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In situ enclosure-type large-scale farming method for cladocerans in freshwater lake

A breeding method and technology of Cladocera, which is applied in the field of aquaculture and water environment ecological restoration, can solve the problems of no major breakthroughs in cultivation scale and production, and achieve high water utilization rate, simple management and large cultivation scale. Effect

Active Publication Date: 2016-10-26
INST OF AQUATIC LIFE ACAD SINICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Restricted by the source of bait, there is no major breakthrough in the cultivation scale and production

Method used

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  • In situ enclosure-type large-scale farming method for cladocerans in freshwater lake
  • In situ enclosure-type large-scale farming method for cladocerans in freshwater lake
  • In situ enclosure-type large-scale farming method for cladocerans in freshwater lake

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for large-scale cultivation of Cladocera in situ in a freshwater lake, specifically comprising the steps of:

[0032] 1) Screening of Daphnia magna:

[0033] Select healthy and vigorous Daphnia magna (body length greater than 2-6mm). The source of Daphnia magna is mainly artificial cultivation (regular feeding of Chlorella or Scenedesmus at room temperature). Daphnia large.

[0034] 2) Construction of back cover enclosure:

[0035] The enclosure of the bottom cover is made of high-density polyethylene woven cloth, and there is a layer of impermeable polyethylene plastic cloth inside. The four corners of the periphery are fixed on the steel pipe skeleton, and there is no water exchange between the inside and outside of the enclosure. The size of the enclosure is 12m×12m×1.5m (length×width×depth). Filter the lake water rich in cyanobacteria blooms through a screen of more than 200 meshes into the built enclosure; image 3 The cladocera (daphnia large) shown i...

Embodiment 2

[0044] A method for large-scale cultivation of Cladocera in situ in a freshwater lake, specifically comprising the steps of:

[0045] 1) Screening of Daphnia magna:

[0046] Select healthy and vigorous daphnia (body length 2-6mm), the source of daphnia is mainly artificial cultivation, and the provenance is the daphnia that reproduces naturally after hatching in the grassy sea mud of Dianchi Lake;

[0047] 2) Construction of back cover enclosure:

[0048] The enclosure of the bottom cover is made of high-density polyethylene woven cloth, and there is a layer of impermeable polyethylene plastic cloth inside, and the periphery is fixed on the steel pipe skeleton, and there is no water exchange between the inside and outside of the enclosure. The size of the enclosure is 3m×3m×1.5m (length×width×depth). One of the enclosures filters the lake water rich in cyanobacteria blooms through a 200-mesh screen into the built enclosure, and gives natural light to cultivate microalgae; th...

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Abstract

The invention discloses an in situ enclosure-type large-scale farming method for cladocerans in a freshwater lake. The method includes steps of A, constructing a bottom sealing enclosure at the lake surface, wherein high density polyethylene woven cloth is used for making an enclosing curtain and the four corners of the curtain are fixed on a steel pipe skeleton; B, feeding into the enclosure, wherein the natural bait of the cladocerans is microalgae filter liquor obtained through filtering cyanobacterial bloom-containing lake water in an eutrophication lake through a screen; and the cladocerans cultured with cyanobacterial bloom-containing lake water filtered through the screen is used for eating phytoplankton so as to control the blue-green algae amount; C, inoculating the cladocerans in the enclosure, wherein the fresh water cladocerans in large-scale culture are screened and a zooplankter mesh is used for collecting the cladocerans breeding in eutrophication water body; D, collecting the cladocerans in the enclosure, wherein a net bag is used for collecting during the cladoceran breeding process. The method provided by the invention is easy to implement, convenient to operate, low in culture cost, high in water body utilization rate, large in culture scale, facilitates realization of industrial production and provides sufficient zooplankter germplasm resources for ecological restoration of eutrophication lakes.

Description

technical field [0001] The invention belongs to the field of aquaculture and water environment ecological restoration, and more specifically relates to a method for in-situ enclosure and large-scale cultivation of Cladocera in freshwater lakes, and is especially suitable for large-scale cultivation of large Cladocera (such as Daphnia), It can be applied to the large-scale production of high-quality natural bait in the freshwater aquaculture industry and the field of ecological restoration of eutrophic lakes to provide sufficient zooplankton germplasm resources. Background technique [0002] Cladocera, commonly known as daphnia or red worm, belongs to Arthropoda, Crustacea, Phyllopoda, Diplostraca, and Cadoera. An important group of aquatic zooplankton. It plays an important role in the structure, function and biological productivity of aquatic ecosystems. Cladocera not only has a high protein content (40%-60% of dry weight), but also contains important amino acids necessar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K67/033
CPCA01K67/033
Inventor 吴幸强肖邦定王纯波冯闪闪
Owner INST OF AQUATIC LIFE ACAD SINICA
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