CATDOLL : CATDOLL: Can loaches tolerate low oxygen? Can loaches tolerate low oxygen?

1. Can loaches tolerate low oxygen? Can loaches tolerate low oxygen?

Although loach has the characteristics of tolerance to low oxygen, high reproduction rate, strong adaptability and strong disease resistance.

However, a variety of diseases will still occur during pond farming, and the main reasons are poor water quality, improper management, excessive stocking density, etc. Farmers need to pay attention to related issues. If they want to expand the scale of farming and ensure farming benefits, farmers need to strengthen the prevention and control of common diseases.

2. What are the measures for hypoxia in coal mines?

Hypoxia control measures:

1. Ventilation area: Anemometers and gas inspectors should promptly measure the air volume and gas concentration of the working surface. Strengthen the management of the ventilation system, ensure that the ventilation facilities are intact and reliable, and strengthen daily wind measurement work. Full-time gas inspectors found that the O2 concentration was low...

2. The comprehensive mining team is responsible for the maintenance and use management of the wind shield curtains on the working face to ensure that the wind shield curtains are tight and reliable.

3. The monitoring dispatcher in the mine dispatch room is responsible for monitoring the condition of the ventilation facilities of the working face and tracking the low-oxygen areas during each shift. If any problems are found, they shall promptly notify the relevant mine leaders, ventilation area and related departments.

4. The safety supervision station is responsible for supervising the support of the working face and the two safety exits.

3. Hypoxia effect?

Oxygen effect

The significant effect of oxygen on the radiosensitivity of organisms is called the oxygen effect. Shortly after Roentgen discovered X-rays, he observed that compressing the skin and blocking blood flow could reduce the inflammatory response of the skin to X-rays. This is the earliest example of artificially controlling the effects of radiation. This phenomenon can be seen from bacteria to higher organisms. Basic experiments have shown that when cells are exposed to low-LET radiation in a low-oxygen environment, the radiosensitivity of cells will be significantly reduced. The radiosensitivity of cells in the presence of oxygen is three times that in the absence of oxygen. Oxygen is the strongest known radiosensitizer.

Low-LET rays, such as X-rays and gamma rays, are mainly damaged by indirect effects. The reaction between free radicals produced in cells and body substances is affected by oxygen. However, for high-LET radiation (fast neutrons, alpha rays, protons), the oxygen effect is not significant because high-LET rays are mainly direct.

In fact, oxygen is a substance that catalyzes human aging. When the amount in the air reaches a certain level, it will cause oxygen poisoning. Oxygen is also one of the culprits that causes mitochondrial mutations in cells.

4. What are the low-oxygen fish?

There are many freshwater fish that are low in oxygen, such as carp, crucian carp, bighead carp, black carp, etc. Among them, carp is a very common ornamental fish with strong adaptability. It will enter deep water during low temperature seasons.

Crucian carp is an omnivorous fish that can survive in an environment of 4-32℃ and is resistant to low oxygen. Bighead carp is one of the four major carps and is a filter-feeding fish. Black carp is a more ferocious carnivorous fish that can breathe on the water surface.

5. What is low oxygen potential?

Refers to the relative chemical potential of oxygen in the equilibrium system. The oxygen partial pressure pO2 when the metal oxidation reaction reaches equilibrium is called the decomposition pressure of the compound MexOy. The lower the oxygen potential value, the more stable the metal oxide MexOy is. Its relationship with the oxygen potential (ΔG°) of the oxidation reaction is:

ΔG°=RT ln pO2

Where R is the gas constant and T is the absolute temperature.

6. Animals that can tolerate low oxygen?

Water bears can survive in a vacuum, not to mention low oxygen

7. What is the definition of low pressure and low oxygen?

A low-pressure, low-oxygen environment refers to an environment with low air pressure and low oxygen concentration. For example, the plateau is a typical low-pressure, low-oxygen environment.

Currently, artificial low-pressure and low-oxygen environments can be created through vacuum pumps and decompression chambers. (2) Normal-pressure and low-oxygen environments Normal-pressure and low-oxygen environments mainly use molecular membranes or molecular sieve technology to "filter" oxygen molecules in the air to form low-oxygen air, but the air pressure does not change. Since this technology does not involve changes in air pressure, ordinary rooms only need to be simply sealed to conduct low-oxygen training research and application.

8. What are the characteristics of hypoxic training?

1. Strengthen the heart and lungs: In the initial stage, the heart rate can be accelerated. Chronic hypoxia exposure can reduce the heart rate, improve the heart's contractility and diastolic function, and reduce blood pressure; effectively increase the maximum oxygen uptake, improve lung ventilation and vital capacity; and enhance the cardiopulmonary system's ability to transport oxygen.

2. Accelerate fat burning: increase basal metabolic rate, promote the metabolism of fat and protein, increase energy consumption; reduce appetite.

3. Improve function: enhance muscle strength, stimulate the proliferation of muscle cell capillaries and mitochondria, and activate oxidase activity.

4. Physical training: Hypoxia makes the oxygen transport system more efficient, which can increase muscle strength and endurance by up to 40% and shorten effective training time by up to 50%.

5. Optimize blood: promote the synthesis and release of EPO, increase RBC (red blood cell) count, Hct (hematocrit), that is, the amount of HbO; promote the synthesis and release of human growth hormone.

6. Enhance immunity: In Europe, hypoxic training is often used as an effective means to improve the function of the human immune system when treating cardiopulmonary diseases, cardiovascular diseases or other difficult medical conditions.

9. Can grass carp tolerate low oxygen?

Grass carp cannot tolerate low oxygen and requires a water environment with good water quality and high dissolved oxygen content. It is active when the dissolved oxygen content is 5 mg/L, stops feeding when it is lower than 2 mg/L, and will "float" until death when it is lower than 1.5 mg/L. Grass carp likes to live in slightly alkaline waters and usually lays eggs in May and June when the water temperature is above 20℃.

Grass carp is a large economic fish with a voracious appetite and fast growth. In the fry stage, it mainly feeds on zooplankton, and then gradually turns to aquatic and dry grasses. It also eats commercial baits mainly made of plant materials, and sometimes swallows some small insects such as cockroaches and grasshoppers that fall into the water.

10. How to create a low oxygen environment?

A hypoxic environment was created using a three-gas incubator filled with nitrogen until the oxygen concentration dropped to 1%.