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Cultivating technology of Eriocheir sinensis megalopas in inland freshwater lake

A technology of Chinese mitten crab and megalopa, applied in fish farming, application, climate change adaptation, etc.

Inactive Publication Date: 2015-11-11
博湖县齐众生态水产养殖有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]Because the inland freshwater lake is deep inland, the distance is long, the climate is dry, the temperature difference between day and night is large, and the water temperature and water quality are quite different from other freshwater lakes. Most of the crabs are mainly raised by feeding young crabs directly. The cost of young crabs is high and the cost of long-distance transportation is also high; taking megalopa as an example when they are cultivated into young crabs in cages and stocked in the waters of Bosten Lake, although the problem of seedlings and crabs is solved. The problem of high transportation costs, but due to the inadaptability to water quality, temperature, environment and food, and after long-distance transportation, the survival rate of megalopa into juvenile crabs is low, and some are difficult to decompose into juvenile crabs, and the degeneration time is inconsistent. The size is uneven, which seriously affects the output and quality of commercial crabs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] At the beginning of May, prepare the cultivation pool in advance. The area of ​​the cultivation pool is 120 square meters, the depth is 1.5m, the slope of the cultivation pool wall is 1 / 3, and a drainage pipe is installed at the bottom of the cultivation pool; By adding 384kg of sea crystal, 48kg of magnesium chloride, 24kg of calcium chloride, and 24kg of potassium chloride, the salinity of the pool water is adjusted. The water temperature is 23°C, the pH value is 8, and the oxygen content is 5mg / L. The height of the pool after sterilization is 20-25cm. Hornwort and Gracilaria, covering 80% of the area;

[0023] In mid-May, when the water transparency of the pool reached 50 cm, the 6-day-old megalopa was transported by air. After arriving, the whole transport cage was immersed in the cultivation pool for 10 minutes, and then the dead and sick megalopa were picked out, and the healthy and lively megalopa were released. In the cultivation pond, the stocking density is 25...

Embodiment 2

[0027] Cultivation pool preparation: The depth of the cultivation pool is 1m, the slope is ?, there is a drain pipe at the bottom, after sterilization, water is injected, the water depth is greater than 60cm, the salinity of the pool water is adjusted at 4‰, the water temperature is 25°C, the pH value is 8.5, and oxygen The amount of water is 6mg / L, and the sterilized aquatic plants are placed in the pool 20 days in advance. The area covered by the aquatic plants is 75%, the height of the aquatic plants is 20cm, and the transparency of the pool water is 40cm;

[0028] Daily management of megalopa cultivation: transported 5-day-old megalopa, before entering the pond, first immerse the transport net cage in the cultivation pond for 5 minutes, and then put the megalopa into the cultivation pond, and the megalopa cultivation density is 20g / m3, without changing the water in the first 2 days after entering the pond, and feeding once every two hours, the total amount of food put in e...

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Abstract

The invention discloses a cultivating technology of Eriocheir sinensis megalopas in an inland freshwater lake and belongs to the field of aquaculture. The invention provides the cultivating technology of the megalopas of Eriocheir sinensis by controlling key steps such as culture pond preparation, sterilization and water quality regulation and daily management; by implementing the cultivating technology, the cultivated megalopas are low in cultivation cost, young Eriocheir sinensises are high in survival, consistent in transformation time, and neat in height and can be cultivated on a large scale.

Description

1. Technical field: [0001] The Chinese velvet crab -grained larvae cultivation technology in the inland freshwater lake belongs to the field of aquaculture technology, especially involving the cultivation technology of Chinese velvet crab large -eye larvae in the inland freshwater lake. 2. Background technology: [0002] Inland freshwater lakes are away from both the coast and the freshwater lake in the inland arid areas. Among them, the largest freshwater lake in China is the Bosteng Lake in Xinjiang.Larger; [0003] The big -eyed larvae MEGALOPA is the Metazea (Metazea), which is equivalent to shrimp and shrimp larvae.During the transition from floating to the bottom, many algae that can be discovered on drifting, because it has a large pair of large reunion to the end of the long eye handle and is named outside the eye socket.The shape of the big -eyed larvae is in the transitional stage between the larvae and the crab. The large -eye larvae already have a stronger ability to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 王志刚郑保红贺怀亮
Owner 博湖县齐众生态水产养殖有限责任公司
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