But they still run back to the water. Is it the wrong substrate? Do they prefer something other than coconut fiber? I've been doing everything else properly (According to my research) but just wondering why they haven't ventured up. Have any ideas?
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  • MVM1991:
    My guess is they simply have no reason to leave. Do they still get enough food in the water? Maybe humidity is too low?
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  • Audrey22:
    I spray mist the place every day. And I do still feed him. One of them has finally come out. But now I have another problem. They don't look like eastern newts! I am posting pictures on a thread I've started. If you can, take a look for me and see. :)
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  • tammyaxie:
    Hi guys. Can someone please tell me the sex of my axolotl. I thought I knew for the past four years but a breeder told me I was wrong. PayPal: Your security code is: 138208. It expires in 10 minutes. Don't share this code with anyone.
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  • tammyaxie:
    I'm sorry, please disregard the last part. Thought I pasted a photo
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