Artificial spawning induction method for rhinogobio ventralis

Abstract

The invention discloses an artificial spawning induction method for rhinogobio ventralis. According to the method, the male and female proportion of mature parent fishes is 1:1.5; spawning induction medicine is lutropin releasing hormone analogies, and the dosage of the medicine is 6 micrograms per kilogram of fish weight; according to an artificial fertilization method, female fishes awaiting spawning are caught, moisture of fish bodies are wiped to be dry, ova are extruded into a dry container, then male fishes awaiting spawning are caught, genital openings are wiped to be dry, seminal fluid is sucked up through an injector, placed in a sperm dilution and then mixed with the ova, activation is performed by clear water, standing is performed for two minutes, and then fertilized ova are poured into an incubator for incubation; the flow speed of water bodies in the incubator before stripping of the fertilized ova is 0.4 m / s, the flow speed after stripping is 0.2 m / s, after stripping, the fertilized ova grow in the incubator until fish fry swim bladders are inflated, and then fish fry cultivation can be performed. The spawning induction rate is larger than 65%, the fertilization rate is larger than 85%, the incubation rate is larger than 80%, a large number of fish fries can be provided for batch production of the fish fries of the specification of rhinogobio ventralis, and therefore proliferation liberation of the rhinogobio ventralis is achieved.

Description

technical field [0001] The invention relates to artificial breeding technology for aquatic products, in particular to a method for artificially inducing labor of the albacore. Background technique [0002] Long-finned scorpion belongs to Cyprinidae, Cyprinidae, Sterinae, and scorpion. Commonly known as Tumoer and Yangyu, it is a unique species in the upper reaches of the Yangtze River. It is mainly distributed in the Jinsha River, the upper reaches of the Yangtze River, the Yalong River, the Min River, the Tuo River, the middle and lower reaches of the Jialing River and the lower reaches of the Wujiang River. Its individual is small and grows slowly, and it is generally classified as "small wild fish" in the previous fishing fishery of the Yangtze River. In recent years, due to changes in the ecological environment of the upper reaches of the Yangtze River, its resources have shown a downward trend. In order to protect this unique fish resource in the upper reaches of the Y...

AI Technical Summary

Problems solved by technology

The mass production of albacore seedlings is a prerequisite for its multiplication and release, but previous research on it in my country mainly focused on resource investigation and assessment, age and growth, biology and genetic diversity, and artificial breeding has not been carried out. Technical research work, the artificial propagation technology of albacores is currently the technical bottleneck for its multiplication and release, and artificial induction of labor is the key to artificial reproduction technology

[0003] The technology of artificial induced labor of albacores is still in the research stage. The main method adopted is to use the mature broodstock collected in the field to artificially induce labor immediately. There are many kinds of drugs and injection needles used for oxytocin, and the dosage is large. (Below 5%) and low fertilization rate, poor technical repeatability