CN102613119B - Method for transferring larimichthys crocea fries quickly - Google Patents
Method for transferring larimichthys crocea fries quickly Download PDFInfo
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- CN102613119B CN102613119B CN201210103560.0A CN201210103560A CN102613119B CN 102613119 B CN102613119 B CN 102613119B CN 201210103560 A CN201210103560 A CN 201210103560A CN 102613119 B CN102613119 B CN 102613119B
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- 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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Abstract
The invention discloses a method for transferring larimichthys crocea fries quickly. For the larimichthys crocea fries that are cultured indoors and are 40-50 days in age and 2.5-4.0 cm in overall length, a flashlight is directed at the water drainage end of a fry culture pool, and other parts of the fry culture pool are covered by black cloth, so that the larimichthys crocea fries gather at a smaller corner of the water drainage end with light by using the characteristics of phototaxis and gregariousness of the larimichthys crocea fries; the gathered fries are siphoned to a water body of a fry storage cabin of a perforated ship with enriched oxygen or directly transferred to a fish raft at sea; and in addition, a water flowing mode is adopted at the water inlet end of the fry culture pool in the siphoning process, the water level in the fry culture pool is kept unchanged, and most fries in the fry culture pool are siphoned out of the fry culture pool till the fries gather difficultly.
Description
Technical field
The present invention relates to the transfer of a kind of fry, especially relate to the method for Pseudosciaena crocea Fry fast transfer.
Background technology
Large yellow Crocker (
larimichthys crocea) be one of the Marine Cage-culture Fishes of the current maximum-norm of China and eight large advantages outlet aquaculture products, the Pseudosciaena crocea Fry of breeding every year can exceed 1,000,000,000 tails, the status being always in a leading position in China's mariculture industry.In the process of cultivating at Pseudosciaena crocea Fry, being transferred to fishing row temporarily foster (being commonly called as " emerging ") from indoor culture pond is the important stage that Pseudosciaena crocea Fry is bred, and is also the process that Pseudosciaena crocea Fry is accepted natural sea-water natural selection.Science and efficiently transfer method are one of Pseudosciaena crocea Fry important technologies of breeding.Thereby, in the process of Pseudosciaena crocea Fry fast transfer, how to improve its survival rate extremely important.
At present, the common way that Pseudosciaena crocea Fry shifts is: the seawater in nursery pond is drained into the about 30-50cm depth of water, utilize black cloth that fry is become to light to one jiao of nursery pond, then utilize bucket that the Pseudosciaena crocea Fry of cluster is progressively pulled out, manually or through the tractor that is equipped with oxygen increasing equipment be transported in perforated ship, be transported near marine fishing row by perforated ship, then removed to net cage and support temporarily.This kind of method is subject to tidewater restriction, not only needs a large amount of man power and materials, and the fry that often shifts a bite nursery pond needs nearly ten people's one biconditional operations, and consuming timely reaches approximately 1 hour.In addition, large yellow Crocker belongs to the very weak fish of anti-stress ability, so operation need through dragging for seedling, fill seedling, choose seedling, the seedling of going on board down, multiple links such as go ashore, Pseudosciaena crocea Fry is upset, body surface secretes a large amount of mucus, the dissolved oxygen in water is often very deficient; And for washing mucus open, need pour fry into running water cabin or fishing row net cage from eminence.In addition indoor raising of seedling pond and perforated ship still have long segment distance, a large amount of fries are placed in to a slight bucket, therefore there is hypoxia death in many fries, has affected survival rate, the more important thing is that the Pseudosciaena crocea Fry that is transported to fishing row is prone to the dead and lopsided of larger proportion.Finally, nursery pond remains more fry and fails to be fished for because of normal cluster, also causes waste to a certain degree.
Summary of the invention
In order to overcome above shortcomings part in said method, the object of the present invention is to provide a kind of method of Pseudosciaena crocea Fry fast transfer.Be intended to reduce the abnormal rate of labour intensity and seed, reduce seedling-growing time and a dead lift cost, improve the weed survival rate of emerging.
In order to reach above-mentioned object, the present invention adopts following concrete technical scheme: a kind of method of Pseudosciaena crocea Fry fast transfer.The present invention includes following steps:
(1) means of transport is prepared: perforated ship is filled to seedling cabin and fill seawater, keep inflated condition;
(2) seed is concentrated: nursery pond draining to the depth of water is 30-50cm, stops inflation, utilizes torch to aim at nursery pond discharge ends and hides other parts of growing seedlings with black cloth, and Pseudosciaena crocea Fry is concentrated in the less corner of discharge ends of the nursery pond of illumination;
(3) siphon is emerged: adopt the siphon pipe that diameter is suitable to utilize difference in height that seed siphon is filled to perforated ship the water body in seedling cabin from the discharge ends of nursery pond, adopt pipeline mode at nursery pond water inlet simultaneously, keep larval rearing water invariant position, until the more difficult cluster of fry.
Described siphon pipe adopts the transparent polyethylene pipe that diameter is 50～75mm, inner wall smooth, and its length is greater than the distance of nursery pond to perforated ship.
Described nursery pond and perforated ship difference in height are 2-10m.Described Pseudosciaena crocea Fry is the fry that 40-50 age in days specification is 2.5-4.0cm, seedling body stalwartness.
Compared with existing seedling growing technology, the present invention has following outstanding advantages and effect:
1, save manpower and reduce labour intensity: emerging and do not need a large amount of manpowers to go to carry under fry in perforated ship, greatly reduce labour intensity, the a bite of simultaneously emerging pond only needs 5 people to operate simultaneously, and prior art is 10 people of the next needs of similarity condition.
2, seedling-growing time is short: general a bite pond only needs the 10-15min can be by more than 99% fry siphon to perforated ship, and prior art needs nearly 1 hour.
3, go out shoot survival percent high: prior art adopts the carrying of bucket high density relatively, and fry is pushed mutually, secretes a large amount of mucus, in siphon pipe of the present invention, there are more sufficient water and oxygen, the mucus of Pseudosciaena crocea Fry secretion, by Macrodilution, even can be ignored, and has prevented the hypoxia death of fry.
4, reduce the abnormal rate of fry: reduced a dead lift link, reduced the irritability of fry, thereby its irritability is less, reduced the abnormal rate of fry.
Embodiment
embodiment mono-:
Experiment basis condition: (1), with two mouthfuls of nursery ponds criticizing, every mouthful of specification 8m × 4m × 1.6m, deposits seedling amount approximately 1,500,000 tails, the average 3.4cm of seed 45 age in days specification total length.(2) the present invention is by 5 people's co-operate, and prior art go out seedling-growing method by 10 people's co-operate.
Experimental procedure of the present invention is as follows:
(1) means of transport is prepared: perforated ship is filled to seedling cabin and fill seawater, keep inflated condition;
(2) seed is concentrated: nursery pond draining to the depth of water is 30cm, stops inflation, utilizes torch to aim at nursery pond discharge ends and hides other parts of growing seedlings with black cloth, and Pseudosciaena crocea Fry is concentrated in the less corner of discharge ends of the nursery pond of illumination;
(3) siphon is emerged: the siphon pipe that adopts diameter 60mm and inner wall smooth from the discharge ends of nursery pond by seed siphon to (nursery pond and perforated ship difference in height 3.5m) the water body in perforated ship dress seedling cabin, adopt pipeline mode at nursery pond water inlet simultaneously, keep larval rearing water invariant position; When fry last in nursery pond, better cluster is by siphon to perforated ship, and calculating remains fry quantity and time used.
With prior art go out seedling-growing method in contrast, its experimental procedure is as follows:
(1) means of transport is prepared: perforated ship is filled to seedling cabin and fill seawater, keep inflated condition;
(2) seed is concentrated: nursery pond draining to the depth of water is 30cm, stops inflation, utilizes torch to aim at nursery pond discharge ends and by other parts of black cloth covering nursery pond, Pseudosciaena crocea Fry is concentrated in the less corner of discharge ends of the nursery pond of illumination; Adopt pipeline mode at nursery pond water inlet simultaneously, keep larval rearing water invariant position;
(3) barreled a dead lift is emerged: then utilize the bucket of capacity 15kg that the Pseudosciaena crocea Fry of cluster is pulled out, mention in perforated ship, until calculate residue fry quantity and institute's time spent when the more difficult cluster of the last seedling amount of nursery pond.
By of the present invention go out the seedling-growing method that outes of seedling-growing method and prior art be compared as follows:
(1) of the present invention go out seedling-growing method operated by 5 people, finally remain fry and account for whole pond fish seedling sum 0.1%, 12min consuming time.The seedling-growing method that goes out of prior art is operated by 10 people, and in pond, last residue fry accounts for whole pond fish seedling sum 1%, 48min consuming time.
(2) survival rate of fish fry, abnormal rate calculate: two kinds go out seedling-growing method and arrange net cage down to fishing, every mouthful of net cage is put into the fry that quantity is suitable, calculate its dead quantity every day, lower row supports after 15 days temporarily, adding up dead sum learns: adopt of the present invention go out its survival rate approximately 74.2% of emerging of seedling-growing method, relatively prior art go out its survival rate of seedling-growing method approximately 65.7%, survival rate improves 8.5%.Wherein the present invention's dead negligible amounts of fry base on the same day of emerging, account for fry sum 0.7%, and there is more dead fry at fishing row's net cage water surface and net pin in the seedling-growing method that goes out of prior art, and death accounts for fry sum 2.5%.Fish for the suitable fry of quantity for 3 times and calculate its lopsided fry quantity at random: find that lopsided fry of the present invention reduces 0.2% than the seedling-growing method that goes out of prior art.
Therefore the present invention has reduced labour intensity, has saved human cost, has shortened seedling-growing time, effectively reduces the fry abnormal rate while emerging and has improved survival rate.
embodiment bis-
Similar with embodiment mono-, its difference is to choose the fishing row close with seedling rearing room, and direct fry siphon is transferred to fishing row net cage, transport without perforated ship, after 15 days, survival rate is approximately than contrast improve 12.3% for it, and abnormal rate reduces 0.4%, and fry shifts the cumulative time on the same day and saves 1.2 hours.
embodiment tri-
Similar with embodiment mono-, its difference is to add up survival rate and abnormal rate time for being transferred to marine net cage after 30 days.Its survival rate improves 9.4%, and abnormal rate reduces 0.5%.
embodiment tetra-
Similar with embodiment mono-, its difference is that fry seedling-growing time shortens to 40 ages in days, specification total length 2.5cm.Its survival rate improves 7.5%, and abnormal rate reduces 0.1%.
embodiment five
Similar with embodiment mono-, its difference is to contrast out seedling-growing method with being transported to harbour with the tractor of oxygenation, then moves in perforated ship.Fry shifts the time used on the same day and saves 1 hour, shifts its survival rate after 15 days and improves 10.1%, and abnormal rate reduces 0.3%.
Claims (1)
1. a method for Pseudosciaena crocea Fry fast transfer, is characterized in that following steps:
(1) means of transport is prepared: perforated ship is filled to seedling cabin and fill seawater, keep inflated condition;
(2) seed is concentrated: nursery pond draining to the depth of water is 30cm, stops inflation, utilizes torch to aim at nursery pond discharge ends and hides other parts of growing seedlings with black cloth, and Pseudosciaena crocea Fry is concentrated in the less corner of discharge ends of the nursery pond of illumination;
(3) siphon is emerged: adopt siphon pipe to utilize difference in height that seed siphon is filled to perforated ship the water body in seedling cabin from the discharge ends of nursery pond, adopt pipeline mode simultaneously at nursery pond water inlet, keep larval rearing water invariant position, until the more difficult cluster of fry;
Wherein, described Pseudosciaena crocea Fry is the fry that 40 age in days specifications are 2.5cm, seedling body stalwartness;
Wherein, described siphon pipe adopts the transparent polyethylene pipe that diameter is 60mm, inner wall smooth, and its length is greater than the distance of nursery pond to perforated ship;
Wherein, described nursery pond and perforated ship difference in height are 3.5m;
Wherein, utilize Pseudosciaena crocea Fry sociability and phototaxis feature, can start siphon in the place that has fry cluster and go ashore;
Wherein, the flowing water of its water inlet is the filtering sea of oxygen abundance;
Wherein, the time that fry shifts is that fine day, little tidewater, sea area water temperature are higher than 13 DEG C of periods;
After adopting described method to emerge, down to fishing row net cage, every mouthful of net cage is put into the fry that quantity is suitable, calculates its dead quantity every day, and lower row supports after 15 days temporarily, adds up dead sum and learns: the shoot survival percent that goes out of described method is 73.2%; Be transferred to marine net cage after 30 days, its survival rate improves 9.4%;
Enforcement a bite pond of described method only needs 5 people's operations, and the operating time only needs 12min, can be by 99.9% fry siphon to perforated ship.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210103560.0A CN102613119B (en) | 2012-04-11 | 2012-04-11 | Method for transferring larimichthys crocea fries quickly |
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| CN201210103560.0A CN102613119B (en) | 2012-04-11 | 2012-04-11 | Method for transferring larimichthys crocea fries quickly |
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| CN102613119A CN102613119A (en) | 2012-08-01 |
| CN102613119B true CN102613119B (en) | 2014-10-15 |
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| CN101965815B (en) * | 2010-11-09 | 2012-07-04 | 集美大学 | Fine breeding method for large yellow croaker |
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Inventor after: Zheng Weiqiang Inventor after: Liu Jiafu Inventor after: Huang Weiqing Inventor after: Zhang Yi Inventor after: Liu Zhaokun Inventor before: Liu Jiafu Inventor before: Han Kunhuang Inventor before: Huang Weiqing Inventor before: Zhang Yi Inventor before: Liu Zhaokun |
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Free format text: CORRECT: INVENTOR; FROM: LIU JIAFU HAN KUNHUANG HUANG WEIQING ZHANG YI LIU ZHAOKUN TO: ZHENG WEIQIANG LIU JIAFU HUANG WEIQING ZHANG YI LIU ZHAOKUN |
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| CB03 | Change of inventor or designer information |
Inventor after: Zheng Weiqiang Inventor after: Han Kunhuang Inventor after: Liu Jiafu Inventor after: Huang Weiqing Inventor after: Zhang Yi Inventor after: Liu Zhaokun Inventor before: Zheng Weiqiang Inventor before: Liu Jiafu Inventor before: Huang Weiqing Inventor before: Zhang Yi Inventor before: Liu Zhaokun |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHENG WEIQIANG LIU JIAFU HUANG WEIQING ZHANG YI LIU ZHAOKUN TO: ZHENG WEIQIANG HAN KUNHUANG LIU JIAFU HUANG WEIQING ZHANG YI LIU ZHAOKUN |