Daphnia breeding method Daphnia pond culture method

Daphnia refers to two major groups of zooplankton of aquatic cladopods and flexopods, which are rich in nutrients and easy to digest, and are palatable bait for loach seedlings and loach species, which have high breeding value, and we should also pay attention to daily breeding management, so, how to reproduce daphnia? Let's take a look.

1. How Daphnia reproduce.

Materials: two pieces of gauze, one piece of thread, one plastic basin, one straw, one pair of scissors, a small piece of bean dregs (the residue left over from beating soy milk), and a few small stones.

Method: 1. Cut the straw into small sections of about 3cm in length with scissors, wrap it with gauze, put in a few small stones (to ensure that it can sink to the bottom), and tie it up with thread (to prevent it from falling apart).

2. Wrap the bean dregs with gauze, prevent a few small stones (to ensure that they can sink to the bottom), and tie the mouth with a thread.

3. The basin should be filled with water, and it should not overflow about 2 3cm away from the basin mouth.

4. Sink the wrapped straw and bean dregs into water.

5. Pour the Daphnia seeds into the water.

6. Put the basin on the balcony and other places with sufficient sunlight.

Effect: After about a week in summer, you can see the green at the water's edge, and the water fleas inside are dense.

Fishing: Scoop out the big daphnia on the water surface every day, try not to fish the small ones, and keep the seeds to continue to grow, so that the production can be stable after about 15 days.

Maintenance: If the water is too clear, add a little okara, if the water is too small, just add some tap water.

2. Daphnia breeding methods.

1. Bean bran breeds daphnia:

Take a clean, large-capacity container, such as a cooking oil can, add an appropriate amount of peanut bran and clean water to it (the ratio is roughly 1:15), then tighten the cap and leave it for a while. After the peanut bran is fully fermented, its leaching solution can be used for green water culture (green water can be used as food for daphnia, and can also be used as a reference to the Japanese method of mixing green water with clear water when changing the water for goldfish), and the residue at the bottom can also be used as a base fertilizer for Daphnia culture.

In this way, the appearance of oil films can be avoided.

2. Propagation of Daphnia with yeast:

At first, we used yeast to propagate daphnia, but in the middle of it, I felt that it was a long time to dissolve yeast with water every day, which was a bit troublesome. And the dosage of yeast is not well controlled; Although it worked well at first, it was possible that the water quality problem was not able to increase the number of reproductions, and finally it was abandoned.

Through the above introduction, we now know how to breed daphnia, the temperature rise is a good season for daphnia to breed, the miniature daphnia bred by daphnia can just be used as small fish, such as guppy fry opening food, fry feed live food production speed is fast, we must do a good job in related breeding management.

1. The provenance is the key to raising Daphnia, and a large number of people will die when they are harvested in the wild, so they must be domesticated and watered, and they can also buy domesticated provenance.

2. Daphnia feed Daphnia is a food animal, the key to raising a good Daphnia is to first raise Daphnia food, bacteria and algae, we can choose Daphnia feed according to the size of our needs.

3. The temperature is 18 to 25 degrees Celsius, the pH value is the most suitable, and there is absolutely no need for oxygen supply. Daphnia swim is very poor, and too large water surface fluctuations can make the water flea unable to forage for food and die.

4. Daphnia farming is similar to fish farming, the appropriate water temperature pH value, dissolved oxygen amount can not be considered, and the water stinks and Daphnia does not matter much better than fish. Just remember to protect the seed source, in case a large number of dead seeds are gone, you have to find seeds.

5. Green water aquaculture: it is to cultivate green water, and the cultivation of green water can be taken directly from the fish pond or cultivated by yourself. Self-cultivation is recommended as fish ponds everywhere contain many other microorganisms.

The easiest way to self-cultivate is to use fish tank wastewater + liquid fertilizer (base fertilizer is OK) + your own urine. Leave it in the sun for a few days. Many people know this method and don't introduce it much.

You can also buy some spirulina directly and come back to cultivate, spirulina is relatively easy to break out. The advantage of this method of breeding Daphnia is that you do not need to clean the flea tank frequently, and you only need to add green water regularly.

Daphnia is a common freshwater small animal and an important indicator organism of aquatic ecology. They live in freshwater and are an extremely important link in water bodies. For the breeding of aquatic plants, ornamental fish, aquaculture and other fields, the role of Daphnia cannot be ignored.

How do you raise daphnia? The following is an introduction to the cultivation method of Daphnia.

1.Daphnia breeding container: Daphnia is generally suitable for glass or plastic containers, preferably round or oval, and the height of the container should be greater than 2 3 Daphnia body length, so as not to jump out of the container.

2.Daphnia water quality: Daphnia farming needs to keep the water clean and clear, and the water quality should be suitable for the living environment of Daphnia. In general, Daphnia are suitable for growth and reproduction in water bodies with a pH and water temperature between 15 and 25.

3.Feed for Daphnia farming: Daphnia feed is mainly based on algae, and some fish or meat food can be appropriately added to the reed hole core, but it is necessary to pay attention to the feed not to be too much and too thick. Feed once or twice a day, and the amount of feeding should be appropriate to the number of Daphnia farmed.

4.Precautions in the breeding process: the reproduction rate of Daphnia is very fast, therefore, in the breeding process, it is necessary to change the water quality regularly, while keeping the container clean and hygienic, and also pay attention to the control of water temperature to avoid the death of Daphnia caused by too high or too low temperature.

In short, although Daphnia farming is simple, it also needs to pay attention to many details, if you can master the breeding skills and precautions to accompany the digging, I believe that you will be able to successfully breed a large number of healthy Daphnia.

1. Temperature environment: Daphnia.

It grows well at 18-25 degrees Celsius.

at a temperature. 2. Base fertilizer preparation: provide it with well-rotted farm fertilizer, bean dregs and distiller's grains and other substances.

3. Reasonable breeding: pour Daphnia directly into the pond. 4. Reproduction method:

Daphnia reproduce rapidly in water temperatures of 20 degrees Celsius and are mainly parthenogenesis.

1. Temperature environment

Daphnia reproduce faster in warm water temperatures, and the most suitable temperature for growth is 18-25 degrees Celsius, so when breeding daphnia, it is necessary to keep the water level of the pond at about meters to avoid the water flea floating on the surface of the water and getting frozen.

2. Preparation of base fertilizer

Daphnia mainly take the form of bacteria and yeasts.

and algae. In order to provide food, it is necessary to add farm manure and domestic residues to the water during the breeding process, so that a large number of bacteria can grow in the water and ensure that Daphnia have sufficient food.

3. Reasonable breeding

When breeding Daphnia, prepare a water bottle with clean water, remove it from the river water, and then transport it to the pond with a bottle, and ensure that the water quality is clean, if the water quality is too turbid, it will lead to the death of Daphnia.

4. Reproduction method:

Daphnia is relatively easy to reproduce when the water temperature is 20 degrees Celsius, and the rate of reproduction is fast, generally in late spring and early summer when they begin to reproduce and lay eggs, at this time the mode of reproduction is parthenogenesis, and the eggs of the daphnia will continue to grow in the water.