Totally artificial breeding method for Coilia ectenes

Abstract

The invention relates to a totally artificial breeding method for Coilia ectenes, belonging to the technical field of fish culture. The method is characterized by comprising the following process steps of parent fish source; parent fish select breeding comprising standing / flowing water combined reinforced breeding; artificial induced spawning measure comprising parent fish selection, semen collection, dug roe inspection, induced spawning water temperature confirmation, parent fish matching, hormone injection, artificial insemination and the like; microflow water incubating; and summer flower and fish fry breeding. The invention promotes the parent fish sex gland to grow to maturity and ovulate by measures of reinforcing parent fish nutrition reinforced breeding, feeding hormone, flowing water stimulating and regulating and the like and normalizes the artificial induced spawning and insemination process, originally creates a simple flowing water incubating device of a pelagic egg and reinforces the management and ecological regulation of incubation period, thereby effectively solving the technical problems of artificially breeding Coilia ectenes. The induced spawning rate of artificial breeding is 33 percent, the fertilization rate is 48 percent and the hatching rate is 44 percent.

Description

technical field [0001] The invention relates to a breeding method for anadromous fish, in particular to a fully artificial breeding method for anchovy, belonging to the technical field of fish breeding. Background technique [0002] Coilia nasus belongs to the genus Coilia nasus, also known as long-jawed coilia, commonly known as "saury", "hair fish", and "shaving fish". Known for its tender meat and delicious taste, it is a rare migratory fish that enjoys the reputation of one of the "three delicacies of the Yangtze River". [0003] In recent years, due to the influence of many factors such as overfishing and the deterioration of the ecological environment, the resources of the anchovy have declined sharply, while the market demand has continued unabated, and even reached the dilemma of having a price but no market. The market price of the standard anchovy is as high as 6,000 yuan / Kg. Therefore, it is of great significance to break through the artificial breeding of the c...

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Problems solved by technology

Beginning with Yuan Chuanmi and Qin Anji, domestic scholars who paid attention to the ecology of the anchovy in the Yangtze River earlier in China, then in 1973, the Fish Research Group of the Department of Biology of Nanjing University, the Yangtze River Fisheries Research Institute of Hubei Province, the Fishery Science Research Institute of Jiangsu Province, and the Yangtze River Fisheries Research Group of Anhui Province The fishery survey team and the Hunan Provincial Institute of Fishery Sciences formed a collaboration group for the investigation of the resources of the anchovy in the Yangtze River Basin, focusing on the ecological investigation and research on the reproductive migration, gonad development, and spawning ground distribution of the anchovy; Zhu Dongliang from the Freshwater Fisheries Research Center In 1974 in Poyang Lake, Jiangxi Province, the natural reproductive conditions of the anchovy were investigated and the embryonic development process was observed; however, 30 years later, due to the change of the ecological environment of the Yangtze River, the ecological habits and germplasm of the anchovy have also changed. The findings of the survey and research are far from the status quo

In recent years, many scientific research institutes have set up projects to carry out research on the artificial reproduction of scorpion anchovy, which cost a lot of money. They have been looking for a method similar to the four major family carp by capturing wild male and female fish for artificial insemination and then cultivating them to solve the problem of seedlings. However, there have been repeated failures and no successful examples

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