Method and device for screening sensitive sounds of fish

A fish and sound technology, which is applied in the field of screening fish sensitive sounds, can solve problems such as failure and inapplicability, and achieve the effect of small quantity, simple device and simple equipment

Active Publication Date: 2019-06-18
CHINA THREE GORGES UNIV
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  • Summary
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  • Application Information

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Problems solved by technology

The shortcomings of the current experimental equipment and experimental methods are: the screening process needs to be combined with feeding, and long-term training allows fish to form conditioned reflexes. The so-called "sensitive sounds" screened out by this method are essentially linked to food. The sound of the effect is not the sound that fish are really sensitive to. Applying the screened sound to untrained fish will be completely ineffective, and it cannot be applied to the engineering practice of sound guiding fish.

Method used

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  • Method and device for screening sensitive sounds of fish

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Effect test

Embodiment 1

[0046] Embodiment 1: a kind of method of screening fish sensitive sound, comprises the following steps:

[0047] Step 1) Record sound: Connect the audiometer to the recorder to record the underwater sound of the fish's predators in the natural environment;

[0048] Step 2) Use sound processing software to analyze the frequency-sound intensity spectrum of the recorded sound to obtain the frequency range, select several single-frequency tones in the main frequency range, and use Cool edit pro to synthesize 500Hz, 1000Hz, 1500Hz, 2000Hz, 2500Hz, 3000 Hz single-frequency tone as a control sound;

[0049] Step 3) Observing and recording the free-swimming behavior of fish: put the experimental fish into the water tank 1, turn on the video monitoring system after it adapts, observe and record the free-swimming behavior of the experimental fish in the water tank 1; The ventral beard fish is put into the water tank 1 to adapt for 4-6 hours. About 30-60 minutes before the end of the ad...

Embodiment 2

[0056] Embodiment 2: a kind of method of screening fish sensitive sound, comprises the following steps:

[0057] Step 1) Record the sound: Connect the audiometer to the recorder to record the underwater sound of the fish feeding in the natural environment;

[0058] Step 2) Use sound processing software to analyze the frequency-sound intensity spectrum of the recorded sound to obtain the frequency range, select several single-frequency tones in the main frequency range, and use Cool edit pro to synthesize single-frequency tones of 500Hz, 1000Hz, 1500Hz, and 2000Hz as a contrasting sound;

[0059] Step 3) Observing and recording the free-swimming behavior of fish: put the experimental fish into the water tank 1, turn on the video monitoring system after it adapts, observe and record the free-swimming behavior of the experimental fish in the water tank 1; The ventral beard fish is put into the water tank 1 to adapt for 4-6 hours, and about 30-60 minutes before the end of the ada...

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Abstract

The invention provides a method and apparatus for screening sounds that fishes are sensitive to; the method comprises the steps of recording or synthesizing sound; analyzing frequency-intensity map of the recorded or synthesized sound by using sound processing software to obtain a frequency range of the sound, and selecting a plurality of single-frequency sounds as control sounds; observing and recording free swimming behaviors of a fish; subjecting the fish to single-frequency sound playback experiment; subjecting the fish to an experiment playing sound to be tested; in addition, the invention also provides an apparatus corresponding to the method. The method and apparatus enable a fish's congenital sensitivity and taxis to a certain sound to be analyzed and judged in one experiment, the sounds that fishes are sensitive to are screened out, experimental research on acoustic fish guidance and quick development of experiments in practical engineering are facilitated, and manpower and material resources are greatly saved.

Description

technical field [0001] The invention relates to the technical field of fisheries, in particular to a method and device for screening sensitive sounds of fish. Background technique [0002] Fish behavior is affected by a variety of biotic and abiotic environmental factors, including temperature, light, water velocity, and sound, among which sound is a key factor. According to the response of fish to different sounds, it can be divided into positive phonotropism, negative phonotacticity and non-phonotacticity. As an ecological factor, sound has many ecological effects on fish, directly or indirectly affecting various behaviors of fish. [0003] When the fish pass through the water turbine, the friction and collision between the fish and the water turbine can damage or even directly kill the fish. When the dam flood discharges, many fish will die because they swim to the flood discharge tank and are hit by the huge water flow. These will not only cause certain damage to the e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/10
CPCA01K61/00Y02A40/81
Inventor 刘国勇邬玉娇秦希获田卫新石小涛夏威
Owner CHINA THREE GORGES UNIV
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