Method for evaluating swimming ability of fishes and application

A technology of fish and ability, applied in the application of a method in the design of fish passing facilities, in the field of evaluating fish swimming ability, can solve the problem that the swimming ability test method cannot meet the parameter design requirements of fish passing facilities, etc.

Active Publication Date: 2014-06-18
WATER ENG ECOLOGICAL INST CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the current swimming ability test method cannot meet the design requirements of the fish passing facility parameters, the purpose of the present invention is to provide a method for evaluating the swimming ability of fish, which is easy to operate and easy to operate. The method can be comprehensive, convenient and accurate. Assessment of swimming ability of fish

Method used

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  • Method for evaluating swimming ability of fishes and application
  • Method for evaluating swimming ability of fishes and application
  • Method for evaluating swimming ability of fishes and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Optimum time step selection test for critical swimming speed test

[0058] Using the fixed flow rate method to test the continuous swimming time of fish under a fixed water flow rate, the test target fish are 134 bighead carp with a total length of 14.3±1.3cm, 20.3±1.6cm, and 26.1±1.9cm. The test results are as follows image 3 As shown, there are very few values ​​in the range of 10-200min (there are only two values, one is 32.05min and the other is 30.12min), and most of them are distributed within 10min or above 200min (the two account for the total number of individuals 98.5% of the fish), if it can last for 200 minutes, stop the test, and think that the fish can last for more than 200 minutes. It can be concluded that the critical swimming speed test time step in step 4 is selected as 10-30min.

Embodiment 2

[0060] A method for evaluating the swimming ability of fish, the steps are: (In 2013, in the section of Jinsha River in Batang County, Sichuan Province, the swimming ability of local wild fish was tested and evaluated)

[0061] (1) Select the target fish:

[0062] The long-filament Schizothorax with a total length of 22.4-26.3 cm and a body length of 18.0-21.5 cm was selected as the target species, a total of 30 fish were kept for 72 hours. The appearance is not obviously damaged, and the activity is relatively strong after temporary breeding. The target fish are the same species and collected from the same water area. The difference between the maximum individual body length and the minimum individual body length does not exceed 20% of the minimum individual body length.

[0063] (2), select the test tank:

[0064] Choose evenly closed tanks with adjustable flow rates, such as figure 2 The tank shown is completely submerged in a water-filled environment, including a square...

Embodiment 3

[0095] Application of a method for assessing fish swimming ability in the design of fish-passing facilities, setting test of continuous swimming speed and endurance swimming speed division value

[0096] In 2012, in the section along the Dadu River in Leshan City, Sichuan Province, the continuous swimming time of fish at 80% of the critical swimming speed was tested by using the fixed velocity method. Aim for lip [fish bones] with a total length of 11.0 to 12.5 cm, a genus with a total length of 11.0 to 11.8 cm, a long thin mahi with a total length of 17.6 to 18.0 cm, and an albacore with a total length of 16.5 to 17.7 cm. type.

[0097] It can be seen from Table 5 that at the 80% critical swimming speed of fish, both the duration of individuals is more than 200min, and the duration of individuals is in the range of 20s to 200min. Therefore, the 80% critical swimming speed is close to the continuous swimming speed and endurance swimming. The boundary value of the speed can be...

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Abstract

The invention discloses a method for evaluating the swimming ability of fishes and application of the method in the fish passage facility design. The method comprises the steps that (1) fishes are selected as a target; (2) a test water channel is selected; (3) the sensing flow velocities of the fishes are tested, wherein the total length index, the body length index and the weight index of each fish are recorded, and temporary rearing continues; (4) the critical swimming speeds of the fishes are tested; (5) the onrush swimming speeds of the fishes are tested, wherein the total length index, the body length index and the weight index of each fish are recorded, and the onrush swimming speeds of the fishes are calculated; (6) repeated testing is carried out; (7) statistics is carried out on swimming speed test results, wherein the median of the sensing flow velocities, obtained through repeated testing, of the target fishes, the median of the critical swimming speeds, obtained through repeated testing, of the target fishes, and the median of the onrush swimming speeds, obtained through repeated testing, of the target fishes are calculated; (8) the range of the continuing swimming speeds, the range of durable swimming speeds and the range of the outburst swimming speeds are obtained in a short time, comprehensive evaluation is carried out on the swimming speeds of the fishes, and the maximum flow velocity of a main body structure, the fish luring flow velocity of an inlet, and the range of the flow velocities of an outlet in the fish passage facility design are determined.

Description

technical field [0001] The invention relates to the technical field of water conservancy engineering, more specifically to a method for evaluating the swimming ability of fish, and also relates to the application of the method for evaluating the swimming ability of fish in the design of fish passing facilities. Background technique [0002] Fish swimming ability has been mainly used to study fish behavior habits, physiological and toxicological responses and responses to environmental factors. In recent years, with the rapid development of China's water power development and water conservancy project construction, fish migration channels have been blocked and habitats have been fragmented. Fish passing facilities are an important mitigation measure, and the construction demand is increasing. Among them, fish swimming ability assessment It is indispensable in the design and construction of fish passing facilities. How to quickly and accurately evaluate fish swimming ability b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00A01K63/00A01K61/10
CPCY02A40/81
Inventor 侯轶群王翔胡望斌乔晔
Owner WATER ENG ECOLOGICAL INST CHINESE ACAD OF SCI
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