A kind of medaka high-efficiency reproduction and hatching method

Abstract

The invention provides an efficient oryzias latipe breeding and hatching method. The efficient oryzias latipe breeding and hatching method comprises the steps that 1, parent fish pairing is performed according to the proportion of 18 females and 16 males; 2, spawning induction is performed, the light irradiation time is controlled to be 16 hours in the daytime and 8 hours at night, and the water temperature is controlled to be 24-27 DEG C; 3, artificial spawn taking performed; 4, hatching is performed in young oryzias latipe hatching boxes; 5, oryzias latipe fries are bred till the oryzias latipe fries grow to be mature sexually, then parent fish is selected again for execution of the step 1, operation is performed in cycles to form an oryzias latipe breeding and hatching circulation system, and a large number of oryzias latipe can be provided for water environment detection and zoological experiments in our country. The efficient oryzias latipe breeding and hatching method is good in breeding controllability and high in breeding efficiency and has high hatching rate and fry survival rate.

Description

technical field [0001] The invention relates to the technical field of animal and plant breeding, in particular to a method for efficient breeding and hatching of medaka fish. Background technique [0002] The development of biological testing methods in environmental monitoring in my country started relatively late. In recent years, many domestic researchers have realized the importance of using live animals to carry out drainage toxicity testing to protect the environment and improve water treatment processes, and related research work is increasing year by year. Medaka is an international medical fish, which is particularly sensitive to water quality and environmental changes. In recent years, it has been widely used as an experimental material for aquatic toxicology, and is also recommended by the International Standards Organization (ISO) as one of the standard fish for toxicity experiments. Now, because the mosquito fish and the medaka fish occupy the same ecological l...

AI Technical Summary

Problems solved by technology

Now, because the mosquito fish and the medaka fish occupy the same ecological level and have the same feeding habits, there is fierce competition in the living space, but the viviparous reproduction mode of the mosquito fish is superior to that of the medaka fish , the survival of the fittest in the breeding mode, coupled with the aggravation of environmental pollution, makes medaka fish less and less, and the wild is already on the verge of extinction. Therefore, how to realize the efficient reproduction and hatching of medaka fish has become a difficult problem at present.

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