Field bionic hatching method of fertilized salmon eggs

Abstract

The invention discloses a field bionic hatching method of fertilized salmon eggs and belongs to the technical field of salmon breeding. A hatcher comprises a first side plate, a second side plate and nylon bolts. The first side plate and the second side plate can be symmetrically fastened to each other and are provided with nylon bolt plug holes which are symmetric; after symmetric fastening, the first side plate and the second side plate are fixed through nylon bolt plugs; the first side plate and the second side plate are both evenly provided with egg carrier cells in diamond shapes; the egg carrier cells of the first and second side plates are symmetrically fastened; the center of each egg carrier cell of the first side plate is provided with an escape hole; one corner of each egg carrier cell, on the same side, of the second side plate is provided with another escape hole. The hatcher can sink well in water, has stable shape and structure, allows smooth passage of water and allows water flow to be evenly distributed; the hatcher has the advantages that the size is small, materials are easy to obtain and assembly is simple; egg survival rate is up to greater than 70%.

Description

technical field [0001] The invention belongs to the technical field of salmon reproduction, in particular to a method for bionic hatching fertilized salmon eggs in the wild. Background technique [0002] Salmon generally refers to salmonids, which inhabit cold water rivers and have high economic value and research value. In nature, some salmonid parents (mother) reproduce by fanning their fins to build nests with constant water flow for their offspring in the gravel layer at the bottom of the water, then naturally lay eggs and fertilize them in the nests, and use their fins to move the gravel to cover the fish nests. The habit of laying eggs and hatching as nests or nests helps to protect the development and survival of offspring embryos. Salmon embryo hatching should be in an environment with suitable water flow, dim light or darkness. For example, the eggs of salmon and trout are large and heavy, and the fertilized eggs of salmon need a daily accumulated temperature of 2...

AI Technical Summary

Problems solved by technology

This kind of incubator meets the requirements of the biological characteristics of salmon hatching. It can be combined with multiple units to ensure the number of hatching. By selecting a suitable place in the river, it can partially artificially control and manipulate the hatching environment to solve the problem of low natural spawning hatching rate of wild salmon. problems, to achieve the purpose of safe incubation

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