11 results about "Bivalve mollusk" patented technology

The invention discloses a method for detecting the biological enrichment microplastic degree of bivalve mollusks in a deep sea extreme environment. According to the method, biocenosis is sampled to acquire a community structure representing a biological bed layer, then morphological characterization statistics is carried out to classify age stage data of shellfish individuals, a multivariate factor analysis method is used to obtain the shellfish individuals with the largest contribution degree in each classification age stage, then tissue-divided micro-plastic extraction is carried out, and the classification age stage data of the shellfish individuals with the largest contribution degree is obtained. The method comprises the following steps: reducing the form of seabed micro-plastics, carrying out process identification on full-size micro-plastics, tracing the duration of adsorbing the micro-plastics by each shellfish monomer by virtue of a carbon-14 dating method, and constructing a seabed shellfish dynamic enrichment curve by splicing the life of each shellfish; and finally amplifying to the whole shellfish bed layer to deduce the microplastic enrichment rate and historical accumulation amount of the whole extreme ecosystem. The method provides a scientific basis and a technical support for formulating an effective marine environment protection strategy and clarifying a marine micro-plastic source-sink relationship.

The invention discloses a method for progressively extracting and identifying microplastics in bivalve in a deep sea methane leakage area according to sizes and levels. According to the method provided by the invention, biological tissues are subjected to freeze drying and dehydration, and micro-plastics contained in bivalve mollusks in an extreme environment are extracted in a lossless and classified manner by using a plurality of experimental steps such as a pH staged enhanced enzyme-hydrogen peroxide mixed digestion solution, hierarchical progressive vacuum suction filtration, identification according to size advantages and the like. The invention aims to realize quantitative and qualitative analysis of full-size micro-plastic in the bivalve according to size ranges. The characterization method is suitable for exploring microplastics enriched in each tissue of bivalve in a deep sea extreme ecosystem, and is matched with a captured seabed shellfish bed, so that the time history and historical accumulation of microplastics absorbed by the whole extreme ecosystem are deduced, and the problem of large-scale sampling, extraction and analysis in a deep sea extreme environment is solved; and a scientific inspection strategy is provided for the influence of the microplastic pollution history in a specific sea area.

To provide an apparatus for opening a bivalve shell such as a scallop by simply placing it manually or the like and continuously cutting the joint between one shell and the adductor muscle. [Solution] The device of the present invention is composed of a loading and conveying section I, a two-sided cutting section II, a shell fixing and scallop adductor muscle / shell joining and cutting section III or a shell fixing and scallop adductor muscle / shell joining and cutting section III', and a processed shell discharge section IV. By placing a bivalve shell on a platform plate connected to the conveyor chain of the conveying section, the shell is pressed against the platform plate by a pressing mechanism above the conveyor and sent to the cutting mechanism downstream of the conveying section, where a two-sided opening is formed in the end of the shell so as to cut off the hinge, the shell is supported on the platform plate by a shell fixing unit or the like downstream of the opening formation position, and as the shell moves on the conveyor chain, a knife is inserted into the shell from one of the opening sides by a knife pushing unit, and the knife is advanced and retreated to cut the joint between the adductor muscle and the shell, this bivalve shell opening device.

The invention belongs to the technical field of shellfish hemolymph collection, and discloses a bivalve shellfish hemolymph collection device. The device comprises a fixing device and a collecting device, the fixing device is composed of a base, a supporting rod, an operating rod, a control handle, a threaded rod, a moving block and a tool bit, shellfish organisms can be effectively fixed and opened, hemolymph can be conveniently collected, the collecting device comprises a vacuum tube and a bidirectional needle head, and the collecting device automatically extracts the hemolymph according to the vacuum negative pressure principle. The shellfish collecting device is simple in structure and convenient to operate, manual operation is not needed, the collecting efficiency and convenience are improved, the problems that in the prior art, shellfishes are fixed unstably, and operation is inconvenient are solved, and the device is simple in structure, convenient to operate, capable of effectively avoiding sample pollution and high in practicability and popularization value. The device is suitable for shellfish hemolymph sampling.

The present invention relates to the technical field of farming aquatic animals, such as bivalve mollusks, for example, oysters or scallops. In particular, the present invention provides a device, system and method for farming mollusks. This invention improves production efficiency in the farming of mollusks, mainly bivalve mollusks, by handling the movement of said mollusks and defining a specific area for each individual. This entails an improvement in individual survival, improving farming density and reducing loss caused by death.

The invention provides a device for monitoring and evaluating heavy metal pollution risk by utilizing benthic bivalve mollusks, belongs to the technical field of seawater detection, and solves the technical problem that seawater in a deep sea area is difficult to monitor and evaluate in real time in the prior art. A device for monitoring and evaluating heavy metal pollution risks by utilizing benthic bivalve mollusks comprises a floating frame and a sinking frame arranged at the bottom of the floating frame, a plurality of air bags are fixed to the floating frame, a plurality of winding assemblies are arranged on the floating frame, a plurality of mooring ropes are arranged on the floating frame, the mooring ropes are connected with the corresponding winding assemblies, and the sinking frame is arranged on the floating frame. A connecting rope is connected between the floating frame and the sinking frame, a length adjusting assembly is arranged in the floating frame, and the length adjusting assembly is connected with the connecting rope. The method has the advantage that the heavy metal pollution risk of the deep seawater is evaluated and detected by utilizing the benthic bivalve mollusks.

This invention relates to the field of food nutritional quality assessment technology, and discloses a method for predicting the lipid nutritional quality of bivalve mollusks based on climate change driving factors. The method includes: determining the family to which the bivalve mollusks to be predicted belong and their geographical region; obtaining the change values ​​of climate change driving factors in the region, including temperature, aragonite saturation, salinity, and dissolved oxygen; determining the lipid nutritional quality indicators to be assessed, and constructing a prediction model based on the correlation between the lipid nutritional quality indicators corresponding to different geographical regions and different bivalve mollusks and the change values ​​of climate change driving factors; substituting the obtained change values ​​of climate change driving factors into the prediction model to calculate the predicted values; and assessing the lipid nutritional quality indicators of the bivalve mollusks to be predicted based on the predicted values ​​and outputting the results. This invention reveals the response mechanism of mollusks' lipid metabolism to climate factors, providing objective data support for the site selection assessment and suitable species screening for bivalve mollusks.

The invention provides a bivalve shell opening and closing behavior identification method. A to-be-recognized image is acquired, the to-be-recognized image is input into a trained bivalve shell detector, and whether at least one target bivalve shell exists in the to-be-recognized image or not is detected according to the bivalve shell detector. And if not, returning to execute acquisition of the to-be-identified image, and if yes, acquiring a target bivalve mollusk set. And inputting a to-be-recognized image into the trained open bivalve mollusk instance divider, detecting the to-be-recognized image according to the open bivalve mollusk instance divider, and obtaining an initial open bivalve mollusk set. And carrying out matching processing on the target bivalve mollusk set and the initial open bivalve mollusk set, and obtaining a shell opening and closing behavior identification result of the to-be-identified image. Therefore, on the basis of the bivalve detection result, the bivalve shell opening and closing behavior recognition is realized in combination with the open bivalve shell instance segmentation result, and the accuracy of bivalve shell opening and closing behavior recognition is improved.

The present invention discloses a navicula active substance for promoting the attachment and metamorphosis of bivalve mollusks and its application. The navicula active substance is a polysaccharide of the active metabolite of navicula, which includes glucose, D-fucose, D-xylose, D-galactose, D-mannose, etc. The raw materials for its preparation are ecological and pollution-free. The prepared polysaccharide is non-toxic, and the preparation method is convenient and fast. It has been experimentally confirmed that the polysaccharide of the active metabolite of navicula can improve the attachment and metamorphosis rates of several late-veliger larvae such as scallops, oysters and ark clams, has the effect of inducing the attachment and metamorphosis of bivalve mollusks, has a high metamorphosis efficiency, can improve the economic benefits of bivalve mollusk farming, and has good application prospects.

The invention belongs to the technical field of gene editing, and particularly relates to a gene editing method for obtaining a bivalve adult edit. The method specifically comprises the following steps: by taking a target gene which has a visual phenotype in appearance and is not lethal in early development as a marker, designing a targeting site sgRNAs based on the marker, and constructing a Cas9 / sgRNAs edit body by virtue of an electrotransfection system, so as to realize gene editing of bivalve mollusks and obtain an adult edit body. According to the method, the technical bottlenecks that the existing bivalve mollusk gene editing is only limited to the larva development stage and the edit adult screening is difficult are broken through, and a new technical system is provided for the creation of bivalve mollusk edit germplasm materials. In addition to oysters, the technical system is also suitable for other bivalve shellfishes with small fertilized eggs, difficulty in micro-injection and high larva culture death rate.

The invention discloses a bivalve mollusk transport case and a using method. The bivalve mollusk transport case comprises an outer transport case and an inner storage case. The storage inner box is nested in the transportation outer box; a gap is reserved between the storage inner box and the transportation outer box; the storage inner box further comprises a sponge plate, and the sponge plate is soaked with water and placed in the storage inner box. Wherein a cooling cavity is formed in a gap between the transportation outer box and the storage inner box, and the cooling cavity is used for injecting cooling water. Therefore, according to the bivalve mollusk transport case, the low-temperature water in the water injection layer of the bivalve mollusk transport case is used for keeping the storage inner case at a low temperature, sufficient humidity can be provided for the storage inner case by soaking the sponge plate, bivalve mollusks are put into the storage inner case to be transported, a large amount of water does not need to be relied on any more, light-weight transport is achieved, and meanwhile the transportation efficiency is improved. As a large amount of water does not need to be injected into the storage inner box, the space utilization rate of the transport box is increased, and the effects of reducing cost and increasing efficiency are achieved.