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76 results about "Cryptocaryon" patented technology

Cryptocaryon irritans is a species of ciliates that parasitizes marine fish, causing marine white spot disease or marine ich (pronounced ik). It is one of the most common causes of disease in marine aquaria.

Prevention and control method for cryptocaryon irritans of scatophagus argus

The invention discloses a prevention and control method for cryptocaryon irritans of scatophagus argus. According to physiological and ecological features of the scatophagus argus, the purpose of preventing and controlling the cryptocaryon irritans of the scatophagus argus is met with a combined method of nutrient enrichment cultivation and disease prevention of the scatophagus argus, drug therapy of the cryptocaryon irritans and ecological regulation, wherein therapeutic drugs are copper acetate and zeolite powder combined with copper acetate, furacilin antibiotics or an algae-inhibitory compound and furacilin antibiotics combined with the algae-inhibitory compound. The survival rate of the young scatophagus argus intensively cultivated with the method is greatly increased and reaches more than 95%; the fry survival rate of the diseased scatophagus argus is increased from 0% to 64-88%, so that the economical loss is greatly reduced. The method is remarkable and stable in effect and easy to master, popularize and apply, has the characteristics of economy, good actual effect, low toxicity, easiness for operation and the like, and has an important actual effect for establishing a technical system for disease prevention and control of the scatophagus argus and promoting the development of the breeding industry of the scatophagus argus.
Owner:SOUTH CHINA SEA INST OF OCEANOLOGY - CHINESE ACAD OF SCI

Cyst inactivation method for controlling cryptocaryon irritans disease of fishes

The present invention discloses a cyst inactivation method for controlling the cryptocaryon irritans disease of fishes. Mainly through screening a cloth liner having a strong adhesion effect on cryptocaryon irritans cysts, laying the cloth liner to the water bottom of the fishes infected by the cryptocaryon irritans disease so as to enable trophozoites of the cryptocaryon irritans to be adhered on the cloth liner after falling off, and removing the cloth liner to remove the cryptocaryon irritans cysts, life history of the cryptocaryon irritans is cut off, and death of the fishes caused by repeated infection of the cryptocaryon irritans is reduced. According to the method, the cloth liner which is corrosion resisting and nontoxic and has a strong adhesion effect on the cysts is obtained through screening materials, plectorhinchus cinctus infected by the cryptocaryon irritans disease is treated by using the method of removing the cryptocaryon irritans cysts, and relative protection ratio can reach 98%. Drying treatment and heat treatment are carried out on the cysts, and the results show that the cysts can be 100% inactivated when the cysts are dried for 120 min, and the cysts can be 100% inactivated when the cysts are processed for 3 min at 43 DEG C or processed for 1 min at 48 DEG C.
Owner:SUN YAT SEN UNIV

Method and device for killing cryptocaryon irritans cysts through hydroxyl radicals

Provided are a method and device for killing cryptocaryon irritans cysts through hydroxyl radicals. The method is provided with a water storage tank, a couture pond, a high-frequency high-voltage power source, a modular oxygen activity fragment generator, an online oxygen activity fragment detector, a Venturi gas-liquid mixing and dissolving device, a liquid-liquid mixing and dissolving device, a TRO detector, a motor, an automatic rotary brush, a water pump, a valve, a gas pipeline and a liquid main pipeline. An air inlet of the modular oxygen activity fragment generator is externally connected with an oxygen source, and an oxygen activity fragment air outlet of the modular oxygen activity fragment generator is connected with the online oxygen activity fragment detector, and an air suction opening of the Venturi gas-liquid mixing and dissolving device in sequence. A water outlet of the water storage tank is connected with a water inlet of the water pump, a water outlet of the water pump is connected with a liquid inlet of the Venturi gas-liquid mixing and dissolving device, a liquid outlet of the Venturi gas-liquid mixing and dissolving device is connected with a liquid inlet of the liquid-liquid mixing and dissolving device, and a liquid outlet of the liquid-liquid mixing and dissolving device is connected with the TRO detector and a water inlet of the culture pond in sequence. The automatic rotary brush controlled by the motor is arranged in the middle of the culture pond, and a water outlet in the bottom of the culture pond is externally connected with sea water.
Owner:XIAMEN UNIV

Compound Chinese herbal medicine for treating marine fish cryptocaryon irritans disease

The invention relates to a compound Chinese herbal medicine for treating a marine fish cryptocaryon irritans disease. The compound Chinese herbal medicine is characterized by being prepared from, by weight, 35-45 parts of stone-like omphalia, 25-35 parts of fructus quisqualis, 15-25 parts of cortex meliae, 15-25 parts of fructus cnidii, 15-25 parts of semen torreyae, 25-35 parts of Japanese flowering fern rhizomes, 25-35 parts of radix stemonae, 25-35 parts of pericarpium granati and 5-10 parts of cortex magnoliae officinalis. According to the traditional Chinese medicine composition for treating the marine fish cryptocaryon irritans disease, in the formula, stone-like omphalia, semen torreyae, fructus quisqualis, cortex meliae, fructus cnidii, Japanese flowering fern rhizomes, radix stemonae and radix stemonae for disinfestation serve as monarch drugs, cortex magnoliae officinalis serves as an assistant drug to remove dampness and disperse fullness, fructus aurantii immaturus regulates the intestines and stomach to disperse accumulation and stagnation, all materials are combined for use, the effects of disinfestation, dampness removing, fullness dispersing, accumulation dispersing and the like are achieved, and the compound Chinese herbal medicine is good in curative effect, free of public hazard and residue, convenient to use and especially suitable for factory marine fish breeding.
Owner:DINGZHENG ANIMAL PHARMA TIANJIN

Breeding method of pseudosciaena crocea resisting cryptocaryon irritans based on whole genome selection

ActiveCN112273291ASolve the problem that the parents cannot carry out the resistance testSolve the problem that the resistance test cannot be performedMicrobiological testing/measurementClimate change adaptationZooidAnimal science
The invention discloses a breeding method of pseudosciaena crocea resisting cryptocaryon irritans based on whole genome selection, and belongs to the field of animal disease resistance breeding. The method comprises the steps of establishing a reference group; performing resistance trait measurement on the reference group; establishing a breeding group; carrying out genotyping on the reference group and the breeding group; establishing an optimal whole genome selection model; estimating a genomic breeding value GEBV of the breeding group; selecting individuals, with the GEBV ranked in the front, of the breeding group as parent fishes according to a certain selection intensity, and propagating to generate a first filial generation resisting the cryptocaryon irritans; and conducting cryptocaryon irritans toxicity attack verification on the first filial generation with resistance. The insect resistance is obviously improved; and the estimation accuracy of the genomic breeding value of thebreeding group is improved, the breeding period is greatly shortened, high-resistance offspring can be obtained within one generation, the economic loss of the cryptocaryon irritans to the pseudosciaena crocea breeding industry is reduced, reference and basis are provided for disease-resistant breeding of other fishes, and the method has a wide application prospect.
Owner:XIAMEN UNIV

Method for controlling ichthyophthirius during trachinotus-ovatus cage culturing

The invention discloses a method for controlling ichthyophthirius during trachinotus-ovatus cage culturing. The method includes the steps of observing and preventing, making of a netting device for controlling the ichthyophthirius in the mode that the trachinotus ovatus is soaked with fresh water, fresh water soaking, medicine treating, physical enhancing and the like. According to the method, the trachinotus ovatus is soaked with fresh water, cryptocaryon irritans loses the adsorption capacity in fresh water through sudden changing of osmotic pressure and is separated from a fish body, and if soaking time is long, polypide cells can be ruptured and died; after the ichthyophthirius is infected to the fish body and developed and matured, the ichthyophthirius is separated from a host after 3 days to 5 days, a cyst is formed and is subjected to asexual reproduction to be split into a plurality of larvae capable of infecting the fish body; if a cage is moved to a deep sea area with the good water quality and the high flowing speed, the cyst can be separated from the host to be taken away by water flow, and the controlling effect is better achieved. By means of the method, it can be achieved that the trachinotus ovatus is soaked with fresh water in a sea cage for controlling the cryptocaryon irritans; meanwhile, trachinotus ovatus cannot be directly caught in the whole course, and stress responses caused by catching are reduced.
Owner:SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI +1

Method for controlling cryptocaryon irritans diseases of fishes by using ozone

The invention belongs to the field of fish disease prevention and control and in particular relates to a method for controlling cryptocaryon irritans diseases of fishes by using ozone. According to the method, by virtue of the characteristic that larvae of cryptocaryon irritans are centrally incubated at night, ozone is introduced into a breeding water body in a larva incubation period, and the ozone concentration is kept within a lowest concentration range which is capable of effectively deactivating the larvae of the cryptocaryon irritans; and by cutting off the life history of the cryptocaryon irritans, the purposes of treating and preventing the cryptocaryon irritans diseases can be achieved. By adopting the method, experiments that the larvae of the cryptocaryon irritans are treated with seawater of different ozone concentrations show that the lowest effective deactivation concentration is 0.1-0.15mg / L; and trachinotus ovatus is adopted for effect verification experiments, resultsshow that 411.4+14.7 cysts are generated by each fish on average when the ozone concentration is 0mg / L, 0.4+ / -0.1 cyst is generated by each fish on average when the ozone concentration is 0.1mg / L, and 0 cyst is generated by each fish on average when the ozone concentration is 0.15mg / L. Results show that when the ozone concentration is 0.1-0.15mg / L, the larva infection capability of the cryptocaryon irritans can be remarkably reduced (P is less than 0.05), and the cryptocaryon irritans diseases can be effectively controlled.
Owner:SUN YAT SEN UNIV

Exosome extraction and separation method of seawater parasitic ciliate cryptocaryon irritans and application

The invention discloses an exosome extraction and separation method of seawater parasitic ciliate cryptocaryon irritans, which comprises the following steps of: 1, collecting cysts of cryptocaryon irritans, cleaning the cysts, and incubating the cysts in sterile seawater containing antibiotics; 2, collecting the larvae in the infection period by using a sterile filter screen, and incubating and culturing the larvae in a culture medium containing antibiotics and exosome-free fetal calf serum; 3, centrifuging to remove larvae in an infection period, and collecting supernate; 4, sterilizing the supernate through a filter membrane, and concentrating the filtrate; 5, centrifuging the concentrated solution and collecting exosome coarse precipitate; 6, resuspending the exosome coarse precipitate by using sterile precooled PBS, and adding a protease inhibitor; and 7, centrifuging to remove supernate, and carrying out resuspension precipitation to obtain the exosome. According to the method, the exosome of cryptocaryon irritans can be effectively separated and extracted, the extracted exosome has a typical dish-shaped or saucer-shaped vesicle-shaped structure, the overall particle size meets the standard, and the extraction concentration of the exosome is high.
Owner:自然资源部第四海洋研究所
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