Odontobutis obscura parent fish nursing propagation method

A kind of sand pond snakehead and fish breeding technology, which can be used in fish farming, application, climate change adaptation, etc., and can solve problems such as long incubation time, unsatisfactory hatching rate, and susceptibility to mold infection

Inactive Publication Date: 2016-12-14
CHANGSHU INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for nursing and breeding of sand pond snakehead broodstock, aiming to solve the problems of long hatching time of sand pond snakehead fertilized eggs, susceptibility to mold, and unsatisfactory hatching rate when sand pond snakehead is artificially propagated

Method used

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  • Odontobutis obscura parent fish nursing propagation method

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Effect test

Embodiment 1

[0024] The method that the parent fish of sand pond snakehead provided by the invention takes care of and breeds, and the specific realization process is:

[0025] 1. Select broodstock and prepare fish nests for spawning: From November to March of the following year, select adult fish from different sources as breeding fish. Requirements for breeding fish: fish body is healthy, lively and vigorous, female fish more than 70g, male fish more than 100g, The ratio of male to female is 1:1.5; the fish nest for spawning is homemade from mussel shells (15cm*30cm*8cm), with one side opening or a PVC pipe with a diameter of 12cm and a 30cm long end sealed with a mesh; the cement spawning pool Put 1-2 fish per square meter, produce ovaries for 1 / 2-2 / 3 of the amount of fish, lay the ovaries on the bottom of the pool or hang them at a distance of 5-10cm from the bottom of the pool. Control the water temperature at 20-22°C, and increase oxygen for 24 hours.

[0026] 2. Care of the male fi...

Embodiment 2

[0030] 1. Select broodstock and prepare to produce ovaries: In late November, select adult fish from different sources as breeding fish. Requirements for breeding fish: fish body is healthy, lively and vigorous, female fish should be more than 70g, male fish should be more than 100g, and the ratio of male to female should be 1: 1.5; Fish nests for spawning are clam shells and self-made (15cm*30cm*8cm) fish nests with only one side opening; the cement spawning ponds are filled with 2 fish per square meter, and the spawning fish nests are 2 / 3 of the amount of species of fish, the fish nest tiles the bottom of the pool or hangs at 10cm from the bottom of the pool. Control the water temperature at 21°C and increase oxygen for 24 hours.

[0031] 2. Care of the male fish in the fish nest with eggs: the eggs of the sand pond snakehead are sinking and adhesive eggs, and the fish nest with egg masses and the nursing male fish are moved together to the hatching pond for the male fish to...

Embodiment 3

[0035] 1. Select broodstock and prepare fish nests for spawning: in the first ten days of February of the following year, select adult fish from different sources as breeding fish. Requirements for breeding fish: fish body is healthy, lively and vigorous, female fish more than 70g, male fish more than 100g, the number of male and female fish The ratio is 1:1.5; the fish nest is a PVC pipe with a diameter of 12cm, the length is 30cm, and one end is sealed with a mesh; the cement spawning pond is filled with 1 fish per square meter, and the fish nest is 1 / 2 of the amount of fish, and the fish nest is tiled The bottom of the pool or hang at 5cm from the bottom of the pool. Control the water temperature at 20°C and increase oxygen for 24 hours.

[0036] 2. Nursing of the oviparous male fish with eggs: Sand pond snakehead eggs are sinking and adhesive eggs, and the oviparous and nursing male fish with egg masses are moved to the hatching pond for the male fish to nurse and hatch, a...

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Abstract

The invention discloses an odontobutis obscura parent fish nursing propagation method. The nursing propagation method includes the steps that odontobutis obscura adult fish from different sources are selected as the parent fish from November to March in the next year, and fish nests for spawning are prepared; the fish nests with egg clusters and nursing male fish are moved to an incubation pond, and the male fish are used for nursing incubation; the male fish are moved from the egg clusters with eyespots, and the egg clusters are incubated in a concentrated mode; concentrated culture management is carried out on young fish. The nursing characteristics of the odontobutis obscura male fish are used, the odontobutis obscura male fish are made to nurse oosperm development until eyespots appear, the male fish are moved 3-5 days before incubation, the egg clusters are taken out to be concentrated artificial incubation, it is avoided that oosperms are infected with mold to die massively, the oosperms in the same development stage can be selected and incubated in a concentrated mode, it is effectively ensured that fry emergence is uniform, which is beneficial for culture management on fry, the oosperm incubation rate and the survival rate of fry culture are effectively increased, and the problems that at present, during artificial propagation of odontobutis obscura, odontobutis obscura oosperms are long in incubation time and prone to mold infection, and the incubation rate is not ideal are solved.

Description

technical field [0001] The invention belongs to the technical field of fish artificial reproduction, and in particular relates to a method for nursing and breeding of sand pond snakehead broodstock. Background technique [0002] Sand pond snakehead is a small low-dwelling freshwater fish. It is deeply loved by consumers in Jiangsu, Zhejiang and Shanghai, and its market price remains high. [0003] At present, a breakthrough has been made in artificial breeding, but in the artificial breeding of sand snakehead, because the hatching time of the fertilized eggs of sand pond snakehead is long, it is easy to be infected with mold, which affects the hatching rate. Contents of the invention [0004] The purpose of the present invention is to provide a method for nursing and breeding of sand pond snakehead broodstock, aiming to solve the problems of long hatching time of fertilized eggs of sand pond snakehead, susceptibility to mold, and unsatisfactory hatching rate when sand pond...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81A01K61/00
Inventor 徐建荣韩晓磊张禹宁祖露顾楠孔得现陈中伟
Owner CHANGSHU INSTITUTE OF TECHNOLOGY
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