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Method for collecting rotifers, Cladocera and copepods zooplankton

A zooplankton and collection method technology, applied in hunting equipment, applications, animal husbandry, etc., can solve the problems of limited collection area, high labor intensity, long time consumption, etc. Effect

Inactive Publication Date: 2010-04-14
FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, it is generally used to collect zooplankton nets by manual dragging, which has the disadvantages of high labor intensity, long time consumption and small collection area; and the use of large water flow generators to collect through the net frame makes the collection area affected. Very restrictive, unusable in small bodies of water

Method used

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  • Method for collecting rotifers, Cladocera and copepods zooplankton
  • Method for collecting rotifers, Cladocera and copepods zooplankton

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: A collection method of rotifers, cladoceras and copepod zooplankton, adopts the following collection steps:

[0019] 1. Select the water body for collection Select a river channel with a density of 10 zooplankton (Rotifera, Cladocera and Copepoda) in the water body.

[0020] 2. Fix the device and start the water pump. Fix the collection device in the selected waters so that the water inlet of the submersible pump is 50 cm away from the water surface. After starting the water pump, collect zooplankton (rotifera (Rotifera), cladocera (Cladocera) and Copepoda).

[0021] 3. Screening and cleaning of zooplankton

[0022] The zooplankton separated Rotifera (Rotifera) was used as the opening bait for fish, and the collected zooplankton (Rotifera (Rotifera), Cladocera (Cladocera) and Copepoda (Copepoda)) were added to clean pond water (volume ratio 1 : 1) Finally, filter with 200-mesh silk screen, take the filtrate, and wash it once with clean pond water. Clado...

Embodiment 2

[0024] Embodiment 2: a collection method of rotifers, cladoceras and copepod zooplankton, adopts the following collection steps:

[0025] 1. Select the water body for collection Select a pond with a zooplankton (Rotifera, Cladocera and Copepoda) density of 30 / ml in the water body.

[0026] 2. Fix the device and start the water pump. Fix the collection device in the selected waters so that the water inlet of the submersible pump is 40cm away from the water surface. After starting the water pump, collect zooplankton (Cladocera and Copepoda) every 1.5 hours .

[0027] 3. Screening and cleaning of zooplankton

[0028] Separate cladocera (Cladocera) and copepoda (Copepoda) zooplankton as bait for fish, and collect zooplankton (rotifera (Rotifera), cladocera (Cladocera) and copepoda (Copepoda)) into clean Water (volume ratio 1:1) is filtered with a 150-mesh sieve, and then the zooplankton on the filter is added to clean pond water (volume ratio 1:1) and then filtered with a 60-mes...

Embodiment 3

[0030] Embodiment 3: a kind of collection method of rotifers, cladoceras and copepod zooplankton adopts following collection steps:

[0031] 1. Select the water body for collection Select a ditch with a zooplankton (Rotifera, Cladocera and Copepoda) density of 50 / ml in the water body.

[0032] 2. Fix the device and start the water pump Fix the collection device in the selected water area so that the water inlet of the submersible pump is 30cm away from the water surface, and collect zooplankton every 1.0 hour after starting the water pump.

[0033] 3. Screening and cleaning of zooplankton

[0034] Separate cladocera (Cladocera) and copepoda (Copepoda) zooplankton as bait for fish, and collect zooplankton (rotifera (Rotifera), cladocera (Cladocera) and copepoda (Copepoda)) into clean The pond water (volume ratio 1:1) was filtered with a 125-mesh silk screen, and then the zooplankton (Cladocera and Copepoda) on the filter were added to the clean pond water (volume ratio 1:1). ...

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Abstract

The invention relates to a method for collecting rotifers, Cladocera and copepods zooplankton, belonging to the technical field of fish culture. The method comprises the following steps of selecting collecting water areas of river channels, ditches or ponds and the like the zooplankton density of which is higher than 10 / ml in water bodies; fixing a collecting device and starting a submersible pump to ensure that the water inlet of the submersible pump is 30-50cm away from water surface, and collecting the zooplankton once every 1-2 hours after the pump is started; and separating the collected zooplankton according to different application with different mesh bolting silk and cleaning for 1-3 times with clean pond water. The device employed by the invention has simple structure, easy material obtainment and convenient use; the natural zooplankton resources naturally breeding and easily regenerating in various fresh water bodies can be sufficiently utilized, thereby greatly reducing the labor intensity and being suitable for use in standing water, slow flow water areas and water bodies with different sizes. The method has the characteristics of high efficiency, economy, practicality and the like.

Description

technical field [0001] The invention relates to a method for collecting zooplankton of rotifers, cladocerans and copepods, and belongs to the technical field of freshwater fish cultivation. Background technique [0002] Among zooplankton, rotifera (Rotifera) is an extremely important or even irreplaceable biological bait in the process of seedling cultivation in freshwater fishery production; and zooplankton such as Cladocera and copepoda (Copepoda) Because of its comprehensive nutrition and rich in unsaturated fatty acids, it has become an excellent bait for fish; as an active bait, it does not pollute the water quality, and it is a good nutritional formula for the induction of gonad maturation of some rare fish, and is favored by farmers. [0003] Zooplankton have strong reproductive ability, wide distribution and strong adaptability, and are distributed in various rivers, ditches and ponds. At present, it is generally used to collect zooplankton nets by manual dragging, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01M31/00
Inventor 张呈祥顾若波郑金良徐钢春徐跑
Owner FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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