Seawater domestication and indoor high-density culture method of moina mongolica daday

A technology for high-density cultivation of Daphnia damascens, applied in chemistry, fish farming, climate change adaptation, etc., can solve the problem of high suitable temperature, reduce the cost of raising seedlings, and improve the survival rate of fry

Inactive Publication Date: 2007-09-19
DALIAN FISHERIES UNIVERSITY
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  • Abstract
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Problems solved by technology

[0003] At present, the Daphnia mongolica species researched and applied in domestic scientific research and production are all collected in 1982 from the salt ponds in Yuncheng area (South Shanxi) of Shanxi Province, and have been widely used in southern Fujian, Guangdong, Shanghai, etc. However, due to the relatively high temperature (25°C) for its cultivation, there has been no high-density cultivation of Daphnia mongolica with seawater (salinity 30-35) indoors during the breeding season (April-June) of northern seawater fish so far. Cultivate and utilize a large number of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Seawater acclimation adopts the following methods:

[0022] a. Collect the raw water from the inland salt lake (Shanxi or Inner Mongolia) and the salt lake to the container. The density of the Mogolia in the container is less than 100 / l. If long-distance transportation is required, the container mouth needs to be opened frequently to ensure Ensure sufficient oxygen in the raw water; if the long-distance transportation time exceeds 48 hours, it is necessary to feed chlorella;

[0023] b. Cultivate Daphnia mongolica in raw water, add filtered seawater to increase the salinity of the raw water by 1-2 per day, so that the salinity gradually reaches 30-35, the light intensity is 5000-7000lx, and the photoperiod L:D=12h: For 12 hours, the temperature was kept at 25-28°C, and the daphnia globosa (2 million / ml) cultivated in seawater was fed every day, and observed with the naked eye until the dana mongolicus could grow and reproduce normally, and seawater acclimation was compl...

Embodiment 2

[0031] a. Collect the Namona mongolica from the inland salt lake and the raw water of the salt lake into the container. The density of the Namona mongolica in the container is 100 / l. If long-distance transportation is required, the mouth of the container needs to be opened frequently to ensure sufficient oxygen in the raw water; long-distance If the transportation time exceeds 48 hours, it needs to be fed with chlorella;

[0032] b. Cultivate Daphnia mongolica in raw water, add filtered seawater to increase the salinity of raw water by 1 every day, so that the salinity gradually reaches seawater salinity (30-35), light intensity 5000-7000lx, photoperiod L:D =12h:12h, keep the temperature at 28°C, feed with small daphnia (2 million / ml) cultured in seawater every day, observe with the naked eye until the normal growth and reproduction of dama mongolica, and seawater acclimation is completed.

[0033] The indoor high-density cultivation of Mogolia mongolica adopts the following m...

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Abstract

The invention disclose a seawater domestication method for Moina mongolica Daday. The following is the concrete steps: sampling Moina mongolica Daday and original water in container, sampling density being less than 100 / l, culturing Moina mongolica Daday in original water, adding filtered seawater each day to promote salinity 1-2 to achieve 30-35, illumination intensity being 5000-7000lx, photoperiod L:D=12h:12h, temperature being 25-28 degree, feeding each day of chlorella (Two million / ml) cultured by seawater until the Moina mongolica Daday growing normally and propagating.to achieve 2000-5000 / l, taking the Moina mongolica Daday to micro flow water cultivation pool, using chlorella and yeast as continuous feeding feedstuff, illumination intensity being 5000-7000lx, photoperiod L:D=12h:12h, oxygen dissolution 6-8mg / l, water pH being 7-8. When the Moina mongolica Daday density is 15000-20000 / L, harvesting is carried out.

Description

Technical field: [0001] The invention relates to a seawater domestication and indoor high-density cultivation method of a saline Cladocera - Mogulina mongolica. Background technique: [0002] Moina mongolica Daday (Moina mongolica Daday) belongs to the subclass Cladocera of the Crustacea Branchiopoda, and is the only recognized saltwater daday in the Old World. The daphnia has the advantages of strong adaptability, rapid reproduction, high nutritional value, and contains a large amount of fish essential amino acids and highly unsaturated fatty acids. Practical results show that the fish (such as river fish) and river crabs that are fed with Diapa mongolica as bait grow fast and have a high survival rate, and their nutritional value to seawater fish is even higher than that of Artemia. Therefore, Diapa mongolica It is a kind of palatable live bait culture object of seawater fish and shrimp with great potential and a new type of marine environmental protection monitoring anim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00A61L2/18
CPCY02A40/81
Inventor 赵文何志辉
Owner DALIAN FISHERIES UNIVERSITY
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