Culturing Daphnia

[Ronnie Lau]

Heard from someone that banana skin in water will produce infurosia which can be food for Dapnia thereby prolonging live span or even enabling a culture.
Bought two extra packets of Daphnia last Sunday - aerate them in same wide surface containers but one with banana skin. This morning the murky water with the skin seems to have more live daphnia than the other. The daphnia are more mobile and like to congregate around the skin. Hopefully this will eliminate the "spending of $5.00 petrol to buy $2.00 dapnia every other day" frustration...
cheers.

[kennho]

According to some China farms, daphnia culture pond using chicken and pig dunk to increase the bacteria growth for these little fleas to feed on. Do let us know the outcome of your banana daphnia.

[kennho]

According to some China farms, daphnia culture pond using chicken and pig dunk to increase the bacteria growth for these little fleas to feed on. Do let us know the outcome of your banana daphnia.

[Myron Tay]

Prefer to skip the entire daphnia as food option and cultivate microworms and hatch bbs instead.

[Myron Tay]

Prefer to skip the entire daphnia as food option and cultivate microworms and hatch bbs instead.

[Sebas]

quote:Originally posted by kennho

According to some China farms, daphnia culture pond using chicken and pig dunk to increase the bacteria growth for these little fleas to feed on. Do let us know the outcome of your banana daphnia.



yeap yeap, that will explain the smell these tiny buggers. I guess you've seen the unwashed packets of daphnia, totally the same smell and color wise. :O~~~~

[Sebas]

quote:Originally posted by kennho

According to some China farms, daphnia culture pond using chicken and pig dunk to increase the bacteria growth for these little fleas to feed on. Do let us know the outcome of your banana daphnia.



yeap yeap, that will explain the smell these tiny buggers. I guess you've seen the unwashed packets of daphnia, totally the same smell and color wise. :O~~~~

[Lim Aik Seng]

haha jus happen to find more abt daphnia
did any of u success in culturing them ???
u see i live at sengkang go ubi buy daphnia everyday(if gt spawn lar)
very tired sia

[Phil]

In Indonesia, I know they do use banana leaves to cover their daphnias. They cut the leaves and leave them in the water. What I really don't know is whether the daphnia can really strive just on banana leaves.

[Lim Aik Seng]

okok
but do u try before culturing them ????

[Phil]

I think you meant dry. No they don't. Just straight from the tree into the tub.:D

quote:Originally posted by Lim Aik Seng

okok
but do u try before culturing them ????

[Ong Ginyew]

quote:Originally posted by Ronnie Lau

Heard from someone that banana skin in water will produce infurosia which can be food for Dapnia thereby prolonging live span or even enabling a culture.
Bought two extra packets of Daphnia last Sunday - aerate them in same wide surface containers but one with banana skin. This morning the murky water with the skin seems to have more live daphnia than the other. The daphnia are more mobile and like to congregate around the skin. Hopefully this will eliminate the "spending of $5.00 petrol to buy $2.00 dapnia every other day" frustration...
cheers.


u mean adding banana skin into daphina will prolong daphina's live?

[Foo Hong]

ladies n gentlemen,
whatever u throw into the daphnias' water the idea is to produce bacteria[all sorts so daphnias eat them]. if u throw too much banana n rambutans n coconuts in it u had better ensure u have some form of aeration n most importantly sunlight! otherwise the materials will foul n u get dead daphnias.

do u know if u leave aged water in the oen under hot sun, and u add just 1 daphnia[satu!], over time, algae will start growing n yr satu becomes ratus! Even bloodworm flies will come lay eggs! Free foods[ betta's...not yours!] [eb]

[Ong Ginyew]

so culturing daphinas at home can b done?

[Samuel Phan]

Make sure your daphnia culture tank do not become a tank for the mossies ... you might end up being slapped with a hefty fine. ;)

[Myron Tay]

quote:Originally posted by Sebas

From: http://adsabs.harvard.edu
Title:
The Haemoglobin of Daphnia
Authors:
Munro Fox, H.


"Daphnia is often coloured pink or red by haemoglobin in solution in the blood. This applies to pond-living but not to lacustrine species. A Daphnia species may vary from red to colourless in different ponds or in the same pond at different times. In the laboratory individual Daphnia can be seen to lose or gain haemoglobin in the course of a few days. Daphnia loses haemoglobin in well-aerated water and gains haemoglobin in water containing little dissolved oxygen. Abundance of parthenogenetic young may be taken as a criterion of good nutrition; judged by this standard, good nutrition alone does not result in abundance of haemoglobin. Nor is chlorophyll in food a cause of haemoglobin production. There is a haemochromogen in solution in the intestinal fluid of Daphnia. Like helicorubin in the snail it shows reversible oxidation. In quantity it is proportional to the haemoglobin of the blood, which suggests that it may be an excretory product of haemoglobin. Yet it occurs in a lake plankton species lacking the blood pigment. Occasionally one of the two excretory shell glands of Daphnia contains concentrated haemoglobin. This pathological condition may be an indication that haemoglobin is normally excreted as such by the shell glands. The presence of haemoglobin in the blood of Daphnia suggests a respiratory function. The increase in quantity of the haemoglobin in response to oxygen deficiency, just as in man, supports this thesis. Nevertheless, there appears to be no such function. Animals whose haemoglobin is functionally inactivated with carbon monoxide are as vigorous and survive as well as untreated animals, at all concentrations of air dissolved in the water. Haemoglobin is present in the parthenogenetic eggs of Daphnia as well as in the blood. Respiratory conditions in the brood pouch of parthenogenetic females are not good. This suggests an importance of haemoglobin in parthenogenetic development. Experiments in which the haemoglobin was functionally inactivated by carbon monoxide showed that the respiratory pigment of the egg does have a favourable influence on late stages of the parthenogenetic embryo. Fertilized eggs, in ephippia, contain no haemoglobin. Nevertheless, they develop as well in water deficient in oxygen as in aerated water."

What can we learn from this?
We should not judge whether a bag of daphnia is fresh or not simply by looking at the color of the daphnia.

[Tan Nguyen]

I've only had my culture a month or so but now I've got them going indoors on green water
They've been reproducing pretty well so far

To make the green water, I use the dirty water from changing the fish's water with droppings and put it outside in a tub in full sunlight. After a few days the water will turn green and I scoop some and add it to the daphnia tank. Once the the water in the daphnia tank goes clear, I scoop it out and put it in a pond outside so there's daphnia inside and outside

Seems to be working great so far

[Eli Badran]

Green water + Bread backing yeast (the good old fassioned one)
this is the cheepest food - and most avaliable (!) for dapfnia!