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Sampling device and sampling method for pond-culture flatfish

A sampling device, the technology of flounder flounder, applied in fishing, application, animal husbandry, etc., can solve the problems of time-consuming and labor-intensive sampling of rotary nets and hand-drawn nets, easy damage to fish bodies, large deviations, etc., to increase the number of people entering the sampling device The probability of avoiding escape and the effect of large bottom length

Active Publication Date: 2015-04-29
DALIAN FUGU FOOD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the presence of sea cucumber reefs and sea cucumbers in ponds where sea cucumbers and flounder are mixed, sea cucumbers are easy to be taken out during sampling. If the cover is rotated or scooped to the sea cucumber reefs, the net will be broken, so rotating nets and manual sampling cannot be used. Copy network sampling
Therefore, scientific research personnel and practitioners of pond cultured flounder urgently need a low-cost, simple structure, easy to manufacture, convenient operation, and make the sample deviation less, the quantity is sufficient, does not damage the fish body, and can truly reflect the situation of pond cultured flounder populations. Sampling device and method to solve the problems that the traditional rotary net and manual net sampling are time-consuming and labor-intensive, cannot be used in ponds where sea cucumbers and flounder are mixed, the deviation between the sample and the actual population is large, and the fish body is vulnerable to damage, etc.

Method used

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  • Sampling device and sampling method for pond-culture flatfish
  • Sampling device and sampling method for pond-culture flatfish
  • Sampling device and sampling method for pond-culture flatfish

Examples

Experimental program
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Effect test

Embodiment 1

[0056] From May to November 2013, during the implementation of the project "National Flounder Industry Technology System-Pond Breeding Project" in the Rizhao City Water Conservancy Farm of Shandong Province, we used the sampling device of the present invention and the rotating net to make a random sampling comparison of flounder test.

[0057] 1. Test conditions and basic situation

[0058] Breeding methods and ponds are engineered pond full-circulation water systems, and the water used for aquaculture is natural seawater. During the high temperature period in summer, the temperature of the aquaculture water is adjusted with low-temperature seawater from underground deep wells, and the daily water exchange rate is 50% to 80%. The water quality parameters during the entire breeding process are: water temperature 14-29°C, dissolved oxygen 5.1-8.5 mg / L, salinity 26-30, pH 7.8-8.2. On May 15, the whole system was used with a single area of ​​4.5 mu A total of 6 small conjoined po...

Embodiment 2

[0072] From the beginning of May to the beginning of December in 2012, we used the sampling device of the present invention to conduct a sampling test during the implementation of the project "Pond polyculture technology demonstration of sea cucumber and flounder" in Wudi County, Shandong Province Youcheng Ocean Technology Development Co., Ltd.

[0073] 1. Test conditions and basic situation

[0074] There are 3 polyculture ponds for sea cucumber and flounder, with an area of ​​48 mu (Pond No. 9), 44 mu (Pond No. 10) and 47 mu (Pond No. 11), with a water depth of 1.00-1.20m. There are sea cucumber reefs in the ponds. An average of 500 sea cucumbers / 500g per mu and 10 kg of sea cucumbers are stocked, and the average body length of flounder fry is 155 mm (140-168 mm), with a total of 20,000 fish, including 4,800 fish in No. 9 pond, 6,600 fish in No. 10 pond, and 6,600 fish in No. 11 pond. Pond 8 600 tails. Sea cucumbers are not fed with bait, and the humus in the pond, excremen...

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Abstract

The invention discloses a sampling device and a sampling method for a pond-culture flatfish, and belongs to the field of marine fish culture equipment. The sampling method comprises a funnel-shaped outer net cage, a large funnel net, a small funnel net, a large bamboo circle, a small bamboo circle, a stay bar, an edge line, a float line, a sinker line, a buoy, a buoy rope, a cross rope anchorage, a tail end anchorage, a tail end rope, a tail end anchorage line and a cross rope, wherein the sampling device is paved in a pond during sampling, and is taken in the next day, so that the requirements that regular sampling observation analysis is needed in the bastard halibut culture process and the sample n is greater than or equal to 30 are met; and the fish body is free of injury. The sampling device is low in price, simple in structure, easy to manufacture, and convenient to operate; the number of collected samples is ensured; the injuries to the fish body are reduced or avoided; the sample deviation is relatively small; and the condition of the pond-culture flatfish population can be really reflected.

Description

technical field [0001] The invention belongs to the field of seawater fish breeding equipment, in particular to a device and method for randomly sampling the flounder and flounder in order to observe and grasp the growth conditions of the flounder and flounder in the process of large-scale cultivation of the flounder and flounder in ponds. technical background [0002] Flounder (Paralichthys olivaceus) is also known as brown flounder because of the dark brown side of the eye, the body is oblong and flattened on the side; the two eyes are located on the left side of the head; the side with the eye is grayish brown or dark brown, in the center of the straight line of the lateral line and up and down the front end Each has a bright black spot approximately equal to the pupil, and there are dark rings or spots scattered everywhere else. The dorsal fin, anal fin and caudal fin all have dark spots, and the pectoral fins have yellowish-brown spots or horizontal stripes; the side wit...

Claims

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Application Information

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IPC IPC(8): A01K69/08
CPCA01K69/08
Inventor 史宝孙中之柳学周徐永江
Owner DALIAN FUGU FOOD CO LTD
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