12 results about "Copepod" patented technology

The invention provides a digital twinborn monitoring, regulating and controlling method for a copepod bait biological domestication process. The method comprises the following steps: establishing a micro-ecology and population dynamics coupled twinborn model, and defining a monitoring parameter and control object unified term system; collecting multi-source sensing data at an edge end, and performing clock synchronization, signal denoising and state estimation to obtain a micro-ecology, group and water body state joint estimation result; executing parameter online identification based on state estimation, and constructing a safety constraint set of ammonia nitrogen, dissolved oxygen, death rate, environment change rate and the like; the breeding efficiency improvement and the system stability balance are realized through a multi-objective optimization function; and generating a micro-ecological pulse and environment gradual change cooperative control action set according to a solving result, and when a set condition is met, outputting a domestication prescription and terminating the process. Intelligent, low-stress and high-stability regulation and control of a copepod domestication process are realized through digital twin modeling, rolling predictive control and a self-evolution updating mechanism.

The invention provides a biological bait culture method for pond culture water. The biological bait culture method comprises the following steps: S1, building a three-dimensional culture system; s2, preparing an ecological base and a biocenosis; according to the method, by building a three-dimensional cultivation system of the bottom layer modular net cage, the water surface floating type three-dimensional cultivation frame and the intelligent regulation and control system and combining scientific configuration of ecological bases and biocenosis, the problem that bait supply is unstable in traditional cultivation is effectively solved; the light organism cultivation unit, the plant planting unit and the biological membrane carrier unit of the water surface floating type three-dimensional cultivation frame work in a layered mode, bait organisms such as chlorella, copepods and rotifers in different water layers are cultivated in a directional mode, a complete closed-loop food chain is constructed in addition to food filtering and nutrition supplementing of snails and freshwater mussels, and the bait yield per unit water body is greatly increased.

The invention provides a method for culturing Pseudosciaena crocea fries of the Halitium family through multi-stage dynamic bait density regulation and control, and belongs to the technical field of aquaculture. The culture method comprises the following steps: feeding 5-10 rotifers per mL at the age of 0-6 days; feeding 3-5 copepoda nauplii / mL and 0.5-1 artemia newly hatched larvae / mL at the age of 7-15 days; feeding 2-4 artemia nauplii / mL and 10-40% of compound feed at the age of 16-25 days, and gradually increasing the input proportion of the compound feed along with the age of days; 10%-80% of artemia and 20%-90% of compound feed are fed at the age of 26-35 days, and the input proportion of the compound feed is gradually increased along with the age of days; feeding mixed feed for 36-45 days old; photosynthetic bacteria and bacillus subtilis are put into the water body in the whole culture process. Through precise feeding and dynamic regulation and control, the survival rate, growth uniformity and feeding efficiency of the fries of the Pseudosciaena crocea of the sal family are effectively improved, and the quality of the fries is remarkably optimized.

To provide an active treatment agent for laver aquaculture containing oxalic acid dihydrate.SOLUTION: The present invention relates to an active treatment agent for laver aquaculture containing oxalic acid dihydrate, wherein a first active treatment agent containing oxalic acid dihydrate is superior in pitch removal capability, green laver removal capability, copepod removal capability, and cadmium removal capability, and, when mixed with a second active treatment agent that is activated chlorine dioxide aqueous solution, by confirming that harmful microorganisms belonging to the genus Pseudoalteromonas, which soften laver tissue, are markedly reduced, an active treatment agent for laver aquaculture that is environmentally friendly and excellent is provided.SELECTED DRAWING: Figure 1

The application relates to the technical field of zooplankton culture, and discloses a culture method of cladoceran zooplankton and application of a blue light source, which comprises inoculating cladoceran zooplankton in a culture water body and feeding microalgae to culture the cladoceran zooplankton until the cladoceran zooplankton reaches a harvestable density; and during the culture process, the culture water body is irradiated with a blue light source in a light-dark alternating mode. On the basis of conventional water quality management and microalgae feeding, the culture water body of the cladoceran zooplankton is irradiated in a light-dark alternating mode by using a blue light source with a specific wavelength, the internal reproduction mechanism of the cladoceran zooplankton is regulated and optimized through the irradiation stimulation of the specific narrow-waveband blue light source, the population density of the cladoceran zooplankton is effectively improved, and the culture yield and production efficiency of the cladoceran zooplankton are significantly improved.

The application provides an indoor breeding method of Plectropomus leopardus, which comprises the following steps: disinfecting an indoor cement pool, laying air bubble stones on the bottom of the cement pool, placing a screen gauze into the cement pool so that the screen gauze adheres to the wall of the cement pool, adding a lighting lamp, adding seawater, and putting Plectropomus leopardus larvae into the cement pool; after the larvae are put into the cement pool, adjusting the water flow speed, feeding fresh and live copepods, and pulling the screen gauze up and down during feeding; stopping feeding the copepods, feeding the compound feed, adjusting the water flow speed, and pulling the screen gauze up and down during feeding; and meanwhile, illuminating 1-3 times per day. The screen gauze is additionally arranged in the indoor cement pool, the cement pool is divided into multiple parts, the feeding domestication and the light domestication are combined with the net pulling and the water flow speed adjusting, the Plectropomus leopardus has good adaptability to the indoor cement pool breeding environment, the growth performance of the Plectropomus leopardus is improved, the rapid growth of the Plectropomus leopardus is promoted, and the breeding cycle of the Plectropomus leopardus is effectively shortened.

The invention relates to a method for preparing a bacterial supernatant. The method comprises the following steps: culturing Pseudomonas environmental strain PF-11 cells; and recovering the supernatant. The invention also relates to a method of reducing the amount of biofilm on a surface, reducing adhesion of at least one organism on a surface, reducing small and large area contamination on a surface, comprising contacting the surface with a supernatant, a supernatant fraction, a modified supernatant or a modified supernatant fraction of Pseudomonas strain PF-11; or a composition comprising a supernatant, a supernatant fraction, an improved supernatant or an improved supernatant fraction of the Pseudomonas strain PF-11, and one or more acceptable carriers. The invention also relates to a method of killing or reducing the growth of fungi or bacterial cells, or killing or inhibiting the development of insects or marine copepods, comprising contacting the fungi, bacteria, insects or marine copepods with a supernatant, a supernatant fraction, an improved supernatant or an improved supernatant fraction of a Pseudomonas strain PF-11 culture; or a composition comprising a supernatant, a supernatant fraction, an improved supernatant or an improved supernatant fraction of a Pseudomonas strain PF-11 culture, and one or more acceptable carriers. The invention also relates to a substantially pure culture of the Pseudomonas strain PF-11. The invention also relates to a culture enriched in the Pseudomonas strain PF-11. The invention also relates to a method of identifying whether a bacterium is capable of producing one or more extracellular proteases capable of digesting high molecular weight substrates.

The present application provides a kind of digital twin monitoring and control method for domestication process of copepods bait organism, the method comprises: establishing micro-ecological, population dynamics coupled twin model, define monitoring parameter and control object uniform terminology system;Multi-source sensing data is collected in edge, clock synchronization, signal denoising and state estimation are carried out, and the joint estimation result of micro-ecological, population and water body state is obtained;Parameter online identification is executed based on state estimation, and safety constraint set such as ammonia nitrogen, dissolved oxygen, mortality and environmental change rate is constructed;The balance of reproduction efficiency improvement and system stability is realized by multi-objective optimization function;According to the solution result, the micro-ecological pulse, environmental gradual change cooperative control action set is generated, and when the set condition is satisfied, the domestication prescription is output and the process is terminated.Through digital twin modeling, rolling prediction control and self-evolution updating mechanism, intelligent, low stress and high stability control of copepod domestication process is realized.

This invention discloses a method for preparing and applying a low-chitin enzymatic hydrolysed cricket feed based on Trichoderma and copepod autolysins, belonging to the field of aquaculture technology. This invention employs a combined enzymatic hydrolysis method using Trichoderma activation and copepod autolysins, which not only significantly reduces the chitin content in the cricket feed (to below 1%), but also optimizes the nutritional composition of the feed by introducing marine functional proteins from copepods. This not only replaces fishmeal in feed but also contributes to the growth and health of aquatic animals.

The invention discloses a cultivation method for preventing skin diseases of hippocampus kelloggi larvae, and belongs to the technical field of aquaculture. The method comprises the following steps: a bait preparation step: mixing artemia nauplii and copepods to prepare composite bait; disease prevention and management: adding a zanthoxylum nitidum water extract into the water body; and a special bait feeding step: taking the compound bait as a unique bait source for feeding, and preventing skin diseases through a zanthoxylum nitidum aqueous extract during the feeding process. The method solves the technical bottlenecks of low survival rate, abnormal intestinal development, difficulty in domestication and bacterial infection of the hippocampus kelloggi larva in the mouth opening stage. Experiments show that the method can significantly improve the survival rate and growth performance of the hippocampus kelloggi larvae and improve the health state of the hippocampus kelloggi larvae. On one hand, by promoting intestinal development, the digestion and absorption functions and the immune level of the body are effectively improved; on the other hand, common diseases such as skin ulcer and tail rot caused by bacterial infection can be obviously prevented, and a reliable guarantee is provided for healthy breeding of the hippocampus kelloggi.

The invention belongs to the technical field of aquaculture, and discloses a method for large-scale cultivation of seahorse initial feed. The invention discloses a cultivation method of copepods. The invention provides a cultivation method of copepods (such as Pseudodartinia andersonii), which can be used for cultivating copepods such as Pseudodartinia andersonii on a large scale and realizing artificial cultivation and large-scale high-density cultivation of the copepods. Compared with a conventional culture mode, the culture method provided by the invention can meet long-term large-scale high-purity Pseudodartas andersonii supply, the growth rate of Pseudodartas andersonii is increased by 62.7% compared with that of conventional culture of Pseudodartas andersonii, a large amount of manpower and material resources are saved, a reliable initial feed source is provided for large-scale factory hippocampus culture, and the culture method is suitable for large-scale industrial hippocampus culture. And a foundation is laid for development of high-quality biological baits in the aquaculture industry.

The invention discloses a method for cultivating, catching, strengthening and disinfecting Hucho taimen, and belongs to the technical field of aquaculture. The method comprises the following steps: carrying out symbiotic low-cost cultivation of unicellular algae and substrong Hucho taimen in an outer pond through an intermittent fertilization strategy; a waterwheel aerator is used for forming directional water flow, and the copepods are mildly collected in a 120-mesh temporary storage net cage to achieve low-damage fishing; specially-made fermented feed is fed into the net cage for precise nutrition enhancement for three days, so that the ratio of DHA to EPA in the body reaches 4: 1; and finally, performing efficient disinfection under specific parameters. The method systematically solves the problems of high cost, large damage, uneven nutrition and large biological safety risk in the traditional process, can stably obtain high-quality live bait with the survival rate not lower than 85%, high nutritional value and no specific pathogen, and has remarkable industrial application value.