A kind of artificial low-salt seedling raising method of four-fingered horsefin

An artificial technology of four-fingered horsefin, which is applied in the field of artificial low-salt seedling breeding of four-fingered horsefin, can solve the problems of increasing the difficulty of raising fish fry and seedling death, and achieve good growth and development of larvae, high survival rate, and sustainable growth. Strong promotional effect

Inactive Publication Date: 2018-07-27
SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the later low-salt domestication process, a certain proportion of seedlings will die, which will increase the difficulty of fry breeding

Method used

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  • A kind of artificial low-salt seedling raising method of four-fingered horsefin
  • A kind of artificial low-salt seedling raising method of four-fingered horsefin
  • A kind of artificial low-salt seedling raising method of four-fingered horsefin

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The four-finger horsefin artificial low-salt seedling raising method provided by the present embodiment comprises the following steps:

[0037] (1) Preparation of hatching barrels, indoor seedling ponds and outdoor earthen ponds

[0038] Preparation of hatching buckets, indoor seedling ponds and outdoor seedling earthen ponds: the hatching barrels are made of commercial plastic material, and the recommended volume is 2m 3 The indoor seedling pond is a cement pond with a size of about 8m×6m×1.5m. Several spares are in the seedling cultivation workshop. The outdoor earthen pond has an area of ​​1-3 mu and a water depth of 1.2-1.5m. Large, the bottom of the pond is flat, the silt should be less than 5-10cm, there should be a source of brackish water nearby, and there should be a water wheel agitating aerator in the earthen pond.

[0039] The above-mentioned equipment was sprayed evenly with a strong chlorine solution with a concentration of 2 mg / L in the hatching bucket a...

Embodiment 2

[0079] The four-finger horsefin artificial low-salt seedling raising method provided by the present embodiment comprises the following steps:

[0080] (1) Preparation of hatching buckets, indoor seedling ponds and outdoor earthen ponds

[0081] The No. 1 incubator (volume 2m 3 ) and No. 7 seedling pond (8m×6m×1.5m) for low-salt domestication experiment.

[0082] On June 1, 2015, a strong chlorine solution with a concentration of 2mg / L was evenly sprinkled in the hatching buckets and nursery ponds for thorough disinfection.

[0083] (2) Water treatment for seedling cultivation

[0084]On June 5, 2015, natural seawater was introduced, filtered through coarse sand, fine sand, activated carbon, and sieves, and then pumped to a high-level reservoir (8m×8m×3m) for 24-48 hours of dark precipitation before chemical and physical treatment , Specifically, thoroughly disinfect with 5ppm of strong chlorine essence, neutralize with 2.5ppm of sodium thiosulfate after 24h, and finally ir...

Embodiment 3

[0121] The four-finger horsefin artificial low-salt seedling raising method provided by the present embodiment comprises the following steps:

[0122] (1) Preparation of hatching buckets, indoor seedling ponds and outdoor earthen ponds

[0123] The No. 2 incubator (volume 2m3) and the No. 6 nursery pond (8m×6m×1.5m), the No. 2 bait pond (1.5 mu) and the No. 5 soil pond in the outdoor area B of the seedling cultivation workshop were selected for this seedling cultivation. (3 mu) for low-salt domestication experiments.

[0124] (2) water treatment for raising seedlings and (3) bait ponds are prepared with embodiment 2.

[0125](4) Seed source and distribution

[0126] 4.1 Hatching and seedling preparation

[0127] On July 12, 2015, the pretreated seawater was introduced into the hatching tank with a water depth of 1.3m, and the salinity was measured with a YSI55-12 portable dissolved oxygen meter. According to the production requirements, the hatching salinity was adjusted to...

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Abstract

The invention discloses an artificial low-salt fry breeding method for eleutheronema tetradactylum. The method includes the following steps of 1, fry incubation, wherein fertilized ova obtained after natural spawning and insemination of parent fishes are selected to be incubated in natural seawater; 2, low-salt domestication, wherein low-salt domestication includes a first stage of fry low-salt domestication treatment, a second stage of fry low-salt domestication treatment and a third stage of fry low-salt domestication treatment. According to the fry breeding method, fry are subjected to low-salt domestication in the larval and juvenile period, and therefore the death rate of the fry can be reduced, and fry breeding work is simple and feasible.

Description

technical field [0001] The invention belongs to the technical field of seawater fish seedling cultivation, and in particular relates to an artificial low-salt seedling cultivation method for four-fingered horsefin. Background technique [0002] Four-fingered horsefin (Eleutheronema tetradactylum), belonging to the ray-finned fish class, Perciformes, horsefin family, four-fingered horsefin, is distributed in the Indian Ocean and the western Pacific Ocean, and is a shallow seabed fish. Its meat is tender and delicious, and it grows rapidly. Fast, is an important coastal economic fish in my country. In recent years, due to the sharp decline in sea-catch resources and the large market demand, the artificial breeding of four-fingered horsefin has great prospects, and there is a lot of room for development in pond culture, cage culture, factory culture and other fields. But my country has just started in artificial breeding of four-finger horsefin, mainly because the problem of ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/10
CPCA01K61/00Y02A40/81
Inventor 王鹏飞区又君谢木娇温久福李加儿周慧刘奇奇
Owner SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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