A method for improving the survival rate of released juvenile fish in the wild and a device for imitating a natural river channel model

Abstract

A method for improving the survival rate of released juvenile fish in the wild, the method comprising the following steps: constructing a natural channel model, and the device for simulating the natural channel model is arranged in sequence from top to bottom along the direction of water flow: feeding mode domestication area A, swimming ability domestication area B. Predator awareness domestication area C, natural river environment adaptation area D, and water surface feeding danger signal acclimation area E. A natural river channel model device for improving the survival rate of released juvenile fish in the wild, including a water storage tank and a return pool connected by a water pump, one end of the imitation natural river channel is connected to the water storage tank, and the other end of the imitation natural river channel is connected to the back water tank; water storage Pools, water pumps, backwater pools and imitation natural rivers form a circulation system with a certain flow rate. The invention provides a method for improving the survival rate of released juvenile fish in the field and a model device imitating a natural river course, which improves its adaptability in the field environment, thereby improving the survival rate after release.

Description

technical field [0001] The invention relates to a biological training method and a device used therefor, in particular to a method for improving the survival rate of released juvenile fish in the wild and a device imitating a natural river channel model. Background technique [0002] In the past 10 years, domestic fish artificial proliferation and release technology has become increasingly mature, and more and more indigenous fish have been released into their original habitats, providing technical support for the restoration of wild fish populations. The main released species There are protected species such as the four major domestic carps, Chinese sturgeon, mullet, golden-thread barb in Dianchi Lake, and various schizothorax. Domestic research in the field of multiplication and release mainly focuses on how to break through the technical research of artificial reproduction. The research on the cell biology of released fish is also relatively thorough, and it also involves...

AI Technical Summary

Problems solved by technology

However, considering the total number of released fish and the time span and difficulty of recapture, the recapture rate of the target fish is still very low, especially for the fish with poor environmental adaptability such as the long-breasted catfish. Unsatisfactory. Recently, cuttlefish and black carp have been successfully bred. Therefore, training these juveniles in a simulated natural environment before release can help them adapt to the environment in the natural wild state in advance, so that the released juveniles have a Adapt to the stage of environmental changes, lay the foundation for the survival of natural rivers in the later stage, thereby improving the survival rate of released juvenile fish

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