CATDOLL : CATDOLL: What are the dangers of red sea bream iridovirus disease?

1. What are the hazards of red sea bream iridovirus disease?

Answer: As an emerging infectious disease of marine farmed fish, red sea bream iridovirus disease has caused serious damage not only to Japanese marine farmed fish in recent years, but also to Thai farmed grouper and Korean farmed striped sea bream and red sea bream. Disease damage Red sea bream iridovirus disease was first confirmed in Japan in 1990 and was found in farmed red sea bream in Shikoku. But by 1995, it had been widely found in 17 prefectures in Japan, including red sea bream, five-lined lionfish, high-body lionfish, and striped mullet, etc., and 20 species of farmed fish in three orders, and by 2000, the number of endangered fish species had expanded to 31 species in three orders, including 28 species of Perciformes, 2 species of Flatfish, and 1 species of Ocelliformes. Red sea bream iridovirus disease harms both juveniles and half-grown and adult fish. In comparison, it is particularly harmful to 0-year-old juveniles. The disease often causes a mortality rate of 20%-60% in farmed red sea bream, striped sea bream, five-lined lionfish and other fish. Iridovirus disease in various farmed fish species is often complicated by bacterial and parasitic diseases. In Japan, iridovirus disease in redfin sea bream is often complicated by vibriosis, Okamoto's fluke disease, Neobenedeniasis, shield filament disease, and trichodinasis.

2. How to disinfect a pond infected with iris virus?

Remove shrimp infected with iris virus promptly to prevent further spread and transmission of the virus.

Thoroughly disinfect the pond. You can use effective disinfectants, such as hydrogen peroxide, potassium permanganate, etc. During the disinfection process, you need to ensure that the concentration and use time of the disinfectant meet the requirements to kill viruses and bacteria.

3. Can turtle iris virus infect shrimp?

The turtle iris virus will not infect shrimps because they belong to two different species. This virus only spreads in the body of the turtle and is harmless to shrimps, so it will not be transmitted to shrimps.

4. How to deal with shrimp ponds with iridovirus?

Strictly manage water quality: keep the water clean, maintain sufficient dissolved oxygen and suitable temperature to ensure the health and immunity of shrimp.

2.

Control the density of shrimp ponds: avoid overcrowding in shrimp ponds to reduce shrimp contact, reduce shrimp wear and infection opportunities.

3.

Improve feed quality: Choose high-quality feed, avoid overfeeding, and reduce residual bait in the pond.

4.

Regular virus testing: Regularly test the virus status of shrimps in the pond, detect virus infection in time, and take corresponding prevention and control measures.

5. Can bleach kill iris virus?

cannot.

Bleaching powder is widely used as a disinfectant in my country's food industry. It is cheap, has strong bactericidal power and good disinfection effect. For example, it is used to disinfect drinking water and fruits and vegetables. It is also often used to disinfect facilities and items such as swimming pools, bathrooms, and furniture. In addition, it is also often used to bleach foods such as grease, starch, and peels. It can also be used for deodorization and decolorization of wastewater. In food production, it is generally used to disinfect oil-free and equipment. Such as operating tables, walls, floors, cooling pools, transport vehicles, work rubber shoes, etc.

6. What animal doesn’t look like a fish but is a fish?

The lancelet is known as the least fish-like fish.

Amphioxus, also known as Bai's lancelet, slug fish, double-pointed fish or sea hair, is a precious marine animal. Due to its extremely special morphological structure, it has the characteristics of both invertebrates and vertebrates. It is a typical representative of the transitional type from invertebrates to vertebrates. Therefore, it is highly valued by the biological community at home and abroad.

The appearance of lancelet is very strange and interesting. It has a very small body, flattened on the left and right sides, pointed and thin ends, and a spindle-shaped body. It is generally only 4 to 5 cm long.

7. What type of fish is tilapia?

Tilapia - native to Africa, it is a tropical fish. The genus Tilapia includes more than 100 species, including subspecies. Tilapia has the characteristics of fast growth, high yield, omnivorous diet, few diseases and strong reproductive capacity.

8. What are the characteristics of fish?

The shape, body temperature, bones and skin of fish are different from those of other animals. In addition, fish have an organ that other animals do not have - the swim bladder. The existence of the swim bladder is also the reason why fish can float in the water.

1. Shape

Fish have a variety of shapes, sometimes quite different, but in general most fish are elongated and streamlined. Generally speaking, fish that swim fast in the water have elongated bodies, while fish that swim slowly or live at the bottom of the water are relatively flat. But some fish have very strange shapes, such as seahorses. The smallest fish is less than 1 cm, and the largest fish (whale shark) can reach 18 meters.

2. Body temperature.

Fish are cold-blooded animals. The body temperature of some tunas and sharks (especially sharks of the family Carcharhinidae) is higher than the temperature of the surrounding environment. Bluefin tuna is the only warm-blooded fish.

3. Bones

The skeleton of a fish is made of cartilage (cartilaginous fish) or bone (bony fish). There are four to seven gills on both sides of the skull, of which the front one has evolved into the zygomatic bone. The spine of a fish is connected to the skull, the ribs in the chest are connected to the spine, and there are long spines extending from the spine on the back, tail and abdomen.

4. Skin

Fish have two layers of skin: the outer layer contains glands that secrete mucus, and the inner layer contains many connective tissues, scales and pigment cells. The outer layer of mucus helps fish reduce drag when swimming. Cartilaginous fish do not have mucus, but the tiny, tooth-like protrusions on their skin have a similar function.

5. Fish bladder

The swim bladder is an inflatable sac-like organ in the fish's body. Its main function is not breathing. Fish rely on the swim bladder to adjust their specific gravity. Fish can use the swim bladder to slowly rise or descend without moving. Most bony fish have a swim bladder, an organ for regulating buoyancy.

9. Cold-resistant fish?

All fish species in northern China are cold-resistant, such as the common carp, crucian carp, silver carp, bighead carp, grass carp, black carp, sturgeon, black carp, loach, yarrow, schizothorax and so on.

10. Marine fish?

A: There are many kinds of marine fish. Common ones include shark, yellow croaker, horseface fish, eel, ox tongue fish, Spanish mackerel, snapper, silver pomfret, turbot, hairtail, etc. These fish contain a lot of vitamins, collagen and unsaturated fatty acids, which are good for the body. Not only can they supplement nutrition, but they can also improve skin quality, and they are low in fat and will not make you fat.