CATDOLL : CATDOLL: Techniques for artificially cultivating large numbers of Daphnia, what kind of cell organism is Daphnia?

1. Techniques for artificially cultivating large numbers of Daphnia. What kind of cell organism is Daphnia?

1. Seed source: Seed source is the key to raising Daphnia. Generally, a large number of wild Daphnia collected will die, so they must be domesticated and watered. 2. Food: Daphnia is a filter feeder. The key to raising Daphnia is to raise good food for Daphnia. 3. Temperature: The suitable growth temperature of Daphnia is 18-25°C and the pH value is 7.5-8. Daphnia does not need oxygen during growth.

1. Techniques for artificially cultivating large numbers of Daphnia

1. Seed source

Seed source is very important for breeding Daphnia. Generally, wild Daphnia collected from outside will die in large numbers, so they must be domesticated and watered before breeding, or domesticated seed source should be purchased directly.

2. Food

Daphnia are filter feeders, so you need to first culture their food before breeding. Daphnia's food is mainly bacteria and algae, so you can choose Daphnia feed according to the amount you need.

3. Temperature

The suitable growth temperature of Daphnia is 18-25°C and the pH value is 7.5-8. It does not need oxygen supply during its growth. Daphnia has poor swimming ability and will die due to excessive water surface fluctuations.

4. Notes

The breeding of Daphnia is similar to that of fish, and Daphnia is easier to breed than fish, as long as the water temperature and pH value are appropriate. However, you must be careful when breeding, and you must protect the seed source. If a large number of deaths occur, you need to find new species.

2. What kind of cell is Daphnia?

1. Daphnia are multicellular organisms. Before cultivating Daphnia, you must prepare a container, such as a water tank, with a diameter of about half a meter, so that there is enough space for it to reproduce. The area of ​​the water body must be large, so that the water quality is easy to maintain, and the oxygen content will be relatively high, which will make it more convenient to raise. The water should not be too deep, because the water pressure will be too high, which is not conducive to its survival. Generally, half a meter is enough.

2. Daphnia need sufficient light to grow. If the environment is dark, its reproduction will be affected to a certain extent. Therefore, the breeding container should be placed in a sunny place. At the same time, the water temperature should not rise too quickly. If the water temperature rises, add cold water in time.

3. Daphnia are more suitable to live in nutrient-rich water bodies. The nutrient content of the water body must be high so that it can grow better. You can usually add an appropriate amount of organic matter to the water, such as milk, flour solution, etc., but don't add too much, so as not to deteriorate the water quality and cause a large number of Daphnia to die.

2. Can leeches grow in a place without sunlight?

Can't grow without sunlight

3. Can organisms survive and reproduce without sunlight?

Heterotrophic bacteria can. Autotrophic nitrifying bacteria can also use the energy of geothermal hot springs to synthesize nitrates with nitrogen, and then use the energy released to synthesize organic matter in the cell.

4. Why can seeds germinate without sunlight but with water?

Because the germinating seeds consume the nutrients stored in the seeds in the initial period of time, photosynthesis is not needed during this period. The decomposition and transformation of nutrients are biochemical reactions that must involve water, so water is necessary for germination.

5. Will lack of sunlight affect reproduction?

I have seen people raising hundreds of stone turtles indoors. They can lay eggs and produce baby turtles even without being exposed to the sun!