4 results about "Scylla serrata" patented technology

The invention relates to a submarine mobile trolley for a blue crab culture frame and a control method thereof. The trolley comprises a chassis frame, rollers, left and right driving wheels and a motor, and dynamic regulation and control of forward and reverse rotation and real-time rotation speed of the left and right driving wheels are achieved through a PLC control module. The wheel speed and the longitudinal and transverse speeds are obtained in real time when the trolley is controlled, real-time longitudinal force and lateral force are further calculated by establishing a driving wheel dynamic slip angle differential equation and a slip rate calculation model, coupling correction factors are introduced to construct an optimal left and right wheel rotating speed solving model, and the rotating speeds of left and right driving wheels are dynamically optimized. Iteration termination is judged through a friction utilization rate threshold value, vehicle body running gravity center balance is achieved, and running stability is guaranteed. The trolley is compact in structure and suitable for self-positioning, traction, obstacle avoidance and stable transportation of the blue crab breeding frame in the narrow space. The trolley can achieve path guiding, obstacle recognition and positioning parking, is suitable for carrying the blue crab breeding frame in a narrow channel, and is compact in structure, self-adaptive in path and stable in operation.

This invention belongs to the field of biotechnology, specifically relating to a non-harmful DNA extraction method for *Scylla serrata* (scuttica crab) and its application. This invention successfully achieves non-harmful DNA extraction from *Scylla serrata* by collecting its swimming leg setae, significantly reducing the impact on the crab's activity and ensuring its survival after sampling. The extraction method of this invention is non-lethal to *Scylla serrata* and possesses good repeatability and high accuracy. Extracting DNA from *Scylla serrata* using its swimming leg setae ensures that the crab's activity remains unchanged, allowing it to survive and perform its life activities normally. Obtaining the DNA sequence of *Scylla serrata* and performing gene markers provides a foundation for genomic selection breeding, facilitating parent selection and offspring breeding in mud crab genetics.

The invention belongs to the technical field of ecological restoration and aquaculture, particularly relates to a method for breeding blue crabs in a mangrove forest planting and breeding coupling system, and provides the following scheme for improving the food output and ecological value of the mangrove forest planting and breeding coupling system or an area suitable for mangrove forest breeding. The method comprises the following steps: S1, selecting a proper area as a mangrove forest planting area and a blue crab breeding farm; s2, trimming the selected area, constructing a culture purse seine, and planting mangrove plants and aquatic plants in the purse seine; s3, mussel fertilized eggs or planktonic larvae are introduced in the water inlet process, and meanwhile, artificial fry collection in a sea area is conducted and moved into a culture system; s4, water treatment is conducted, cultured fish, shrimp and crab seeds are put in, and feeding and culturing are started. The mangrove forest ecological system is used for promoting mussel breeding and breeding the blue crabs, the blue crab breeding cost is effectively reduced, the blue crab quality is improved, and protection and restoration of the mangrove forest ecological system are facilitated.

The invention relates to the technical field of intelligent bait casting, and discloses an intelligent bait casting method and system for scylla paramamosain seawater fries, and the method comprises the steps: extracting a motion track and distribution characteristics according to a real-time motion image of the scylla paramamosain fries in a culture pond, and obtaining behavior characteristic parameters of the scylla paramamosain fries; when the activity degree of the motion trail in the behavior characteristic parameters exceeds a historical data threshold value, it is judged that the scylla paramamosain seeds are in a real-time starvation state; according to the linear relation between the historical bait casting amount and the historical hunger state, the real-time bait casting amount is determined; controlling a bait casting device to scatter bait according to the real-time bait casting amount; after the bait distribution is completed, acquiring the feeding image of the offspring seeds again, and analyzing the feeding image of the offspring seeds, so as to obtain feedback data of the distributed bait; based on the feedback data, the linear relation is dynamically adjusted, and the real-time bait casting amount of the bait casting device is updated according to the dynamically-adjusted linear relation; the intelligent bait casting efficiency can be improved.