41 results about "Fish stock" patented technology

A method and system for fish identification based on body surface texture features and geometric features are provided. The method employs an improved Resnet network and a deep learning Yolov8 network to extract body surface texture features and geometric features of a fish on the basis of considering influences of fish tail swing and an oxygen concentration on a fish body form based on a small sample learning framework, and then realizes identity recognition of a fish individual by coupled analysis of the body surface texture features and the geometric features. The method can realize high-accuracy fish identification with few training samples of a fish to be identified from the perspective of actual application, provides theoretical basis and technical support for accurate fish stock assessment and accurate estimation of industrially farmed fish biomass, and meets the development requirements of modern agriculture.

The invention discloses a remote management method, device and equipment for fish and vegetable symbiosis based on digital twinning, and the method comprises the steps: obtaining the physical parameter data of a physical fish pond and a physical plant shed in a fish and vegetable symbiosis system, creating twin models corresponding to fish schools, fish ponds, hydroponic plants, plant sheds and physical equipment of the fish and vegetable symbiotic system based on the physical parameter data; acquiring fish school culture parameters and plant growth parameters acquired by a sensor and a camera deployed in the fish and vegetable symbiotic system in real time, and acquiring equipment operation parameters; analyzing according to the fish stock culture parameters, the plant growth parameters and the equipment operation parameters through a fish and vegetable symbiotic digital twinborn platform to obtain an analysis result; and triggering an early warning mechanism according to an analysis result, generating a regulation and control instruction, and dynamically adjusting the operation state of corresponding physical equipment in the fish and vegetable symbiotic system according to the regulation and control instruction, thereby realizing remote collaborative management. Remote management of the fish and vegetable symbiotic system can be realized, and the resource utilization rate and convenience are improved.

The invention discloses a canal river aquatic ecology influence evaluation system construction method and device, computer equipment and a readable storage medium, and the method comprises the steps: determining river obstruction through comprehensively considering river connectivity and a hub fishway fish passing effect, and determining river fragmentation degree according to river curvature and river self-cleaning capability of a bent section; river water ecological loss is determined based on benthic organism loss and biological loss caused by suspended solids, river aquatic ecological change is determined according to river biogenic factor change and fish population distribution change, and finally an evaluation system is constructed by combining river obstruction, river breakage degree, river water ecological loss and river aquatic ecological change. According to the design, various factors are comprehensively and systematically considered, and the influence of canal construction on river aquatic ecology can be accurately evaluated.

The invention relates to the field of marine organism ingestion, in particular to a multi-dimensional analysis and evaluation method for molecular feeding habits of coral reef phytophagous fishes, which comprises the following steps of: determining a specific primer aiming at complex characteristics of mixed food residues in a gastric substance sample, and performing multiple PCR (Polymerase Chain Reaction) amplification on a target gene to obtain DNA (Deoxyribose Nucleic Acid) bar code sequence data of a target fish food source; performing multi-stage comparative analysis on the DNA bar code sequence data and sequence data in a DNA reference database; constructing a molecular characteristic sequence map of different species in the gastric contents according to an analysis result; and according to the molecular characteristic sequence map, determining a feeding preference index of the target fish so as to evaluate the regulation and control capability of the population structure of the target fish on the growth of the macroalgae in the coral reef ecosystem. According to the method, the feeding habit composition of the coral reef phytophagous fishes can be comprehensively analyzed, a scientific basis is provided for protection and management of a coral reef ecological system, and the efficiency of feeding habit analysis and the accuracy of ecological evaluation are effectively improved.

The invention discloses an environment RNA (Ribonucleic Acid)-based double-saw eye spot fish detection method and a primer combination thereof, and solves the technical problems of lack of molecular markers, insufficient detection specificity and difficulty in reflecting physiological status in application of an existing environment RNA detection technology to benthic fishes. The primer pair aiming at the Ptger4b gene is designed on the basis of an environment RNA (eRNA) technology, and rapid and sensitive detection of the gemphus ocellatus in an independent feeding system is realized in combination with a fluorescent quantitative PCR (qPCR) technology. The method is easy and convenient to operate, high in sensitivity, small in interference to the ecological environment and suitable for detection and quantitative verification of target species in an independent feeding system, and has the potential of being expanded to natural sea areas in the future and used for fish population monitoring, fishery resource evaluation and species protection.

The invention discloses a fish habitat real-time monitoring system based on Internet of Things. Comprising a data acquisition module used for acquiring fish habitat data, a communication networking module used for transmitting the acquired data, an analysis early warning module used for analyzing the data, a comprehensive management module used for assisting device operation and a propaganda education module used for propagandizing habitat education. Water quality parameters, hydrological parameters, fish activity data and human activity data of a fish habitat are collected, analysis data are generated in an analysis and early warning module, an ecological health index of the fish habitat is calculated, an early warning signal is generated, ecological risks of a fish living environment are predicted, and an ecological health index thermodynamic diagram is generated in a comprehensive management module. And real-time monitoring is completed under cooperation of multiple modules. The fish ecological resource environment is subjected to multi-source collection and analysis through the multi-source sensing technology, the correlation between fish habitat data and fish population distribution is deeply excavated, information of the habitat is accurately grasped, the monitoring accuracy is high, and the risk pre-judgment capability is high.

The invention belongs to the technical field of ecological restoration, and provides a mountainous river-oriented fish diversified habitat natural shaping restoration method, which comprises the following steps of: determining fishes with a relative important index greater than 5% in a river as target fishes; the habitat factors of the river are screened, the habitat factors with colinearity are divided into a factor group, and only one habitat factor is reserved in each factor group to serve as a representative habitat factor; carrying out modeling on the resource distribution and representative habitat factors of the target fishes by adopting a generalized additive model; screening to obtain a generalized additive model with a minimum akaike information criterion, and determining an optimal habitat factor combination; and determining a restoration scheme according to the habitat factor combination, and adjusting the habitat of the target fish. According to the restoration method, the natural process is simulated to remodel the diversity of the mountain river habitat, the key problems of hydrological connectivity fracture, habitat simplification, engineering and ecological contradiction and the like are solved, and fish population restoration and ecological system self-maintenance are achieved.

The present invention relates to the field of marine biological feeding, in particular to a method for multi-dimensional analysis and evaluation of the molecular feeding habits of coral reef herbivorous fish. Specific primers are determined for the complex characteristics of mixed food residues in gastric content samples, and multiplex PCR amplification is performed on target genes to obtain DNA barcode sequence data of the food sources of target fish; the DNA barcode sequence data is subjected to multi-level alignment analysis with the sequence data in the DNA reference database; a molecular characteristic sequence map of different species in the gastric content is constructed according to the analysis results; feeding preference indexes of target fish are determined according to the molecular characteristic sequence map to evaluate the regulation ability of the target fish population structure on the growth of macroalgae in the coral reef ecosystem. The present invention can comprehensively analyze the feeding habits of coral reef herbivorous fish, provide a scientific basis for the protection and management of coral reef ecosystems, and effectively improve the efficiency of feeding habit analysis and the accuracy of ecological evaluation.

Systems and methods are disclosed for transferring or transporting fish, such as for fish loading, as well as measurement and control. A fish transfer system as disclosed protects the welfare of the fish population. The system may also maintain and stabilize fish transfer rate within a target rate. A fish transfer system as disclosed allows for dynamic adjustment of the transfer rate as required by the end application without negatively impacting the fish pump performance or the fish population welfare. Measurement and control of biomass density and other properties may be achieved based on data obtained from one or more cameras mounted on a fish loading device, such as a smart funnel, as well as other cameras above the water. A system may be configured to operate in a plurality of operating modes, and may be dynamically adjusted and adapted to the application in which it is being used.

An improved marine life sanctuary assembly that is completely underwater and is designed to duplicate a natural mangrove that provides protection and promotes an underwater ecosystem, which can help reverse the decline in the fish population, aviary habitats, erosion, and the like and help to promote land and marine colonization.

The embodiment of the invention discloses a fish population dynamic monitoring method and system based on a reaction diffusion model, and the method comprises the steps: obtaining a fish school echo signal, collected by underwater sonar equipment in real time, of a target water area, and generating three-dimensional point cloud data representing the spatial density distribution of a fish school; performing maximum and minimum angle triangular mesh division on the three-dimensional point cloud data; in each triangular grid unit in the non-cross triangular grid structure, according to the fish school density difference value and the unit center distance between the adjacent units, an instantaneous convection velocity field induced by the fish school gathering behavior is calculated, and the convection velocity direction points to the adjacent units with the high density from the units with the low density; taking the instantaneous convection velocity field as a unique convection driving item of a reaction diffusion model, and combining with a preset diffusion coefficient to construct a dynamic partial differential equation; and carrying out numerical solution on the dynamic partial differential equation by adopting a finite volume method, and outputting a predicted fish population density spatio-temporal evolution result. According to the invention, the real-time performance and precision of dynamic monitoring are improved.

The embodiment of the application discloses a fish population dynamic monitoring method and system based on a reaction diffusion model, the method comprising: acquiring fish school echo signals of a target water area collected by an underwater sonar device in real time to generate three-dimensional point cloud data representing spatial density distribution of the fish school; performing maximum minimum angle triangular mesh division on the three-dimensional point cloud data; in each triangular mesh unit in a non-crossing triangular mesh structure, calculating an instantaneous convection velocity field induced by the aggregation behavior of the fish school according to a fish school density difference between adjacent units and a unit center distance, and the convection velocity direction is from a unit with lower density to an adjacent unit with higher density; taking the instantaneous convection velocity field as the only convection driving term of the reaction diffusion model, combining a preset diffusion coefficient to construct a dynamic partial differential equation; and adopting a finite volume method to numerically solve the dynamic partial differential equation and output a predicted fish population density spatio-temporal evolution result. The application improves the real-time performance and accuracy of dynamic monitoring.

Provided is a culturing facility comprising: a rearing water tank for rearing a cultured fish stock; an inspection device for performing a non-destructive inspection of a living cultured fish stock; and an information processing device that derives information relating to the amount of at least one organ on the basis of an inspection result acquired by the inspection device. Provided is a method for culturing fishes, comprising a selection step for selecting a parent fish from a cultured fish stock on the basis of information relating to the amount of at least one organ acquired during a non-destructive inspection of a living cultured fish stock.

To provide: an agent that reduces a strange taste while holding saltiness in a seasoning; and a method therefor.SOLUTION: A strange taste reducing agent for potassium chloride which contains steam distillate of dried fish flakes is prepared. Further, according to one embodiment, a seasoning is prepared by a method including: putting dried fish flakes into a container and introducing steam into the container; extracting a volatile component at 60-130°C; cooling the extracted volatile component to 6-70°C to collect steam distillate of the dried fish flakes; and blending the collected steam distillate of the dried fish flakes together with potassium chloride.SELECTED DRAWING: None

The invention discloses an automatic and accurate fish stock feed feeding device and method based on a laser technology. The device comprises seven parts including a laser emitting end, a laser emitting end height adjusting control device, a laser receiving end, a laser receiving end height adjusting control device, a liquid level transmitter, an intelligent controller and a feed feeding machine. The method comprises the steps that the intelligent controller synchronously adjusts the laser transmitting end and the laser receiving end to the water surface according to a culture water body height signal sent by the liquid level transmitter, the laser transmitting end and the laser receiving end are located on the same horizontal plane, and the feed feeding machine is started regularly according to a preset time point; the ingestion intensity of the fish schools is calculated according to the blocking frequency of the blue-green laser signals caused by ingestion of the fish schools, a graded feed feeding strategy is adopted, a corresponding feed feeding strategy is selected according to the ingestion intensity, and accurate feeding is achieved. According to the invention, through multi-channel and high-frequency laser transmission path shielding detection, the ingestion activeness of fish schools is directly quantified.

The invention provides an otolith shape detection and identification method based on machine learning, and relates to the technical field of otolith detection, and the method comprises the steps: S101, obtaining an original otolith image, and carrying out the preprocessing of the original otolith image; s102, the user marks a core reference line on the original otolith image; s103, forming an ROI region along the core reference line, and performing feature extraction on the ROI region to obtain ROI region features; s104, constructing a wheel pattern recognition model, providing prior constraints for the wheel pattern recognition model by using an environment-wheel pattern association rule, inputting the ROI region features into the wheel pattern recognition model, and outputting wheel pattern position information and wheel pattern number information; and S105, visualizing the position information of the wheel ripples and the number information of the wheel ripples. According to the method, the otolith ring pattern recognition efficiency and accuracy can be improved, reliable data support can be provided for fish population dynamic monitoring, fishery resource evaluation and ecological environment research, and the application range is wide.

This invention proposes a data analysis-based method and system for assessing fish resources in reservoirs, belonging to the field of resource assessment. The method includes collecting ecological characteristic data and population characteristic parameters of introduced and native fish populations in the reservoir; calculating niche overlap indices between introduced and native fish populations in both spatial and trophic dimensions, and integrating these to obtain a comprehensive niche difference index; calculating the population growth potential of each population and obtaining a fitness difference index; processing the comprehensive niche difference index and fitness difference index to obtain a coexistence stability score and determining the coexistence stability level of the two populations; acquiring time-series data of the niche overlap index, extracting fluctuation characteristic parameters, and generating a fish resource assessment report based on the fluctuation characteristic parameters and the coexistence stability level. This invention can comprehensively assess niche differences between populations.

The invention relates to the technical field of fishery breeding, and discloses a fish breeding net cage with a classification function, which comprises a frame, a breeding box is mounted in the frame, slideways are arranged on the two sides of the top of the breeding box, and a moving assembly and a connecting assembly are mounted on the slideways on the two sides respectively; the inner side of the moving assembly and the inner side of the connecting assembly are each provided with a connecting plate, and the connecting plates are connected with a partition plate. By arranging the partition plates, the partition plates are installed in the breeding box through the connecting assembly and the moving assembly, and partition of the inner space of the breeding box is achieved; fish fingerlings of different sizes can be conveniently classified and bred in different breeding areas, the overall growth of fish schools is guaranteed, and the breeding efficiency and economic benefits are improved.

The present invention provides a method for analyzing the stability of reef fish communities based on a symbiotic graph, comprising the steps of: S1: Analyzing the stability of reef fish communities, comprehensively considering the dependence relationship and the trophic relationship to quantify the relationship between coral reefs and fish populations; constructing a symbiotic graph and using the PMA graph kernel method for similarity calculation; S2: Identifying the priority areas for protecting reef fish communities, and using the Louvain algorithm to divide the module structure of the communities in unstable years. The method for analyzing the stability of reef fish communities based on a symbiotic graph according to the present invention addresses the problems of single and less objective calculation methods for interspecies relationships in previous studies, and proposes a model that can effectively express the biological relationships of reef fish communities; addresses the problem of low accuracy of the methods for measuring community changes in previous studies, and designs a method that can effectively measure community changes to analyze the stability of the communities; and further identifies the areas that need to be protected first according to the analysis results of community stability.

The application provides a kind of alien fish invasion risk dynamic identification method and system, it is related to data processing technical field, method includes: collecting the multi-source ecological monitoring data of each monitoring point in a specific time period;The multi-source ecological monitoring data is preprocessed, and the standardized ecological data set is obtained;Based on the standardized ecological data set, the discrete state space model is constructed for different fish populations respectively;By extending the least square method, the parameters of discrete state space model are dynamically identified;According to the dynamic identification of discrete state space model, the dynamic change trend of local fish state variable under given invasion pressure is predicted;Combined with multi-source ecological monitoring data and dynamic change trend, fuzzy reasoning model is constructed;Multi-source ecological monitoring data is input into fuzzy reasoning model, and the invasion risk comprehensive evaluation value is output;Alien fish invasion risk grade is dynamically divided;According to the invasion risk grade of alien fish, intervention strategy instruction is automatically generated.

The utility model relates to the technical field of fish feed feeding, and provides an automatic fish feed feeding device which comprises a feed tank and a feeding pipe fixedly communicated with the bottom of the feed tank. By arranging the feeding mechanism, fish feed can be swung and spread in the fish tank, and the problem of excessive feed in some areas can be solved, so that the risk that fish schools cannot completely consume the feed and cause water quality problems is reduced; the flow amount of fish feed can be controlled through the arrangement of the amount control mechanism, then quantitative feeding of the fish feed is achieved, residual feed can be reduced to the maximum extent through quantitative feeding, waste and pollutants in a water body are reduced, and the water body can be kept clean and stable in water quality condition; the humidity in the feed tank can be controlled and managed through the arrangement of the moisture-proof mechanism, and the quality and efficiency of fish feed can be improved, so that the feeding environment of fishes is improved, and healthy growth of the fishes is promoted.

The invention relates to the field of intelligent fishery and ecological protection, in particular to a fish traceability and ecological monitoring method based on an RFID reader of the Internet of Things, which comprises a system body mainly composed of a fish identification tag, an RFID reader, a water quality sensor, a cloud data analysis platform and the like, and a fish traceability and ecological monitoring application method implemented based on the system body. Compared with the prior art, the system has the advantages that based on the RFID identification technology, water quality of a water area and fish in the water area are supervised, a reliable individual traceability tool is provided, the brand value of aquatic products and the credibility of consumers are improved, the functions of electronic fence and water quality monitoring are deeply integrated, the ecological management value of a project is enhanced, and in addition, the system has a good application prospect. And a new means for long-term, automatic and low-cost monitoring of fish population dynamics and evaluation of ecological restoration effect is provided for ecologists.

The invention provides a method for artificial insemination and fertilized egg incubation of wild schizothorax parvus, which comprises the following steps: on the basis of ascertaining the biological characteristics of the wild schizothorax parvus through tracking and monitoring for many years, capturing sexually mature male and female parent fishes, carrying out artificial insemination after sperm and egg treatment, obtaining fertilized eggs, and carrying out micro-running water incubation, so that the fertilization rate reaches 85%, and the incubation rate reaches 70%. The artificial insemination of the rare and endangered indigenous fish Schizothorax parvum in the Luagu Lake and the trial culture of the first filial generation of fish fries are successfully carried out for the first time in China, the blank in the field is filled, the artificial domestication, breeding and culture of the Schizothorax parvum are completely feasible and are preliminarily successful, and the specific fish population of the Luagu Lake is recovered, developed and cultured, so that the economic benefits of the Luagu Lake and the Schizothorax parvum are improved. High-quality offspring seeds are provided, and the method has important significance on lake enhancement and release and improvement of fishery economic benefits.

Conventional fish counting devices require a large installation space and suffer from problems such as reduced counting accuracy due to external light and water flow. [Solution] This invention integrates the flow path and counting device, reducing installation space. It is equipped with light blocking means and water draining means to reduce the influence of the external environment and improve counting accuracy. The calculation unit detects fish based on imaging data and achieves accurate counting. As a result, counting accuracy is improved regardless of the shape or movement of the fish, making fish population management in the fisheries industry simpler. Furthermore, it has a function to output the counting results to another electronic device, which can improve the efficiency of data management. As a result, improved work efficiency and accuracy can be expected.

The utility model provides an ecological protection comprehensive breeding device which comprises an oxygen conveying main frame and a supporting frame arranged in the middle of the oxygen conveying main frame, a power supply mechanism is arranged on the supporting frame, a plurality of breeding modules are arranged between the oxygen conveying main frame, each breeding module is communicated with the power supply mechanism through the oxygen conveying main frame, and the breeding modules are connected with the power supply mechanism through the oxygen conveying main frame. The breeding module comprises a breeding frame detachably connected with the oxygen conveying main frame, a supporting ring arranged in the middle of the breeding frame, a seedling raising bowl detachably connected to the supporting ring, and a self-sensing oxygenation mechanism fixed to the bottom of the supporting ring and extending into the breeding frame. An opening is formed in the bottom of the seedling raising bowl and communicated with the interior of the breeding frame. According to the utility model, effects in multiple aspects are integrated, and a good growth environment is provided for breeding of fish populations.

The present application belongs to the technical field of fishery resource assessment, and provides a method for assessing fish population resource quantity. The method is based on multi-year daily scale fishery data and time corresponding environmental monitoring data, and differentiates the fish capture data and environmental factor data, and on this basis, an environmental response assessment model between fish population resource quantity and various environmental factors is constructed. The assessment model simultaneously reflects the linear influence and nonlinear response characteristics of environmental factors on fish population resource quantity, and the model parameters are determined using historical data, and after the parameters are determined, the fish population resource quantity of the same water area in different time periods can be continuously assessed. The method can effectively improve the stability and accuracy of fish resource quantity assessment, and is suitable for fish resource management and decision support in natural waters such as rivers, lakes and reservoirs.

The invention relates to the technical field of ecological slope protection, in particular to an ecological slope protection structure for dam water and soil conservation protection, which comprises a trapezoidal dam, a cement protection slope is arranged on one side of the trapezoidal dam, a guardrail is mounted on the cement protection slope, a moving frame is arranged on the guardrail in a sliding fit manner, and a water guide seat is rotatably connected to the moving frame. A water guide seat is arranged on the cement protection slope, a fishway is hinged to one side of the water guide seat, an adjusting mechanism is rotatably connected to the interior of the water guide seat, a water gathering seat is fixedly connected to one side of the water guide seat, and a water adding mechanism is fixedly connected to the water gathering seat. Under the driving of the adjusting mechanism, one end of the fishway can be inserted into downstream water. By means of the buffer plates in the fishway, the ecological function of the dam area can be effectively improved, and breeding and maintaining of fish populations are promoted. Not only is a necessary migration channel provided for fishes, but also the biological diversity of species is guaranteed.

The utility model discloses a fish tank feeder with a moisture-proof function, which comprises a feeding box, the feeding box comprises a fish feed bin and a feed delivery bin located below the fish feed bin, and a feed delivery mechanism capable of partially sliding out of the feed delivery bin to feed fish feed into a fish tank is arranged in the feed delivery bin. When the feeding mechanism slides out, a feeding opening with an upper opening and a lower opening is formed in the portion, located on the outer side of the feeding bin, of the feeding mechanism, a discharging opening corresponding to the upper opening of the feeding opening when the feeding mechanism does not slide out is formed in the bottom of the fish stock bin, the heating bin is fixedly connected with the feeding bin, and a lamp panel is arranged in the heating bin. And a heating lamp for heating the feeding bin is arranged on the lamp panel. Compared with the prior art, the device has the advantages that the heating lamp in the heating bin can be used for drying the damp part in time, so that the fish feed in the feeding bin and the fish feed bin is prevented from being damped and mildewed.

This invention discloses a method, apparatus, and equipment for estimating fish stock in ponds based on a machine learning model, relating to the field of fisheries counting technology. The method includes: acquiring pond data of the pond to be estimated; the pond data includes: meteorological data, basic fish data, fish feeding data, and water quality data; inputting the pond data of the pond to be estimated into a stock estimation model to obtain an estimated value of the fish stock in the pond; the stock estimation model is obtained by training a machine learning model using pond data from multiple training ponds and the corresponding actual values ​​of fish stock, and the machine learning model includes: a first sub-model, a second sub-model, a third sub-model, a fourth sub-model, and a fifth sub-model. This invention improves the accuracy of fish stock counting.

The invention discloses an acoustic fish luring system and method for a fish school in a deep sea culture environment, and relates to the technical field of fish culture, and the method comprises the steps: collecting a natural predation signal of the fish school through a hydrophone, and transmitting the natural predation signal to a data processing and control center; the data processing and control center receives the natural predation signal, obtains a waveform and a frequency according to the natural predation signal, sends a control instruction and parameter setting to the signal generator according to the waveform and the frequency, receives the control instruction and the parameter setting at the signal generator, and generates a first electric signal based on the control instruction and the parameter setting; sending the first electric signal to a power amplification device, then amplifying the first electric signal through the power amplification device to obtain a second electric signal, sending the second electric signal to a water energy sound conversion device, finally converting the second electric signal into a fish gathering signal through the water energy sound conversion device, and outputting the fish gathering signal. Collected fish stock natural predation signals are converted into fish gathering signals, and therefore the fish gathering and catching efficiency is improved.