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Schizothoracinae fish fertilized egg incubation method

A fertilized egg and fish technology, which is applied in the field of fish fertilized egg hatching, can solve the development and promotion of artificial management and maintenance constraints of Schizothorax fertilized egg hatching technology, artificial hatching of Schizothorax fertilized eggs cannot achieve results, The effect of changing the environmental characteristics of the water body, the facility construction is simple and convenient, and the hatching efficiency is high

Inactive Publication Date: 2016-01-20
YANGTZE RIVER 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

[0003] Under natural conditions, the hatching of fertilized eggs of Schizothorax has certain requirements on water temperature, flow rate, and substrate. Cannot achieve the effect of natural hatching
The current hatching method of Schizothorax has strict requirements on the physical and chemical indicators of the water body, and any change in any indicator will have an irreversible impact on the hatching results
Complicated hatching technology and high-quality water sources, intensive hatching equipment, and a large amount of cost investment in manual management and maintenance have restricted the development and promotion of Schizothorax fertilized egg hatching technology

Method used

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Effect test

Embodiment 1

[0032] Attached below figure 1 The present invention is described in further detail:

[0033] A method for hatching fertilized eggs of Schizothorax, the steps are:

[0034] 1. Hatch site selection:

[0035] Guosheng River is one of the natural distribution rivers of Schizothorax, which is formed by the collection of clear spring water and snow water from Bailing Mountain. Every year from November to May of the next year is the dry season, and it is also the breeding season of Schizothorax (December to March of the next year). Since the water volume will increase dozens of times when the rainy season comes, a large number of wet and unspreading sandbars are left on the meandering river during the dry season. In this example, the incubation application is carried out in the channel of the Guosheng Township section of the Guosheng River.

[0036] During the dry season, the Guosheng River left a large amount of sediment in the river, and at the same time created a gentle grave...

Embodiment 2

[0048] Embodiment 2: below in conjunction with attached figure 2 The present invention is described in further detail:

[0049] A method for hatching fertilized eggs of Schizothorax, the steps are:

[0050] 1. Hatch site selection:

[0051] This experiment was carried out on the banks of the Guosheng River, a gentle area similar to an estuary delta formed by the erosion of mountain springs. The terrain is flat. After clearing the large rocks (diameter > 20cm), the bottom is mainly pebbles and fine sand. The bottom is about 4 or 5 or 6 cm thick sand. The amount of water is sufficient and stable, and the surrounding vegetation is dense, and most of the time there is no direct sunlight here.

[0052] 2. Hatchery construction:

[0053] In view of the sufficient amount of water, about 10 hatching pools with a side length of about 1.5m were established in series in two parallel rows in the creek formed by the mountain spring. The method for setting up the hatchery is the same...

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Abstract

The invention discloses a schizothoracinae fish fertilized egg incubation method. The method includes the steps that firstly, a hatchery is selected, wherein A, the hatchery should be built on a river beach or mountain spring water downstream bottomland; B, water source construction is carried out, and a sandbank is arranged in the middle of a selected riverway; C, a pollution discharge ditch is distributed, a water channel lower than the hatchery is dredge in an underground area of the hatchery, river water is reserved on an upstream diversion dam and used for the pollution discharge ditch; secondly, the hatchery is built, wherein A, a hatching pond is built; B, a sunshade facility is erected; thirdly, the fertilized egg incubation method is carried out; fourthly, management is carried out. The fertilized egg incubation method includes the steps that firstly, the water amount of the hatching pond is controlled and water quality requirements are met; secondly, after fertilizer eggs basically absorb water, the fertilizer eggs are evenly distributed in the pond and do not accumulate; thirdly, fry which are just incubated are temporarily bred on the spot till the fry start to eat, and the fry are recycled after flat swimming. The method is easy and convenient to use, cost is low, operation is easy and convenient, the semi-natural hatchery is built in the position of a natural riverway, and the requirement of incubation work of hundreds of thousands to millions of schizothoracinae fish fertilized eggs is met.

Description

technical field [0001] The invention belongs to the technical field of hatching fertilized eggs of fish, and more specifically relates to a method for hatching fertilized eggs of Schizothorax. Background technique [0002] Schizothorax is a group of cyprinids that are native to the Asian plateau, and are mainly distributed in plateau lakes and slow rivers. The body of Schizothorax is elongated, slightly flattened or almost cylindrical; the body is thinly scaled or bare, but there is a row of specialized large anal scales on both sides of the anus and anal fin, and the ventral scale between the two rows of anal scales A fissure is formed on the midline, hence the name Schizothorax. Schizothorax usually reaches sexual maturity at age 3 to 6, and males usually mature earlier than females. Breeding seasons are quite different due to different species. Most species spawn in large groups from March to May, some species start breeding as early as November, and some species can co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 颜文斌朱挺兵朱永久吴兴兵杨德国郭威胡文安
Owner YANGTZE RIVER FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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