CN201414340Y

CN201414340Y - Measuring device for substrate type selection of larval fish

Info

Publication number: CN201414340Y
Application number: CN2009200706368U
Authority: CN
Inventors: 冯广朋; 庄平; 章龙珍; 刘鉴毅; 侯俊利
Original assignee: East China Sea Fishery Research Institute Chinese Academy of Fishery Sciences
Current assignee: East China Sea Fishery Research Institute Chinese Academy of Fishery Sciences
Priority date: 2009-04-17
Filing date: 2009-04-17
Publication date: 2010-03-03
Anticipated expiration: 2019-04-17

Abstract

The utility model discloses a measuring device for the substrate type selection of a larval fish, which comprises a cross rod, a hook, a water tank, a soleplate, a camera, a data transmission line, adisplay, a display transmission line and a computer mainframe. The soleplate (4) on the water tank (3) is equivalently divided into four parts and respectively laid with four types of substrates, namely sand (10), clay (11), small gravels (12) and big gravels (13); the cross rod (1) is placed at the top part of the water tank (3); the camera (5) is hung on the cross rod (1) through the hook (2) and connected with the computer mainframe (9) through the data transmission line (6); and the computer mainframe (9) is connected with the display (7) through the display transmission line (8). The utility model has the advantages of simple structure, high efficiency, easy popularization, convenient and feasible operation and accurate measuring result. The change on the demands of the fish to substrate type is digitally reflected in the measuring result.

Description

The fish prelarva is to the determinator of substrate type selecting

Technical field

The utility model belongs to technical field of aquaculture, particularly relates to the determinator of a kind of fish prelarva to the substrate type selecting.

Background technology

The adaptive behavior of animal can be divided into two big fundamental types according to its complexity and variable pitch: (1) congenital behavior, comprise taxis, conditioned reflex, instinct, these 3 kinds of behaviors are finalized the design, and are determined by neural hereditary capacity that mainly this is geneogenous; (2) acquired behavior comprises study and reasoning, and these 2 kinds of behaviors change with experience and learning process, and this is acquired.There is not the reasoning behavior in fish as the low vertebrate of waiting in their behavior, mainly show as instinctive behavior, and clearly show taxis behavior and conditioned reflex behavior.Fish behaviouristics research has in recent years obtained bigger progress, but the most of research of fish behaviouristics still lays particular emphasis on the fishery aspect, really applies on the breeding production also not too general.Starting late of fish behaviouristics research also exists many incomplete places from the test method to the testing equipment, in the stage that also has a lot of aspects just to be in imagination and to grope, therefore also need to do a large amount of correlative studys.

The fish behaviouristics mainly contains 4 kinds of research methods.(1) field observation method: have the advantage of visualization, comprise direct range estimation and Instrument observation two classes.(2) fishery harvesting test method(s): the catches of using different fishing gears and fishing method relatively come to find out indirectly the method for fish behavior, are convenient to the producer and use.(3) flume experiment method: test in tank with fish or model netting gear, can get rid of the environmental factor of numerous complicated, strengthen the effect of some stimulus, be easy to directly observation and Quantitative Comparison, can be used as the basis of field trial.(4) shoal of fish Behavior modeling method: with the experimental result is foundation, and experimental data is revised discriminating, makes fish behavior rule carry out mathematicization, analyzes the correlation of fish and other factor.

In the early stage ontogeny of the fish stage, the taxis behavior is a most important characteristic, adopts selection (or being called hobby) test to carry out usually to the research of taxis.Stephan Peake finds that the substrate selection of lake sturgeon and the individual size of fish, current, water temperature etc. have than confidential relation.Prelarva behind the fish oosperm incubation of membrane, in the developmental stage living environment there is particular requirement, wherein the substrate type is one of important factor, need seek sandy substrate as some prelarva, some prelarva need be sought the earth substrate, and some prelarva needs the gravel substrate, and some prelarva does not then have particular requirement, utilize the measurement result of fish, can suit measures to local conditions to provide corresponding seed rearing condition the substrate type selecting.Therefore design the device of a kind of accurate mensuration fish prelarva, can grasp its law of development, have important function improving survival rate of young to the substrate type selecting.

The utility model content

Technical problem to be solved in the utility model provides a kind of simple and easy to do, helps grasping the law of development of fish prelarva, improves the determinator of the fish prelarva of weed survival rate to the substrate type selecting.

The technical scheme that its technical problem that solves the utility model adopts is: the determinator of a kind of fish prelarva to the substrate type selecting is provided, comprise cross bar, hook, water tank, base plate, camera, data line, display, show transmission line and host computer, the base plate of described water tank is divided into 4 parts, spread 4 types substrate respectively, be respectively sand, earth, little gravel and big gravel, a cross bar is placed at the top of water tank, described camera hangs on the cross bar by hook, camera is connected with host computer by data line, and host computer is by showing that transmission line is connected with display.

Described water tank height is 1.0 meters, and the bottom is a square, and the length of side is 0.8 meter; Described 4 kinds of substrates are arranged in square, and the length of side is 0.4 meter; 1.0 meters of described cross bar length.

Beneficial effect

The utility model advantage is simple in structure, and the efficient height is easy to promote.Measurement result is with the variation of digital form reflection fish to substrate type demand, and easy and simple to handle feasible, measurement result is accurate.

Description of drawings

Fig. 1 fish prelarva is to the determinator schematic diagram of substrate type selecting.

The schematic diagram of Fig. 2 determinator substrate type.

Among the figure: 1. cross bar 2. hooks 3. water tanks 4. base plates 5. cameras 6. data lines 7. displays 8. show transmission line 9. host computers 10. sands 11. earth 12. pebble stones 13. big gravels

Embodiment

Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment only to be used to the utility model is described and be not used in the restriction scope of the present utility model.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.

As shown in Figure 1, 2, the utility model is made up of cross bar 1, hook 2, water tank 3, base plate 4, camera 5, data line 6, display 7, demonstration transmission line 8, host computer 9.Water tank 3 is 1.0 meters highly, is made by fiberglass, and the bottom is a square, and the length of side is 0.8 centimetre.Water tank 3 base plates are spread 4 types substrate, are respectively sand, earth, little gravel, big gravel, and 4 kinds of substrate quadrates are arranged, and the length of side is 0.4 meter, and area equates, just is combined into 1 square, is layered on water tank bottom.1 stainless steel cross bar 1 is placed at water tank 3 tops, 1.0 meters of cross bar 1 length, and frame is on water tank 3.Camera 5 hangs on the cross bar 1 by linking up with 2, is connected to host computer 9 by data line 6.Adjust the direction of camera 5, make it to take the moving position of whole bottom fish, the image of shooting is presented on the computer monitor 7, and display 7 is by showing that transmission line 8 is connected with host computer 9, so that observe and record.

When measuring the fish prelarva, put 1 electronic watch in that computer is other to the selectivity of substrate type.Ready water is poured in the water tank into 0.2 meter of the depth of water.Connect camera and computer, the image that camera is taken appears on the display.Then the fish prelarva of 1 tail test is put into water tank, after 10 minutes, prelarva is movable stable excessively.This moment, opening entry time and the residing position of prelarva as were positioned on the sand, then were designated as sand.Then whenever prelarva when 1 substrate type is swum in addition 1 substrate type, all note time and residing substrate type position.Continue observed and recorded 30 minutes, pull this tail prelarva then out.Be reentered into other 1 tail prelarva and measure, the rest may be inferred, measures 10 tail prelarvas by tail.After mensuration finishes, add up the every time of tail fish on all kinds substrate, then can grasp the substrate type selecting characteristics of prelarva in this developmental stage, account for 78.8% such as the time that is positioned on the sand, the time that is positioned on the earth accounts for 12.2%, the time that is positioned on the little gravel accounts for 6.2%, and the time that is positioned on the big gravel accounts for 2.8%, shows that then this prelarva has the demand of significant selection sand substrate in stage.By measuring every day, then can grasp the variation characteristic of fish prelarva to the substrate type selecting, account for 84.2% such as the time that was positioned on the sand substrate in the 1st day, then became 76.3% on the 2nd day, the 3rd day be 78.3%, the 4 day be 65.6%, the 5 day be 47.8%, then show prelarva along with development time prolongs, select the time of sand substrate to reduce gradually.Grasp this feature, can in artificial breeding, take corresponding measure, so that improve survival rate.

Claims

1. a fish prelarva is to the determinator of substrate type selecting, comprise cross bar (1), hook (2), water tank (3), base plate (4), camera (5), data line (6), display (7), show transmission line (8) and host computer (9), it is characterized in that: the base plate (4) of described water tank (3) is divided into 4 parts, spread 4 types substrate respectively, be respectively sand (10), earth (11), little gravel (12) and big gravel (13), a cross bar (1) is placed at the top of water tank (3), described camera (5) hangs on the cross bar (1) by hook (2), camera (5) is connected with host computer (9) by data line (6), and host computer (9) is connected with display (7) by showing transmission line (8).

2. a kind of fish prelarva according to claim 1 is characterized in that the determinator of substrate type selecting: described water tank (3) highly is 1.0 meters, and the bottom is a square, and the length of side is 0.8 meter; Described 4 kinds of substrates are arranged in square, and the length of side is 0.4 meter; 1.0 meters of described cross bar (1) length.