9 results about "Cannibalism" patented technology

According to the technical scheme, the sheltering device is characterized by comprising a plurality of layers of flexible rope nets, the rope nets are horizontally arranged and arranged in the vertical direction, the rope nets are sequentially connected, the two sides of the rope net on the top layer are connected with supporting rods respectively, the supporting rods are connected with floating blocks, and the floating blocks are connected with the rope nets on the bottom layer. The rope net on the bottom layer is connected with a sinking block, and a telescopic piece is connected between the supporting rods and used for adjusting the distance between the two supporting rods. The multi-layer rope net can provide rest and sheltering for shrimps in the molting period in a culture water body and avoid similar disabilities, and the telescopic piece is arranged so that the distance between the supporting rods can be adjusted at any time, and therefore the size of meshes of the rope net can be adjusted, and the multi-layer rope net can adapt to shrimps of different specifications and growth stages.

The invention discloses a method for culturing Eriocheir sinensis with oyster shells, which comprises the following steps: S1, pretreating a crab pond, and laying a microporous oxygenation pipeline; s2, collecting the waste oyster shells, and performing cleaning, disinfection and drying treatment; s3, the oyster shells treated in the step S2 are stacked in a long ridge shape in the crab pond in the direction parallel to the micropore oxygenation pipeline, and the whole crab pond is disinfected; s4, waterweed is planted in the oyster shell ridge direction in the middle ten days of January; s5, crab species are stocked in early February, so that the environment richness of the crab pond is improved, self-killing of the river crabs is reduced, the survival rate is increased, and the adult crab breeding technology is more environmentally friendly and efficient.

This invention relates to the field of artificial breeding technology for natural enemy insects, and in particular to a method for the artificial breeding of the assassin bug *Triplophysa pulcherrima*. The invention employs steps including seed source collection and screening, rearing environment control, feed supply and management, mating and reproduction management, oviposition and egg mass collection, nymph hatching and age-differentiated rearing, overwintering management, and cannibalism control. By providing specialized rearing management devices, temperature and humidity conditions, standardized feed feeding, age-differentiated rearing density control, and moisture-controlled egg mass hatching, it solves the problems of high mortality rates among young nymphs, unstable mating success rates, low egg mass hatching rates, and the lack of a year-round breeding system in existing technologies. The method of this invention is simple to operate, has a high survival rate (nymphal survival rate exceeding 85%), an egg mass hatching rate exceeding 90%, and can achieve 4-5 generations per year, enabling large-scale, year-round production of *Triplophysa pulcherrima*, providing high-quality natural enemy resources for the biological control of agricultural and forestry pests.

The invention relates to the field of fish culture early warning, in particular to a carnivorous fish similar feeding intelligent isolation device based on machine vision and an early warning method. The device mainly comprises a culture box, a visual collection module, a system control and data processing mechanism and an array type air curtain generation mechanism located at the box bottom, the visual collection module obtains a water body image in the culture box in real time, and an embedded terminal operates and uses a posture sensing network capable of outputting a target space position and multiple structure key points at the same time. The vector included angle and Euclidean distance of the spine of the fish body are calculated in real time by extracting anatomical key points such as the head, dorsal fins and caudal peduncles of the fish body; when a target fish body is monitored to present a high-curvature attack posture, the system locks a conflict area immediately through coordinate mapping, drives the integrated micropore aerator pipe array to release compressed air, and generates a vertical non-contact bubble barrier between an attacker and an attacked person to realize physical isolation. The invention is suitable for fish culture.

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 discloses a biomimetic nest for macrobrachium culture, and relates to the technical field of macrobrachium culture, the biomimetic nest for macrobrachium culture comprises an elastic bandage, a plurality of biomimetic modules are arranged inside the elastic bandage, and the biomimetic modules are bound and fixed through the elastic bandage. The bionic module comprises a fixing assembly and pipe bodies, one fixing assembly corresponds to four pipe bodies, the four pipe bodies are located on the periphery of the fixing assembly, the fixing assembly comprises a center base, connecting arms are arranged on the peripheral surface of the center base, fixing frames are arranged at one ends of the connecting arms in a hot melting mode, and the fixing frames are connected with the fixing assemblies in a hot melting mode. By means of the scheme, the problems that when existing macrobrachium rosenbergii is bred, due to the fact that the macrobrachium rosenbergii is prone to being stacked together, the macrobrachium rosenbergii fight with one another, the macrobrachium rosenbergii eats silkworm after shelling, the death rate is high, and the breeding effect is poor are solved.

This invention relates to a grading device for juvenile fish rearing, addressing the problem of cannibalism among juvenile fish during rearing, leading to injury or even mass mortality. The device features a cylindrical central pool at the center of the rearing pond. A first pool and a second pool are located on either side of the central pool. These pools are separated, allowing water to pass through but not fish. Fish-passing plates with holes are installed on the side walls of the central pool, corresponding to the first and second pools. A rotating shaft connects to a rotating drive net plate at the central axis of the central pool. A swinging intercepting net plate is installed on the inner side of the central pool wall, beside the fish-passing plates. When retracted, the swinging intercepting net plate rests against the pool wall; when extended, its inner end abuts against a central pillar. This invention separates smaller juvenile fish during rearing, reducing stocking density and minimizing cannibalism.

This invention discloses an intelligent fish fry size, color, and sex selection system based on morphometric feature recognition. The system includes a fry batching module, a diversion and conveying module for processing the fry fed through the batching module, and a fry feature and size discrimination module located above the diversion and conveying module. The fry feature and size discrimination module provides the diversion basis by acquiring fry feature information from fry images. The module includes a shell, a high-definition camera and lighting embedded in the shell facing the diversion slide, and an image processing component installed inside the shell. This invention designs a multi-angle screening system for fry size, body color, and sex, overcoming the three key difficulties in fish fry breeding: size selection, color selection, and sex selection. It effectively solves problems such as cannibalism between larger and smaller fish, selection of ornamental fish, and sex selection at the fry stage, accelerating the artificial breeding process and improving production efficiency.

The application relates to the crab breeding technical field and discloses an ecological crab nest simulating a natural environment, which comprises the following steps: a pipe body is arranged to be inclined relative to a horizontal plane, a clay layer attached in the pipe body forms a hollow channel and a main body bin, the main body bin is located at one end of the pipe body with a lower height, one end of the pipe body with a higher height is provided with a hole, a top wall of the pipe body is provided with a feeding opening for feeding the main body bin, one end of the channel is communicated with the main body bin, and the other end of the channel extends to be communicated with the hole; the diameter of the channel is matched with the body of a crab, and the diameters of the main body bin and the hole are greater than the body of the crab. Compared with natural water area or pond culture, the ecological crab nest is convenient to salvage, is not easy to cause harm to the crabs during fishing, does not affect the appearance, can realize one crab one nest, reduces the cannibalism of the crabs and the influence of other breeding varieties, is beneficial to the survival and growth of the crabs, the crabs are fed through the feeding opening, feeding into water is avoided, feed waste is reduced, and pollution to water quality is effectively avoided.