14 results about "Aquaculture engineering" patented technology

The invention discloses a method for cultivating kelp seedlings through diploid female gametophyte parthenogenesis, and belongs to the field of aquatic product engineering genetic breeding. And hybridizing the female and male single cell cloning lines of the induced protonema to obtain the tetraploid sporophyte. And the tetraploid sporophyte is mature and releases zoospores, diploid gametophytes are germinated and formed, and then male and female separation is performed to obtain diploid female gametophyte clone lines in batches. Under the culture condition provided by the invention, parthenogenesis of a diploid female gametophyte clone line is utilized for seedling culture. The diploid female gametophyte begins to ovulate after 6-7 days, and the ovulation time of the diploid female gametophyte is obviously earlier than that of haploid gametophyte in the same period and under the same condition. The 12-day ovulation rate reaches 86.5%, the 24-day sporophyte conversion rate reaches 98.3%, and most sporophyte forms are normal. In the seedling raising period, parthenogenesis seedling raising of the diploid female gametophyte is completed. The diploid female gametophyte can be used as a brand-new kelp germplasm material to be applied to kelp seedling cultivation.

The invention relates to the technical field of ocean renewable energy sources and aquaculture engineering, and discloses an offshore wind power and aquaculture net cage fusion structure and a mounting method thereof, and the fusion structure comprises a wind driven generator, an aquaculture net cage, a floating body structure and an anchoring system; the aquaculture net cage is of a truss structure, nettings are arranged on the inner side of the truss structure, and a wind driven generator is arranged on the upper portion of the truss structure. A floating body structure is arranged on the outer side of the aquaculture net cage, and the anchoring system is connected to the floating body structure in a single-point mode. The invention aims to provide the fusion culture net cage structure which is simple in structure, controllable in cost, uniform in stress distribution and self-sufficient in clean energy, so that the fusion culture net cage structure is suitable for marine application, automatic wind alignment and floating posture self-adjustment are realized, and the utilization rate of marine space and renewable energy sources is increased.

The invention belongs to the field of aquaculture engineering, and particularly relates to an automatic identification and feeding shellfish larva cultivation system and method, and the system comprises a larva circulating water cultivation tank which is used for accommodating shellfish larvae and a circulating water body; the larva image acquisition device is used for acquiring larva image data and sending the larva image data to the control system; the peristaltic pump is used for receiving the control of the control system and quantitatively adding the bait algae liquid; the algae density sensor is used for collecting real-time microalgae concentration; the control system is used for receiving the image data of the larva image acquisition device and analyzing and acquiring the number of larvae and the shell length of the larvae; data of the algae density sensor is also received and converted into real-time microalgae concentration; meanwhile, according to the obtained data, the amount of bait algae liquid needing to be supplemented is calculated, the peristaltic pump is controlled to be started, and feeding is executed. The accurate feeding control system for the shellfish larvae is innovatively researched and developed, and the larva feeding amount is accurately controlled on the basis of the constructed accurate feeding preset model.

The invention provides a mariculture-wave energy power generation device capable of achieving stabilization, efficiency improvement and adjustable oxygenation, and belongs to the technical field of mariculture engineering.The mariculture-wave energy power generation device capable of achieving stabilization, efficiency improvement and adjustable oxygenation comprises a mariculture device, a wave energy capturing device, an oxygenation device and a PTO system; the mariculture device is a large mariculture net cage and is fixed by a mooring system, and most of a main body of the mariculture device is immersed in water; the wave energy capturing device is an oscillating floater with a wide upper part and a narrow lower part, is distributed around the mariculture net cage in an annular array form, is connected to the top of a mariculture net cage frame through a transmission arm, and is used for driving the transmission arm to swing up and down under the action of waves; the oxygenation device and the PTO system are located on the top of the mariculture net cage frame and connected with the forked pressing structures at the tail ends of the transmission arms respectively. The problems that in the prior art, wave power generation, mariculture, adjustable oxygenation and wave breaking stabilization and stability maintaining cannot be achieved at the same time can be solved.

The present invention is applicable to the field of aquaculture engineering, and provides a shrimp shell collection device for preventing live shrimp from escaping and automatically returning to the pond in a recirculating aquaculture shrimp pond, including a culture pond, and further including: a central water returner and a water distribution tank; a water return pipe is connected to the top of the central water returner, a buckling plate is arranged at the top of the central water returner, and a vertically downward rubber sheet is arranged at the side of the central water returner. The present invention constructs a water return tray with a rubber material, and the flexible material effectively reduces the frictional damage to organisms; the water distribution tank and its internal structure realize the automatic return of live shrimp to the pond and the automatic collection of shrimp shells, avoiding the problem of suffocation death caused by high-density aggregation of shrimp in the water distribution tank; through programmed automatic control, the goals of automatically collecting shrimp shells and dead shrimp and automatically returning live shrimp to the culture pond are achieved, greatly reducing the labor intensity of workers in the recirculating aquaculture shrimp workshop.

The invention discloses a recirculating water breeding system for simulating natural ocean current and a production promoting method, and belongs to the technical field of aquaculture engineering. The invention discloses a circulating water breeding system and a production promoting method for simulating natural ocean current. The system comprises a culture pond body structure, a bionic water flow stimulation subsystem, a circulating water treatment subsystem and an intelligent control subsystem, the method comprises the following steps of: preparing the system in a pond entering stage of parent fish of the Dongquasichthys nobilis, a gonad development promoting stage, an oviposition inducing stage and a postpartum management stage. The problems that in the prior art, a water flow mode is single and fixed, a gonad development stimulation mode is extensive, artificial insemination is relied on, the automation degree is low, and the overall breeding efficiency is low are solved. According to the method, an integrated circulating water culture environment is constructed, and complex tide and ocean current conditions of a natural spawning site of the Dongcao are accurately simulated, so that gonad development synchronization of parent fishes is effectively stimulated, the natural breeding behavior of the parent fishes is triggered, and the spawning amount and the fertilization rate are remarkably increased.

The invention discloses a net cage contamination identification and tracking integrated device and method based on electromagnetic and optical fusion perception, belongs to the technical field of intelligent marine equipment and aquaculture engineering, is used for net cage contamination identification and cleaning, and comprises an upper computer, a master mobile operation platform and a slave mobile operation platform, each mobile platform carries a multi-mode sensing unit, an intelligent processing unit and a cooperative control system; the method comprises the steps of multi-modal data synchronous acquisition and preprocessing, electromagnetic and optical fusion identification and tracking, accurate positioning and global mapping, and intelligent evaluation and collaborative decision making. Through deep fusion of optical and electromagnetic perception, the precision and robustness of underwater fouling identification are greatly improved, through integrated design of identification and tracking, dual-machine high-precision stable cooperation is realized, and the problem that a single tracking mode is liable to lose tracking is solved.

This invention relates to the field of aquaculture engineering technology, and discloses a gravity-based three-dimensional polyculture system for fish, shellfish, and algae based on intelligent monitoring, and its control method. The system includes a polyculture system net, which is used to optimize ecological efficiency when fish, shellfish, and algae are polycultured. The net contains polyculture support components. In this invention, the polyculture system net enables three-dimensional, stratified polyculture of fish, shellfish, and algae, establishing a complete trophic cascade relationship. Fish uneaten feed and excrement are filtered and utilized by mid-layer shellfish, shellfish metabolites promote the growth of bottom-layer algae, and algae photosynthesis oxygenates the system and absorbs eutrophic salts, forming a closed-loop, highly efficient ecological cycle. Combined with dissolved oxygen sensors, flow meters, and multi-dimensional water quality sensors for collaborative monitoring, the culture density at each layer can be precisely controlled, increasing the system's material conversion efficiency by more than 30% and reducing feed input by 25% compared to traditional monoculture models.

The application discloses a kind of east star spot circulating water breeding system and method for promoting production simulating natural ocean current, belong to aquaculture engineering technical field.The application of a kind of east star spot circulating water breeding system and method for promoting production simulating natural ocean current, system includes: breeding pond body structure, bionic water flow stimulation subsystem, circulating water treatment subsystem and intelligent control subsystem;Method includes system preparation and east star spot parent fish enters pool stage, gonad development promotion stage, spawning induction stage and postpartum management stage.The application solves the problems of single fixed water flow mode, extensive gonad development stimulation method, dependence on artificial insemination, low automation degree and low overall breeding efficiency in the prior art of east star spot circulating water breeding.The application constructs an integrated circulating water aquaculture environment, accurately simulates the complex tidal and ocean current conditions of east star spot natural spawning ground, thereby effectively stimulates parent fish gonad development synchronization, triggers its natural reproduction behavior, and significantly improves spawning quantity and fertilization rate.

The invention belongs to the technical field of aquaculture engineering, and particularly relates to a seepage type large-flux algae culture device for water purification, which comprises a support frame, a bolting-silk net and a fairing, the support frame is of a hollow cylindrical structure, the bolting-silk net is a cylindrical flexible netting with a closed bottom and an open top, the fairing is of a cylindrical structure with a closed bottom and an open top, and the fairing is of a hollow cylindrical structure. A water inlet and a water outlet are formed in the fairing, a height difference exists between the water outlet and the water inlet, and a spiral rectifying plate is arranged between the water inlet and the water outlet in the fairing in the height direction; the bolting-silk net is located in the spiral rectifying plate, and the supporting frame is located in the bolting-silk net. According to the invention, the flowing effect of outer-layer culture water is utilized, so that the internal algae culture solution and the external culture water maintain permeation exchange, the bolting-silk net does not directly hinder water flow, the water flux is large, the algae water purification module can be conveniently embedded into a circulating water culture system, and the problems of culture solution overflow, water shortage, difficulty in algae collection, difficulty in filter screen cleaning and the like are solved.

The invention relates to a precise feeding method for mandarin fish recirculating aquaculture based on gastrointestinal emptying parameters, and belongs to the technical field of aquaculture engineering, and the mandarin fish culture conditions are as follows: the water temperature is 25 + / -1.0 DEG C, the dissolved oxygen is greater than or equal to 7.0 mg / L, the pH is 7.8 + / -0.3, the salinity is less than or equal to 0.5, the nitrite is less than or equal to 0.05 mg / L, the ammonia nitrogen is less than or equal to 0.15 mg / L, and the illumination period is 12L: 12D. The crude protein of the special compound feed for mandarin fish is greater than or equal to 48%, the crude fat is greater than or equal to 10% (Guangdong Jiabig Feed Co., Ltd), the daily feeding amount is 2.5% of the body weight of the mandarin fish, and the feeding frequency is four times per day. According to the breeding method, the weight gain rate, the specific growth rate and the survival rate of the mandarin fish reach the highest level, and the feed coefficient is the lowest.

The invention relates to the technical field of aquaculture engineering, in particular to a modular gravity type fish-shellfish-algae multi-nutrition-level polyculture system and method.The system comprises a polyculture system support and a polyculture system netting, and the polyculture system netting is fixedly connected with the bottom of the polyculture system support; according to the invention, three-dimensional layered polyculture of fishes, shellfishes and algae is realized through the polyculture system netting, and a complete nutrition cascade relationship is constructed. Fish residual feed and excreta are filtered and utilized by middle-layer shellfish, shellfish metabolites promote growth of bottom-layer algae, algae photosynthesis increases oxygen for the system and absorbs nutrient-rich salt, and an efficient ecological cycle is formed. The culture density of each layer can be accurately regulated and controlled through cooperative monitoring of a dissolved oxygen sensor and a flow velocity meter, the material conversion efficiency of the system is improved by 30% or above, bait input is reduced by 25% compared with a traditional single culture mode, and the ammonia nitrogen content and turbidity can be reduced through the synergistic effect of algae carbon sequestration and shellfish filter feeding while polyculture is achieved.

The invention discloses a continuous circulating shellfish extracting device, which relates to the technical field of aquaculture engineering, and comprises a water-shellfish separating tank, a negative pressure device and a plurality of shellfish collecting tanks, a feeding cavity and a water absorption cavity which are communicated with each other are formed in the water-shell separation tank, and water in a water-shell mixture can enter the water absorption cavity; the multiple shellfish collecting tanks are communicated with the feeding cavity through discharging pipes, and the discharging pipes are provided with discharging control pieces capable of controlling on-off. A discharge port of each shellfish collecting tank is communicated with a discharge pipe, and the discharge pipe is provided with a discharge control piece capable of controlling connection and disconnection; the negative pressure equipment can absorb moisture in the water absorption cavity and provide negative pressure so as to absorb a water-shell mixture into the feeding cavity through the feeding pipe; a water outlet of the negative pressure equipment can be communicated with each shellfish collecting tank through a cleaning pipe, and the cleaning pipe is provided with a cleaning control piece capable of controlling on-off. According to the continuous circulating shellfish extracting device, the production efficiency is improved, and the breakage rate is reduced. The invention further provides a using method of the continuous circulating shellfish extracting device.