A crawfish harvest system and method of harvesting crawfish from a crawfish pond, without entry into the pond by personnel or boats. A crawfish trap deployment and retrieval unit is positioned by a crawfish pond. One or more crawfish traps are attached to a main line, which is engaged with the deployment and retrieval unit and runs into the crawfish pond and around one or more turn points in the pond, forming an endless loop of main line. The crawfish traps can be deployed into and retrieved from the crawfish pond by the deployment and retrieval unit pulling the main line, without personnel, boat or other entry into the pond.

A crawfish harvest system and method of harvesting crawfish from a crawfish pond, without entry into the pond by personnel or boats. A crawfish trap deployment and retrieval unit is positioned by a crawfish pond. One or more crawfish traps are attached to a main line, which is engaged with the deployment and retrieval unit and runs into the crawfish pond and around one or more turn points in the pond, forming an endless loop of main line. The crawfish traps can be deployed into and retrieved from the crawfish pond by the deployment and retrieval unit pulling the main line, without personnel, boat or other entry into the pond.

Provided is a method of culturing Stichopus japonicus Stichopus japonicus, Marsupenaeus japonicus, Portunus trituberculatus and Ulva lactuca, which belongs to the technical field of mariculture, including the following steps: preparing a pond and laying a substratum for Stichopus japonicus from March 1 to 5; putting the Stichopus japonicus seedlings, and then culturing Ulva lactuca seedlings on April 1; putting Marsupenaeus japonicus seedlings on April 15; putting Portunus trituberculatus juveniles on May 5; harvesting Marsupenaeus japonicus on July 15, and putting Marsupenaeus japonicus seedlings again; harvesting Stichopus japonicus, Marsupenaeus japonicus, Portunus trituberculatus and Ulva lactuca from November 5 to 10. By adopting the method of biological control of predators of Stichopus japonicus, the use of the pesticides and fishery drugs in the culture and pond-cleaning process is reduced, and green and healthy culture, energy saving and environmental protection are realized.

Provided is a method of culturing Stichopus japonicus Stichopus japonicus, Marsupenaeus japonicus, Portunus trituberculatus and Ulva lactuca, which belongs to the technical field of mariculture, including the following steps: preparing a pond and laying a substratum for Stichopus japonicus from March 1 to 5; putting the Stichopus japonicus seedlings, and then culturing Ulva lactuca seedlings on April 1; putting Marsupenaeus japonicus seedlings on April 15; putting Portunus trituberculatus juveniles on May 5; harvesting Marsupenaeus japonicus on July 15, and putting Marsupenaeus japonicus seedlings again; harvesting Stichopus japonicus, Marsupenaeus japonicus, Portunus trituberculatus and Ulva lactuca from November 5 to 10. By adopting the method of biological control of predators of Stichopus japonicus, the use of the pesticides and fishery drugs in the culture and pond-cleaning process is reduced, and green and healthy culture, energy saving and environmental protection are realized.

The present invention provides a delivery matrix comprising a carbohydrate derivative and at least one semiochemical for trapping and/or attracting and/or deterring at least one aquatic organism. The present invention provides a method for trapping and/or attracting a crustacean, said method comprising delivering an effective amount of specific semiochemicals.

The present invention provides a delivery matrix comprising a carbohydrate derivative and at least one semiochemical for trapping and/or attracting and/or deterring at least one aquatic organism. The present invention provides a method for trapping and/or attracting a crustacean, said method comprising delivering an effective amount of specific semiochemicals.

A single-seed shellfish floating aquaculture system includes rack bodies, mesh bags, and floats cooperating with each other. The rack bodies, the mesh bags and the floats are of a split structure and can be assembled into a whole. The rack bodies are made of corrosion resistant and rust resistant materials and assembled from a group of detachable flat-shaped structural members, a plurality of accommodation spaces are formed in the assembled rack bodies, the mesh bags are provided within the accommodation spaces, the floats are fixed on the rack bodies, and the single shellfish seedlings are directly put into the mesh bags to achieve single shellfish farming.

An aquaculture system (Sy) includes mineral sensors (22, 24, 26) for detecting the concentrations of minerals contained in rearing water within a rearing tank (50) for rearing an aquatic organism or the rearing water within a circulation passage (70), and an adjustment section which performs instruction issuance or operation for rendering the concentrations of the minerals contained in the rearing water coincident with their standards when the mineral concentrations detected by the mineral sensors (22, 24, 26) deviate from their standards.

A floating breakwater and wind energy integrated system used for offshore aquaculture. The system contains the wind turbine system, the floating breakwater system, and offshore aquaculture system. The combination of wind turbine, floating breakwater system and offshore aquaculture system makes full use of the floating breakwater, thus decrease the wave load on the floating cage. In addition, the floating breakwater offers a supporting platform to the floating wind turbine, which effectively reduces the costs of the wind turbine. Meanwhile, a power autarkic offshore aquaculture system may be realized by using the electrical energy generated by the turbine. Compared with the simple offshore aquaculture system, the utilization rate of the sea per unit becomes even higher while the costs of the floating wind turbine becomes even lower.

Provided is a method of culturing Stichopus japonicus Stichopus japonicus, Marsupenaeus japonicus, Portunus trituberculatus and Ulva lactuca, which belongs to the technical field of mariculture, including the following steps: preparing a pond and laying a substratum for Stichopus japonicus from March 1 to 5; putting the Stichopus japonicus seedlings, and then culturing Ulva lactuca seedlings on April 1; putting Marsupenaeus japonicus seedlings on April 15; putting Portunus trituberculatus juveniles on May 5; harvesting Marsupenaeus japonicus on July 15, and putting Marsupenaeus japonicus seedlings again; harvesting Stichopus japonicus, Marsupenaeus japonicus, Portunus trituberculatus and Ulva lactuca from November 5 to 10. By adopting the method of biological control of predators of Stichopus japonicus, the use of the pesticides and fishery drugs in the culture and pond-cleaning process is reduced, and green and healthy culture, energy saving and environmental protection are realized.