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Preparation method of seawater for field shellfish unicellular alga culture

A technology of single-cell algae and seawater, which is applied in the field of cultivation of wild shellfish single-cell algae, and achieves the effects of low cost, good application prospects, and easy operation

Inactive Publication Date: 2014-12-10
EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Filter-feeding shellfish are only selective in the size and quality of the food when feeding, but not in the food value

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Seed conservation culture:

[0020] 1. Seawater precipitation

[0021] The seawater used is taken from an outdoor reservoir of 100m x 100m, and the seawater is extracted to the indoor cement sedimentation tank with a small submersible pump. The specification of the sedimentation tank is 4m long x 3m wide x 1.5m deep. Carry out initial filtration, add water to 1.2m. The sedimentation tank is shaded with a black cloth. After 24 hours of sedimentation, the submersible pump is placed in a filter cage, the cage is put into the sedimentation tank, and the seawater is pumped into two 100L white plastic buckets with a height of 1m.

[0022] 2. Filter-feeding shellfish filtration

[0023] Buy about 5kg of common clams in the market, with an average shell length of 4.5cm, clean the shells, put them into 2 plastic net bags on average, and then put them into white plastic buckets respectively. The barrel is inflated and covered with a black cloth. Sampling and observation every...

Embodiment 2

[0031] Expand training:

[0032] 1. Seawater extraction and precipitation

[0033] The seawater used is taken from an outdoor reservoir of 100m x 100m, and the seawater is extracted to the indoor cement sedimentation tank with a small submersible pump. The sedimentation tank is 4m long x 3m wide x 1.5m deep. Carry out initial filtration, add water to 1.2m. The sedimentation tank is shaded with a black cloth. After 28 hours of sedimentation, the submersible pump is placed in a filter cage, and the cage is placed in a corner of the sedimentation tank. Seawater is pumped into 15 100L white plastic drums with a height of 1m.

[0034] 2. Filter-feeding shellfish filtration

[0035] Buy Meretrix meretrix, with an average shell length of 4.5cm, clean the shell, put it into a plastic net bag, and put it into each white plastic bucket, about 2.5kg per bucket. Inflate the barrel and cover it with a black cloth; take samples for observation every 4 hours, and use a hose to siphon off ...

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PUM

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Abstract

The invention relates to a preparation method of seawater for field shellfish unicellular alga culture. The preparation method comprises the steps of seawater precipitation, filter feeding shellfish filter, absorbent cotton filter and disinfection. The preparation method, which utilizes particulate substance filter physiological characteristics of seawater bivalve shellfish and allows filter materials of a nylon net, the absorbent cotton and the like to be cooperatively used, enables a large amount of clear seawater to be prepared without a sand filter tank, so the preparation method has the advantages of low cost and convenient operation, can be widely applied to field experiments or small-scale seedling production, and has a good application prospect.

Description

technical field [0001] The invention belongs to the field of cultivating the wild unicellular algae, in particular to a method for preparing seawater for cultivating the wild unicellular algae. Background technique [0002] Single-celled algae are high-quality bait for filter-feeding shellfish, and are widely used in shellfish nursery and culture. At present, the culture technology of single-celled algae has been mature, and it is generally necessary to carry out three-level cultivation, namely: cultivation of preserved and expanded species, expanded cultivation and production cultivation. In addition to light, nutrients and temperature, water treatment is a very important link in the cultivation of Unicellular algae. These include the filtration and disinfection of water. The water for seed conservation generally needs to be filtered through secondary sand, then filtered through activated carbon or absorbent cotton, and then boiled or disinfected with disinfectant. In al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14A01G33/00C02F3/32C02F1/02C02F1/50C02F1/66C02F103/08
CPCY02A40/80
Inventor 唐保军姜朝军尹飞
Owner EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI