marmoratus eggs temperature

[eljorgo]

Yep, After my Cynops fire belly laid 65eggs (all fertile:dizzy my marbled ones went crazy and Just today I found 30eggs and 2 larvae of about 1,5cm! in the elodeas there were one egg (embryo evolving) and ceratophyllum not even one egg. Pistia stariotes, a huge load of them! And I feel really bad because I go to the tank almost every day watch If there are any eggs and just now I saw a lot, and: 2 Larvae! I´was so blind! The tank water is around the 14ºC. I collected all the eggs and bring inside. But my aquarium heat, puts the water at 25ºC/26ºC and don´t go down... Can I put those eggs inside? Will they die? I´m afraid of killing them that way because the big tempratures. Also, my daphnia culture is very little and In 2 days I´m hoping to have 25 hatchlings of cynops F.B. and over 10 of T.marmoratus and it continues... I don´t want to join them will the fire bellies... but i just have no option... I don´t have another heat device... can I join, advisable?
thanks all helps.

 

[Jennewt]

A tank at 25C will kill them! I hope you are not keeping your firebelly larvae at this temperature, it will kill them too.

Why not keep the eggs in the same area (different tank) where you have the adults (unheated)? This would be best.

 

[Greatwtehunter]

As a warning just be prepared to loose 50% of your eggs due to the genetic defect at tail bud formation. Tank temps for the eggs should be around 12-16C.

 

[eljorgo]

hey. well, I make a trade. I put a heater at 25ºC for the ADULT fire belly couple and im keeping the eggs of fire belly at 20ºC. Also I today are going to put the marbled ones inside a dish at 20ºC too. I don´t let them out, or without heater because it´s very cold here! outside are 12ºC!
They never grow! So just because I wanna to speed the growth I keep both eggs batch at 20ºC and the adult at 25ºC.. don´t have another choice... I think that I´m going to lose less that 5 eggs because the majority of them are already in advanced growth stage... Also, this is not the total amont of eggs, cause the females are very fat and I´ve just putted some hygrophylas and plastic stips so I espect to have a huge fresh load of them when I comeback home.
I´ve taken pictures of the embryos, I´ll show them later! thanks,

 

[Mark]

12C is not cold for a newt. They remain active at temperatures just above freezing. A sustained 25C on the other hand will probably kill your newts and larvae.

My marmoratus are laying at the moment and their water temp is around 10C - and that's how it's staying. There's no need to heat.

 

[slowfoot]

Maybe I'm missing something, but why do you need to keep anything at 25C?

 

[eljorgo]

ok. I will let them without heat. Inside the house it´s 16ºC and I´ll not use nothing. Also slowfoot you got it wrong because I don´t want to keep nothing at 25ºC i wanted to keep the eggs at 20ºC to speed up but I will let them at the atmospheric condition... I have found a total of 8 larvaes of 1,7cm+- so cute. thanks by your help, realy apreciate the consern. thanks all,
chip.

 

[Jennewt]

From reading your post, I had the same impression as slowfoot - it really sounds like you are determined to keep a tank at 25C. There are no newts in this world that need that temperature. All of them (adults and larvae) should be at a maximum of 20C. I do think 12C may be a bit too cold for Cynops, but not for marmoratus. All of them would be happy at 16C.

Best of luck and enjoyment with the larvae:happy:

 

[Ingo]

AW: Re: marmoratus eggs temperature

Hello Jenn,

the temperature for my Cynops pyrrhogaster sasayamae are going down to 6°C at wintertime, and they are aktiv.

I do think 12C may be a bit too cold for Cynops, but not for marmoratus. :happy:

@aljorgo:
feeding larvae:
for the beginning it will be a good choice to start with cuturing artemia nauplia.

Greetings Ingo V.

 

[eljorgo]

ok, thanks all.

like I said:

"I put a heater at 25ºC for the ADULT fire belly couple and im keeping the eggs of fire belly at 20ºC. "

But it doesn´t matter. the heaters are all set off, less the cynops batch that is at 20ºC.
I´ve found more one larvae swimming around in a total of 9. Also today more 20eggs... let see how many survive....

marbled embryos:

Cynops embryos!

thanks all,

 

[Jennewt]

Beautiful photos, eljorgo, thanks for posting them!

 

[eljorgo]

thank you Jen, these were with a normal lens and cuting the photo down reduced a lot the quality but... I don´t have macro lens for canon EOS400D... Soon I´m going to buy one...
Oh, I have at the moment:

124 eggs of Triturus marmoratus (almost all in advanced level of growth)

70 eggs of Cynops orientalis (20 ready to hatch)

12 young Triturus marmoratus larvae

The two marbled females still very fat, (I think I will have to sell the eggs)
The cynops female is much more skiny. If she put some more, I think no more than ten.
Lets see If I can handle it all. thanks all help,
chip.