A method and device for aquaculture of individual oysters in open sea

Abstract

The invention discloses a method and a device suitable for cultivation of cultchless oysters in open sea deepwater regions. The method comprises: breeding cultchless oyster larvae, putting the cultchless oyster larvae in a cultivation device, and putting the device in an open sea deepwater cultivation region to breed, and managing a cultivation period of the cultchless oysters, and harvesting. The cultivation device is a net cage which is a rectangular frame made of rebars. The top of the frame is provided with a polyethylene rope used to tie the device on a raft frame to culture. Four corners on the bottom of the frame are provided with landing legs. The frame is internally provided with a plurality of layers of drawers. The method and the device solve problems that quality of oyster offshore cultivation is low, growth speed is slow, and survival rate is low. The cultivation device resists rushing ocean current and rough sea of open sea, and the device is low in manufacturing cost, and can be used repeatedly. The device provides a high-quality natural culture environment for oyster growth, so growth speed of oysters is fast, the oysters are not polluted, and are in high quality. The cultural oysters can be used for raw eating, and satisfy export demand. The device and the method have good economic benefits.

Description

technical field [0001] The invention relates to a method for cultivating single oysters, in particular to a method and device for cultivating single oysters in deep water areas of the open sea. Background technique [0002] Individual oysters are oysters that are free and without anchorage. Oysters have the living habit of flocking. Many oysters are often fixed together. Due to the limitation of growth space, the shell shape is extremely irregular, which greatly affects the appearance. The flocking also causes oysters to compete for food, affecting their growth rate. Clustering also increases the workload for harvest stripping and processing. Individual oysters are not limited by the growth space due to their free nature, so the shell shape is regular and beautiful, and the size is uniform, which can improve the quality and grade of oysters, so the price is expensive, the benefits are significant, and it is easy to stock and harvest. [0003] At present, the oyster farming...

AI Technical Summary

Problems solved by technology

[0003] At present, the oyster farming method in my country is mainly raft-type hanging rope farming. Because the oysters cultured on the rope are easy to fall off as the oysters grow up, it is not suitable for open seas and sea areas with strong waves, but only for calm inner bays, and the breeding range is limited; A small amount of scallops are used to cultivate individual oysters in net cages. However, during the cultivation process, the edges of the oyster shells are extremely sharp and easy to cut the net cages. On the one hand, it causes damage to the growing cages, making them unusable, increasing the cost of breeding, and not suitable for open seas and sea areas with strong waves

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