Test device and method for studying fish's choice of external factors
A technology of external factors and testing devices, applied in fish farming, application, climate change adaptation, etc., can solve problems such as unseen flow velocity, light color, and flow velocity selectivity, and achieve simple multi-factor determination, convenient operation, and improved operation effect of effect
Active Publication Date: 2020-01-10
PEARL RIVER HYDRAULIC RES INST OF PEARL RIVER WATER RESOURCES COMMISSION
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Problems solved by technology
In recent years, more and more scholars have begun to pay attention to the influence of factors such as light and flow velocity on fish behavior, but there is no relatively mature set of methods that can measure the selectivity of fish to light color, flow velocity, light color and flow velocity. device
Method used
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Embodiment Construction
[0050] In order to have a clearer understanding of the technical features, objectives and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
[0051] Such as figure 1 , 2 As shown, in an embodiment of the present invention, a test device for studying fish selection of external factors, the external factors include light color and / or water flow rate. The test device selected by the research fish for external factors can be set on a test platform such as the ground. It can include a ring-shaped first wall 10, a ring-shaped fishing net 30 detachably arranged inside the first wall 10, and an interval set on the second wall. A plurality of baffles 40 between a wall 10 and a fishing net 30.
[0052] Wherein, the inner space of the first wall 10 forms a fish activity area, and a plurality of baffles 40 divide the annular space between the first wall 10 and the fishing net 30 into ...
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The invention discloses a testing device and method for researching external factor selection of fish. The testing device for researching external factor selection of fish comprises a first annular wall, an annular fish barring net separatably arranged at the inner side of the first wall and multiple baffles arranged between the first wall and the fish barring net at intervals, a fish movement region is formed in the inner space of the first wall, and the annular space between the first wall and the fish barring net is divided into multiple testing regions equal in area by the baffles; an underlight and / or a flow rate opening for water to pass through the corresponding testing region are / is arranged in each testing region. The testing device is designed according to sensitivity to the flow rate and light of fish, is capable of individually measuring tropism to photochromism or flow rate of different fish and tropism to photochromism and flow rate combined conditions of fish, convenient to operate and capable of providing technical support for hydraulic fish attracting and driving measure design and provides the fishway operation effect in China.
Description
Technical field [0001] The invention relates to a test device for studying fish's selection of external factors, in particular to a test device and method for studying fish's selection of external factors. Background technique [0002] The water environment in which fish live is complex and changeable. The main stressor that affects the growth and survival of fish is environmental stressor, including some harmful physical and chemical factors in the water body and surrounding acoustic, optical, electrical and flow fields. Wait for external factors. Among them, flow velocity and light have a greater impact on fish behavior. It is the nature of fish to go upstream, and different water current speeds will cause different swimming behaviors of fish. The light is the guiding factor that causes the fish's metabolic system to react in an appropriate way, and the appropriate light source is conducive to fish reproduction and growth. In recent years, many scholars have been studying how...
Claims
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IPC IPC(8): A01K61/10A01K63/00A01K63/06
CPCA01K61/00A01K63/003A01K63/06Y02A40/81
Inventor莫伟均李杰何贞俊姜宇陈豪黄志怀郭瑜
OwnerPEARL RIVER HYDRAULIC RES INST OF PEARL RIVER WATER RESOURCES COMMISSION