29 results about "Predation" patented technology

The application discloses a kind of control fishing yield seal population recovery potential evaluation method and device, it is related to marine ecological protection and restoration field, mainly includes: four steps of modeling, predation rate calculation, fishing quantity reduction stage determination and seal population recovery potential evaluation.The application is based on Ecopath model, by introducing predation rate parameter, dynamically adjusts seal food habit matrix, reduces the data requirement of modeling, realizes the quantitative evaluation of fishing control measure protection benefit, provides practical method tool for seal population recovery potential evaluation.Therefore the seal population recovery potential evaluation method and device based on control fishing yield provided by the application have good seal population recovery potential evaluation ability, and can be widely applied to marine biological population resource recovery potential evaluation field.

The application provides a breeding pond bird prevention device, which comprises a mounting framework and a protective net connected with the mounting framework; the mounting framework comprises two first supporting rods arranged in parallel with each other and two second supporting rods arranged in parallel with each other, the lower end of the second supporting rod is connected with an extension rod arranged at an angle with the second supporting rod and extending away from the first supporting rod; the protective net comprises a first net body, a second net body and a third net body connected in sequence; the two first supporting rods are connected through the first net body, the upper end of the first supporting rod and the upper end of the second supporting rod are connected through the second net body, and the upper end of the second supporting rod and the extension end of the extension rod are connected through the third net body. After the device is set, the first net body and the second net body can prevent birds from entering the shallow water area from the lower side of the third net body, the third net body forms a slope structure and covers the shallow water area, and birds can be prevented from standing on the shallow water area, thereby reducing the loss of fish and shrimp caused by bird predation.

The utility model relates to the technical field of freshwater fish breeding, and discloses a reservoir ecological freshwater fish rotifer preying device which comprises a material tank, a lower floating block for providing buoyancy is arranged at the bottom of the material tank, a motor is fixedly installed in the middle of the top side of the material tank, and six sets of discharging openings are formed in the bottom wall of the material tank in an array mode. A feeding assembly used for assisting in feeding rotifers is arranged in the material tank, a triggering assembly used for triggering and starting the feeding assembly is arranged in the middle of the supporting plate, and a photovoltaic panel used for providing power for all the components is arranged on the outer side of the material tank. Fish schools can be attracted to gather through the bionic bait, when the fish schools bite the bait, the guide rod can be driven to move downwards, so that the contacts make contact with one another, then the motor can be started, the gear disc rotates to drive the rotating rod to rotate, and then the spiral discharging rod is driven to rotate in the discharging opening to assist in rotifer throwing; therefore, fish schools can prey conveniently, and waste is avoided.

The utility model discloses a multi-chamber bait device which comprises a bait shell, the bait shell is provided with a trapping cavity and a trapping hole, the trapping cavity is communicated with the outside through the trapping hole, the bait shell is further provided with a plurality of trapping grooves formed in the bottom of the trapping cavity, the trapping grooves are mutually independent, and bait which is filled through a hot filling technology and has different ingredients is arranged in the trapping grooves respectively. The bait is tightly attached to the corresponding trapping groove. According to the multi-cavity bait device, the trapping grooves are formed in the bottom of the trapping cavity, and the bait with different ingredients is injected into the trapping grooves in a hot filling mode, so that the multi-cavity bait device can meet the predation preference of cockroaches of different varieties, and the trapping effect is good. And the baits are filled into the corresponding trapping grooves by adopting a hot filling process, so that the baits are tightly attached into the corresponding trapping grooves, and the situation that different baits roll and collide relative to the bait shell to cause odor mixing and influence the trapping effect is avoided.

The application relates to the technical field of pest control, in particular to a natural enemy insect releasing device for forest pest control, which comprises a UAV body, a fixing seat fixed at the bottom end of the UAV body and a plurality of stainless steel pipe releasing barrels fixed at the bottom end of the fixing seat at equal angles. When the sealing cover plate is opened for releasing, the smooth material surface of the arc-shaped glass sheet contacts with insects, the surface of the arc-shaped glass sheet is free of fiber protrusions and has extremely low friction coefficient, crawling insects can smoothly climb to the releasing port, the climbing success rate is obviously improved, and the subsequent predation and breeding capacity is not affected. When the sealing cover plate is closed and releasing is not performed, the ground glass roller rotates to drive the ground glass surface to face the inside of the stainless steel pipe releasing barrel, sufficient climbing support points are provided for insects, the insects can climb to different heights of the inner wall of the stainless steel pipe releasing barrel, the problem that the insects are crowded and accumulated at the bottom of the stainless steel pipe releasing barrel is solved, and the body surface damage and suffocation risk caused by extrusion are avoided.

The invention relates to an omnivorous fish control method and application thereof, and belongs to the technical field of water ecological restoration. The invention provides a control method for omnivorous fishes. The control method comprises the following steps: putting carnivorous fishes into a small water body containing the omnivorous fishes; the mass ratio of the carnivorous fishes to the omnivorous fishes is 1: (1-3). According to the method, carnivorous fishes with a specific proportional relation are put into a small water body containing omnivorous fishes, so that the biomass of the omnivorous fishes can be remarkably reduced, a cascade effect is triggered, the predation of the omnivorous fishes on zooplankton is reduced, the biomass of the zooplankton is increased, the predation of the zooplankton on planktonic algae is increased, and the survival rate of the zooplankton is increased. Furthermore, the disturbance of omnivorous fishes to the bottom mud can be reduced, and the total suspended matter concentration is reduced, so that the effect of repairing the water quality is achieved.

The utility model belongs to the technical field of predatory mites, and particularly relates to a thrip predatory mite feeding device which comprises a base, a feeding box and a supporting device. The supporting device is arranged on the surface of the feeding box and the surface of the base and comprises a plurality of supporting plates, the supporting plates are inserted into the inner surface of the feeding box, a storage box is arranged on the upper surfaces of the supporting plates, two storage blocks are fixedly connected to the two sides of the storage box correspondingly, and a separating device is arranged at the bottom end of the base and comprises a water tank. The upper surface of the water tank is fixedly connected with the bottom end of the base. Supporting frames are fixedly connected to the four corners of the bottom end of the water tank. By arranging the whole device, predatory mites can be bred in a relatively uniform mode, so that large-scale breeding is facilitated, meanwhile, the position of the storage box can be conveniently adjusted so as to adapt to different breeding requirements, the breeding box can be conveniently disassembled and assembled through part of parts of the supporting device, and thus the breeding box can be conveniently cleaned.

The invention discloses an application of an lprR gene in regulating and controlling the predation capability of stenotrophomonas maltophilia. The invention provides a substance for inhibiting or reducing or down-regulating the content or activity of LprR protein, or a substance for inhibiting or reducing or down-regulating the expression of an LprR protein coding gene, and any one of the following applications: 1) improving the predatory ability of stenotrophomonas maltophilia; experiments prove that after the lprR gene is knocked out, the predatory ability of the mutant under the hungry condition is remarkably improved, the predatory ability of a complementary strain basically recovers to be consistent with that of a wild type, and in an NYG culture medium, the predatory ability of the mutant, the predatory ability of the complementary strain and the predatory ability of the wild type are not remarkably different.

This invention relates to the field of forestry pest and disease control technology, specifically to an intelligent simulation system for the control effect of natural enemies in forestry pest and disease control. The system includes an ecological monitoring integration module, a behavior stage discrimination module, a predation rate inversion module, a stage index mapping module, and a parameter feedback correction module. Based on forest pest monitoring nodes, it analyzes the pest quantity information uploaded by the nodes and determines the sampling point location corresponding to signal changes. This invention integrates forest pest monitoring data, natural enemy activity, and environmental changes in a time series, and introduces behavior stage discrimination based on ecological state information. Combined with paired statistics of natural enemy behavior and pest quantity, it dynamically reveals the ecological response relationship under different behavior stages. The simulated data can automatically adjust the parameter set according to periodic monitoring differences, and the stage effects and trends are promptly mapped into management indicators, making the simulation of control effects more stage-discriminative and ecologically adaptable.

The present application relates to the field of fish farming early warning, in particular to a kind of intelligent isolation device and early warning method for carnivorous fish cannibalism based on machine vision.The device mainly includes a breeding tank, a visual acquisition module, a system control and data processing mechanism, and an array air curtain generating mechanism at the bottom of the tank.The visual acquisition module acquires real-time water images in the breeding tank.A posture perception network capable of outputting target spatial position and multiple structural key points is used in embedded terminal operation.The vector angle and Euclidean distance of fish spine are calculated in real time by extracting anatomical key points such as fish head, dorsal fin and tail handle.When the target fish presents a high-curvature attack posture, the system immediately locks the conflict area through coordinate mapping and drives the integrated micro-porous aeration pipe array to release compressed air, generating a vertical non-contact bubble barrier between the attacker and the victim, achieving physical isolation.The present application is suitable for fish farming.

The utility model belongs to algae-eating insect cultivation technical field especially relates to algae-eating insect screening cultivation device, including incubator and support leg, the support leg fixed mounting is in the cultivation box bottom all around, the inside of cultivation box is provided with cultivation device, the cultivation device includes screening mechanism, washes screening mechanism, cleaning mechanism and aeration mechanism, the screening mechanism sets up in the inside of cultivation box, washes screening mechanism and set up in the back of cultivation box, the cleaning mechanism sets up in the inside of cultivation box bottom, the aeration mechanism sets up in the inside of cultivation box lower extreme. This algae-eating insect screening cultivation device, through setting up screening mechanism, through the starting motor through output shaft drive disc rotation, disc rotation drives mounting seat one eccentric rotation under the action of ball head rod, pulls screening box and reciprocates along the guide rod left and right and shakes, thereby makes the young algae-eating insect to pass through screening box, realizes the separation of larva and adult, prevents adult predation larva, improves the algae-eating insect cultivation efficiency.

The invention discloses a grouper and penaeus vannamei three-dimensional symbiotic polyculture system and polyculture method, and belongs to the technical field of seawater net cage ecological culture. The system comprises a double-layer three-dimensional net cage, a middle-layer anti-predation separation net, a prawn three-dimensional attachment base, a feeding unit and a water body exchange unit, the net cage is divided into an upper-layer grouper culture area and a lower-layer prawn inhabiting area through the middle-layer anti-predation separation net, and the prawn three-dimensional attachment base is arranged on the lower layer for prawns to inhabit and shell. In the breeding process, grouper fries are put first, penaeus vannamei fries are put after 5-10 days, only the upper layer is fed with grouper feed, and the penaeus vannamei grows through residual feed, organic debris and plankton. Safe symbiosis of the groupers and the penaeus vannamei is achieved, predation is effectively prevented, the bait utilization rate and the unit water yield are improved, pollution and diseases are reduced, and the device has the advantages of being simple in structure, ecological, environmentally friendly and remarkable in benefit and is suitable for offshore net cage large-scale cultivation.

The invention relates to the field of seedling domestication, and discloses an anti-stress capability enhancement and domestication method for enhanced and released seedlings, which comprises the following steps: respectively carrying out nutrition enhancement, environment domestication, endurance domestication and natural enemy anti-stress stimulation training on the enhanced and released seedlings, and outputting qualified enhanced and released seedlings. Wherein the anti-stress ability can be improved to the maximum extent by constructing the bionic natural enemy model to perform anti-stress stimulation training on the enhanced and released offspring seeds. According to the method, the physique and behavior adaptability of the released offspring seeds can be fundamentally improved, the live bait preying ability of the enhanced released offspring seeds is trained, the natural enemy avoiding ability is recognized, and the water flow adapting endurance is achieved, and the method is crucial to long-term survival of the enhanced released offspring seeds in the field. The anti-stress intensified domestication of the enhanced and released fries by simulating natural enemies and real natural enemies is also an anti-stress intensified training method with the highest efficiency.

Frame to protect grass seed from predation by birds.

The invention belongs to the field of multi-nutrition-level polyculture ponds, and particularly relates to a trachinotus ovatus-penaeus monodon-blue crab multi-nutrition-level polyculture pond which comprises a pond body, a lower-layer separation net is slidably connected to the lower middle portion of the inner wall of the pond body, and an upper-layer separation net is slidably connected to the upper middle portion of the inner wall of the pond body. The lower end of the upper-layer separation net is fixedly connected with a plurality of evenly-distributed supporting legs, and the upper end of the upper-layer separation net is fixedly connected with a supporting rod. The upper-layer separation net, the lower-layer separation net, the dismounting and mounting mechanism and other structures are additionally arranged in the pond body, in the using process, the pond body can be divided into three layers for breeding through the upper-layer separation net and the lower-layer separation net, independent species can be separated, mutual predation among bred objects can be effectively avoided, and the breeding efficiency is improved. In addition, in the breeding process, the bottom of the pond body can be oxygenated through an air conveying pipe, a rotary oxygenation frame and other structures at the bottom, and oxygenation of the water body in the pond body can be more uniform.

The present application relates to the field of intelligent aquaculture and computer vision technology, in particular to a kind of abalone feed intake monitoring system based on image recognition, comprising: image acquisition module, for collecting high frame rate video stream data containing biological activity and feed distribution;Physical reference reconstruction module, based on initial feed characteristics, combined with fluid dynamics and dissolution parameters, deduce the theoretical evolution reference map of the current time;Behavior probability generation module, identify biological mouth key points and motion vectors, generate dynamic predation probability field;Double rail difference module, difference operation is carried out to real image and theoretical evolution reference map, and non-physical disappearance residual area is generated;Coupling verification module, residual area is mapped into probability field, and effective feeding behavior is determined based on spatial overlap degree;Data output module, according to the determination result, the accurate intake data is output cumulatively;The present application solves the counting problem caused by shielding, and significantly improves the monitoring robustness.

The invention discloses a method for evaluating the influence of ampullaria gigas on the structure and function of a water ecosystem, and the method comprises the steps: constructing cross-character dispersion based on the plant height, biomass, chlorophyll content and carbon, nitrogen and phosphorus content of a submerged plant, and generating an initial disturbance quantity of the plant; then forming an ingestion structure quantity according to the proportion of a scraping type, a collecting type, a filtering type, a preying type and a tearing type in the benthic ingestion type group, and performing reverse treatment on the initial disturbance quantity of the plants to obtain a first disturbance group; further forming a floating structural quantity according to the water pH, dissolved oxygen, oxidation-reduction potential, suspended solids, nutritive salt concentration, turbidity and plankton diversity index, and performing reverse treatment on the first disturbance group to obtain a second disturbance group. And on the basis, constructing a system-level functional structure by using the plant initial disturbance quantity, the ingestion structure quantity and the floating structure quantity according to a multi-level corresponding relation, and generating the ecological influence quantity of the ampullaria gigas on the structure and the function of the water ecosystem according to the functional structure.

The application discloses a method and device for inducing and domesticating the swimming ability of one-side of large yellow croaker, and belongs to the technical field of marine biological resource conservation. The application comprises a water tank for inducing and domesticating the swimming ability of one-side of large yellow croaker; a T-shaped domestication swimming channel is arranged in the domestication area, the T-shaped domestication swimming channel comprises a starting arm and left and right arm areas respectively arranged on both sides of the starting arm, a left fish gathering area and a right fish gathering area; first movable doors for communicating with or separating the left and right arm areas from the corresponding fish gathering areas are respectively arranged on the left and right arm areas; a second movable door for communicating with or separating the starting arm from a temporary breeding area is arranged on the starting arm; a flow maker and a flow equalizing orifice plate are arranged in a flow making area, and the end of the starting arm away from the temporary breeding area is provided with the flow equalizing orifice plate. The application also provides corresponding inducing and domesticating methods. The device of the application can improve the swimming ability of one-side of large yellow croaker in natural sea areas after the juvenile fish is released and domesticated for a period of time, so that the predation efficiency of the juvenile fish is improved, the risk of being preyed on is reduced, and the survival rate after release is improved.

This invention relates to the field of ecological risk assessment technology, and in particular to a method and system for assessing human-wildlife conflict risk in nature reserves. It constructs a list of conflicting species and a standardized distribution dataset by integrating multi-source data. Based on a maximum entropy model, a stacked species distribution model is built to calculate species hazard levels. For three types of conflict—crop damage, livestock predation, and personal injury—arable land, grassland, and population density are matched as exposure indicators, respectively. Based on a "hazard level × exposure level" framework, categorized risk sub-models are constructed, and a comprehensive risk raster map is generated by overlaying these sub-models. Finally, the overall risk assessment value is calculated using nature reserves as units. This invention addresses the problems of existing human-wildlife conflict risk assessment technologies, which fail to effectively integrate multi-species contributions, differentiate conflict types, and adapt to large-scale protected area systems.

The invention discloses an olfactory ability improving method for wild training of captive South China tigers, and relates to the technical field of animal behavior training and wild adaptation. Aiming at the defects of lack of systematized and staged olfactory ability training and predation behavior strengthening processes and lack of a multi-dimensional quantitative evaluation system in the prior art, the invention provides a method which comprises the steps of collecting environment and individual behavior data, screening suitable individuals, formulating a training scheme, implementing odor stimulation training in stages, and evaluating and adjusting in stages. And a quantitative recording and whole-process monitoring method is adopted. The method can effectively improve the recognition ability of the South China tiger to the prey smell and the field survival ability, realizes the scientization and standardization of the wild training process, and is suitable for the wild training and behavioral ability improvement work of captive individuals of endangered large felines.

This invention relates to a method for propagating the Japanese ladybug and its application, belonging to the field of insect population propagation technology. The method for propagating the Japanese ladybug includes introducing Japanese ladybugs to lay eggs on eggplant leaf discs, which hatch into larvae; feeding Mediterranean mealybug eggs in a culture dish to obtain adult Japanese ladybugs; mating and egg-laying in a concentrated manner to obtain Japanese ladybug eggs; and repeating this cycle to complete the propagation of the Japanese ladybug. The Japanese ladybugs propagated by this invention show significantly improved growth, development, and reproduction, with a significantly increased survival rate, and their predation ability against whiteflies is comparable to that of natural populations.

The invention discloses a long-spiny starfish distribution monitoring method based on fish intestinal content detection. The method comprises the following steps of: preferably selecting detection fingerlings suitable for different seasons by acquiring information of fishes fed by starfish in a target water area and seasonal predation habits of the fishes; establishing a layered position change model of intestinal contents along with time by combining fish food digestion ability data; the method comprises the following steps: detecting intestinal contents of fingerlings through layered extraction, detecting the concentration of DNA fragments of starfish, and determining the ingestion time; in combination with activity characteristic data of fishes, based on a Bayesian probability distribution model, reversely deducing space-time distribution characteristics of the long-spiny starfishes in a target water area, and generating a distribution probability graph; the method has the advantages of strong non-direct interference, wide adaptability, high timeliness and the like, and can provide a scientific basis for prevention and control management and ecological risk assessment of the longspiny starfish.

The application discloses an improved three-dimensional DV-Hop positioning method based on continuous hop count and raccoon predation mechanism and belongs to the field of wireless communication. The method firstly converts hop count from discrete value to continuous value, thereby reducing accumulated error in distance estimation stage. Then, the method introduces similar path weighting calculation of the best average hop distance of unknown nodes, effectively reducing the communication frequency between nodes and network energy consumption. Finally, the method combines raccoon predation mechanism and elite strategy, enhances the global search ability and convergence precision of the original raccoon population, converts the three-dimensional positioning problem into a minimum optimization problem, and further reduces positioning error and calculation cost. The raccoon predation mechanism is adopted, a fitness function is constructed through a mapping equation and a positioning error function, the method breaks through the application limitation of the existing node positioning method under three-dimensional wireless sensor network space deployment, and has wide engineering value.

The present application relates to the technical field of microorganism, and particularly relates to a conical arthrobotus AC-ChiE01 strain and application thereof. The present application provides a conical arthrobotus AC-ChiE01 strain, the chitinase activity of the strain is significantly higher than that of a wild type strain, and the predation efficiency on the second instar larvae of horse roundworm is also significantly improved compared with the wild type strain. In addition, the conical arthrobotus AC-ChiE01 strain provided by the present application has good growth characteristics, and the sporulation capacity of the strain does not have obvious disadvantages compared with the wild type strain, and the conical arthrobotus AC-ChiE01 strain has a broad application prospect in the biological control of livestock digestive tract nematodiasis.

The utility model relates to a rice field frog raising ecosystem which comprises planting areas and a feeding area located between the planting areas, the feeding area extends linearly, a supporting part used for placing bait is arranged in the feeding area, and at least one bearing end of the supporting part extends to the edge of the system; water flows into the supporting part from the bearing end and impacts the bait. According to the utility model, through the cooperation of the supporting part, the bait can be dispersed by water flow after being thrown on the supporting part, so that the bait is uniformly distributed on the supporting part so as to facilitate the predation of frogs, and meanwhile, compared with the prior art, the structure can prevent the frogs from being too concentrated together in the predation process, so that the frogs are prevented from being damaged. Therefore, the compression damage to the seedlings is reduced.

The invention discloses a virtual power plant optimal configuration method and system based on a hunting optimization algorithm, and the method comprises the steps: constructing a virtual power plant model according to the operation characteristics of distributed energy resources; according to the virtual power plant model, constructing an optimization model with the goal of minimizing the operation cost of the virtual power plant and the unsupplied electric quantity in extreme weather; according to the optimization model, performing iterative optimization on the position and capacity of the virtual power plant in the radial power distribution system by using a hunting optimization algorithm to obtain an optimal configuration scheme; and performing scheduling control on the virtual power plant according to the optimal configuration scheme. According to the method, a hunting optimization algorithm is adopted, the preying behavior of a hunter is simulated, global search and local development capabilities are balanced through a position updating mechanism, and the high-dimensional nonlinear optimization problem in virtual power plant configuration is effectively solved. Compared with a traditional method, the method can remarkably improve the toughness of the intelligent micro-grid under the extreme fault condition, reduces the operation cost, and improves the power supply reliability.

The application discloses a kind of protective devices for plant seedling anti predation, it is related to ecological planting technology and endangered species protection technical field, including: base, the top of the base is detachably installed with protective cover, the middle part of the base is provided with collection groove two, the bottom collection groove two of the base is detachably connected with protective enclosure bucket;Ring, the ring is installed in the upside position of base, and located in the inside of the protective enclosure bucket;Turnover mechanism, the turnover mechanism is installed on protective cover;The application is cooperated with the setting of protective cover by turnover mechanism, can make in the process of seed cultivation, movable plate one forms cylindrical structure, realizes the protection to seed and is convenient to seed fertilization irrigation, when seed grows into seedling, movable plate one can be turned over and open, facilitate seedling to carry out photosynthesis, simultaneously to some animals are intimidated, prevent animals from predation to seedling, the device can realize protection to plant growth each cycle.

The application discloses an artificial breeding and storage method of the farming and forestry pest predatory spider Zora spinimana represented by Malacosoma americanum. On the basis of obtaining the theoretical daily maximum predation amount of Zora spinimana to different instar Malacosoma americanum larvae, the artificial breeding and propagation of Zora spinimana are carried out by using the substitute prey of the oceanic worm, the yellow mealworm and the silkworm, and the suitable substitute prey size and the breeding condition are screened, and a low-temperature storage method is provided. The mass breeding of Zora spinimana can provide a stable research sample source for the Zora spinimana, and lays a solid foundation for in-depth research on the biological characteristics, behavior habits, genetic mechanisms and the like of the Zora spinimana. Further research on the storage method can ensure the long-term preservation and effective utilization of the Zora spinimana sample, maintains the physiological activity and genetic information of the Zora spinimana, and enables the Zora spinimana to continue to play a role in future research.