Signing device and method for released fishes

Abstract

Provided is a signing device for released fishes. The device includes a linkage assembly, a bottom plate, a signing gun assembly and a fish body fixing assembly, wherein the linkage assembly includes a pressing rod, a central supporting shaft, a supporting part and a second external spring; the supporting part is installed on the bottom plate, the central supporting shaft is installed on the supporting part, and the pressing rod body is hinged to the central supporting shaft; the fish body fixing assembly is composed of an air-operated pulling part and a fish body clamping part, the air-operated pulling part and the signing gun assembly are installed on the both ends of the pressing rod respectively, the fish body clamping par connected to the air-operated pulling part is installed on the bottom plate, and the fish body clamping part is positioned below the signing gun assembly; the both ends of the second external spring are installed on the pressing rod and the supporting part respectively. According to a signing method for the released fishes, the device is adopted for binding signboards on the released fishes. The signing device and method for the released fishes have the advantages of improving precision of binding the signboards, reducing falling rates of the signboards inside the bound fish bodies, decreasing damage caused on human and fishes by misoperation and the like, and belong to the field of experimental tools for aquatic products.

Description

technical field [0001] The invention belongs to the field of aquatic experiment tools, and in particular relates to a marking device for releasing fish and a marking method for releasing fish. Background technique [0002] Mark release technology is a technology and method for studying fish migration, migration routes and fish resources. By marking fish bodies and releasing them, and then regularly recapturing and recording the marked fish, it is possible to infer the status of the released fish. The relevant information such as moving route, migration range and speed can achieve the purpose of monitoring fish dynamics. At present, the in-vitro tagging method is a commonly used fish marking method, that is, the marking plate is inserted into the back of the fish body by physical methods for body-piercing marking. [0003] At present, the hand-held marking tool is widely used in the market. Although this tool is portable, it requires the operator to hold the fish in one hand...

AI Technical Summary

Problems solved by technology

[0003] At present, the hand-held marking tool is widely used in the market. Although this tool is portable, it requires the operator to hold the fish in one hand and the gun in the other hand during the fish marking process. The marking parts of the fish need to be manually selected. It is easy to cause the mark to fail due to improper selection of marking parts, or too high to cause the sign to fall off, or too low to drive into the internal organs of the fish, resulting in the death of the marked fish, etc. In addition, artificially holding the fish for marking has certain dangers. It is very easy to accidentally injure the operator in the process of piercing the spear head through the fish body

In terms of sign boards, because the size cannot be too large to cause a burden on the sign fish, currently there are more sheet-shaped, tubular, strip-shaped sign boards, etc., because the surface area of ​​the sign boards is too small to print characters, or only printed with Contact simple information such as telephone contacts, which brings a lot of inconvenience to the follow-up capture work

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