CN102599120A - Method for trawling live young fishes - Google Patents
Method for trawling live young fishes Download PDFInfo
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- CN102599120A CN102599120A CN2011104252915A CN201110425291A CN102599120A CN 102599120 A CN102599120 A CN 102599120A CN 2011104252915 A CN2011104252915 A CN 2011104252915A CN 201110425291 A CN201110425291 A CN 201110425291A CN 102599120 A CN102599120 A CN 102599120A
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- trawlnet
- fish
- drum
- trawling
- live body
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Abstract
The invention relates to a method for trawling live young fishes, which includes: reserving holes close to an opening of a barrel on the barrel; mounting the barrel at a rear sack of a trawl net; performing trawling in natural waters by single boats; and hauling the trawl net to collect young fishes captured in the barrel. By the method, high stress and injury by transient anoxia after the fishes leave water can be prevented, and the survival rate of the young fishes caught by trawling can be increased evidently.
Description
Technical field
The present invention relates to the fish catching method, particularly relate to a kind of fish juvenile fish live body trawlnet catching method.
Background technology
Carrying out that fish breed, in the research process of breeding, breed, fishing for fish juvenile fish live body from natural waters, through domesticating temporarily, thereby obtaining natural population, is an indispensable important channel.Yet in traditional netting gear fishing operation process such as adopt trawlnet, gill net, throw the net, fishing mortality rate is high, and when especially adopting the trawlnet catching method,, swimming rate strong for some irritability be pelagic fishes faster, is difficult to fish for gather obtain the live body juvenile fish.
Summary of the invention
Technical problem to be solved by this invention provides a kind of fish juvenile fish live body trawlnet catching method, can improve the survival rate that trawlnet is fished for the fish juvenile fish.
The technical solution adopted for the present invention to solve the technical problems is: a kind of fish juvenile fish live body trawlnet catching method is provided, may further comprise the steps:
(1) in the perforate of the side of drum, the position in hole is near the bung position of drum;
(2) drum is installed in the keed rear portion of trawlnet afterbody;
(3) in natural water area, adopt the mode of single boat trawl to carry out trawling;
(4) the fish juvenile fish that catches in the drum is collected in hauling.
Through the polyethylene netting twine drum is installed in the keed rear portion of trawlnet afterbody in the said step (2).
The speed of trawlnet is 3 nautical miles/hour in the said step (3).
The time of trawlnet is 2 minutes in the said step (3).
Beneficial effect
Owing to adopted above-mentioned technical scheme; The present invention compared with prior art; Have following advantage and good effect: the keed rear portion that the present invention is utilized in the trawlnet afterbody installs the plastic cylinder of a bottom lock, the perforate of top, side additional; The juvenile fish that trawlnet is caught concentrates in this drum, can reduce common trawlnet and fish for netting gear friction in the process, crosses strong current and stress wait the frictionally damage to the fish body; Fish for the drum bottom of installing after the water outlet and retain certain water gaging is arranged, can prevent fish body stress damage with short-term hypoxia strongly after dried up, significantly improve the survival rate that trawlnet is fished for the fish juvenile fish.
Description of drawings
Fig. 1 is that trawlnet is fished for schematic representation of apparatus among the present invention.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in the restriction scope of the present invention.Should be understood that in addition those skilled in the art can do various changes or modification to the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Embodiment of the present invention relates to a kind of fish juvenile fish live body trawlnet catching method, may further comprise the steps:
(1) in the perforate of the side of drum, the position in hole is near the bung position of drum.The position in hole can continue up to the middle part of bucket from the edge of bung.
(2) drum is installed in the keed rear portion of trawlnet afterbody.As shown in Figure 1, be connected through the keed distal portion of polyethylene netting twine drum and trawlnet afterbody.
(3) adopt the mode of single boat trawl to carry out trawling.The device of fishing for as shown in Figure 1 has been installed in utilization additional, in natural water area, adopts the mode of single boat trawl, carries out 2 minutes trawling with 3 nautical miles/hour trawlnet speed.
(4) the fish juvenile fish that catches in the drum is collected in hauling.The fish juvenile fish that catches in the drum is collected in trawling hauling after 2 minutes, and the fish juvenile fish is inserted rapidly carry out in the plastic box that is added with uninterrupted oxygenation water body supporting temporarily, can obtain fish juvenile fish live body.
Be not difficult to find; The keed rear portion that the present invention is utilized in the trawlnet afterbody installs the plastic cylinder of a bottom lock, the perforate of top, side additional; The juvenile fish that trawlnet is caught concentrates in this drum, can reduce common trawlnet and fish for netting gear friction in the process, crosses strong current and stress wait the frictionally damage to the fish body; Fish for the drum bottom of installing after the water outlet and retain certain water gaging is arranged, can prevent fish body stress damage with short-term hypoxia strongly after dried up, significantly improve the survival rate that trawlnet is fished for the fish juvenile fish.
Claims (4)
1. a fish juvenile fish live body trawlnet catching method is characterized in that, may further comprise the steps:
(1) in the perforate of the side of drum, the position in hole is near the bung position of drum;
(2) drum is installed in the keed rear portion of trawlnet afterbody;
(3) in natural water area, adopt the mode of single boat trawl to carry out trawling;
(4) the fish juvenile fish that catches in the drum is collected in hauling.
2. fish juvenile fish live body trawlnet catching method according to claim 1 is characterized in that, through the polyethylene netting twine drum is installed in the keed rear portion of trawlnet afterbody in the said step (2).
3. fish juvenile fish live body trawlnet catching method according to claim 1 is characterized in that, the speed of trawlnet is 3 nautical miles/hour in the said step (3).
4. fish juvenile fish live body trawlnet catching method according to claim 1 is characterized in that, the time of trawlnet is 2 minutes in the said step (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104252915A CN102599120A (en) | 2011-12-16 | 2011-12-16 | Method for trawling live young fishes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104252915A CN102599120A (en) | 2011-12-16 | 2011-12-16 | Method for trawling live young fishes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102599120A true CN102599120A (en) | 2012-07-25 |
Family
ID=46517202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104252915A Pending CN102599120A (en) | 2011-12-16 | 2011-12-16 | Method for trawling live young fishes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102599120A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103039408A (en) * | 2012-12-31 | 2013-04-17 | 河北省海洋与水产科学研究院 | Floating trawl for investigating macroplankton in upper middle water body of inland large water surface |
| CN103053481A (en) * | 2013-01-11 | 2013-04-24 | 国家海洋局北海环境监测中心 | Quantitative sampling netting gear for large jellyfishes in oceanic surface layers |
| CN105707022A (en) * | 2016-02-24 | 2016-06-29 | 华东师范大学 | Surface water dragnet |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1653683A1 (en) * | 1989-02-03 | 1991-06-07 | В.Н.Мельников, А.В Мельников, С.Ф.Ефанов и И.Г.Истомин | Device for separating hydrobionts for types and sizes in catching |
| RU1811784C (en) * | 1988-08-11 | 1993-04-30 | Полярный научно-исследовательский институт морского рыбного хозяйства и океанографии им.Н.М.Книповича | Trawl for small fish |
| JP2005341850A (en) * | 2004-06-02 | 2005-12-15 | Nichimo Co Ltd | Seine net |
| CN200962778Y (en) * | 2006-03-31 | 2007-10-24 | 罗明江 | Fishing net |
| CN201682896U (en) * | 2010-03-25 | 2010-12-29 | 中国水产科学研究院长江水产研究所 | Collection net for living beings at bottom layer of river |
| CN201947810U (en) * | 2010-11-22 | 2011-08-31 | 中国水产科学研究院东海水产研究所 | Small-mesh sampling net for marine organism sampling |
| CN102187846A (en) * | 2011-03-01 | 2011-09-21 | 浙江省淡水水产研究所 | Mobile fry fishing apparatus |
-
2011
- 2011-12-16 CN CN2011104252915A patent/CN102599120A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU1811784C (en) * | 1988-08-11 | 1993-04-30 | Полярный научно-исследовательский институт морского рыбного хозяйства и океанографии им.Н.М.Книповича | Trawl for small fish |
| SU1653683A1 (en) * | 1989-02-03 | 1991-06-07 | В.Н.Мельников, А.В Мельников, С.Ф.Ефанов и И.Г.Истомин | Device for separating hydrobionts for types and sizes in catching |
| JP2005341850A (en) * | 2004-06-02 | 2005-12-15 | Nichimo Co Ltd | Seine net |
| CN200962778Y (en) * | 2006-03-31 | 2007-10-24 | 罗明江 | Fishing net |
| CN201682896U (en) * | 2010-03-25 | 2010-12-29 | 中国水产科学研究院长江水产研究所 | Collection net for living beings at bottom layer of river |
| CN201947810U (en) * | 2010-11-22 | 2011-08-31 | 中国水产科学研究院东海水产研究所 | Small-mesh sampling net for marine organism sampling |
| CN102187846A (en) * | 2011-03-01 | 2011-09-21 | 浙江省淡水水产研究所 | Mobile fry fishing apparatus |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103039408A (en) * | 2012-12-31 | 2013-04-17 | 河北省海洋与水产科学研究院 | Floating trawl for investigating macroplankton in upper middle water body of inland large water surface |
| CN103039408B (en) * | 2012-12-31 | 2014-09-17 | 河北省海洋与水产科学研究院 | Floating trawl for investigating macroplankton in upper middle water body of inland large water surface |
| CN103053481A (en) * | 2013-01-11 | 2013-04-24 | 国家海洋局北海环境监测中心 | Quantitative sampling netting gear for large jellyfishes in oceanic surface layers |
| CN105707022A (en) * | 2016-02-24 | 2016-06-29 | 华东师范大学 | Surface water dragnet |
| CN105707022B (en) * | 2016-02-24 | 2019-08-23 | 华东师范大学 | Surface water trawlnet |
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| C12 | Rejection of a patent application after its publication | ||
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Application publication date: 20120725 |