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Coilia ectenes Jordan catching method

A technology of scorpionfish and fishing gear, which is applied in the field of indoor fish farming, can solve the problems of manpower and material resources, fish net scratches, stress hypoxia and suffocation of fish fingerlings, etc., and achieves the effects of fast sampling time, maintaining activity and easy survival.

Inactive Publication Date: 2017-06-27
BADONG FENGTAI AGRI SPECIALIZED COOP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, sampling was carried out with polyethylene nets in the pond, which not only consumes manpower and material resources, but also the fish species are vulnerable to long-term stress, hypoxia, suffocation, net scratches, etc.

Method used

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  • Coilia ectenes Jordan catching method
  • Coilia ectenes Jordan catching method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Time: 19:45 on November 8, 2012, 3Lux, water temperature in the pool is 18.1℃;

[0015] Special catching tools: waterproof flashlight, water basin, bucket, a semi-elliptical bamboo sieve with a circular opening diameter of 50cm, depth of 30cm, and sieve gap of 0.4cm (such as figure 1 , 2 As shown), the bamboo sieve will seep when placed in the water, and it will leak when taken out of the water;

[0016] Capture process: Use a flashlight to illuminate the surrounding area of ​​the silver anchovy pool for 0.5 minutes in advance, then put the sieve into the water along the side of the pool wall, with the circular opening facing the normal swimming direction of the silver anchovy, and keep one-third of the sieve on the water surface On the top, the flashlight shines on the circular opening of the sieve. Since the anchovy has phototaxis, fish swim over after 0.5 minutes of directional light projection. When the fish swim into the sieve, quickly lift up the opening of the s...

Embodiment 2

[0018] Time: 19:05 on November 15, 2012, 4Lux, water temperature in the pool is 15.6°C;

[0019] Special catching equipment: waterproof flashlight, water basin, bucket, a semi-ellipsoidal bamboo sieve with a circular opening diameter of 60cm, depth of 40cm, and sieve gap of 0.4cm (such as figure 1 , 2 As shown), it will seep in the water, and it will leak when taken out of the water;

[0020] Capture process: Use a flashlight to illuminate the surrounding area of ​​the silver anchovy pool for 1 minute in advance, then put the sieve into the water along the side of the pool wall, with the circular opening facing the normal swimming direction of the silver anchovy, and keep one-third of the sieve on the water surface , the flashlight shines on a place next to the circular opening of the sieve. Since the anchovy has phototaxis, fish swim one after another after directional light projection for 1 minute. Seeing the fish swim into the sieve, quickly lift the opening of the sieve u...

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Abstract

The invention discloses a method for catching the common anchovy, specifically: after evening, when the illuminance is below 5 Lux, first use a flashlight to irradiate around the pool of the common anchovy, and then put the sieve sideways into the water, with the opening facing the common swimming of the common anchovy Keep the sieve part on the water surface, shine the flashlight near the opening of the sieve, and cast the light directionally for 1-5 minutes. When the fish swims to the vicinity of the sieve, quickly lift the opening of the sieve upward, and move two-thirds of the sieve volume out of the water. Remove the fish from the sieve with the water holding tool. The invention is based on the phototaxis effect of the common anchovy, and the fishing tools used are smooth, so the common anchovy has no scratches, is not easy to lose scales, and is easy to survive, and the sampling time is fast, the efficiency is high, and the samples can be selected.

Description

technical field [0001] The invention relates to a fishing technique in an indoor cement pond, in particular to a method for catching anchovy, and belongs to the technical field of indoor fish breeding. Background technique [0002] Coilia nasus belongs to the genus Engraulidae of the order Clupeiformes, also known as long-jawed coilia, commonly known as Coilia nasus, is an important migratory fish in the Yangtze River in China, and enjoys the reputation of "three delicacies of the Yangtze River". One of the famous and precious fish, its meat is delicious and nutritious, and it is very popular among people. At present, the deterioration of the ecological environment, the sharp decline in the resources of the anchovy, and the attention of the media and the enthusiasm of the public have resulted in the situation of "difficult to find" in the market. [0003] In 2003, the Freshwater Fishery Research Center of the Chinese Academy of Fishery Sciences and Jiangyin Shengang Sanxian...

Claims

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Application Information

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IPC IPC(8): A01K79/00
CPCA01K79/00
Inventor 周武成
Owner BADONG FENGTAI AGRI SPECIALIZED COOP
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