Anti-damaged cuttlefish egg hatching and releasing device

Abstract

The invention discloses an anti-damaged cuttlefish egg hatching and releasing device. Therefore, hatched young cuttlefish can smoothly enter natural waters. Harmful organisms are effectively preventedfrom entering a hatching net box so that fertilized eggs are not damaged. The anti-damaged cuttlefish egg hatching and releasing device comprises a hatching mesh box and a floating-type anti-damagedcuttlefish egg hanging-mounted device. Fixed fine-mesh boards are arranged on the four side surfaces and the bottom surface of the hatching mesh box. The top surface of the hatching mesh box is made up of a coarse-mesh board. Additionally, the mesh diameter of each mesh of the coarse-mesh board is larger than that of each mesh of each fixed fine-mesh board. The floating-type anti-damaged cuttlefish egg hanging-mounted device comprises vertical guide rods, a floating fine-mesh board, buoyancy blocks and a cuttlefish egg hanging-mounted structure. The vertical guide rods are arranged on outer side surface of the hatching mesh box. The floating fine-mesh board elevates along the vertical guide rods and is located above the coarse-mesh board. The buoyancy blocks are arranged on an upper surface of the floating fine-mesh board. The cuttlefish egg hanging-mounted structure is arranged on the floating fine-mesh board.

Description

technical field [0001] The invention relates to the field of releasing squid, in particular to an anti-destructive squid egg hatching and releasing device. Background technique [0002] Mansoni squid is widely distributed along the coast of China and was once one of the traditional "four seafood" in the East my country Sea fishing grounds. With the overfishing over the years, the number of Squid mansoni has decreased significantly. By the middle and late 1980s, the squid mansoni in the coastal fishing grounds of Zhejiang could not form a fishing season and gradually disappeared. Multiplication and release is an effective means to increase the replenishment of fishery resources. Mansoni squid grows fast and has a short reproductive cycle, so it is an ideal species for multiplication and release. [0003] At present, the following two methods are usually used for the proliferation and release of squid: one is that the squid larvae are released directly; the other is that the ...

AI Technical Summary

Problems solved by technology

The needleless cuttlefish fertilized egg release device of this application is also equipped with fine nets on the inner side and inner bottom of the frame, and the top surface is provided with a coarse grid with an aperture larger than the fine net. The mesh of the coarse mesh plate is relatively small Large, the hatched young squid can swim out through the mesh of the coarse-mesh mesh plate and enter the natural sea area; it also has the shortcomings of the above-mentioned hatching cages

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