Method for increasing survival rate of wild schizothorax biddulphi in the manner of pond culture

Abstract

The invention discloses a method for increasing survival rate of wild schizothorax biddulphi in the manner of pond culture. The method comprises following steps: loading water in an oxygen bag, adding 10% of povidone-iodine solution in proportion, putting unwounded or slightly-wounded schizothorax biddulphi into water of the oxygen bag according to the packing specification, oxygenating, sealing an oxygen bag mouth, and soaking; loading water in another oxygen bag, adding penicillin and streptomycin for veterinary use in proportion, putting soaked fish into the oxygen bag according to the packing specification, oxygenating, and sealing the oxygen bag mouth; opening oxygen bags, putting fish into a storage pond for one day, diluting with 10% of povidone-iodine solution and water splashing the whole pond after restoring normal activities of fish till wounds are healed and putting fish into the pond for culture. The method for increasing survival rate of wild schizothorax biddulphi in the manner of pond culture has following beneficial effects: survival rate of wild schizothorax biddulphi during long-distance transport is increased; egniasis is avoided during breeding; and survival rate of wild schizothorax biddulphi during domestication in the pond is improved.

Description

technical field [0001] The invention relates to the field of cultivating wild Schizothorax, in particular to a method for improving the survival rate of wild Tarim Schizothorax cultured in ponds. Background technique [0002] Tarim Schizothorax belongs to Cyprinidae, Cyprinidae, Schizothorax subfamily, Schizothorax subgenus, Schizothorax subgenus, commonly known as sharp-billed fish. It is a unique species in the Tarim River Basin and is a relatively large economic fish. In the 1950s and 1960s, this fish accounted for 80% of the fishery production of Bosten Lake. Due to many factors, the "China Red Book of Endangered Animals" listed Tarim Schizothorax as an endangered species in 1998; in 2004, Tarim Schizothorax was listed as Class II protected aquatic wild species in Xinjiang Uygur Autonomous Region. [0003] For a long time, the relevant units and departments of the Xinjiang Uygur Autonomous Region have tried many times to domesticate and breed this fish, but the survival...

AI Technical Summary

Problems solved by technology

However, because the Tarim Schizothorax is only slightly distributed in the upper reaches of high altitudes, the number of individuals obtained by this method is extremely limited, and less than 3-5 fish are collected a year

[0005] After 5 years of research, it was found that there are three reasons for the low survival rate of wild Tarim Schizothorax transferred to pond culture: First, Tarim Schizothorax is only slightly distributed in the upper reaches of the river with high altitude and low water temperature, and the transportation is extremely inconvenient , the mountain road is rugged, fishing and transportation basically have to go through several twists and turns, and the stress response of the fish is strong, which is easy to cause fish injury and physical decline; second, during the long-distance transportation, the fish secretes a large amount of mucus and excrement. The water in the bag contains a large number of bacteria. After the action of the bacteria, the water temperature rises, causing the fish to die due to unsuitable water temperature; third, when fishing Tarim Schizothorax, the living environment of the fish and the water temperature of the breeding environment in the pond Most of the time, it is 12-19°C. This water temperature range is the best temperature for the growth of saprolegnia. Injury to the fish body is a prerequisite for saprolegnia infection. Therefore, wild Schizothorax will be infected with saprolegnia in large quantities soon after they are transported to the pond. die