Kaiseri eggs (F2)

Update on kaisei larvae . lost a lot on the way but the finaly settled down and they are starting to colour up. I will try and post a few pics but they are a bit dark. I have had big loses in small tanks without filteration, but the lge tank with external filter has been much more succesfull. I have done small 2 ltr water changes daily, if i have done larger water changes i had losses. I also turned off the lights completeley, they just have natural light which they seem to prefer. You cant keeep them full they never stop eating so if you are planning to breed them get plenty of brine shrimp and daphnia ready!

Cheers Martin :happy:
 

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With breeding seasons to come you will lose less and less eggs as the female becomes more experienced / mature. Your larvae are looking great! Good job on producing F2's!
 
Had 2 of them finally on land and looking very smart :happy:. I cant get over how big they are compared to other newts i have reared, they are massive. I have got another 6 nearly there and will post photos once i get my PC back from the workshop ( picked up that virus). :(

Martin.
 
Took some photos last night, 6 are now on land but seem very happy staying in the aquatic set up.They are growing very well and are now 3 inches long. The are feeding on land or in the water so they are very easy to look after. :happy:
 

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They are looking awesome mate, how many left in the water?
 
30 left in the water mate but not far off coming out!!!! :happy:
If they behave like their siblings it should only be a matter of a few weeks.
Compared to other newts i have raised they seem to hang around a bit and are quite content to stay aquatic.

Cheers Martin :happy:
 
My juveniles stay 100% aquatic, they have access to land but I never see them use it. Perhaps it is a preference for all CB N.kaiseri, or even WC for that matter. I'd feel mean making them terrestrial for 9 months of the year before they are sexually mature >_<. I wonder if its possible that some of your juveniles never actually make it to a terrestrial period and just opt to stay aquatic all the time, that would be interesting.
 
Outstanding! I hope you folks don't mind if I add your data to the growing library I am building on this species...

Keep those updates rolling in. I cannot wait for next year and my first chance at F2.
 
Gladly use the data to help future breedings, most of the help i got was from your postings on kaiseri breeding ( and a few others on this site).
My juvs seem very happy staying aquatic and when i raised their parents in a terrestrial set up i hardly got to see them in 2 yrs, these guys are much bolder in the aquatic set up and are easier to look after. When i raised their parents i used to have to move all the cork bark stacks to check on them. These juvs come to the front of the aquarium for feeding and i can check on them daily without disturbing them at all.

Cheers Martin. :happy:
 
People who have kept N. kaiseri permanently aquatic in the past have experienced sudden & unexpected losses. In my opinion, keeping this species permanently aquatic keeps them in a high metabolic rate year round and ultimately leads to stress.
 
I too fully beloved in seasonal cycling. While I researched extensive, I ultimately went with copying their natural environment as much as possible.
 
I now have seven yougsters in a terrestrial set up, same kind of set up as i keep their parents in, plenty of cork bark stacks,composted bark mixed with ecoearth for substrate, one end damper than the other,plenty of ventilation, damp moss and a waterbowl. There are a few more looking almost ready but not rushing them just yet!
Thanks for the advice Alan and Johny. :happy:
 
Last post on my F2 kaiseri, i thought i would post a final few photos now that they are fully terrestrial and have been eating well for several weeks. I am very pleased with how they have turned out and looking at how bright the orange is all the effort with the brine shrimp and daphnia has paid off! They are eating lesser waxmoth larvae,2nd instar crickets, small earthworms, and tropical woodlice. They dont seem to bothered with bloodworm. They are being kept like i keep my adults in a large really useful box with loads of ventilation,lots of cork bark stacks and a small water bowl.Photos not great they dont hang around for long!!!!!!

All the best Martin :happy:
 

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Brilliant work! Make sure they get some carotenoids in their diet (such as in bloodworms) to provide the oranges in their colouration. Carotenoids may also function in immune competence and influence future breeding success. Maybe hand-feeding bloodworm (or live bloodworm on a piece of kitchen roll) would work; there are also commercial supplements available, but I'm not sure how good they are.

Chris
 
Awww...they look lovely!
It´s nice to read threads like this, from egg to juvie.

The commercial supplements work very well indeed, but you need to be careful as with any other supplement because overdosing is dangerous. Avoid the ones that use vitamin A, since they can cause liver toxicity. The best ones i think are those that directly contain canthaxanthine and asthanxantin.
Bloodworms are not very good for this purpose since the deep red comes from haemoglobin and the actual content of carotenes is not particularly high. For best results use crustaceans, particularly gammarids.
 
That's interesting re the bloodworms. I was aware that they had high levels of haemoglobin, but thought that they contributed towards colour, too - you learn something new every day!

Chris
 
Oh they do, they contain carotenes, but not a significant amount which means that they have a limited effect on belly coloration (for example in Cynops they create a moderately red belly, rather pale when compared with WC animals). When compared to the effect of crustaceans, the difference is very significant.
 
do the larvae/eggs require the same water hardness /ph as the adults when rearing them or do they do quite well in containers void of rocks but heavily planted with hides?
 
Different set ups have been successfull, i know people who have reared them in tubs with just plants, i tried this and had a lot of losses, my water is very soft here so i add a buffer in my external filter, i rear the eggs in mineral water and the larvae in a large aquarium with an external filter an a uv sterailizer, lots of plants and rocks for the larvae to hide in.
So in answer to the water hardness, not sure, maybe split your eggs into 2 batches and see how you go. My mate reared his in a still aquarium no filteration, lots of plants and rocks, no problems. Not sure what the water hardess is like in his area but it can vary a lot, so maybe the people rearing in tubs might have natural hard water.
My set up has quite a lot of water movement and the larvae and the adults seem to like it, they sit under the spray bar right in the flow. Because i reared them this way last year i have stuck with the same set up.It is not to say that this way is any better i am just more confident with this set up. :happy:
 
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