CN205378711U - Gather large -scale zoobenthos's of fresh water square mouth trawlnet - Google Patents
Gather large -scale zoobenthos's of fresh water square mouth trawlnet Download PDFInfo
- Publication number
- CN205378711U CN205378711U CN201620153896.1U CN201620153896U CN205378711U CN 205378711 U CN205378711 U CN 205378711U CN 201620153896 U CN201620153896 U CN 201620153896U CN 205378711 U CN205378711 U CN 205378711U
- Authority
- CN
- China
- Prior art keywords
- rectangular frame
- trawlnet
- fresh water
- square mouth
- macrobenthos
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a large -scale zoobenthos's of fresh water initiative sampling tool field especially is a gather large -scale zoobenthos's of fresh water square mouth trawlnet, rectangular frame and pocket including straight tube -shape, rectangular frame's outside bottom is provided with the shovel tongue, the open butt joint of pocket in rectangular frame's medial opening, two horizontal side symmetries in the outside of rectangular frame are provided with a pair of handle. This gather large -scale zoobenthos's of fresh water square mouth trawlnet is applicable to various soft, stereoplasm substrate and has the collection of richening the medium -and -large -sized zoobenthos sample in habitat that aquatic vegetation distributes, can effectively catch the great samples of home range such as large -scale individualities such as freshwater mussel and shrimp, can form complementation, comparatively spatial distribution and the community's abundance of scientific and reasonable ground description different category bion with other quantitative sampling tool.
Description
Technical field
This utility model relates to the active sampling tool field of fresh water macrobenthos, especially for a kind of square mouth trawlnet gathering fresh water macrobenthos.
Background technology
The active sampling tool of fresh water macrobenthos is broadly divided into quantitative and semi-quantitative two class, and quantitative tool is mainly grab bucket-type dredger, and sxemiquantitative mainly includes fishing net and trawlnet etc..In actual samples process, generally require quantitative and semi-quantitative sampling and combine, while obtaining sampling point position many macrobenthos sample as far as possible, characterize species distribution situation scientifically and rationally, make monitoring result more representative.The grab bucket aperture area of quantitative sampling is less, it is adaptable to gather the individual less species such as oligochaetes, chironomus larvas, catches comparatively random to the ripe individuality such as Mollusca, large-scale shell-fish and insecticide.Sampling point habitat also be there are certain requirements by the use of grab bucket, it is adaptable to gathers the sample in mud type or the soft substrate habitat based on fine grained, it is impossible to meets at the bottom of hard and has the sample collecting of a large amount of aquatic vegetation distribution sampling point.Therefore, in view of the above-mentioned condition restriction of grab bucket quantitative sampling, sxemiquantitative sampling will be a good selection and supplement.At present, comparatively conventional sxemiquantitative sampling tool includes D type fishing net and triangle trawlnet.Wherein, D type fishing net is mainly used in paddling the collection of sampling point sample, such as the bank shoal, shore etc. in shallow river, great river or lake；Triangle trawlnet can be used for the various sediment types such as mud, soft and hard, but owing to lighter in weight and opening are less, often that the habitat sampling efficiency having a large amount of water plant to be distributed is relatively low, the species collection of individuality big (such as freshwater mussel) and Burden-Swimming Ability of KM strong (such as shrimp) there is is bigger uncertainty.
Summary of the invention
This utility model purpose is in that to solve the problems referred to above, it is provided that a kind of square mouth trawlnet gathering fresh water macrobenthos, is specifically realized by techniques below scheme:
A kind of square mouth trawlnet gathering fresh water macrobenthos, including rectangular frame and the mesh bag of straight-tube shape, the exterior bottom of described rectangular frame is provided with shovel tongue, and the open butt joint of described mesh bag is in the interior side opening of described rectangular frame；Two, the outside of described rectangular frame transverse sides is symmetrically arranged with a pair handle.
The described square mouth trawlnet gathering fresh water macrobenthos, it designs further and is in that, the outside of described rectangular frame is symmetrically extended two gimbal levers being positioned at described mesh bag both sides.
The described square mouth trawlnet gathering fresh water macrobenthos, its further design be in that, the described gimbal lever end corresponding with bottom described mesh bag is arc-shaped.
The described square mouth trawlnet gathering fresh water macrobenthos, its further design be in that, the side that described shovel tongue is relative with described rectangular frame outer openings is downward-sloping domatic.
The described square mouth trawlnet gathering fresh water macrobenthos, it designs further and is in that, the bag mouth of described mesh bag is sewed with the connecting portion that canvas is made, and this connecting portion is pressed together on the inner side opening sidewalls of described rectangular frame by a tabletting.
The beneficial effects of the utility model are in that:
The square mouth trawlnet of this collection fresh water macrobenthos is applicable to various soft, hard substrates and has the collection of the medium-and-large-sized zoobenthos sample in habitat that abundant aquatic vegetation is distributed；Can effectively catch the sample that the range of activity such as Large scale individual and shrimp such as freshwater mussel are bigger；Complementation can be formed with other quantitative sampling instruments, describe spatial distribution and group's abundance of Different groups bion comparatively scientifically and rationally.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of embodiment of the present utility model.
Fig. 2 is rectangular frame structure schematic diagram.
Fig. 3 is mesh bag structural representation.
Detailed description of the invention
Below in conjunction with Figure of description and embodiment, this utility model is further described:
As it can be seen, the square mouth trawlnet of this collection fresh water macrobenthos, including rectangular frame 1 and the mesh bag 2 of straight-tube shape, the exterior bottom of rectangular frame is provided with shovel tongue 4, and the open butt joint of mesh bag is in the interior side opening 3 of rectangular frame；Two, the outside of rectangular frame transverse sides is symmetrically arranged with a pair handle 5.In order to ensure intensity and the stability in the large of square mouth trawlnet, rectangular frame 1 adopts stainless steel to make, and mesh bag 2 uses high-strength nylon to make.
The outside of rectangular frame is symmetrically extended two gimbal levers 8 being positioned at mesh bag both sides.The gimbal lever end corresponding with bottom mesh bag is arc-shaped.This arc-shaped end can be also used for the spike when the vertical placement of trawlnet.
The shovel tongue side relative with rectangular frame outer openings is downward-sloping domatic.The bag mouth of mesh bag is sewed with the connecting portion that canvas is made, and this connecting portion is pressed together on the inner side opening sidewalls of rectangular frame 1 by a tabletting 6 and screw rod 7.
During use, one, rope being lain in two side grips 5, other end lies in stern or other pull on power tool, is then put in water by square mouth trawlnet and sinks to the bottom, and carries out drawing sampling with speed comparatively slowly.
The square mouth trawlnet of this collection fresh water macrobenthos is applicable to various soft, hard substrates and has the collection of the medium-and-large-sized zoobenthos sample in habitat that abundant aquatic vegetation is distributed；Can effectively catch the sample that the range of activity such as Large scale individual and shrimp such as freshwater mussel are bigger；Complementation can be formed with other quantitative sampling instruments, describe spatial distribution and group's abundance of Different groups bion comparatively scientifically and rationally.
Claims (5)
1. the square mouth trawlnet gathering fresh water macrobenthos, it is characterised in that including rectangular frame and the mesh bag of straight-tube shape, the exterior bottom of described rectangular frame is provided with shovel tongue, and the open butt joint of described mesh bag is in the interior side opening of described rectangular frame；Two, the outside of described rectangular frame transverse sides is symmetrically arranged with a pair handle.
2. the square mouth trawlnet of collection fresh water macrobenthos according to claim 1, it is characterised in that the outside of described rectangular frame is symmetrically extended two gimbal levers being positioned at described mesh bag both sides.
3. the square mouth trawlnet of collection fresh water macrobenthos according to claim 2, it is characterised in that the described gimbal lever end corresponding with bottom described mesh bag is arc-shaped.
4. the square mouth trawlnet of collection fresh water macrobenthos according to claim 1, it is characterised in that the side that described shovel tongue is relative with described rectangular frame outer openings is downward-sloping domatic.
5. the square mouth trawlnet of collection fresh water macrobenthos according to claim 1, it is characterised in that the bag mouth of described mesh bag is sewed with the connecting portion that canvas is made, and this connecting portion is pressed together on the inner side opening sidewalls of described rectangular frame by a tabletting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620153896.1U CN205378711U (en) | 2016-03-01 | 2016-03-01 | Gather large -scale zoobenthos's of fresh water square mouth trawlnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620153896.1U CN205378711U (en) | 2016-03-01 | 2016-03-01 | Gather large -scale zoobenthos's of fresh water square mouth trawlnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205378711U true CN205378711U (en) | 2016-07-13 |
Family
ID=56350018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620153896.1U Expired - Fee Related CN205378711U (en) | 2016-03-01 | 2016-03-01 | Gather large -scale zoobenthos's of fresh water square mouth trawlnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205378711U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106614425A (en) * | 2016-09-09 | 2017-05-10 | 中国科学院海洋研究所 | Novel submarine trawl net |
| CN110367211A (en) * | 2019-08-29 | 2019-10-25 | 浙江海洋大学 | A kind of seabed trawlnet netting gear |
| CN116019069A (en) * | 2023-02-09 | 2023-04-28 | 中国水产科学研究院黑龙江水产研究所 | Qualitative acquisition device for free-moving benthonic animals in river |
-
2016
- 2016-03-01 CN CN201620153896.1U patent/CN205378711U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106614425A (en) * | 2016-09-09 | 2017-05-10 | 中国科学院海洋研究所 | Novel submarine trawl net |
| CN110367211A (en) * | 2019-08-29 | 2019-10-25 | 浙江海洋大学 | A kind of seabed trawlnet netting gear |
| CN116019069A (en) * | 2023-02-09 | 2023-04-28 | 中国水产科学研究院黑龙江水产研究所 | Qualitative acquisition device for free-moving benthonic animals in river |
| CN116019069B (en) * | 2023-02-09 | 2023-08-15 | 中国水产科学研究院黑龙江水产研究所 | Qualitative acquisition device for free-moving benthonic animals in river |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Sasekumar et al. | Mangroves as a habitat for fish and prawns | |
| Rose et al. | Adaptive strategies of Ambystoma tigrinum Green inhabiting the Llano Estacado of west Texas | |
| Ono | Ethno-archaeology and early Austronesian fishing strategies in near-shore environments | |
| CN205378711U (en) | Gather large -scale zoobenthos's of fresh water square mouth trawlnet | |
| Malm et al. | Effects of beach cast cleaning on beach quality, microbial food web, and littoral macrofaunal biodiversity | |
| McKindsey et al. | Biodeposit production and benthic loading by farmed mussels and associated tunicate epifauna in Prince Edward Island | |
| Nelson et al. | Rhodolith beds in northern New Zealand: characterisation of associated biodiversity and vulnerability to environmental stressors | |
| Eshenroder et al. | Comparison of lake trout-egg survival at inshore and offshore and shallow-water and deepwater sites in Lake Superior | |
| CN112079519B (en) | Emergency and long-acting control method for eutrophic water bloom | |
| CN109122438A (en) | A kind of purple sea hybrid scallop bottom sowing aquaculture method | |
| Giese et al. | Annual reproductive cycles of the chitons, Katherina tunicata and Mopalia hindsii | |
| Ayres | Easter Island Subsistence. | |
| Witham et al. | Notes on postlarvae of Panulirus argus | |
| Mendis | A preliminary survey of 21 ceylon lakes-2.: Limnology and Fish Production Potential | |
| Park et al. | The effects of poplar (P. trichocarpa× deltoides) on soil biological properties in a silvoarable system | |
| Messner et al. | Long-term changes in the vertical distribution of macrophytobenthic communities in the Greifswalder Bodden | |
| Corbet et al. | Ecological studies on crater lakes in West Cameroon lakes Kotto and Mboandong | |
| Wingate et al. | A program for successful muskellunge management—A Minnesota success story | |
| Chuku | Promoting oyster culture in Ghana: Strategies for optimising seed collection and growth of crassostrea tulipa (lamarck, 1819) in coastal water bodies | |
| Stokesbury et al. | Environmental impacts related to mechanical harvest of cultured shellfish | |
| CN212035473U (en) | Novel quasi-ecological artificial fish reef | |
| Godcharles et al. | Exploratory clam survey of Florida nearshore and estuarine waters with commercial hydraulic dredging gear | |
| CN106577559B (en) | A kind of fishing and artificial domestication method of sea otter | |
| Lauzier et al. | Scallops of the west coast of North America | |
| Zhang et al. | Effects of substrate on burrowing behavior, feeding physiology, and energy budget of undulated surf clam Paphia undulata |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160713 Termination date: 20170301 |