Method for relieving stress response in manual operations of juvenile fish of sebastes schlegeli hilgendorf

Abstract

The invention relates to technology of relieving stress response of fish, in particular to a method for relieving stress response in the manual operations of juvenile fish of sebastes schlegeli hilgendorf. The method is characterized by firstly stopping feeding the juvenile fish of sebastes schlegeli hilgendorf for a day to ensure the food in the intestines and stomach of the fish to be emptied; computing the dose of the required isotopic ethyl aminobenzoate alkane sulfonate (MS-222) according to the concentration of 90-110mg / L and dissolving the isotopic ethyl aminobenzoate alkane sulfonate into seawater and stirring to fully dissolve the isotopic ethyl aminobenzoate alkane sulfonate; and then spooning the juvenile fish of sebastes schlegeli hilgendorf into the MS-222 seawater solution, carrying out various test operations when the fish lies at the bottom of a water tank three minutes later and moving the juvenile fish of sebastes schlegeli hilgendorf into common seawater after the operations are completed. The optimum range of the concentration of the seawater solution is 100mg / L. Obviously, the method brings great convenience for such manual operations as transportation, individual marking, immunization injection, physiological experiment and the like, is characterized in that the juvenile fish does not contract diseases, and is fast and safe.

Description

technical field [0001] The invention relates to a technique for alleviating the stress response of fish, in particular to a method for alleviating the stress response in the manual operation of juvenile fish of the flat scorpionfish. Background technique [0002] Sebastes schlegeli Hilgendorf (Sebastes schlegeli Hilgendorf), commonly known as blackhead and black fish, is an offshore reef-loving demersal fish, distributed in the western North Pacific Ocean, in my country's Bohai Sea, Yellow Sea and East China Sea, especially in the Yellow Sea and Bohai Sea. Xu's flat scorpionfish is large in size, delicate in meat quality, high in taste, wide in seed sources, strong in disease resistance, low temperature resistant, and fast in growth. However, this fish is lively by nature and is highly sensitive to external stimuli; it struggles and jumps strongly after leaving the water, and there are sharp spines on the dorsal fin, anal fin, and gill cover, which are very easy to stab each...

AI Technical Summary

Problems solved by technology

However, this fish is lively by nature and is highly sensitive to external stimuli; it struggles and jumps strongly after leaving the water, and there are sharp spines on the dorsal fin, anal fin, and gill cover, which are very easy to stab each other, and it is difficult for handling, transportation, individual marking, Manual operations such as immunization injections and physiological experiments have brought great difficulties

The above-mentioned operations are mostly carried out directly. The stress response of the flat scorpionfish not only makes various operations very inconvenient, but also causes surface injuries to the fish and induces diseases. redness, stinging

[0003] In addition, the stress response will inhibit the immune function of aquatic animals. Aquatic animals that are often in a state of stress have physiological dysfunction and are more likely to be infected with diseases.