The spawning reef of a fork-shaped hexaline

Abstract

The invention discloses a furcated spawning reef for hexagrammos otakii. The furcated spawning reef comprises a bottom plate (1), a fixed middle shaft (6) is arranged in the middle of the bottom plate (1) and provided with spawn bearing plates (2), the included angle between the spawn bearing plates (2) and the bottom plate (1) is 10-70 degrees, and mesh bags are arranged on the spawn bearing plates (2). By means of the spawning reef built in this way, the attaching rate of hexagrammos otakii spawn can be effectively increased, and the fertilization rate, hatching rate and survival rate of the spawn are increased; a relatively safe space is provided for parent fish to improve the spawning protecting effect of the parent fish. The spawning reef is stable in structure and easy to manufacture, materials are easy to obtain and low in cost, due to the furcated open structure, incident flow resistance is small, the hatching area is large, no harm is caused to spawning parents, and the spawning reef conforms to the spawning and spawn protecting habits of hexagrammos otakii.

Description

technical field [0001] The invention relates to a spawning reef, in particular to a fork-shaped hexaline spawning reef. Background technique [0002] Dataki hexaline fish, also known as Oushi hexaline fish, hexaline fish, commonly known as yellow croaker, belongs to Scorpioformes, Hexaline family, and Hexaline genus, and is a cold-temperate offshore bottom rock fish. It is mainly distributed in the Yellow Sea and Bohai Sea of ​​China, and also found in the seas of North Korea, Japan and the Far East of Russia. This fish is resistant to low temperature and has a survival temperature of 2-26°C. It grows in the coastal rocky reef areas of Liaoning, Shandong and other places in China. Its tender meat and delicious taste are known as "Northern grouper". It has high economic value and is favored by consumers and farmers. Dataki hexalis is an ideal species for cage culture in northern China, and it is also an ideal species for fishery multiplication and release and development of...

AI Technical Summary

Problems solved by technology

At present, the construction of artificial spawning reefs is mostly extensive, that is, throwing waste ships directly into the sea, stones and concrete reefs with simple shapes are used as attachment bases for offshore fish, without considering the characteristics of different eggs and the behavior of broodstock. In particular, sticky eggs have high requirements on the spawning base. Therefore, in order to stabilize and expand the spawning grounds of Hexaline hexalis, and improve the multiplication effect of Hexaline hexalis, it is urgent to develop environmentally friendly spawning reefs and increase adhesion The resource replenishment amount of six-line fish eggs

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