Screening purification and scale breeding method for thermocyclops

A technology of warm sword Daphnia and cultivation method, applied in the direction of climate change adaptation, fish farming, application, etc., can solve the problems of staying in natural reproduction, etc., and achieve the effects of moderate size, simple operation and good quality.

Active Publication Date: 2015-05-20
NINGBO UNIV
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Problems solved by technology

But so far, there are almost no major species of copepods that can be cultured productively in large quantities. ) can be cultivated at low density, and the cul

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  • Screening purification and scale breeding method for thermocyclops
  • Screening purification and scale breeding method for thermocyclops
  • Screening purification and scale breeding method for thermocyclops

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Specific embodiment

[0023] A method for screening, purification and large-scale cultivation of Daphnia vulgaris, capturing copepods from estuaries or breeding ponds at the junction of brackish water and freshwater; under set conditions, directional screening of Daphnia vulgaris is carried out; the cultivation of Daphnia vulgaris is optimized To carry out large-scale continuous cultivation under conditions, the specific steps are as follows:

[0024] (1) Germplasm acquisition: In the estuary or breeding pond at the junction of brackish water and fresh water, when the water temperature is 18-22℃ (usually the transition of spring and summer or late autumn), select the area with the specific gravity of water between 1.005-1.012 and use 120 mesh A trawl or fishing net made of sieve tulle, harvesting copepods at the surface of a water body of 30-50cm as a source of germplasm for screening;

[0025] (2) Directional screening: After cultivating the harvested copepods at a temperature of 2...

Example Embodiment

[0028] Example 1

[0029] A method for screening, purifying, and large-scale cultivation of Daphnia vulgaris, the specific steps are as follows:

[0030] (1) Germplasm acquisition: in the estuary or breeding pond at the junction of saltwater and fresh water, at a water temperature of 20℃, select an area with a water specific gravity of 1.008, and use a trawl or fishing net made of 120-mesh sieve tulle at the surface of a 40cm water body. Harvest the copepod population as a germplasm source for selection;

[0031] (2) Targeted screening: After cultivating the harvested copepod population at a temperature of 20°C, a salinity of 10, and a light intensity of 90 Lux for 6 days, raise the water temperature to 24°C and the salinity to drop to 8. After incubating for 4 days, Then return to the initial incubation condition temperature 20℃, salinity 10, light intensity 90 Lux and incubate for 6 days, that is to complete a cycle of directional screening, after completing at least one cycle of...

Example Embodiment

[0034] Example 2

[0035] Same as the above embodiment 1, the difference lies in:

[0036] In step (1), at the estuary at the junction of brackish and fresh water, at a water temperature of 18℃, select an area with a specific gravity of 1.005, use a trawl or fishing net made of 120-mesh sieve tulle, and harvest copepods at the surface layer of a 30cm water body Population as a germplasm source for screening;

[0037] In step (2), the harvested copepod population is cultivated for 7 days under the conditions of temperature 18℃, salinity 7 and light intensity 30 Lux, then raise the water temperature to 22℃, and the salinity drops to 7, and after incubating for 5 days, it will recover. Incubate for 7 days at the initial cultivation condition temperature of 18℃, salinity 7, and light intensity of 30 Lux, and then complete one cycle of directional screening. After completing at least one cycle of directional screening, the purebred E. occidentalis will be obtained. After incubating for...

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Abstract

The invention discloses a screening purification and scale breeding method for thermocyclops. The method is characterized in that copepods groups are captured from a river mouth on the border between salt water and fresh water or a breeding pond to serve as germplasm sources for screening; under the setting condition, the thermocyclops is directionally screened, and a thermocyclops population with a certain density is obtained by breeding; scale continuous breeding is carried out on the thermocyclops under the optimization breeding conditions that the temperature is 21.3 DEG C, the salinity is 12.46, and the light intensity is 65.6 Lux, two thirds of total thermocyclops individuals are caught every three days, and the fact that 90-100 thermocyclops individuals are bred in per liter water is formed through three weeks of breeding. The screening purification and scale breeding method for the thermocyclops has the advantages that purebred high density breeding can be carried out, the bred fleas biology living bodies are moderate in size, not only is full of nutrients and can be directly used as food sources, but also can be used as initial feeding of larvas such as economic fish, shrimps and crabs.

Description

technical field [0001] The invention relates to the technical field of agricultural aquaculture, in particular to a method for screening, purifying and large-scale culturing of Daphnia warmipes. Background technique [0002] Copepods are a class of small and low-level crustaceans. They generally live in planktonic life and are widely distributed in oceans, freshwater or brackish water. They are an important part of zooplankton in waters and an important part of food webs in waters. links. Because its different species are distributed in different seasons and have high nutritional value, it is the opening bait for the larvae of many economic animals when raising seedlings. Therefore, it is necessary to carry out the research on nutritional enhancement and large-scale cultivation of copepods. Carrying out research on nutrition enhancement and large-scale cultivation of copepods can not only provide basic bait for seedling bait research, but also provide scientific basis for ...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81A01K61/00
Inventor 王子晖徐永健李响刘肖岑牟金婷
Owner NINGBO UNIV
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