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Fixed-point monitoring method for marine fish roes

A fish egg and marine technology, applied in the direction of sampling devices, etc., can solve the problems of high equipment cost, easy damage, unfavorable research and analysis of fish spawning grounds, etc., and achieve the effect of low equipment cost

Active Publication Date: 2018-11-27
MARINE FISHERIES RES INST OF ZHEJIANG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, this method of monitoring fish spawning grounds by shooting / photographing not only has high equipment costs, is inconvenient to install, and is easily damaged; it is also impossible to directly obtain fish egg samples, which is not conducive to improving the research and analysis of fish spawning grounds

Method used

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  • Fixed-point monitoring method for marine fish roes
  • Fixed-point monitoring method for marine fish roes

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Embodiment Construction

[0026] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0027] Such as figure 1 As shown, a fixed-point monitoring method for marine fish eggs includes a bottom sinking fish egg attachment device. The upper connection rope 3 of the attachment base and the lower connection rope 5 connecting the fish roe attachment base and the counterweight.

[0028] The fish egg attachment base includes a suspension frame 4.1 suspended in the water, a fixed vertical sleeve 4.2 set on the suspension frame, a sliding sleeve 4.3 slidingly arranged on the fixed vertical sleeve, and several vertical sleeves arranged on the outer side of the fixed vertical sleeve. The attached net plate 4.4 on the top and the connection device 4.6 and the trigger device 4.7 arranged on the fixed vertical sleeve.

[0029] The lower end of the fixed vertical sleeve is closed, and the upper end of the fixed vertical sleeve is open. The low...

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Abstract

The invention discloses a fixed-point monitoring method for marine fish roes, and aims to provide a fixed-point monitoring method for marine fish roes which is low in equipment cost and capable of directly acquiring fish roe samples and researching and analyzing fish roe conditions on spawning sites of fishes. The system comprises a sunken fish roe attachment device, wherein the sunken fish roe attachment device comprises a floating frame, a fish roe attachment base, a counter weight, an upper connecting rope and a lower connecting rope, wherein the upper connecting rope is connected with thefloating frame and the fish roe attachment base; and the lower connecting rope is connected with the fish roe attachment base and the counter weight. The fixed-point monitoring method for marine fishroes sequentially comprises the following steps: 1, throwing the sunken fish roe attachment device into a specified sea area, wherein the floating frame floats on the sea surface, the counter weight sinks to the seabed, and the fish roe attachment base is close to the seabed; and 2, recovering the fish roe attachment base after the set time T.

Description

technical field [0001] The invention relates to the field of marine fish spawn monitoring, in particular to a fixed-point monitoring method for marine fish eggs. Background technique [0002] Fish spawning grounds are waters where fish and shrimp gather and breed, and are one of the most important physical environmental factors for fish. Most of the spawning grounds of fish and shrimp in the ocean are near the estuaries of large rivers along the coast. For example, the famous Jiangsu Lusi Fishing Ground in China is a spawning ground for large yellow croakers, small yellow croakers, pomfrets, and squids; Zhejiang Zhoushan Fishing Ground is a spawning ground for hairtail, Large yellow croaker, squid and other spawning grounds. [0003] The monitoring of fish spawning grounds is one of the important means to study fish reproduction. The current monitoring of fish spawning grounds mainly uses camera devices or photographing devices to shoot / photograph fish spawning grounds und...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/16
CPCG01N1/16
Inventor 周永东蒋日进徐开达张洪亮李鹏飞胡翠林刘连为
Owner MARINE FISHERIES RES INST OF ZHEJIANG
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