Summary of the invention
The objective of the invention is to overcome above-mentioned weak point, in conjunction with inherent physiological change of cutter long-tailed anchovy mating season and the synergistic principle of external environment, thereby provide a kind of pond support cutter long-tailed anchovy parent population draw in the net fish for, transportation and method for temporarily cultivating, reduce the damage of fish body, improve transportation survival rate and form motility rate temporarily.
According to technical scheme provided by the invention, a kind of pond of the present invention support cutter long-tailed anchovy parent population draw in the net fish for, transportation and method for temporarily cultivating, adopt the following processing step of supporting temporarily:
1, cutter long-tailed anchovy parent population draws in the net to fish for
1. water temperature: 15~22 ℃ early morning;
2. special netting gear: the netting gear bottom line of making at 10~16 order polythene net cloth is a long 1.0m every 0.5m, the chain stubble of heavy 1Kg;
3. draw in the net to fish for: keep the net sheet straight and upright when drawing in the net as far as possible, reduce the cutter long-tailed anchovy as far as possible and touch net, glue net; After parent population goes into the string bag, keep big water body, prevent cutter long-tailed anchovy parent population anoxic, and around the net sheet cutter long-tailed anchovy parent population relatively concentration zones begin, connect fish tape water and change in the transportation bucket with basin.
2, parent population transportation
1. transport bucket: bucket adopts plastics to make circle, and diameter 60~80cm, bucket inner wall be the thin sponge of one deck fixedly;
2. transport water: get clean pond water after precipitating 1~3 hour, handle with salt, salinity is 5~7 ‰ in the water of mixing back, brings moss when avoiding fish to change in the bucket into;
3. transportation: keep suitable traffic density, the water level in the carrying ladle is the high 4/7-6/7 of bucket, can take the micro-pore aeration oxygen-increasing device in the transportation, must guard against strong oxygenation, and haulage time remains in the 40min.Before the storage pond, holding pond, earlier the water temperature in the fishpond is adjusted under the fish, when going into the pond, carrying ladle is tilted to 90 ° gently, slowly after bucket end direction, take out carrying ladle, change fish over to storage pond, holding pond near transportation pond water temperature.
3, support temporarily
Storage pond, holding pond is indoor cement pit, and area is at 20~40m
2, the depth of water is at 0.8~1.0m.Storage pond, holding pond must keep sufficient dissolved oxygen, suitable light and certain bath flow velocity.
The density of cutter long-tailed anchovy parent population is 2~3 tails/10L water in carrying ladle during described the transportation;
The cutter long-tailed anchovy ripe fish density of supporting temporarily in the described storage pond, holding pond is: 1~3 tail/300L water;
Described storage pond, holding pond water is that underground phreatic water in cultivation base and cutter long-tailed anchovy parent population are cultured the pond pond water, and both proportions are 3: 4;
Described storage pond, holding pond bath flow velocity is at 0.1~0.3m/s.
The present invention compares with existing other similar techniques and has the following advantages:
1, the present invention provides truly feasible transportation, has supported the scheme thinking temporarily for the solution of the artificial propagation techniques of migration fishes such as cutter long-tailed anchovy;
2, the present invention can avoid the injured of cutter long-tailed anchovy parent population, effectively improve the transportation of cutter long-tailed anchovy parent population, form motility rate temporarily, and method is simple and convenient and easy to study.
Embodiment
Following the present invention will be further described with embodiment in conjunction with the accompanying drawings:
Embodiment 1: a kind of pond of the present invention support cutter long-tailed anchovy parent population draw in the net fish for, transportation and method for temporarily cultivating, adopt the following processing step of supporting temporarily:
1, parent population draws in the net to fish for
1. time place: 1-15 early morning day in April, 2009,15 ℃ of pond water temperatures;
2. special netting gear: netting gear is made up of headline 1, float 2,10 order polyethylene screen cloths 3, bottom line 4, chain stubble 5.10 order polyethylene screen cloths 3 by raise to the higher plane of principle 1, bottom line 4 connects into the netting gear body, raise to the higher plane of principle 1 to be provided with many floats 2, on bottom line 4, be a long 1m every 0.5m, the chain stubble of heavy 1Kg;
3. draw in the net to fish for: keep the net sheet straight and upright when drawing in the net as far as possible, reduce the cutter long-tailed anchovy as far as possible and touch net, glue net; After parent population goes into the string bag, keep big water body, prevent the hairtail anoxic, and around the net sheet cutter long-tailed anchovy relatively concentration zones begin, connect fish tape water and change in the transportation bucket with basin.
2, parent population transportation
1. transport bucket: bucket adopts plastics to make, and is shaped as circle, and bucket diameter 60cm, bucket inner wall be the thin sponge of one deck fixedly;
2. transport water: get clean pond water after precipitating 1 hour, handle with salt, salinity is 5 ‰ in the water of mixing back, and institute is a plain edition Huaihe River salt with salt, and Co., Ltd of Jiangsu Province's salt industry group produces, and brings moss when avoiding fish to change in the bucket into;
3. transportation: the density that keeps 3 tail cutter long-tailed anchovy/10L water in the carrying ladle, water level in the carrying ladle is that bucket is high by 4/7, micro-pore aeration oxygen-increasing device (the energy-efficient microporous pipe oxygen-increasing device of emerging moral board) is taked in the damage of avoiding the concussion in the transportation to cause in the transportation, haulage time is 40min.Before the storage pond, holding pond, earlier the water temperature in the fishpond is adjusted under the fish, when going into the pond, carrying ladle is tilted to 90 ° gently, slowly after bucket end direction, take out carrying ladle, change fish over to storage pond, holding pond near transportation pond water temperature.
3, support temporarily
Storage pond, holding pond is indoor cement pit, and area is at 20~40m
2, the depth of water is at 0.8~1.0m; Storage pond, holding pond water is that underground phreatic water in cultivation base and parent population are cultured the pond pond water, and both proportions are 3: 4; It is the bath of 0.1m/s that storage pond, holding pond keeps sufficient dissolved oxygen, suitable light and flow velocity.The cutter long-tailed anchovy density of supporting temporarily in the described storage pond, holding pond is 3 tails/300L water.
1-15 day in April, 2009, draw in the net to fish for, transport and support temporarily 3 batches of total 43 tail cutter long-tailed anchovy parent populations altogether, survival rate 100%.
Embodiment 2: a kind of pond of the present invention support cutter long-tailed anchovy parent population draw in the net fish for, transportation and method for temporarily cultivating, adopt the following processing step of supporting temporarily:
1, parent population draws in the net to fish for
1. time place: early morning on May 10th, 20 days 1 April in 2009,18 ℃ of pond water temperatures;
2. special netting gear: netting gear is made up of headline 1, float 2,10 order polyethylene screen cloths 3, bottom line 4, chain stubble 5.12 order polyethylene screen cloths 3 by raise to the higher plane of principle 1, bottom line 4 connects into the netting gear body, raise to the higher plane of principle 1 to be provided with many floats 2, on bottom line 4, be a long 1m every 0.5m, the chain stubble of heavy 1Kg;
3. draw in the net to fish for: keep the net sheet straight and upright when drawing in the net as far as possible, reduce the cutter long-tailed anchovy as far as possible and touch net, glue net; After parent population goes into the string bag, keep big water body, prevent the hairtail anoxic, and around the net sheet cutter long-tailed anchovy relatively concentration zones begin, connect fish tape water and change in the transportation bucket with basin.
2, parent population transportation
1. transport bucket: bucket adopts plastics to make, and is shaped as circle, and bucket diameter 70cm, inwall be the thin sponge of one deck fixedly;
2. transport water: get clean pond water after precipitating 2 hours, handle with salt, salinity is 6 ‰ in the water of mixing back, and institute is a plain edition Huaihe River salt with salt, and Co., Ltd of Jiangsu Province's salt industry group produces, and brings moss when avoiding fish to change in the bucket into;
3. transportation: the density that keeps 2 tail cutter long-tailed anchovy/10L water in the carrying ladle, water level in the carrying ladle is that bucket is high by 5/7, micro-pore aeration oxygen-increasing device (the energy-efficient microporous pipe oxygen-increasing device of emerging moral board) is taked in the damage of avoiding the concussion in the transportation to cause in the transportation, haulage time is 30min.Before the storage pond, holding pond, earlier the water temperature in the fishpond is adjusted under the fish, when going into the pond, carrying ladle is tilted to 90 ° gently, slowly after bucket end direction, take out carrying ladle, change fish over to storage pond, holding pond near transportation pond water temperature.
3, support temporarily
Storage pond, holding pond is indoor cement pit, and area is at 30m
2, the depth of water is at 0.9m; Storage pond, holding pond water is that underground phreatic water in cultivation base and parent population are cultured the pond pond water, and both proportions are 3: 4; It is the bath of 0.2m/s that storage pond, holding pond keeps sufficient dissolved oxygen, suitable light and flow velocity.The cutter long-tailed anchovy density of supporting temporarily in the described storage pond, holding pond is 2 tails/300L water.
4 batches of total 54 tail cutter long-tailed anchovy parent populations were drawn in the net to fish for, transport and supported temporarily on April 20th, 2009, survival rate 95% altogether to May 10.
Embodiment 3: a kind of pond of the present invention support cutter long-tailed anchovy parent population draw in the net fish for, transportation and method for temporarily cultivating, adopt the following processing step of supporting temporarily:
1, parent population draws in the net to fish for
1. time place: early morning on May 15th, 2009 to June 10,22 ℃ of water temperatures;
2. special netting gear: netting gear is made up of headline 1, float 2,10 order polyethylene screen cloths 3, bottom line 4, chain stubble 5.16 order polyethylene screen cloths 3 by raise to the higher plane of principle 1, bottom line 4 connects into the netting gear body, raise to the higher plane of principle 1 to be provided with many floats 2, on bottom line 4, be a long 1m every 0.5m, the chain stubble of heavy 1Kg;
3. draw in the net to fish for: keep the net sheet straight and upright when drawing in the net as far as possible, reduce the cutter long-tailed anchovy as far as possible and touch net, glue net; After parent population goes into the string bag, keep big water body, prevent the hairtail anoxic, and around the net sheet cutter long-tailed anchovy relatively concentration zones begin, connect fish tape water and change in the transportation bucket with basin.
2, parent population transportation
1. transport bucket: bucket adopts plastics to make, and is shaped as circle, and bucket diameter 80cm, inwall be the thin sponge of one deck fixedly;
2. transport water: get clean pond water after precipitating 3 hours, handle with salt, salinity is 7 ‰ in the water of mixing back, and institute is a plain edition Huaihe River salt with salt, and Co., Ltd of Jiangsu Province's salt industry group produces, and brings moss when avoiding fish to change in the bucket into;
3. transportation: the density that keeps 2 tail cutter long-tailed anchovy/10L water in the carrying ladle, water level in the carrying ladle is that bucket is high by 6/7, micro-pore aeration oxygen-increasing device (the energy-efficient microporous pipe oxygen-increasing device of emerging moral board) is taked in the damage of avoiding the concussion in the transportation to cause in the transportation, haulage time is 20min.Before the storage pond, holding pond, earlier the water temperature in the fishpond is adjusted under the fish, when going into the pond, carrying ladle is tilted to 90 ° gently, slowly after bucket end direction, take out carrying ladle, change fish over to storage pond, holding pond near transportation pond water temperature.
3, support temporarily
Storage pond, holding pond is indoor cement pit, and area is at 40m
2, the depth of water is at 1.0m; Storage pond, holding pond water is that underground phreatic water in cultivation base and parent population are cultured the pond pond water, and both proportions are 3: 4; It is the bath of 0.3m/s that storage pond, holding pond keeps sufficient dissolved oxygen, suitable light and flow velocity.The cutter long-tailed anchovy density of supporting temporarily in the described storage pond, holding pond is 1 tail/300L water.
4 batches of total 68 tail cutter long-tailed anchovy parent populations were drawn in the net to fish for, transport and supported temporarily on May 15th, 2009, survival rate 90% altogether to June 10.