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A fry collection device and a fry collection method suitable for the tide-sensitive section of the lower reaches of the Yangtze River

A collection device and collection method technology, which is applied in fishing, application, animal husbandry, etc., can solve the problems of inconvenient operation and the inability of net gear to adapt to water level changes, and achieve the effects of quick assembly, improved fry collection efficiency, and convenient flipping and cleaning

Inactive Publication Date: 2016-04-13
FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a fish fry collection device and a fish fry collection method suitable for the tidal section of the lower reaches of the Yangtze River in view of the defects that the above-mentioned net gear cannot adapt to water level changes and inconvenient operation

Method used

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  • A fry collection device and a fry collection method suitable for the tide-sensitive section of the lower reaches of the Yangtze River
  • A fry collection device and a fry collection method suitable for the tide-sensitive section of the lower reaches of the Yangtze River

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Embodiment Construction

[0027] A method for collecting fry suitable for the tidal section of the lower reaches of the Yangtze River is characterized in that it comprises the following steps:

[0028] (1) Selection and customization of net gear and accessories:

[0029] The net gear and accessories involved in the present invention are as follows: figure 1 , 2 Shown fish fry collection net, seedling collecting box and floating device, connecting device and fixing device (moso bamboo) form. The fry collection net is a cone-shaped cylindrical net 1, both ends are hard net mouths 2 with steel rings, the diameter of the large mouth end is 1.5m, the diameter of the small mouth end is 0.3m, the length of the net is 1.8m, and the mesh is 28. Purpose made of nylon screen silk. The seedling collection box is assembled by a frameless net cage with a cover, four steel fixed rods 9 with hooks and a wooden floating frame 6 with holes, wherein the size of the frameless net cage is 80cm * 60cm * 60cm, the mesh I...

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Abstract

The invention discloses a fry collecting device. The fry collecting device is characterized by comprising a fry collecting net, a fry collecting tank and a float device, wherein the fry collecting tank is connected with the fry collecting net. The invention also discloses a fry collecting method suitable for a tidal section in the downstream Yangtze River. The fry collecting method comprises the steps of selection of nets and accessories, selection of a setting place of the fry collecting net, distribution and connection of the nets, collection of fry and cleaning of the nets, management and maintenance and the like. According to the fry collecting device and the fry collecting method, disclosed by the invention, the nets and a connection mode of the nets are simple in operation, the practicability is high, and the fry collecting efficiency in a river tidal section with larger daily water level difference can be obviously increased.

Description

technical field [0001] The invention belongs to the technical field of fishery, and in particular relates to a fish fry collection device and a fish fry collection method suitable for the tidal section of the lower reaches of the Yangtze River. Background technique [0002] The investigation and research work on the early life history stage of fish is called early fish resource investigation. Early fish resource investigation has the characteristics of strong sampling autonomy, relatively concentrated sampling time and location, easy guarantee of sample size, and less damage to resources. With the help of early fish resource surveys, not only can the number of breeding populations and the scale of spawning sites be estimated, but also the regularity of changes in fish populations can be predicted. Provide a scientific basis for the development, utilization and protection of fish resources. Fry collection is an important part of early fish resource investigation. Fishermen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K69/04
Inventor 张敏莹徐东坡周彦锋段金荣刘凯方弟安
Owner FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI