Method for culturing cold-water fishes through in-situ utilization of low-temperature seawater of Yellow Sea cold water mass (YSCWM)

Abstract

The invention relates to a method for culturing cold-water fishes through in-situ utilization of low-temperature seawater of a Yellow Sea cold water mass (YSCWM). The method is characterized in that culture factory ships and peripheral lined floating net cages, overtravel net cages and variable-water-layer net cages thereof are placed in an YSCWM sea area, and the culturing of the cold-water fishes is carried out by directly using a low-temperature seawater resource of the cold water mass. A factory ship can be used for culturing the fishes, also serves as a working platform and can be used for providing feed, attendance and staff accommodation for surrounding all classes of cage fish culture. When upper-layer water temperature exceeds appropriate growth temperature of the cold-water fishes in high-temperature seasons, the factory ships pump the low-temperature seawater of the cold water mass to culture the cold-water fishes and pump the low-temperature seawater of the cold water mass to the lined floating net cages, lower parts of the overtravel net cages are located in the cold water mass, and the variable-water-layer net cages can sink into the cold water mass so as to carry out culture activities; and when the temperature of upper-layer seawater is appropriate to the growth of cultured fishes, the factory ships, the lined floating net cages, the overtravel net cages and the variable-water-layer net cages all are used for culturing the fishes by using the upper-layer seawater. By adopting the method, the offshore cold-water fish culture of Yellow-Sea sea areas can be implemented; and the method has the characteristics of low culture cost, environment-friendliness and the like.

Description

technical field [0001] The invention belongs to the field of aquaculture and marine resource development, and in particular relates to a method for cultivating cold-water fish by utilizing low-temperature seawater resources of the Yellow Sea cold water mass in situ. Background technique [0002] The most successful marine fish in Shanghai aquaculture in the world is Atlantic salmon (salmon). The aquaculture output of Norway alone is as high as more than 1.5 million tons, while the total output of marine aquaculture fish in my country in 2014 was only 1.18 million tons. Atlantic salmon is a high-quality marine cold-water fish that is not resistant to high temperatures. Due to the low latitude of my country's sea area and the high water temperature in the upper layer of the ocean in summer, some marine cold-water or cold-water fish (such as flounder, flounder, salmon, and trout) cannot survive the summer in general aquaculture water bodies. At this stage, we mostly rely on ext...

AI Technical Summary

Problems solved by technology

Although some people have proposed the large-scale comprehensive utilization technology of the cold water mass in the Yellow Sea, and envisaged the technical approach of pumping low-temperature seawater to land for mariculture, however, this technology of ectopic utilization of low-temperature cold water aquaculture fish cannot solve the current problem of marine cold-water fish. Bottleneck problems of high cost and heavy pollution

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