Applicable to the device and method for hatching fertilized eggs and collecting larvae of Otaki hexaline

Abstract

The invention relates to the technical field of aquaculture, in particular to an oosperm hatching and larva collecting device and method suitable for hexagrammos otakii. The device comprises an impounding reservoir, a hatching pond, a larva collecting pond, a bolting-silk larva collecting net and a water return system. The impounding reservoir and the larva collecting pond are arranged at the twoends of the hatching pond respectively, and the impounding reservoir supplies water to the hatching pond through a water supply system. The larva collecting pond is communicated with the hatching pond, the bolting-silk larva collecting net is arranged in the larva collecting net and used for collecting larvae, and the water return system is used for conveying water in the larva collecting pond back to the hatching pond, and a water circulating system is formed. According to the oosperm hatching and larva collection device and method, it can be guaranteed that during hatching, the water temperature is stable, dissolved oxygen is sufficient, and running water stimulation exists all the time; the newly hatched larvae can directly enter the collecting device along with water flow, artificial interference is small, and operation is easy and convenient; the whole hatching device is easy to construct, demount and move.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a device suitable for hatching fertilized eggs and collecting larvae of Otaki hexalis and a method thereof. Background technique [0002] Hexaline fish usually refers to the fish of the family Hexalineidae, which belongs to the order Scorpioformes and the suborder of Hexaline fish, including the genus Hexaline and the genus Pleurotus. It is distributed in the seas of Japan, North Korea, the Russian Far East, and the Yellow Sea and Bohai Sea of ​​my country , is a cold-temperate offshore bottom rock fish. There are Otaki six-line fish, long-line six-line fish, cross-line six-line fish and spothead fish distributed in my country. Their meat is tender, delicious, and of high economic value. They are favored by consumers and farmers. It is an ideal species for box culture, and it is also an ideal species for fishery multiplication and release and development of recreational fisher...

AI Technical Summary

Problems solved by technology

[0004] In view of the problems referred to above, the object of the present invention is to provide a device and method suitable for the hatching of fertilized eggs and larvae collecting of Hexalogus dataki, so as to solve the problem that the original hatching facilities and techniques are difficult to form the required water flow and high dissolved oxygen for hatching. There are also many inconveniences in the collection method of newly hatched larvae, which may easily cause damage to fish eggs

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