Daphnia - incomplete molt?

B

Brandt

New member
Joined
Mar 25, 2012
Messages
2
Reaction score
0
Points
0
Country
United States
I started a daphnia magna culture 3 months ago, and it's been doing very well. However, I recently noticed something that makes me wonder it there's some sort of deficiency in my culture. Some of the larger (older) daphnia are not completing their molt entirely. That is, the molted carapace is still attached near the tail, and drags behind them as they swim. Any ideas what's causing this? Thanks!
 
Brandt said:
I started a daphnia magna culture 3 months ago, and it's been doing very well. However, I recently noticed something that makes me wonder it there's some sort of deficiency in my culture. Some of the larger (older) daphnia are not completing their molt entirely. That is, the molted carapace is still attached near the tail, and drags behind them as they swim. Any ideas what's causing this? Thanks!
Click to expand...


Perfectly normal daphnia behavior.

May want to throw a small handful of oyster shell, or lime stone in. Even better, a ground up Calcium supplement tablet. Older cultures tend to quickly use up the dissolved carbonates in the water. I find a little extra carbonate hardness in the water goes a long way with long term daphnia culture.
 
SludgeMunkey said:
Perfectly normal daphnia behavior.

May want to throw a small handful of oyster shell, or lime stone in. Even better, a ground up Calcium supplement tablet. Older cultures tend to quickly use up the dissolved carbonates in the water. I find a little extra carbonate hardness in the water goes a long way with long term daphnia culture.
Click to expand...

Very helpful (and reassuring). Thanks!
 
You must log in or register to reply here.
General chit-chat
Help Users
  • No one is chatting at the moment.
  • Shane douglas:
    with axolotls would I basically have to keep buying and buying new axolotls to prevent inbred breeding which costs a lot of money??
     +1
    Unlike
  • Thorninmyside:
    Not necessarily but if you’re wanting to continue to grow your breeding capacity then yes. Breeding axolotls isn’t a cheap hobby nor is it a get rich quick scheme. It costs a lot of money and time and deditcation
     +1
    Unlike
  • stanleyc:
    @Thorninmyside, I Lauren chen
     +1
    Unlike
  • Clareclare:
    Would Chinese fire belly newts be more or less inclined towards an aquatic eft set up versus Japanese . I'm raising them and have abandoned the terrarium at about 5 months old and switched to the aquatic setups you describe. I'm wondering if I could do this as soon as they morph?
     +1
    Unlike
    Clareclare: Would Chinese fire belly newts be more or less inclined towards an aquatic eft set up versus... +1
    Back
    Top