CN104322411A - Technology for propagating and culturing neosalanx taihuensis in water area of subsidence area - Google Patents
Technology for propagating and culturing neosalanx taihuensis in water area of subsidence area Download PDFInfo
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- CN104322411A CN104322411A CN201410570909.0A CN201410570909A CN104322411A CN 104322411 A CN104322411 A CN 104322411A CN 201410570909 A CN201410570909 A CN 201410570909A CN 104322411 A CN104322411 A CN 104322411A
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- 229910052746 lanthanum Inorganic materials 0.000 claims description 6
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/10—Culture of aquatic animals of fish
- A01K61/17—Hatching, e.g. incubators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Farming Of Fish And Shellfish (AREA)
- Marine Sciences & Fisheries (AREA)
- Zoology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
Abstract
The invention discloses a technology for propagating and culturing neosalanx taihuensis in a water area of a subsidence area and belongs to the field of propagating and culturing commercial fishes. The technology comprises the following steps: mixing rare earth elements La, Rd and Pr at a mass ratio of 9:9:3 in a germ cell incubation period; dissolving with double distilled water until the volume is 10.0g/L, storing, diluting until the concentration is 3.0mg/L, and adding a neosalanx taihuensis incubator after each time fresh water replacement; feeding larval fishes by use of a three-section method, and putting algae at the later stage of incubation; putting 70% of rotifers, 15% of algae and 15% of copepoda in the flat swimming period; putting 70% of remiped cladocerans, 20% of rotifer and 10% of algae in the front stage of putting; after the larval fish feeding period is finished, putting fish fries into a water surface of a huainan subsidence area, wherein the fish fries are put into multiple putting places at the same time. The technology is capable of shortening the neosalanx taihuensis incubation time, improving the success rate, achieving good growth vigor in the larval fish feeding period and laying a foundation for successful large-scale transplantation of neosalanx taihuensisin in the water area of the subsidence area according to the water area condition of the huainan subsidence area.
Description
Technical field
The invention belongs to the numerous foster technical field of economic fish, more particularly, relate to the numerous foster technology in a kind of neosalanx taihuensis subsided water area.
Background technology
Neosalanx taihuensis, (Neosalanx taihue Chen), noodles fish, face barracouta, Salangidae, Neosalanx, body is elongated, nearly cylindrical shape, and back segment is slightly flat-sided, body is about 12 centimetres, and head is extremely flat, and eye is large, mouth is also large, and kiss is long and sharp, triangular in shape, body is soft without squama, and whole body is transparent, and Postmortem is creamy white.Neosalanx taihuensis is pure fresh-water fishes, moves in throughout one's life in lake, take zooplankton as staple food, also eats a small amount of shrimp and fry.Silverfish is annual, and namely half a year reach sexual maturity, 1 age in winter parent population can breed, the egg-laying period is the 4-5 month, just dead soon after reproduction.Silverfish has dried up just dead feature so be not suitable for long-distance transport, high to water quality requirement, the incubating oosperm time long (40-50 days), and neosalanx taihuensis belongs to and escorts type middle level without parent and to lay eggs type, sinking property of ovum, be easy to be covered by mud and be subject to the dangerous incubation rate of other fish predations very low because fertilized egg sinks to the bottom after laying eggs in middle level, bring a difficult problem so transplant to neosalanx taihuensis.Silverfish nutritive value and economic worth are all very high, it is important economic fish, silverfish is responsive and be swift in response to environmental change, and Population Dynamic is fast, defines the abundant diversity of the Ecology such as feeding habits, Growth and reproduction feature between its kind in very long evolutionary process.But the silverfish natural resources of China but because reclaiming land from a lake, overfishing, the impact of the many factors such as environmental pollution and Habitat Fragmentation and continuous downturn, the natural resources of various silverfish decline all to some extent, species distribution scope significantly reduces, and indivedual species are gradually endangered.(Hu Jun etc. " distribution of China's Icefish Resource and machining profile " 2010) although in display from the eighties in 20th century so far, the large-scale water system of 27 provinces (city) throughout the country except Tibet and Taiwan has all carried out the extensive transplanting of silverfish, but obtain the few of distinct economic, success rate is less than 30%.Cause the reason of silverfish graft failure to have a lot, wherein lack research to silverfish biological property, be short in understanding to introducing water system feature ecology, migration process management is ineffective, final-period management shortcoming etc. is common reason.
Huainan field proved reserves 15,300,000,000 tons, by the production capacity of annual 100000000 tons, can exploit about 150 years.Coal is the advantage place in Huainan, and within the quite a long time, be unable to do without coal, this is also national energy strategic demand.Due to the exploitation of a large amount of coal; Huainan defines large-area subsided water area; the biological characteristics fully understanding silverfish seek peace subsided water area, Huainan eco environment facto prerequisite under; if silverfish group can be transplanted into subsidence area, Huainan, all there is Special Significance by the protection of silverfish species resource and the raising of Huainan local economy.China silverfish is transplanted and all carries out testing and promoting, subsided water area circumstance complication always in the middle of large reservoir and lake, and water surface area is comparatively large, and water quality is special, and neosalanx taihuensis successful story is not almost transplanted in nationwide.
Summary of the invention
1. invent the technical problem that will solve
For the problems referred to above, propose the numerous foster technology in a kind of neosalanx taihuensis subsided water area of the present invention, mainly will solve three difficult problems: the first, the long and problem that success rate is low of the brooding time of neosalanx taihuensis fish-egg; The second, neosalanx taihuensis live food supply problem; 3rd, neosalanx taihuensis is at the input feeding problem of subsided water area.Adopt technical scheme of the present invention, the brooding time of neosalanx taihuensis shortens, incubation rate improves effectively, use three section type feeding patterns, namely different periods is to the different bait of anchovies, can scientific and effective guarantee neosalanx taihuensis normal individual growth required for nutrition supply, promote the quick growth of prelarva, and it is final for subsided water area, utilize new implantation technique, in conjunction with the life habit of subsided water area water quality characteristics and silverfish, neosalanx taihuensis is transplanted to subsided water area, Huainan, be conducive to further large-scale farming and promote.
2. technical scheme
For achieving the above object, technical scheme provided by the invention is:
The numerous foster technology in a kind of neosalanx taihuensis subsided water area of the present invention, comprise incubating oosperm, prelarva feeds and fry throws in nursing, by rare-earth elements of lanthanum (La) during incubating oosperm, rubidium (Rd), praseodymium (Pr) mixes according to the mass ratio of 9:9:3, distilled water dissolves and is settled to 10.0g/L storage, then adds after renewing water with the above-mentioned solution of the concentration dilution of 3.0mg/L at every turn;
Prelarva is fed and adopts three section type to feed, be divided into the hatching later stage: neosalanx taihuensis brooding time is about 30-40 days, when the 20th day of incubation period, the food starting to carry out first phase section was thrown in, when namely growing 20 days from fertilized egg, to at the end of neosalanx taihuensis incubation period is basic, wherein, input food is algae, algae comprises: chlamydomonas, rhombus algae, chlorella, blue-green algae;
The flat trip phase: after having hatched, originally can only carry out level and move about, this phase is the flat trip phase, and the flat trip phase continues 10-20 days, and throwing in food wheel animalcule during this is that master accounts for 70%, suitably adds algae 15% and copepoda 15%; Because there are some researches show, in this period, Salangidae species are food mainly with wheel animalcule;
Throw in early stage: the 10-20 days after the flat trip phase completes, larvae growth is tending towards ripe substantially, can travellingly freely in water look for food, digestive system is progressively reached maturity, can to take food some slightly large crustaceans, as copepoda and cladocera, to throw in food oar foot cladocera and account for 70%, rotifers accounts for 20%, and algae accounts for 10%; There are some researches show, copepoda and cladocera are the Major Foods in this period of neosalanx taihuensis.
Fed by the segmented in three periods, across time be about 40-50 days, now neosalanx taihuensis has completed the growth of larval stages substantially, there is certain oneself to look for food ability, and there is stronger adaptive capacity to environment, now may be used for the input cultivation of water field of big area, it is throw in into subsided water area, Huainan by neosalanx taihuensis prelarva that fry throws in nursing, throw in the arm that have stone matter chiltern at the bottom of of the ground point selection depth of water at 1.5 ~ 2.5m, multiple release position is thrown in simultaneously.
To further improvement of the present invention, incubating oosperm carries out in neosalanx taihuensis incubator, described neosalanx taihuensis incubator comprises vessel, firing equipment, oxygenation equipment, control light device, gauze layer and fine sand layer, vessel are brownish black or brown glass goods, and vessel hold water volume at 3-5L; With the vessel 3 days of quicklime soaking disinfection neosalanx taihuensis incubator, then soak fine sand, gauze, firing equipment, oxygenation equipment and control light device 20 minutes with the saline solution of 5%, be then exposed to the sun 1 day, complete and disinfect.After the sterilization of neosalanx taihuensis incubator each several part, the fine sand being equipped with 0.5 cm thick bottom vessel forms fine sand layer, lays 2 layers of gauze and form gauze layer, for simulating the attachment of lakebed environment and fish-egg on fine sand layer; In vessel, place firing equipment and oxygenation equipment, vessel open place covers control light device, adds the running water of 3-4L after shelving 1 day and prepare hatching in vessel.
To further improvement of the present invention, in incubating oosperm process fertilized egg in neosalanx taihuensis incubator, daylight controls at 2-4 hour every day, all the other use dark or low-light process, regulate room conditioning and firing equipment, the gentle water temperature in control room is all between 10-15 degree, fish-egg is grown at the temperature of 10-15 degree, and in vessel, the water frequency of changing of water is once a day, changes water degree 100%.Neosalanx taihuensis incubator prepares two, one for hatching, another one as rotation uses for subsequent use, every about a 10d replacing neosalanx taihuensis incubator, the sterilization of neosalanx taihuensis incubator is ready before changing.
To further improvement of the present invention, it is thrown in behind subsided water area, Huainan by fry that fry throws in nursing, adopts nature to supply with manually supplying the mode combined feeds neosalanx taihuensis:
1. naturally supply
A, neosalanx taihuensis is that food mainly contains all the life with zooplankton, also the Microcystis aeruginosa and green alga that observe minute quantity is had, be specially copepoda and cladocera is main, having abundant rainfall in subsidence area with regard to making rainwash bring ground organic matter into subsided water area these organic matters constantly flowed in a large number is that subsided water area provides large number of biological fertilizer, can supply plankton growth thus provide sufficient food bait for new silverfish;
B, has a large amount of water plants based on floating plant and mesophyte in subsided water area, these plants can be hidden oneself for new silverfish provides habitat that silverfish also can be helped to hide natural enemy;
C, subsided water area area is large, water quality condition good, this area's rainfall is abundant, this is formed with great role to silverfish group, certain positive correlation is had according to annual production and waters water level about studying silverfish, subsidence area, Huainan water level throughout the year substantially constant, rainfall and water surface area does not all have large fluctuation, provides water area condition to the successful implantation of silverfish;
D, subsided water area area is larger, can a suitable small enclosed lake phase, inside there is predacious fish unavoidably, but silverfish is fish and subsidence area water can reach more than ten meter more deeply at the middle and upper levels, this just can produce waters layering comparatively clearly, and the contact of silverfish and other predacious fish is reduced, then has subsidence area water quality condition substantially to reach the growth of I class water standard to silverfish to have positive role;
E, establishment officer makes regular check on detection water area water-quality, water temperature, biomass, dissolved oxygen, mineral salt, ph, and fish for observation whether have silverfish occur and to occur silverfish group carry out propagation protect.
2. manually supply
Organic matter fermentation product fixed point is thrown in: specific practice is the organic matter that will gather, as leaf stalk excrement of animals etc. is deposited in the shallow hole dug in advance, then cover plastic film and ferment about 10 days rear (can not see shaping organic matter for standard), being transported to transplant by product canoe after fermentation has the subsided water area of neosalanx taihuensis to splash, and the amount of splashing is every mu of 1kg.
To further improvement of the present invention, neosalanx taihuensis is transplanted successfully laggard row and to be fished for autumn and adopt single boat trawl catch or carry out lamp light trapping.
3. beneficial effect
Adopt technical scheme provided by the invention, compared with prior art, there is following remarkable result:
(1) the numerous foster technology in a kind of neosalanx taihuensis subsided water area of the present invention, by the hatching of new lucifuge and the method for adding rare earth, effectively can shorten brooding time, by our comparative trial, adopt rare-earth elements of lanthanum (La), rubidium (Rd), praseodymium (Pr) mixes according to the mass ratio of 9:9:3, distilled water dissolves and is settled to 10.0g/L storage, then with the method that the above-mentioned solution of the concentration dilution of 3.0mg/L adds after renewing water at every turn, effectively can promote the hatching of fish-egg, compared with conventional method, brooding time obviously shortens 3-10 days; And with disinfect mode efficiently and use simultaneously, effectively can reduce lethality, increase incubation rate, incubation rate by traditional 50-60%, can bring up to 70%-85%.
(2) the numerous foster technology in a kind of neosalanx taihuensis subsided water area of the present invention, segmented according to neosalanx taihuensis development characteristics throws in feeding manner, scientificlly and effectively throw in food, effectively can improve incubation rate and reduce lethality, promote the quick growth of prelarva, compared with traditional method, the development growth phase of about 60d, the young fish length that new method obtains can reach the 1.1-1.5 of conventional method doubly; The neosalanx taihuensis prelarva that new method obtains is individual large, strong adaptability, and they, when throwing in, effectively can improve the survival rate of input.
(3) the numerous foster technology in a kind of neosalanx taihuensis subsided water area of the present invention, implement when fully have studied various ecological factor and the water wave water quality of these specific bodies of water of subsidence area, Huainan, because there is region in other waters, the whole nation, and subsided water area circumstance complication, water surface area is larger, water quality is special, neosalanx taihuensis successful story is not almost transplanted in nationwide, present invention incorporates various factors in subsided water area, Huainan, subsided water area water quality characteristics and silverfish life habit are organically combined, the neosalanx taihuensis hatching feeding patterns that must make new advances, achieve the transplanting of subsided water area, neosalanx taihuensis Huainan, and be that the popularization of further large-scale farming lays the foundation.
Accompanying drawing explanation
Fig. 1 is neosalanx taihuensis incubator;
Fig. 2 is neosalanx taihuensis prelarva three section type feeding patterns.
Label declaration in schematic diagram:
1, vessel; 2, firing equipment; 3, oxygenation equipment; 4, light device is controlled; 5, gauze layer; 6, fine sand layer.
Embodiment
For understanding content of the present invention further, by reference to the accompanying drawings and embodiment this invention is described in detail.
Embodiment 1
The numerous foster technology in a kind of neosalanx taihuensis subsided water area of the present embodiment, comprise incubating oosperm, prelarva feeds and fry throws in nursing, described incubating oosperm carries out in neosalanx taihuensis incubator, neosalanx taihuensis incubator comprises vessel 1, firing equipment 2, oxygenation equipment 3, control light device 4, gauze layer 5 and fine sand layer 6, vessel 1 are brownish black glassware, and vessel 1 hold water volume at 3L.Quicklime soaking disinfection vessel 13 days are used in the sterilization of neosalanx taihuensis incubator, then soak fine sand, gauze, firing equipment 2, oxygenation equipment 3 and control light device 420 minutes with the saline solution of 5%, are then exposed to the sun 1 day, complete and disinfect.After the sterilization of neosalanx taihuensis incubator each several part, the fine sand being equipped with 0.5 cm thick bottom vessel 1 forms fine sand layer 6, lays 2 layers of gauze and form gauze layer 5, for simulating the attachment of lakebed environment and fish-egg on fine sand layer 6; In vessel 1, place firing equipment 2 and oxygenation equipment 3, vessel 1 opening part covers control light device 4 (as shown in Figure 1), adds 3L and prepare hatching through shelving the running water after 1 day in vessel 1.In incubating oosperm process fertilized egg in neosalanx taihuensis incubator, daylight controls at 2 hours every day, all the other use dark processing, regulate room conditioning and firing equipment 2, the gentle water temperature in control room is all between 12 degree, fish-egg is grown at the temperature of 12 degree, in vessel 1, the water frequency of changing of water is once a day, changes water degree 100%.Neosalanx taihuensis incubator prepares two, one for hatching, another one as rotation use for subsequent use, every about 10d changes a neosalanx taihuensis incubator, carries out sterilization preparation in advance before replacing, in addition, by rare-earth elements of lanthanum La during incubating oosperm, rubidium Rd, praseodymium Pr mix according to the mass ratio of 9:9:3, distilled water dissolves and is settled to 10.0g/L storage, adds after then renewing water with the above-mentioned solution of the concentration dilution of 3.0mg/L at every turn.
Prelarva is fed and adopts three section type to feed (as shown in Figure 2), be divided into the hatching later stage: neosalanx taihuensis brooding time is about 30-40 days, when the 20th day of incubation period, the food starting to carry out first phase section was thrown in, and namely grew 20d at the end of neosalanx taihuensis incubation period is basic from fertilized egg, wherein, input food is algae, and algae comprises: chlamydomonas, rhombus algae, chlorella, blue-green algae etc.;
The flat trip phase: after having hatched, originally can only carry out level and move about, this phase is the flat trip phase, and the flat trip phase continues 10-20 days, and throwing in food wheel animalcule during this is that master accounts for 70%, suitably adds algae 15% and copepoda 15%; Because there are some researches show, in this period, Salangidae species are food mainly with wheel animalcule;
Throw in early stage: the 10-20 days after the flat trip phase completes, larvae growth is tending towards ripe substantially, can travellingly freely in water look for food, digestive system is progressively reached maturity, can to take food some slightly large crustaceans, as copepoda and cladocera, to throw in food oar foot cladocera and account for 70%, rotifers accounts for 20%, and algae accounts for 10%; There are some researches show, copepoda and cladocera are the Major Foods of neosalanx taihuensis adulthood.
By the nursing in three periods, across time be about 40-50d; Now neosalanx taihuensis has completed the growth of larval stages substantially, there is certain oneself to look for food ability, and there is stronger adaptive capacity to environment, now may be used for the input cultivation of water field of big area, fry is thrown in feed and throws in into subsidence area, the Huainan water surface by neosalanx taihuensis prelarva, throw in the arm that have stone matter chiltern at the bottom of of the ground point selection depth of water at 1.5m, multiple release position is thrown in simultaneously.
Fry is thrown in behind subsided water area, Huainan, employing nature is given with manually supplying the mode combined feeds neosalanx taihuensis altogether, artificial supply specific practice is deposited in the shallow hole dug in advance by as several in leaf stalk excrement of animals etc. for the organic matter gathered, then cover plastic film to ferment 10 days, being transported to transplant by product canoe after fermentation after can not see shaping organic matter has the subsided water area of neosalanx taihuensis to splash, and the amount of splashing is every mu of 1kg.Neosalanx taihuensis is transplanted successfully laggard row and to be fished for autumn and adopt single boat trawl to catch.
Embodiment 2
The numerous foster technology in a kind of neosalanx taihuensis subsided water area of the present embodiment, comprise incubating oosperm, prelarva feeds and fry throws in nursing, described incubating oosperm carries out in neosalanx taihuensis incubator, neosalanx taihuensis incubator comprises vessel 1, firing equipment 2, oxygenation equipment 3, control light device 4, gauze layer 5 and fine sand layer 6, vessel 1 are brown glass goods, and vessel 1 hold water volume at 4L.Quicklime soaking disinfection vessel 13 days are used in the sterilization of neosalanx taihuensis incubator, then soak fine sand, gauze, firing equipment 2, oxygenation equipment 3 and control light device 420 minutes with the saline solution of 5%, are then exposed to the sun 1 day, complete and disinfect.After the sterilization of neosalanx taihuensis incubator each several part, the fine sand being equipped with 0.5 cm thick bottom vessel 1 forms fine sand layer 6, lays 2 layers of gauze and form gauze layer 5, for simulating the attachment of lakebed environment and fish-egg on fine sand layer 6; In vessel 1, place firing equipment 2 and oxygenation equipment 3, vessel 1 opening part covers control light device 4 (as shown in Figure 1), adds 3.5L and prepare hatching through shelving the running water after 1 day in vessel 1.In incubating oosperm process fertilized egg in neosalanx taihuensis incubator, daylight controls at 2.5 hours every day, all the other use low-light process, regulate room conditioning and firing equipment 2, the gentle water temperature in control room is all between 15 degree, fish-egg is grown at the temperature of 15 degree, in vessel 1, the water frequency of changing of water is once a day, changes water degree 100%.Neosalanx taihuensis incubator prepares two, one for hatching, another one as rotation use for subsequent use, every about 10d changes a neosalanx taihuensis incubator, carries out sterilization preparation in advance before replacing, in addition, by rare-earth elements of lanthanum La during incubating oosperm, rubidium Rd, praseodymium Pr mix according to the mass ratio of 9:9:3, distilled water dissolves and is settled to 10.0g/L storage, adds after then renewing water with the above-mentioned solution of the concentration dilution of 3.0mg/L at every turn.
Prelarva is fed and adopts three section type to feed (as shown in Figure 2), be divided into the hatching later stage: neosalanx taihuensis brooding time is about 30-40 days, when the 20th day of incubation period, the food starting to carry out first phase section was thrown in, namely from fertilized egg growth 20d, to at the end of neosalanx taihuensis incubation period is basic, wherein, input food is algae, algae comprises: chlamydomonas, rhombus algae, chlorella, blue-green algae etc.;
The flat trip phase: after having hatched, originally can only carry out level and move about, this phase is the flat trip phase, and the flat trip phase continues 10-20 days, and throwing in food wheel animalcule during this is that master accounts for 70%, suitably adds algae 15% and copepoda 15%; Because there are some researches show, in this period, Salangidae species are food mainly with wheel animalcule;
Throw in early stage: the 10-20 days after the flat trip phase completes, larvae growth is tending towards ripe substantially, can travellingly freely in water look for food, digestive system is progressively reached maturity, can to take food some slightly large crustaceans, as copepoda and cladocera, to throw in food oar foot cladocera and account for 70%, rotifers accounts for 20%, and algae accounts for 10%; There are some researches show, copepoda and cladocera are the Major Foods of neosalanx taihuensis adulthood.
By the nursing in three periods, across time be about 40-50d; Now neosalanx taihuensis has completed the growth of larval stages substantially, there is certain oneself to look for food ability, and there is stronger adaptive capacity to environment, now may be used for the input cultivation of water field of big area, fry is thrown in feed and throws in into subsidence area, the Huainan water surface by neosalanx taihuensis prelarva, throw in the arm that have stone matter chiltern at the bottom of of the ground point selection depth of water at 2.2m, multiple release position is thrown in simultaneously.
Fry is thrown in behind subsided water area, Huainan, employing nature is given with manually supplying the mode combined feeds neosalanx taihuensis altogether, artificial supply specific practice is deposited in the shallow hole dug in advance by as several in leaf stalk excrement of animals etc. for the organic matter gathered, then cover after plastic film ferments 15 days, being transported to transplant by product canoe after fermentation after can not see shaping organic matter has the subsided water area of neosalanx taihuensis to splash, and the amount of splashing is every mu of 1kg.Neosalanx taihuensis is transplanted successfully laggard row and is fished for employing lamp light trapping autumn.
Embodiment 3
The numerous foster technology in a kind of neosalanx taihuensis subsided water area of the present embodiment, comprise incubating oosperm, prelarva feeds and fry throws in nursing, described incubating oosperm carries out in neosalanx taihuensis incubator, neosalanx taihuensis incubator comprises vessel 1, firing equipment 2, oxygenation equipment 3, control light device 4, gauze layer 5 and fine sand layer 6, vessel 1 are brownish black glassware, and vessel 1 hold water volume at 5L.Quicklime soaking disinfection vessel 13 days are used in the sterilization of neosalanx taihuensis incubator, then soak fine sand, gauze, firing equipment 2, oxygenation equipment 3 and control light device 420 minutes with the saline solution of 5%, are then exposed to the sun 1 day, complete and disinfect.After the sterilization of neosalanx taihuensis incubator each several part, the fine sand being equipped with 0.5 cm thick bottom vessel 1 forms fine sand layer 6, lays 2 layers of gauze and form gauze layer 5, for simulating the attachment of lakebed environment and fish-egg on fine sand layer 6; In vessel 1, place firing equipment 2 and oxygenation equipment 3, vessel 1 opening part covers control light device 4 (as shown in Figure 1), adds 4L and prepare hatching through shelving the running water after 1 day in vessel 1.In incubating oosperm process fertilized egg in neosalanx taihuensis incubator, daylight controls at 4 hours every day, all the other use dark processing, regulate room conditioning and firing equipment 2, the gentle water temperature in control room is all between 10 degree, fish-egg is grown at the temperature of 10 degree, in vessel 1, the water frequency of changing of water is once a day, changes water degree 100%.Neosalanx taihuensis incubator prepares two, one for hatching, another one as rotation use for subsequent use, every about 10d changes a neosalanx taihuensis incubator, carries out sterilization preparation in advance before replacing, in addition, by rare-earth elements of lanthanum La during incubating oosperm, rubidium Rd, praseodymium Pr mix according to the mass ratio of 9:9:3, distilled water dissolves and is settled to 10.0g/L storage, adds after then renewing water with the above-mentioned solution of the concentration dilution of 3.0mg/L at every turn.
Prelarva is fed and adopts three section type to feed (as shown in Figure 2), be divided into the hatching later stage: neosalanx taihuensis brooding time is about 30-40 days, when the 20th day of incubation period, the food starting to carry out first phase section was thrown in, namely from fertilized egg growth 20d, to at the end of neosalanx taihuensis incubation period is basic, wherein, input food is algae, algae comprises: chlamydomonas, rhombus algae, chlorella, blue-green algae etc.;
The flat trip phase: after having hatched, originally can only carry out level and move about, this phase is the flat trip phase, and the flat trip phase continues 10-20 days, and throwing in food wheel animalcule during this is that master accounts for 70%, suitably adds algae 15% and copepoda 15%; Because there are some researches show, in this period, Salangidae species are food mainly with wheel animalcule;
Throw in early stage: the 10-20 days after the flat trip phase completes, larvae growth is tending towards ripe substantially, can travellingly freely in water look for food, digestive system is progressively reached maturity, can to take food some slightly large crustaceans, as copepoda and cladocera, to throw in food oar foot cladocera and account for 70%, rotifers accounts for 20%, and algae accounts for 10%; There are some researches show, copepoda and cladocera are the Major Foods of neosalanx taihuensis adulthood.
By the nursing in three periods, across time be about 40-50d; Now neosalanx taihuensis has completed the growth of larval stages substantially, there is certain oneself to look for food ability, and there is stronger adaptive capacity to environment, now may be used for the input cultivation of water field of big area, fry is thrown in feed and throws in into subsidence area, the Huainan water surface by neosalanx taihuensis prelarva, throw in the arm that have stone matter chiltern at the bottom of of the ground point selection depth of water at 2.5m, multiple release position is thrown in simultaneously.
Fry is thrown in behind subsided water area, Huainan, employing nature is given with manually supplying the mode combined feeds neosalanx taihuensis altogether, artificial supply specific practice is deposited in the shallow hole dug in advance by as several in leaf stalk excrement of animals etc. for the organic matter gathered, then cover plastic film to ferment 8 days, being transported to transplant by product canoe after fermentation after can not see shaping organic matter has the subsided water area of neosalanx taihuensis to splash, and the amount of splashing is every mu of 1kg.Neosalanx taihuensis is transplanted successfully laggard row and to be fished for autumn and adopt single boat trawl catch or carry out lamp light trapping.
Schematically above be described the present invention and embodiment thereof, this description does not have restricted, yet just one of the embodiments of the present invention shown in accompanying drawing, is actually not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the invention aim, designing the frame mode similar to this technical scheme and embodiment without creationary, all should protection scope of the present invention be belonged to.
Claims (8)
1. the numerous foster technology in neosalanx taihuensis subsided water area, comprises incubating oosperm, prelarva feeds and fry throws in nursing, it is characterized in that:
Described incubating oosperm is by rare-earth elements of lanthanum (La) between its incubation period, rubidium (Rd), praseodymium (Pr) mixes according to the mass ratio of 9:9:3, distilled water dissolves and is settled to 10.0g/L storage, then adds after renewing water with the above-mentioned solution of the concentration dilution of 3.0mg/L at every turn;
Described prelarva is fed and adopts three section type to feed, and is divided into (1) to hatch the later stage: input food is algae; (2) the flat trip phase: throwing in food wheel animalcule is that master accounts for 70%, algae 15% and copepoda 15%; (3) early stage is thrown in: throw in food oar foot cladocera and account for 70%, rotifers accounts for 20%, and algae accounts for 10%;
Described fry is thrown in feed and throws in into subsided water area, Huainan by neosalanx taihuensis prelarva, and throw in the arm that have stone matter chiltern at the bottom of of the ground point selection depth of water at 1.5 ~ 2.5m, multiple release position is thrown in simultaneously.
2. the numerous foster technology in a kind of neosalanx taihuensis subsided water area according to claim 1, it is characterized in that: described incubating oosperm carries out in neosalanx taihuensis incubator, described neosalanx taihuensis incubator comprises vessel (1), firing equipment (2), oxygenation equipment (3), control light device (4), gauze layer (5) and fine sand layer (6), vessel (1) are brownish black or brown glass goods, and vessel (1) hold water volume at 3-5L; The preparation method of neosalanx taihuensis incubator is, after each several part is sterilized, the fine sand being equipped with 0.5 cm thick in vessel (1) bottom forms fine sand layer (6), on fine sand layer (6), lay 2 layers of gauze form gauze layer (5), firing equipment (2) and oxygenation equipment (3) is placed in vessel (1), vessel (1) opening part covers control light device (4), adds 3-4L and prepare hatching through shelving the running water after 1 day in vessel (1).
3. the numerous foster technology in a kind of neosalanx taihuensis subsided water area according to claim 2, it is characterized in that: in described incubating oosperm process fertilized egg in neosalanx taihuensis incubator, daylight controls at 2-4 hour every day, all the other use dark or low-light process, regulate room conditioning and firing equipment (2), the gentle water temperature in control room is all between 10-15 degree, fish-egg is grown at the temperature of 10-15 degree, the water frequency of changing of vessel (1) interior water is once a day, changes water degree 100%.
4. the numerous foster technology in a kind of neosalanx taihuensis subsided water area according to claim 3, it is characterized in that: the method for neosalanx taihuensis incubator sterilization uses quicklime soaking disinfection vessel (1) 3 day, fine sand, gauze, firing equipment (2), oxygenation equipment (3) and control light device is soaked (4) 20 minutes again with the saline solution of 5%, then be exposed to the sun 1 day, complete and disinfect.
5. the numerous foster technology in a kind of neosalanx taihuensis subsided water area according to claim 4, it is characterized in that: neosalanx taihuensis incubator prepares two, one for hatching, another one as rotation uses for subsequent use, every about a 10d replacing neosalanx taihuensis incubator.
6. the numerous foster technology in a kind of neosalanx taihuensis subsided water area according to claim 1 to 5 any one, it is characterized in that: it is thrown in behind subsided water area, Huainan by fry that described fry throws in nursing, adopt nature to supply with manually supplying the mode combined feeds neosalanx taihuensis.
7. the numerous foster technology in a kind of neosalanx taihuensis subsided water area according to claim 6, it is characterized in that: artificial supply specific practice be by gather in the shallow hole dug in advance, then cover after plastic film ferments about 10 days, being transported to transplant by product canoe after fermentation after can not see shaping organic matter has the subsided water area of neosalanx taihuensis to splash, and the amount of splashing is every mu of 1kg.
8. the numerous foster technology in a kind of neosalanx taihuensis subsided water area according to claim 7, is characterized in that: neosalanx taihuensis is transplanted successfully laggard row and to be fished for autumn and adopt single boat trawl catch or carry out lamp light trapping.
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