A kind of method of bullhead seabream batch breeding

A technology of tau bream and utensils, which is applied in the application, climate change adaptation, fish farming and other directions, can solve the problems of prolonged spawning cycle, decreased annual spawning amount, fish egg destruction, etc., and achieves high hatching survival rate and fish fry yield. The effect of large and guaranteed survival rate

Active Publication Date: 2021-08-10
PEARL RIVER FISHERY RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this breeding method are: ① the broodstock lay eggs at any position on the bottom of the pond, and cannot be collected in a directional way for artificial hatching; ② after the fish are hatched and released from the mouth of the broodstock, it is easy to be caught by other fish or predators. Swallowing, and there is a lack of palatable bait for fry in the cement pond, and the survival rate is extremely low; ③Every time you collect fry, you need to pull all the broodstock in the pond to the net, and then check whether the broodstock contains fry one by one, so it will disturb the broodstock for at least three or four days It can return to normal, resulting in the prolongation of the spawning cycle and the decrease of the annual egg production; ④ Pulling the net will cause great damage to the hatching fish eggs, and at the same time cause serious damage to the subsequent reproductive physiology of the broodstock of the fish eggs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Implementation place: Ornamental fish base of Pearl River Fisheries Research Institute of Chinese Academy of Fishery Sciences

[0029] Implementation time: April to October of a certain year

[0030] Equipment preparation:

[0031] Spawning pond: Rectangular mud pond with an area of ​​180m 2 , the water depth is 1.1m, the average thickness of the silt is 13cm; the pH is 7.2, and the water temperature in the middle and lower layers of the water body is 26°C in late April.

[0032] Egg-attached utensils: Choose a flat-bottomed ceramic casserole with a diameter of 13cm, tie a string at the ear of the casserole, and extend the other end of the string to the edge of the pool. The distance between two adjacent casserole pots is 1.5±0.2m, and a total of 36 casserole pots are put into them.

[0033] Incubation tank: the bottom area of ​​the hatching tank is ≥0.2m 2 , the water storage depth is 0.2m, no direct sunlight, more than 90% of the light is shaded with a covering (w...

Embodiment 2

[0048] Implementation place: Kaiping base of Beijing Yujing Biotechnology Co., Ltd.

[0049] Implementation time: April to October of a certain year.

[0050] Equipment preparation:

[0051] Spawning pond: Rectangular mud pond with an area of ​​96m 2 , the average water depth is 1.0m, the average thickness of the silt is 12cm; the pH is 7.2, and the water temperature in the middle and lower layers of the water body is 25°C in late April.

[0052] Egg-attached utensils: Choose a flat-bottomed ceramic casserole with a diameter of 13cm. A string is tied to the ears of the casserole, and the other end of the string extends to the edge of the pool. About 80cm, the distance between two adjacent casserole pots is 1.5±0.2m, and a total of 24 casserole pots are put into it.

[0053] Incubation tank: the bottom area of ​​the hatching tank is ≥0.2m 2 , the water storage depth is 0.4m, no direct sunlight, more than 90% of the light is shielded with a covering (wooden board, black clot...

Embodiment 3

[0069] Implementation site: Lishui Fish Pond Base, Nanhai District, Foshan City

[0070] Implementation time: April to October 2014.

[0071] Equipment preparation:

[0072] Spawning pond: Rectangular mud pond with an area of ​​90m 2 , the water depth is 1.0-1.1m, the average thickness of the silt is 11cm; the pH is 7.0, and the water temperature in the middle and lower layers of the water body is 25°C in late April.

[0073] Egg-attached utensils: Choose a bottomless pottery bowl (or ceramic flowerpot, earthen pot) with a diameter of 20cm, tie a thin string to the side of the pottery bowl, and extend the other end of the string to the edge of the pool, and buckle the pottery bowl on the At the four corners of the bottom of the pool and the four sides of the pool, the pottery bowls are about 80cm away from the edge of the pool, and the distance between two adjacent pottery bowls is 1.1-1.3m. A total of 33 pottery bowls were put in.

[0074] Incubation tank: the bottom area ...

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PUM

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Abstract

The invention discloses a method for mass breeding of bullhead seabream. A pond with mud at the bottom of a soil pond is used as a spawning pond, and a flat-bottomed ceramic container turned upside down on the bottom of the pond is used as an egg attachment device, and is selected and stocked in a suitable temperature season. Broodstock, with an appropriate ratio of male to female, then hatch the fertilized eggs in an aquarium sheltered from light, and the fry are cultivated in the fish tank. The method of the present invention has the technical characteristics of high spawning rate, high hatching survival rate, less fry loss from hatching, large fry output, simple operation process and easy implementation, and is applicable to half-mouth hatching fish and slate-spawning fish. Large-scale production of fry.

Description

technical field [0001] The invention belongs to the field of aquatic breeding, in particular to a method for mass breeding of bullhead seabream. Background technique [0002] The bullhead seabream belongs to the cichlid family of the order Perciformes and is a common species of tropical ornamental fish. The body shape of this fish is approximately oval, with flat sides. The male fish has a protruding head and a bright blue-green metallic luster. The female fish is grayish brown, and the scales are less reflective. The adult male fish is larger than the female fish. The bullhead seabream is native to South America and lives in the tropical rainforest environment. It is omnivorous and adapts to a water temperature of 20-32°C. The reproductive habits of bullhead seabream are as follows: the time of first sexual maturity is 10-12 months, the first sexual maturity of male fish is 12-13cm in length, and the first sexual maturity of female fish is 10-11cm in length. Eggs are laid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/10A01K61/17
CPCA01K61/10A01K61/17Y02A40/81
Inventor 汪学杰牟希东宋红梅刘奕顾党恩罗渡刘超胡隐昌
Owner PEARL RIVER FISHERY RES INST CHINESE ACAD OF FISHERY SCI
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