418 results about "Mariculture" patented technology

The invention provides a comprehensive and intelligent mariculture net cage management and control system. The system integrates a multi-parameter sensor module, an underwater robot module, an underwater camera module, a central control module, a data storage and analysis module, an early warning module, a remote communication module and an automatic execution module. By monitoring multiple environmental parameters such as water temperature, salinity, dissolved oxygen and the like in real time and utilizing the underwater robot and the underwater camera to carry out autonomous inspection and fish behavior observation, the system can accurately master the culture environment condition. The AI algorithm and the intelligent model are combined, the system dynamically adjusts the bait casting amount, the oxygenation frequency and the net cage position, and the breeding benefits are effectively improved. Meanwhile, the early warning module carries out graded early warning on risk events such as typhoon and diseases, and the breeding safety is ensured. The remote communication and visual human-computer interface further enhances the remote monitoring and management capability of the system.

The invention provides an ocean net cage unmanned ship intelligent inspection method based on multi-source data and environment perception, which comprises the following steps: collecting and preprocessing multi-source ocean environment data of an ocean net cage group area, and simultaneously obtaining net cage distribution information, net cage inspection task requirements and an initial state of each unmanned ship; predicting the number of unmanned ships by using an improved random forest model; adopting an improved genetic algorithm to generate a plurality of optimal inspection paths; intelligently distributing a plurality of optimal routing inspection paths to each unmanned ship, and performing routing inspection on each unmanned ship according to the distributed path; multi-source marine environment data collected by a fixed monitoring station deployed in a net cage group area and a sensor of the unmanned ship can be comprehensively utilized, unmanned ship inspection path pre-planning, intelligent task allocation and dynamic adjustment of the inspection process are achieved, and therefore the inspection efficiency is improved, inspection safety is guaranteed, resource allocation is optimized, and the cost is reduced. And the intelligent level of mariculture management is improved.

The invention discloses a gravity type submerging net cage parameter design optimization method, and relates to the field of mariculture equipment structure optimization, and the method comprises the steps: collecting the multi-period marine environment data of a target sea area, and constructing an environment load sequence with a time-varying characteristic; establishing a three-dimensional coupling finite element model, performing disturbance analysis on a plurality of structure control parameters, and identifying a key design parameter set based on a response sensitivity function; and constructing a multi-objective optimization model including floating and sinking time control, maximum stress minimization and attitude offset constraint, performing global optimization by adopting an adaptive genetic algorithm, obtaining an optimal parameter solution, substituting the optimal parameter solution into the simulation model for dynamic response verification, and if a response index is converged to a target interval, outputting the optimal parameter solution as final design configuration. According to the method, systematic optimization of structural parameters of the submerging and surfacing net cage can be achieved, the stability and safety of the submerging and surfacing net cage under complex sea conditions are improved, and the method has high engineering applicability.

The invention discloses a cultivation area prediction method based on an improved nested UNet neural network, and belongs to the field of mariculture area prediction methods. According to the method, data preprocessing is carried out on high-resolution third radar image data and high-resolution second optical image data, wave band synthesis and image fusion are carried out on the optical image data and the radar image data, and a data set is constructed. On the basis of applying a U2-Net neural network model main body structure, a model network structure of an RSU module is modified, channel attention mechanisms based on maximum pooling and average pooling are added inside and outside a residual U-shaped module structure, a U2-Net SEOUT model is constructed, and prediction of the area and distribution of a breeding area is realized. According to the method, the advantages of the optical image and the SAR image are comprehensively utilized, the network structure is modified, the number of network layers and complexity are increased, and the prediction precision of the raft cultivation area is improved.

The invention belongs to the technical field of mariculture, and particularly relates to a flexible deep sea truss aquaculture net cage which comprises a flexible net cage system, a stock bin barrel system is arranged in the middle of the flexible net cage system, and an overwater suspension corridor assembly is arranged between the top end of the flexible net cage system and the top end of the stock bin barrel system. An anchor cable system is arranged on the outer side of the circumference of the flexible net cage system. By designing the flexible net cage system, the weight of the culture net cage is increased by filling viscoplastic filling materials through the bottom annular thick supporting pipes and the stand columns, the gravity center of the net cage is reduced, and the safety of the culture net cage in the putting process and the stability in actual operation are improved; other supporting pipes, supporting pieces, stand columns in the stock bin barrel system and transverse annular supporting pipes are filled with seawater, net cage throwing is assisted, and balance weight is simple; due to the integral structural design, the net cage has seawater corrosion resistance, is firm in structure, can bear the impact of large waves and seawater, has certain water permeability and can keep the circulation of seawater.

The invention provides a salt-tolerant plant constructed wetland system for treating eutrophicated mariculture wastewater, which specifically comprises a lower filler formed by mineral materials, and a middle filler formed by modified zeolite, sodium alginate coated vermiculite, rice husk charcoal, oyster shell, coral sand and diatomite, the surface filler is composed of intertidal zone bottom mud, intertidal zone raw water, coastal saline-alkali soil and composite algae powder, and the three fillers are combined with salt-tolerant plant breeding, bow-shaped water flow optimization and layered collaborative design; the core problems of poor salt tolerance, low adsorption efficiency, easiness in blockage, high maintenance cost and the like of the traditional constructed wetland during treatment of the mariculture wastewater are systematically solved.

The invention relates to an oyster culture carbon popularity method, which is specifically applied to the field of mariculture, and aims to realize quantification and management of carbon popularity value by accurately calculating and predicting carbon fixed quantity in an oyster culture process, and obviously improve the accuracy of oyster growth prediction by adopting an improved Gompertz model and an LSTM neural network. Compared with a traditional method, the growth prediction error of the method is reduced by about 30%. Multi-dimensional environmental parameter monitoring and analysis including water temperature, salinity, pH value, dissolved oxygen and the like are introduced, and the influence of environmental factors on oyster growth is comprehensively evaluated. Therefore, the cultivation management is more accurate, and the survival rate and the growth speed of oysters are improved. Accurate calculation of the carbon fixation efficiency in different growth stages is realized through a dynamic stage model; experimental data show that the carbon fixing amount measured and calculated by the method is 20-30% higher than that measured and calculated by a traditional method; based on real-time data and a prediction model, the system can dynamically adjust a breeding strategy.

The invention relates to an underwater bait casting system for mariculture, which comprises a storage bin, a weighing system, a feeder, a bait mixing device, a hydraulic driving device and an underwater conveying device, the bait mixing device comprises a mixing bin and a stirring device, and a feeding port valve and a discharging port valve are arranged at an inlet and an outlet of the mixing bin; the output end of the hydraulic driving device is divided into two paths, one path is connected with the side wall of the mixing bin in the tangential direction, and the other path is connected with a lower discharging pipe of the mixing bin; the underwater conveying device is provided with a conveying pipe with a conveying pump, one end of the conveying pipe is communicated with the lower discharging pipe, the other end of the conveying pipe is communicated with a feeding pipe, and a plurality of feeding nozzles are arranged on the two sides of the feeding pipe. According to the underwater fish feeding device, bait is uniformly fed at a specific depth underwater, fishes can be prevented from gathering due to water surface ingestion, the balance of dissolved oxygen in a water body is favorably maintained, the water quality problem caused by dense fish schools is reduced, meanwhile, the competition pressure and stress reaction between the fishes are reduced, and a more natural and healthy growth environment is provided for the fishes.

The invention relates to the technical field of mariculture, and discloses mariculture equipment and an offshore wind power system.The mariculture equipment comprises a mounting frame, a net cage and a lifting assembly, a containing cavity is formed in the mounting frame, an opening is formed in the top of the mounting frame, the bottom of the mounting frame is suitable for being arranged in water, and the top of the mounting frame is exposed out of the water surface; one end of the lifting assembly is fixed to the mounting frame, the other end of the lifting assembly is connected with the net cage, and the lifting assembly has a first state for driving the top of the net cage to sink into the sea and a second state for driving the net cage to float out of the sea surface. The distance between the top of the net cage and the average sea level exceeds the maximum wave height, the impact of stormy waves on the net cage can be reduced, the net cage is prevented from being damaged, and after the typhoon is finished, the net cage is driven to restore the original position through the lifting assembly and lifted to the second state of floating out of the water surface through the lifting assembly so that the net cage can be maintained conveniently.

The invention discloses a method for preparing activated carbon from mariculture bottom mud doped with biomass and application. The preparation method of the activated carbon comprises the following steps: desalting the mariculture bottom mud to obtain low-salt bottom mud particles; uniformly mixing the low-salt sediment particles with biomass powder according to a ratio of 1: (3-5), and carrying out pyrolysis carbonization at 350-450 DEG C in a nitrogen atmosphere to obtain a pre-carbonized biomass material; and uniformly mixing the pre-carbonized biomass material and an activator according to a mass ratio of 1: (4-5), placing the mixture in a ball milling tank, carrying out mechanochemical ball milling, transferring the ball-milled mixture to a tubular furnace, and carrying out high-temperature activation at 800-1000 DEG C in a nitrogen atmosphere to obtain the activated carbon. The material has a hierarchical porous structure and a relatively high specific surface area, can adsorb and remove various pollutants, particularly has relatively high adsorption capacity for VOCs and CO2, can be produced in batches, is low in cost, wide in applicable temperature range and long in service life, and has a good application prospect.

The invention provides a transporting device for a plastic fishing raft and an operation method of the transporting device. The transporting device comprises a plastic fishing raft body. The rail assembly is fixedly installed on a walkway plate of the plastic fishing raft body through a rail fixing frame, the rail assembly comprises a cross rail and a linear rail which are installed in a crossed mode, and a positioning groove and a climbing block are arranged at the crossed position; the cargo carrying assembly comprises a conveying frame, a handrail and a cargo body, the cargo carrying assembly is movably installed on the rail assembly through a power assembly, the power assembly comprises driving motors symmetrically arranged at the front end and the rear end of the bottom of the conveying frame, and each driving motor drives wheels on a wheel shaft to rotate through a driving gear; the treads of the wheels are matched with the track contact surfaces, and the rims of the wheels are matched with the side edges of the track assembly. The mechanical level of mariculture operation is remarkably improved, and the problems that traditional manual carrying is low in efficiency and poor in safety are solved.

The invention discloses a marine streptomyces strain SHEa3, a compound derived from the marine streptomyces strain SHEa3 and application of the marine streptomyces strain SHEa3, the classification name of the marine streptomyces strain SHEa3 is Streptomyces sp, the preservation number of the marine streptomyces strain SHEa3 is GDMCC No: 66667, and the preservation date of the marine streptomyces strain SHEa3 is July 14, 2025. The invention also discloses a sesquiterpenoids compound streptaviol A derived from marine streptomyces and application of the sesquiterpenoids compound streptaviol A in preparation of drugs for preventing and treating vibrio diseases of mariculture animals. The invention further discloses application of the sesquiterpenoids, namely the sea threitol C, derived from the marine streptomyces in preparation of drugs for preventing and treating vibrio diseases of mariculture animals. The marine streptomyces source compound has efficient anti-vibrio activity, and the marine streptomyces source compound streptaviol A and the helithreitol C are used for preparing the medicine for preventing and treating vibrio diseases of mariculture animals, so that the side effect is low, and the activity is excellent.

The utility model relates to the technical field of mariculture, in particular to an independent lifting aquaculture net cage convenient to tow. An independent lifting aquaculture net cage convenient to tow comprises at least one aquaculture net cage module, each aquaculture net cage module comprises a buoyancy truss, at least two net cage frame bodies and a plurality of pile legs, and each buoyancy truss comprises a plurality of first buoyancy frame bodies and at least one second buoyancy frame body; the multiple first buoyancy frame bodies are connected end to end to define a closed structure with an inner space. And the second buoyancy frame body is connected between the two oppositely arranged first buoyancy frame bodies. According to the independent lifting culture net cage convenient to tow, the towing efficiency and the net cage installation efficiency at the designated position are effectively improved, the net cage frame body can independently ascend and descend, operation and maintenance operation are convenient, and the problems that in the prior art, the net cage towing efficiency is low, and the net cage installation efficiency is low are solved; and a certain part of cultured objects in the net cage cannot be independently operated.

The invention discloses a satellite remote sensing image mariculture identification method and system based on deep learning, and the method comprises the steps: obtaining an original satellite remote sensing image and annotation data, and carrying out the data preprocessing, and obtaining the preprocessed image slice data and mask annotation data; based on a UPerNet segmentation network, ConvNeXt is selected as an encoder, an SCSE attention mechanism is introduced, and a mariculture facility identification model is constructed; and based on a mariculture facility identification model, identifying the preprocessed image slice data and the mask labeling data to obtain a satellite remote sensing image mariculture facility identification result. According to the invention, the boundary of the aquaculture facility can be accurately positioned, and the identification accuracy of the mariculture facility is improved. The satellite remote sensing image mariculture identification method and system based on deep learning can be widely applied to the technical field of remote sensing image processing.

The invention relates to an electroflotation treatment device for mariculture tail water treatment. The electroflotation treatment device comprises an air flotation tank and a scum collecting mechanism, a sewage inlet is formed in the position, close to the bottom, of the outer wall of one side of the air flotation tank, a decontamination tank is formed in the side, close to the sewage inlet, in the air flotation tank, and the scum collecting mechanism is arranged on the side, away from the sewage inlet, of the decontamination tank. The scum collecting mechanism comprises a scum tank, a plurality of groups of scum scraping plates and a driving assembly I; the electroflotation treatment device is provided with a plate cleaning assembly, the plate cleaning assembly comprises a slag cleaning plate, a second driving assembly is arranged on one side of the slag cleaning plate, a moving assembly is connected to the second driving assembly, the moving assembly drives the second driving assembly and the slag cleaning plate to move in the direction of a slag scraping plate, and the driving assembly drives the slag cleaning plate to rotate to make contact with the surface of the slag scraping plate. And then along with the reverse movement of the moving assembly, the slag removing plate scrapes the surface of the slag scraping plate, so that the purpose of cleaning is achieved.

The invention relates to the technical field of mariculture detection, in particular to a net breakage leakage detection system for a mariculture net cage, and the system comprises a plurality of fixed underwater acoustic device units which are used for obtaining passive acoustic signals; the underwater detection robot is used for transmitting high-frequency sonar pulses and collecting reflection echo signals; the control unit is used for sending a driving instruction to the underwater detection robot and receiving a reflection echo signal and a passive acoustic signal; the signal processing unit is used for extracting time delay and frequency spectrum characteristics from the reflection echo signal and determining position information of a damaged noise source according to the passive acoustic signal; the analysis module is used for extracting a joint acoustic feature vector from the spectrum features through a convolutional neural network, generating a node feature vector representing acoustic association between the net cages through a graph neural network, fusing the joint acoustic feature vector and the node feature vector and then carrying out damage detection; and the position optimization unit is used for carrying out iterative optimization on the position information of the damage noise source and outputting a final net cage damage position.

The utility model discloses a liftable aquaculture net cage capable of rotating automatically, and relates to the technical field of mariculture. The problems that an existing culture net cage is single in function, and the functions of rotating the net to be dried and lifting the net to avoid disasters cannot be achieved at the same time are solved. The net cage comprises a cylindrical net cage body, two circular guide rail assemblies, two driving assemblies, four floating bodies and four walking trolleys, the two ends of the cylindrical net cage body are each sleeved with one circular guide rail assembly, and the two walking trolleys are symmetrically arranged on the outer side of each circular guide rail assembly. The walking trolleys rotate around the circular guide rail assembly through the driving assembly, and floating bodies are fixedly connected to the outer sides of the walking trolleys. The utility model is used for mariculture.

The invention discloses a magnetic recovery sunlight Fenton reactor and method for treating mariculture wastewater, and belongs to the field of wastewater treatment. A first partition plate is fixed in the sunlight Fenton reaction tank body, a first water outflow channel is arranged between the lower end of the first partition plate and the lower end of the sunlight Fenton reaction tank body, a plurality of telescopic rods are fixedly arranged in the sunlight Fenton reaction tank body, magnets are fixed to the upper ends of the telescopic rods in a threaded screwing mode, and magnetic photocatalyst powder is distributed on the upper surfaces of the magnets; the sedimentation tank body and the sunlight Fenton reaction tank body share one tank wall, a partition plate II is fixed in the sedimentation tank body, a water outflow channel II is arranged between the partition plate II and the lower end of the sedimentation tank body, and the upper part of the sedimentation tank body is fixedly communicated with a water outlet pipe; the water inlet barrel is communicated with a water inlet pipe through a water inlet pump; the water inlet pipe is communicated with the upper part of the left side wall of the sunlight Fenton reaction tank body. The reactor disclosed by the invention is small in occupied area, strong in high-salt impact resistance, capable of efficiently removing pollutants, stable in operation, rapid in photocatalyst recovery, free from secondary pollution and relatively low in cost.

The invention discloses a biological adhesion prevention nano-composite coating for a marine aquaculture netting and a coating process of the biological adhesion prevention nano-composite coating. The coating slurry is composed of a waterborne polyurethane dispersion, an antifouling functional filler and an auxiliary agent; the antifouling functional filler is nano microspheres formed by encapsulating capsaicin by using hydrogenated rosin as a wall material. The preparation method comprises the following steps: preparing the nano-microspheres through a specific process, and dispersing the nano-microspheres in water-based resin to obtain slurry; performing air low-temperature plasma pretreatment on the netting to improve the surface activity; and finally, coating the surface of the netting with the slurry and curing. The problems of dispersion and controllable slow release of natural hydrophobic antifouling components are solved through a nano packaging technology, and meanwhile, the ultrahigh adhesive force of the coating on a flexible hydrophobic base material is realized through a plasma interface activation technology. The two components have a synergistic effect, so that the coating has the outstanding advantages of environmental friendliness, long-acting antifouling property and firm adhesive force, and the technical bottlenecks that the traditional environment-friendly coating is easy to peel and short in service life are effectively overcome.

The invention discloses marinobacter hydrocarbonoclastici SN-1 and a culture method and application thereof, the marinobacter hydrocarbonoclastici SN-1 is marinobacter hydrocarbonoclastici SN-1, is preserved in China Center for Type Culture Collection on August 7, 2024, is located in Wuhan University, Wuhan, China, and has a preservation number of CCTCC NO: M 20241755, and the preservation number of the marinobacter hydrocarbonoclastici SN-1 is CCTCC NO: M 20241755. The invention also discloses application of the marinobacter hydrocarbonoides SN-1 or the microbial inoculum in degradation of ammonia nitrogen, nitrite nitrogen, nitrate nitrogen and / or active phosphate concentration in seawater. The seawater body is a mariculture water body, mariculture tail water or an offshore water body, the salinity of the seawater body is 10-40, and the inoculum size of the mariculture SN-1 is 2%. The marinobacter hydrocarbonoides SN-1 disclosed by the invention can remove ammonia nitrogen, nitrite nitrogen, nitrate nitrogen, total nitrogen, active phosphate and total phosphorus in a seawater water body in an aerobic environment with relatively high salinity, has no toxic effect on aquatic animals, and can be applied to improvement and ecological restoration of a seawater water environment.

The utility model relates to a marine organism comprehensive culture device for culturing plant biological bait by utilizing biogas slurry, and belongs to the field of mariculture. A liquid outlet of the biogas slurry storage area is communicated with the plant bait culture area through a biogas slurry main liquid outlet pipe, the plant bait culture area is connected with a plant bait water inlet pipe through a filter pump, a slag outlet of the biogas slurry storage area is communicated with the bottom slag treatment area through a slag discharge main pipe, and an inflation stone is arranged at the bottom of the bottom slag treatment area and connected with an inflation pipe. The biogas slurry storage area is higher than the bottom residue treatment area and the plant bait culture area, a residue outlet of the bottom residue treatment area is communicated with the comprehensive culture area through a bottom residue feeding pipe, the bottom residue treatment area and the plant bait culture area are higher than the comprehensive culture area, and the plant bait culture area is communicated with the comprehensive culture area through a total algae feeding pipe. The comprehensive breeding area is provided with an intertidal zone water changing gate, continuous use of biogas slurry can be achieved, biological diversity is achieved through space isolation of animals of different feeding habits, food competition is effectively avoided, and the stability of the whole breeding system is guaranteed.

The invention provides a marine ranch water environment bearing capacity assessment method, and belongs to the field of water environment assessment. According to the method, satellite remote sensing data, buoy monitoring data, breeding management data and weather forecast data are fused, a physical-ecological coupling dynamic model is established, the dynamic response of a hydrodynamic process and ecological variables is simulated, and an ELM-SVR combined model is adopted to calculate a water environment bearing capacity index. According to the method, the problems of data missing and low model precision in a traditional method are solved, and the accuracy of water environment bearing capacity evaluation is improved. Meanwhile, the breeding scale and mode can be adjusted according to the evaluation result, and continuous harmony of the environment and breeding is achieved. The method is beneficial to improving the economic benefits of the marine ranching and protecting the marine ecological environment, and has important practical value.

The utility model belongs to the field of new energy and environmental protection, and particularly relates to a fishing, light and sewage complementary marine aquaculture system. The fishery, light and sewage complementary marine culture system provided by the utility model comprises a photovoltaic power generation device, a marine culture pond and a marine culture tail water treatment device, wherein the marine culture tail water treatment device comprises a sedimentation tank, a hydrolysis acidification tank, a filter, an adsorption dephosphorization and denitrification bed, an optional catalytic electrolysis decolorization device and an optional sludge treatment device which are connected in sequence. When the fishery, light and sewage complementary marine aquaculture system is adopted to treat marine aquaculture wastewater, pollutants such as nitrogen and phosphorus in aquaculture tail water and chromaticity can be efficiently removed, up-to-standard discharge of effluent is achieved, space utilization of marine aquaculture is improved and investment and operation cost is reduced by introducing the photovoltaic power generation device, and the system is suitable for large-scale popularization and application. A solution which is economical and applicable and has a good treatment effect is provided for current marine aquaculture wastewater treatment.

The utility model relates to the technical field of net cages, and discloses a mariculture net cage convenient to clean, which comprises a net cage, a buoy is fixedly mounted on the surface of the net cage, a support plate is fixedly mounted in the net cage, and a driving motor is fixedly mounted at the top of the support plate. The output end of the driving motor rotationally penetrates through the supporting plate and extends to the bottom of the supporting plate, an output shaft is fixedly installed at the output end of the driving motor, an outer scraper is fixedly installed on the surface of the lower end of the output shaft, and an inner scraper is fixedly installed on the surface of the upper end of the output shaft. According to the shellfish net cage, due to the arrangement of the inner scraping plate and the outer scraping plate, the net cage can be cleaned conveniently, then shellfish is prevented from being attached to the net cage, circulation of water in the net cage is guaranteed, breeding is facilitated, due to the arrangement of the outer scraping plate, external fish schools can be driven conveniently, and the shellfish net cage is convenient to use. Therefore, fish schools in the net cage are prevented from being interfered or competing for nutrients, and the culture effect is improved.

The utility model discloses a mariculture tail water treatment system which comprises a pretreatment pond capable of treating mariculture tail water through a physical method, and further comprises a microorganism purification pond and an ecological base purification pond, and the pretreatment pond, the microorganism purification pond and the ecological base purification pond are sequentially communicated, a microorganism expanding culture bin which is used for culturing and domesticating and can be used for partially putting microorganisms is arranged in the microorganism purification pond, and aquatic plants are planted in the ecological base purification pond. The device has the advantages of low cost and good treatment effect.

The invention belongs to the technical field of water quality prediction, and particularly relates to a water quality dynamic prediction method and system in a marine ranch culture environment, and the method comprises the steps: collecting historical water quality time sequence data, and carrying out the standardization processing; decomposing the standardized water quality time sequence data into a trend component and a season / disturbance component, and performing multi-scale feature coding; based on the seasonal multi-scale features, dynamically adjusting the frequency domain resolution through fractional Fourier transform, and obtaining time domain enhancement features after inverse transformation in combination with multi-head self-attention; based on trend multi-scale features, calculating a Pearson correlation matrix to form a mask matrix, and calculating output channel frequency domain enhancement features in combination with a mask attention mechanism; utilizing a global time sequence attention mechanism to obtain a globally enhanced trunk feature; and performing dynamic gating fusion on the three paths of features to obtain a fused spatial-temporal feature, inputting the fused spatial-temporal feature into a prediction head, and outputting a future value of the water quality time sequence data.

The invention discloses a noise measurement and processing system and method, and relates to the technical field of noise measurement, the noise measurement and processing system comprises a noise data measurement module, a marine environment measurement module and a data acquisition and analysis module, the noise data measurement module is used for measuring noise data of a mariculture platform; the marine environment measurement module is used for measuring marine environment parameters; the data acquisition and analysis module is in communication connection with the noise data measurement module and the marine environment measurement module, and is used for acquiring noise data and marine environment parameters and obtaining arrangement point locations and measurement conditions of the noise data measurement module based on the marine environment parameters; and performing noise processing and analysis on the noise data. According to the method, the proper noise measurement point is obtained by collecting the marine environment parameters, various noise data are collected at the noise measurement point, noise analysis is carried out, and the accuracy of noise measurement and analysis of the mariculture platform is improved.

The invention discloses a composite inducer for promoting adhesion and metamorphosis of marine bivalve mollusk larvae and an application method of the composite inducer. The composite inducer for promoting adhesion and metamorphosis of the marine bivalve mollusk larvae comprises glutamine, glutamic acid, potassium chloride, calcium chloride and taurine, and the concentration ratio of the glutamine to the glutamic acid to the potassium chloride to the calcium chloride to the taurine is 1: 1: 2 * 10: 1.7 * 10: 4. According to the application, glutamine, potassium ions, calcium ions, glutamic acid and taurine are matched, the application effect of the glutamine, the potassium ions, the calcium ions, the glutamic acid and the taurine in the aspect of improving the attachment and metamorphosis rate of the shellfish larvae is defined, the technical blank of multi-component cooperative regulation and control of the attachment and metamorphosis of the shellfish at present is filled, a new solution is provided for bivalve shellfish fry production, and the application prospect is wide. The method is of great significance in promoting healthy development of the mariculture industry.

The invention relates to the technical field of biological medicines, and particularly discloses mRNA based on a fish nervous necrosis virus CP protein gene, a vaccine and a preparation method and application of the mRNA. The invention provides mRNA (messenger Ribonucleic Acid) of a fish nervous necrosis virus, which has a nucleotide sequence as shown in SEQ ID NO: 1 and structurally comprises a 5'end untranslated region, a signal peptide sequence, an NNV (Neuronecrosis Virus) antigen coding region, a 3 'end untranslated region and polyA. The mRNA vaccine contains an ORF sequence of a capsid protein CP gene capable of resisting NNV virus infection. Animal safety test results of the fish nervous necrosis virus mRNA vaccine prepared by the invention show that the vaccine is safe, effective and convenient and simple in clinical use, and has a wide application prospect in the aspect of prevention and control of viral nervous necrosis of mariculture fishes.

The invention belongs to the technical field of mariculture, and particularly relates to a fish feed spraying unmanned aerial vehicle based on mariculture. The material storage barrel is fixedly mounted on the machine body; the material mixing mechanism is arranged at the bottom of the material storage barrel and is used for intermittently feeding and mixing materials; and the discharging mechanism is arranged below the material mixing mechanism and is used for intermittently discharging materials and increasing the spraying area. Fish feed can be separately fed or mixed through the mixing mechanism, the fish feed spraying convenience is improved, meanwhile, a second sieve plate circularly rotates for intermittent feeding, an auger assembly can conveniently and uniformly stir and mix the fish feed, the fish feed can be scattered and blown away under the driving of the mixing mechanism through a discharging mechanism, and the fish feed spraying efficiency is improved. Meanwhile, the rotating shaft further drives the rotating disc to rotate, intermittent feeding is achieved, and the fish feed can be more evenly dispersed in a feeding sea area.