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Coin fungus disease in shrimp ponds is a painful problem for shrimp farmers, causing heavy economic losses if not detected and treated promptly. This article Dong A will provide you with detailed information about coin fungus disease, including causes, symptoms, harmful effects and effective treatment.

What is coin fungus disease in shrimp ponds?

Coin fungus, also known as dog’s foot fungus, is a type of lichen (symbiosis between fungi and algae) commonly found in shrimp ponds, especially shrimp ponds lined with canvas. This fungus has a shape like scales, twigs or tufts of fibers, the color can be green, white, yellow or brown depending on the type of symbiotic algae. Coin mushrooms have a strong fishy smell, affecting shrimp health and causing damage to farmers.

Coin fungus disease is common in shrimp ponds

Common harmful effects of coin fungus disease in shrimp ponds

Coin fungus can cause serious harm to farmed shrimp, affecting shrimp productivity and quality, even leading to failure of the entire crop. Below are the main harmful effects of coin fungus disease when it appears in shrimp ponds:

• Causes disease in shrimp: Coin fungus secretes toxins that harm the shrimp’s digestive system, making shrimp susceptible to intestinal diseases, liver atrophy, body shedding, loose intestines, white feces, and even mass death. Coin mushrooms have a fishy smell, causing shrimp to become irritated, stop eating, become weak, grow slowly and be susceptible to other diseases.
• Affects pond water quality: The strong growth of coin fungus will consume oxygen in the water, affecting the respiratory process of shrimp. At the same time, coin mushrooms decompose leftover food and dead shrimp carcasses, creating toxic gases such as H2S and NH3, polluting the water environment and affecting other organisms in the pond.
• Impact on output and economic profits: If not controlled promptly, coin fungus can lead to mass shrimp deaths, causing heavy damage. Not only that, when shrimp are infected with coin fungus, their growth will be slow and stunted, affecting harvest productivity. At the same time, due to the need to use many chemicals to prevent and treat diseases, production costs will increase, affecting farmers’ profits.

Coin fungus is a threat to the health of farmed shrimp

In addition, coin mushrooms can also clog the water fan system, affecting the oxygen supply process for shrimp. Creates conditions for parasites and harmful bacteria to grow. Therefore, shrimp farmers need to know why copper fungus appears so that they can promptly handle it.

Causes of coin fungus disease in shrimp ponds

Coin fungus, also known as dog’s foot fungus, often appears in shrimp ponds, causing serious effects on shrimp health. To have effective prevention and treatment measures, it is extremely important to understand the causes of coin fungus disease. Below are the main causes of coin fungus disease in shrimp ponds that are most commonly seen:

The water environment in shrimp ponds is polluted:

• Due to excess food, waste from shrimp and other organisms in the pond creates a favorable environment for coin fungus to grow.
• Low dissolved oxygen concentration leads to accumulation of toxic gases such as NH3, NO2-, H2S, CH4,… inhibiting the growth of beneficial bacteria, creating conditions for coin fungus to appear.
• Pond water with unstable pH, salinity changes erratically, shrimp ponds infected with harmful bacteria or parasites, and protozoa that cause disease in shrimp are also favorable factors for copper fungi. pre-development.

Unscientific pond management and shrimp care:

• Excess feeding of shrimp, food not suitable for the shrimp’s development stage leads to excess food, creating an environment for coin fungus to appear.
• Not cleaning the pond periodically and not using biological products to treat shrimp pond water leads to the rapid growth of coin fungus.
• Improper use of chemicals and overuse of chemicals in shrimp ponds can destroy beneficial bacteria, creating conditions for coin fungus to grow.

What causes coin fungus disease in shrimp ponds?

In addition, some other factors can also contribute to coin fungus disease such as:

• High shrimp stocking density leads to competition for food and oxygen, creating a stressful environment for shrimp, making them susceptible to disease.
• Poor quality breeds that carry pathogens can also be a source of spreading coin fungus disease in ponds.

Understanding the cause of coin fungus disease is the first step to having effective prevention and treatment measures. Farmers need to focus on improving the pond environment, managing food and water environment properly, using chemicals properly, and choosing healthy breeds to minimize the occurrence of fungal diseases. money in shrimp ponds.

Characteristic signs of coin fungus disease in shrimp ponds

To detect coin fungus disease early and take timely treatment measures, people need to pay attention to some common signs as follows:

• Coin mushrooms often stick to the bottom of ponds, pond canvas, pond walls, pond tools,… shaped like brown, yellow, green disks, ranging in size from 1-5cm.
• Gerbera mushrooms have a strong, unpleasant smell, affecting pond water quality and shrimp health.
• Shrimp infected with coin fungus disease often have symptoms such as: loss of appetite, slow growth, weakness, thin shell, easy molting, white feces, loose intestines,…
• Coin fungus parasitizes the skin, gills, and shells of shrimp, causing damage and creating conditions for bacteria and fungal diseases to attack.

With the above knowledge, surely everyone has a better understanding of the signs of coin fungus disease in shrimp ponds. Therefore, shrimp farmers need to regularly observe ponds and shrimp to detect diseases early and come up with timely treatment methods to avoid causing major impacts.

It is necessary to observe to see if the shrimp shows signs of coin fungus disease

How to treat gerbera mushrooms in ponds quickly and effectively

Gerbera mushrooms grow strongly in polluted water environments, lack of oxygen, high density and excess food. Therefore, effective prevention and treatment of money fungus is extremely important to ensure productivity and profits for shrimp farmers.

Measures to prevent coin fungus when raising shrimp

To minimize the appearance of coin fungus in shrimp ponds, farmers need to take the following preventive measures:

• Choose healthy seed: Choose to buy seed from a reputable facility, ensuring the shrimp does not carry coin fungus disease.
• Treat the pond thoroughly: Clean and disinfect the pond with lime powder before stocking, eliminating potential harmful agents.
• Ensuring pond water quality: Maintain good pond water quality by using microorganisms, biological products, checking and adjusting water environment factors such as pH, salinity, dissolved oxygen,… frequent.
• Provide reasonable nutrition: Feed shrimp high quality, nutritious food, and supplement to enhance shrimp resistance.
• Reasonable shrimp stocking density: Do not stock shrimp at too high a density to limit water pollution.
• Monitor shrimp health: Regularly observe shrimp to detect early signs of coin fungus disease and take timely treatment and treatment measures.

Renovating ponds to prevent coin fungus disease in shrimp

Detailed measures to treat coin fungus in shrimp ponds

When detecting coin fungus appearing in a shrimp pond, the following treatment measures should be quickly implemented:

• Increase aeration: Use water fans or aerators to increase dissolved oxygen in the pond, inhibiting the growth of fungi.
• Improve water quality: Add lime powder to increase water alkalinity, and use biological products to treat algae and organic matter in the pond. Adjust environmental factors of shrimp pond water such as: pH, salinity, dissolved oxygen,… appropriately to inhibit the growth of coin fungus.
• Using chemicals: Use fungicide chemicals such as formalin, copper sulfate, or potassium permanganate according to the manufacturer’s instructions.
• Combine probiotics: Use probiotics to balance the microflora in pond water, limit the growth of fungi and other harmful agents.
• Supplement vitamin C: Add vitamin C to food or pond water to increase shrimp resistance.

In addition, part of the pond water can be replaced with clean water if the pollution is severe. At the same time, closely monitor the health status of shrimp and adjust appropriate treatment measures.

Coin fungus is a dangerous disease in the shrimp farming industry, but it can be prevented and treated effectively if appropriate measures are applied. Complying with scientific and methodical measures to prevent and treat money fungus will contribute to improving productivity and quality of shrimp farming.

Important notes when treating coin fungus disease in shrimp farming

In addition to the prevention measures and treatments mentioned above, shrimp farmers need to note the following important points when facing coin fungus disease:

Pay attention before and during the treatment of coin fungus

To effectively treat coin fungus disease, it is first necessary to determine the cause to prepare appropriate methods and drugs and chemicals during the treatment process for shrimp.

Accurate diagnosis:

• Accurately diagnosing the cause of the disease is the first and most important step to effective treatment.
• Samples of sick shrimp should be collected and sent to the aquatic veterinary agency for testing and identifying the causative agent.
• Self-medication without accurate diagnosis can lead to drug resistance and make the disease worse.

Use chemicals properly:

• Fungicides can affect the health of shrimp and the pond environment if not used properly.
• Dosage, duration of use and manufacturer’s safety instructions should be followed.
• Priority should be given to using chemicals that are less toxic and highly biodegradable.
• Combine the use of chemicals with biological measures to increase treatment efficiency and limit negative impacts on the environment.

After treating coin fungus, you need to pay attention

In order for the disease to be treated completely and not to recur, people need to pay attention to the following factors after applying measures to treat coin fungus:

Monitor and adjust treatment measures:

• It is necessary to closely monitor the health situation of shrimp and pond water quality after applying treatment measures.
• Adjust dosage and time of chemical use or other measures if necessary.
• Persistently take preventive measures to limit the recurrence of the disease.

Strictly follow important notes when handling gerbera mushrooms in shrimp ponds

Consult an aquaculture engineer:

• When having difficulty diagnosing or treating coin fungus disease, shrimp farmers should consult with aquaculture experts or technicians.
• Experts can provide specific advice and guidance tailored to your particular pond situation.

Implement safety measures for shrimp farmers:

• When using fungicide chemicals, it is necessary to comply with labor safety measures such as wearing gloves, masks, and protective glasses.
• Avoid letting shrimp pond treatment chemicals come into direct contact with skin and eyes.
• Wash your hands thoroughly after using chemicals to avoid poisoning and affecting your health.
• Seriously store chemicals and biological products in a safe place and close the lid after use.

By following the above important notes, shrimp farmers can effectively handle coin fungus disease, protect their shrimp herds, and improve farming productivity. In addition to the above notes, shrimp farmers also need to pay attention to cleaning tools after use, destroying pathogens in the pond and surrounding environment to avoid spreading to the next farming crops.

Through the above article, readers have seen the great effects that coin fungus disease causes when raising shrimp. At the same time, we also share details about the causes, signs and effective treatments for coin fungus disease in shrimp ponds that people can refer to.

Nguyễn Lân Dũng

Giáo sưNguyễn Lân Dũnglà nhà khoa học hàng đầu Việt Nam trong lĩnh vực vi sinh vật học (wiki), với hơn nửa thế kỷ cống hiến cho giáo dục và nghiên cứu. Ông là con trai Nhà giáo Nhân dân Nguyễn Lân, thuộc gia đình nổi tiếng hiếu học. Giáo sư giữ nhiều vai trò quan trọng như Chủ tịch Hội các ngành Sinh học Việt Nam, Đại biểu Quốc hội và đã được phong tặng danh hiệu Nhà giáo Nhân dân năm 2010.