Method to increase the number of females in the field cultured forest frog population

Abstract

The invention provides a method for increasing the number of females in the field cultured Rana population, including the construction of embryonic development ponds, tadpole development ponds, drying ponds and waste water recovery ponds, early embryonic development, late embryonic development, early tadpole development and later tadpole development. Required water environment pH value, salinity, alkalinity, H 2 CO 3 Concentration, Ca 2+ / Mg 2+ Ratio, Ca 2+ +Mg 2+ The total concentration and Na + / K + Determination and allocation of ratio, adjustment of suitable water temperature and recycling and reuse of waste water. Adopting the method of the present invention, the ratio of the number of females in the cultured Rana population of wild ecological ditch sealing is 62.75%, which is 19.56% higher than the ratio of the number of females in the natural Rana population, and the annual average recapture number of female Rana is increased by 69.98% %, the average proportion of females in the cultured Rana population captured each year is 65.68%. It is an important technology for the industrialized high-efficiency breeding of Rana.

Description

technical field [0001] The invention belongs to the technical field of wild animal breeding, and relates to a method for increasing the number of females in a field breeding Rana population. technical background [0002] Chinese forest frog (Ranachensinensis) is an important wild economic frog in my country, and it is distributed in some northern provinces (regions) mainly in the Changbai Mountains. Long-term over-fishing has led to a sharp decline in wild resources. It has been included in the "China Red Book of Endangered Animals" and is a national second-class wild animal protection. Rana is an economic frog that has both meat, medicine and health care. In recent years, the cultivation of Rana has been carried out in various places. The number and output of the cultured Rana population have increased significantly. The annual output of Jilin Province alone has reached more than 800 million. The output value exceeds 2 billion yuan. Practice has shown that the economic, s...

AI Technical Summary

Problems solved by technology

However, the female wood frog obtained by the estrogen induction method has lost the ability to lay eggs, and the reproductive ability of the male wood frog has also declined significantly. Resource retention is both unfavorable

[0008] The above "low temperature induction method", "ion induction method" and "estrogen induction method" have not been widely used in production, so that there is still a lack of a female induction method with strong operability, stable effect and beneficial to the increase of population To guide the industrialization and high-efficiency breeding of Rana

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