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A single device for hatching eel fertilized eggs and cultivating newly hatched larvae

A single device and fertilized egg technology, which is applied to the single device for hatching eel fertilized eggs and cultivating newly hatched larvae, and the single device field for hatching eel fertilized eggs and cultivating eel newly hatched larvae, can solve the problem of heavy workload, larvae damage, etc. Water quality deterioration and other problems, to achieve the effect of simple structure

Active Publication Date: 2017-03-29
SHANGHAI OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to frequent operations, there is great damage to the larvae, and the deformity rate of the larvae is high. At the same time, because the eel larvae originally lived in the clean seawater of the ocean, the bait left at the bottom of the tank for a long time deteriorates the water quality, which also leads to the survival rate of the larvae. very low cause
Moreover, it is also a very arduous project to transfer all the eel fry to fresh water every day
At present, there is no relevant report on the cultivation device and its improvement method for newly hatched larvae in China. The applicant has obtained a large number of fertilized eggs and larvae of river eel through artificial reproduction through research on the facilities for incubating newly hatched larvae.

Method used

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  • A single device for hatching eel fertilized eggs and cultivating newly hatched larvae
  • A single device for hatching eel fertilized eggs and cultivating newly hatched larvae
  • A single device for hatching eel fertilized eggs and cultivating newly hatched larvae

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0128] 1. Device structure

[0129] The user gets as figure 1 The incubation device shown, as Figure 1-4 Shown, the table-shaped support 7 height of this device is 1m. The cylindrical part 11 of the body 1 has a diameter of 430 mm and a height of 300 mm; the lower part 12 of the body is one-third of a sphere with a diameter of 430 mm. The hole diameter of the water hole 13 at the lower end of the lower part 12 of the body is 50mm, and the first stepped pipe 22 connected to it through the intermediate pipe is a straight pipe with a diameter of 50mm to 20mm, and the first stepped pipe 22 is a three-way The pipe diameters of the connected water inlet pipe 21 and the sewage pipe 31 are both 20mm. The water injection pipe 41 is horizontally arranged at 5 cm on both symmetrical sides of the side wall above the connection between the cylindrical part 11 of the body 1 and the lower part 12 of the body. The pipe diameter of the water injection pipe 41 is 20mm, and the pipe diamete...

Embodiment 2

[0143] 1. Device structure

[0144] The user gets as Figure 5 The incubation device shown, as Figure 5-8Shown, the table-shaped support 7 height of this device is 1m. The cylindrical part 11 of the body 1 has a diameter of 240 mm and a height of 200 mm; the lower part 12 of the body is one third of a sphere with a diameter of 240 mm. The aperture of the water passage hole 13 at the lower end of the lower part 12 of the body is 50 mm, and the first stepped pipe 22 connected thereto through the connecting pipe is a straight pipe with a pipe diameter of 50 mm to 20 mm, and the first stepped pipe 22 is a three-way pipe. The pipe diameters of the connected water inlet pipe 21 and the sewage pipe 31 are both 20mm. The water injection pipe 41 is horizontally arranged at 5 cm on both symmetrical sides of the side wall above the connection between the cylindrical part 11 of the body 1 and the lower part 12 of the body. The pipe diameter of the water injection pipe 41 is 20mm, and...

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PUM

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Abstract

The invention provides a single device for hatching eel fertilized eggs and breeding newly-hatched fish fries. The single device comprises a body, a water feeding mechanism, a sewage discharging mechanism, water injecting mechanisms and water discharging mechanisms, wherein a water through hole is formed in the bottom of the body and is communicated with the water feeding mechanism and the sewage discharging mechanism through a first step pipe; at least one water discharging mechanism is arranged at the upper part of the body; two water injecting mechanisms are arranged at the lower part of the body. The invention also provides an application method and application of the single device for hatching the eel fertilized eggs and breeding newly-hatched fish fries. According to the single device for hatching eel fertilized eggs and breeding newly-hatched fish fries, a set of unique device suitable for hatching eel fertilized eggs and breeding newly-hatched fish fries is developed due to combination of arrangement principles of an eel hatcher and other biological hatchers; the device is simple in structure, low in cost, skillful in design, convenient to use and worthy of popularization and application.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and relates to a single device for hatching fertilized eel eggs and cultivating newly hatched larvae, in particular to a single device for hatching fertilized eel eggs and cultivating newly hatched eel larvae and its application. Background technique [0002] Eel is an important economic fish in my country. Due to the particularity of the life history of eel, its artificial reproduction has become a worldwide problem, and the seed required for artificial breeding has always been supplied by natural fishing. In recent years, the artificial propagation of Japanese eel has been widely concerned. In 2010, the Japanese Fisheries Comprehensive Research Center combined with the long-term pelagic ecological survey of Japanese eel, conducted a research on the breeding of parent fish, ripening, induced spawning, identification of high-quality eggs, eel breeding, etc. The key technologies are studied ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/17A01K63/04
CPCA01K61/00A01K61/17A01K63/003A01K63/04Y02A40/81
Inventor 刘利平王倩帅滇吴嘉敏
Owner SHANGHAI OCEAN UNIV