Intermediate temporary rearing device for genetic breeding family of mudflat shellfish

Abstract

The invention discloses an intermediate temporary rearing device for a genetic breeding family of mudflat shellfish. An offspring seed pond comprises a living area with a circular groove, an inhabiting area being a beach and an isolation belt, and the beach is provided with a plurality of net cages; and the intermediate temporary rearing device is characterized in that each net cage comprises an annular base plate, a support rod in threaded connection with the annular base plate and a clamping groove formed in the annular base plate, and further comprises screen cloth with a horizontal zipper arranged on the side face, so that an operator can open the mesh cage conveniently to detect and check internal offspring seeds. Compared with the prior art, the rearing device has the advantages that the annular base plates and the screen cloth are arranged in a separable manner, when screen meshes are replaced periodically, the screen meshes can be replaced very conveniently and seamlessly, the height of the screen cloth can be adjusted at will through the arrangement of the support rods, rapid replacement operation during batch breeding is facilitated, and zipper openings which are horizontally opened are formed in the side of the rearing device, so that an operator can conveniently check and maintain the interior; and the device is simple in structure, reasonable and practical in design, and very suitable for being applied to breeding production of the artificial offspring seeds.

Description

technical field

[0001] The invention relates to the technical field of aquaculture, in particular to an intermediate temporary raising device for genetic breeding families of tidal flat shellfish. Background technique

[0002] Breeding of aquatic animal families has become one of the important means in selective breeding and an important way to improve the germplasm of aquatic animals.

[0003] During the family breeding of tidal flat shellfish, since the planktonic period of larvae is generally 6 to 12 days, metamorphosis occurs when the shell grows to 200-250 μm, and the short time is convenient for family selective breeding. After the metamorphosis of the larvae, because the juvenile shells are relatively small, they cannot be marked on their juvenile shells, nor can they be mixed. On the other hand, studies on the interim cultivation of tidal flat shellfish spat show that if the tidal flat shellfish spat with a shell length of 300-1000 μm are moved to the wild for inter...

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