CN102812912B - Large-scale family juvenile crab soil pool culture method for eriocheir sinensis - Google Patents

Large-scale family juvenile crab soil pool culture method for eriocheir sinensis Download PDF

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Publication number
CN102812912B
CN102812912B CN201210308462.0A CN201210308462A CN102812912B CN 102812912 B CN102812912 B CN 102812912B CN 201210308462 A CN201210308462 A CN 201210308462A CN 102812912 B CN102812912 B CN 102812912B
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China
Prior art keywords
crab
water
cage
family
pool
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Expired - Fee Related
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CN201210308462.0A
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CN102812912A (en
Inventor
葛家春
赵沐子
许志强
丁淑燕
李跃华
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Freshwater Fisheries Research Institute of Jiangsu Province
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Freshwater Fisheries Research Institute of Jiangsu Province
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81Aquaculture, e.g. of fish

Abstract

The invention relates to a large-scale family juvenile crab soil pool culture method for eriocheir sinensis. The method is characterized by comprising the following steps that firstly, a soil pool with good water body flowability is selected to be used as a culture pool; secondly, bolting silk net piece is used for cutting the soil pool into a plurality of partition spaces which do not influence the water body flowability; thirdly, each family oogenesis female crab is singly placed into a cage, then, a cage containing the female crab is hung in the corresponding partition spaces, the water temperature and the seawater salinity are controlled, the water body flowability is maintained for young crab releasing; fourthly, the cage containing the female crab is moved away after the young crab releasing, the family larva culture is carried out until the larva grows into megalopa; and finally, the water desalting and the final night lamp light trapping are carried out in the original partition space, and the juvenile crab culture is completed. The method provided by the invention has the advantages that the requirement on a hatching pool is low, but the larva production environment is directly connected with the pool bottom, the pool bottom microbe purification capability is good, and the production environment is excellent, so few pools can be used for producing more family juvenile crabs, and in addition, the emergence rate and the survival rate of each family are greatly improved.

Description

The extensive family juvenile crab soil of Eriocheir sinensia pond breeding method
Technical field
The present invention relates to a kind of culturing and reproducing of aquatic products, the breeding method of especially a kind of Eriocheir sinensia juvenile crab, the specifically extensive family juvenile crab soil of a kind of Eriocheir sinensia pond breeding method.
Background technology
Eriocheir sinensia is a kind of aquatic products that liked by the masses.Along with the development of Eriocheir sinensis industry, breeding enterprise and raiser are in great demand to the good juvenile crab of seed selection.Family selective breeding is one of main method of Eriocheir sinensia excellent strain seed selection at present.Existing Eriocheir sinensia family selective breeding seedling raising manners is broadly divided into single pond and grows seedlings and two kinds of net cage seedling nurseries, wherein grow seedlings and refer to the female crab of the oogenesis of post-coitum is placed in respectively to single native pond in single pond, because required native pond quantity is many, cost is high, and breeding environment homogeneity is poor, what therefore people generally adopted is net cage (pentahedron, end face is unenclosed construction) grow seedlings, net cage seedling nursery is that the female crab of oogenesis is loaded in net cage, put children and young growth all carries out in net cage, because being suspended in water body, can not touch at the end by net cage, the inner self-purification capacity of net cage is poor, the feed of throwing something and feeding stops up mesh at the bottom of can sinking to net cage, and then affect net cage water environment Water quality, affect emergence rate and survival rate, to this at present except increasing water body oxygen content, accelerate outside water body flow, the solution there is no, this just causes the emergence rate of the female crab young of current each family not high, can not large-scale production family juvenile crab, production cost is high.
Summary of the invention
The object of the invention is for existing single pond and net cage family juvenile crab production method there is survival rate, the rate variance of emerging, the problem that cost is high, invents a kind of extensive family juvenile crab soil of Eriocheir sinensia pond breeding method that directly carries out juvenile crab production at Tu Chizhong.
Technical scheme of the present invention is:
The extensive family juvenile crab soil of an Eriocheir sinensia pond breeding method, is characterized in that it comprises the following steps:
First, select a good Tu Chi of water body flow to use pond as cultivating;
Secondly, with 60-80 object bolting silk net sheet, above-mentioned Tu Chi is divided into the partition that several do not affect water body flow, on each bolting silk net sheet, continue to use wire or cable pull and exceed the water surface more than 30 centimetres, the lower edge of each bolting silk net sheet connects a gabion, gabion pile things on, in the fluting at the bottom of pond, is filled with stone in gabion;
The 3rd, the female crab of oogenesis is put in cage, then the cage that female crab is housed is hung in corresponding partition, control water temperature and seawater salinity and keep water body flow to put children;
The 4th, put after children finishes and remove the cage that female crab is housed, carry out larval culture, until grow up to megalops larva;
Finally, in former partition, carry out water body desalination and final night lights is traped the cultivation that completes juvenile crab.
The area of described Tu Chi is 500-1500.
Each described partition is of a size of 3 meters * 10 meters, and each hangs up the female crab of 1 oogenesis in cutting off.
The upper edge of each described bolting silk net sheet exceeds the water surface more than 30 centimetres.
Put first 15 days of children with chlorophos, the tea tree dregs of rice, bleaching powder gradation sterilization female crab being put into cut off, to remove crustacean, fish and harmful microorganism.
Beneficial effect of the present invention:
The present invention is by directly originating in the female young that crab is put of family oogenesis in the native pond separating with net sheet, the water body of each unit is all in flow regime, microorganism at the bottom of pond has good self-purification capacity, be conducive to improve the survival rate of the young, can make per mu yield juvenile crab family more than 20, each family juvenile crab output reaches more than 1 kilogram.
The present invention to hatchery require low, but because young production environment directly and at the bottom of pond is joined, at the bottom of pond, microbial cleaning ability is good, production environment is good, therefore emergence rate and survival rate are all improved largely, and breeding water body is in flow regime, breed condition homogeneity good, between each family, environmental deviation is less, and family is grown seedlings and between output effect, also had comparativity.
Accompanying drawing explanation
Fig. 1 is the structural representation of partition net sheet of the present invention.
Fig. 2 is the structural representation of Tu Chi of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
As shown in Figure 1-2.
The extensive family juvenile crab soil of an Eriocheir sinensia pond breeding method, it comprises the following steps:
First, select a good Tu Chi of water body flow to use pond as cultivating;
Secondly, with 60-80 object bolting silk net sheet 1, above-mentioned native pond 2 is divided into several partitions that does not affect water body flow 3, as shown in Figure 2, on each bolting silk net sheet 1, continue to use wire or drag-line 4 strain and exceed 30 centimetres of the waters surface above (wherein optimum height be 40 centimetres or more than), the lower edge of each bolting silk net sheet 1 connects a gabion 5, gabion 5 pile things ons, in the fluting at the bottom of pond, are filled with stone 6 in gabion; As shown in Figure 1, the Tu Chi of 600 square metres of take may be partitioned into the partition of 20 3 meters * 10 meters as example, and coverage of water be take 500-1500 square metre as good.
The 3rd, put first about 15 days of children with chlorophos, the tea tree dregs of rice, bleaching powder gradation sterilization female crab being put into cut off, remove crustacean, fish and harmful microorganism, again the female crab of oogenesis is put in cage, again the cage that female crab is housed is hung in corresponding partition, each hangs 1 female crab in cutting off, and controls water temperature and seawater salinity and keeps water body flow to put children, should carry out micro-pore oxygenation to improve incubation rate during conditions permit; Put the approximately 3 days time of children.
The 4th, put after children finishes and remove the cage that female crab is housed, carry out larval culture, through I phase zoea, cultivate until V phase zoea finally carries out megalops larva cultivation, until grow up to megalops larva;
Finally, in former partition, megalops larva is carried out to water body desalination and final night lights is traped the cultivation that completes juvenile crab.
Details are as follows:
Mating ratio: hero: female=1:2-3.The male and female crab that gathered health when annual early November, temperature was spent lower than 15, carry on the back cyan, plumpness is good, leg is hard, male and female are separately put in a suitable place to breed in seawater pond, put close crab 300-500 jin in a suitable place to breed for every mu, cut piece throw something and feed reinforced cultivating more than 10 days with fresh seawater trash fish.According to family mating table, when seawater water temperature 9-11 spends at the beginning of mid-November to 12 month, the male and female crab of each family mark is put into independent crab pot mating, during water temperature stability, through mating in three days, can complete, After mating crab plastron and carapace laminating are not tight, very closely widely different with the laminating before mating, female crab copulatory opening periphery adularescent material, should be spermatophore, female crab ovulation in 5-6 hour after mating completes, in 1-2 days, female crab has ovulated substantially, and indivedual female crabs do not lay eggs.The female crab of oogenesis is concentrated and cultivated, and every mu of density is 500 jin of female crab left and right, and seawater salinity, at 15-20 ‰, is cut piece with fresh seawater trash fish (as eupleurogrammus muticus) and thrown something and fed, preferably micro-pore oxygenation.To about March 20 next year, with Polypropylence Sheet, cover cement pit or little Tu Chi, the female crab of oogenesis is put into temperature raising, breeding density is approximately 20/square meter, makes water temperature than the high 2-3 degree in outdoor pond.Temperature raising through about 20 days, can obviously impel the synchronism with batch female crab egg development, is conducive to put in batches children.To April 10, female crab extension cage is put into the single juvenile crab cultivation Tu Chi partition shown in Fig. 2 and put children.Put chlorophos, the tea tree dregs of rice, the bleaching powder gradation sterilization for water of front 15 Tianchis of children, remove crustacean, fish and harmful microorganism.Flea 1, flea 2 all be take phytoplankton as food, and flea 3 be take wheel animalcule as food later.Megalops larva finishes to need 7 day time from completing shell to desalination, and megalops larva seedling age starts desalination in the time of 2-3 days, and in former partition, desalination needs 4 days left and right time, during need continuous feeding and change water.
The part that the present invention does not relate to all prior art that maybe can adopt same as the prior art is realized.

Claims (5)

1. the extensive family juvenile crab of an Eriocheir sinensia soil pond breeding method, is characterized in that it comprises the following steps:
First, select a good Tu Chi of water body flow to use pond as cultivating;
Secondly, with 60-80 object bolting silk net sheet, above-mentioned Tu Chi is divided into the partition that several do not affect water body flow, on each bolting silk net sheet, continue to use wire or cable pull and exceed the water surface more than 30 centimetres, the lower edge of each bolting silk net sheet connects a gabion, gabion pile things on, in the fluting at the bottom of pond, is filled with stone in gabion;
The 3rd, the female crab of oogenesis is put in cage, then the cage that female crab is housed is hung in corresponding partition, control water temperature and seawater salinity and keep water body flow to put children;
The 4th, put after children finishes and remove the cage that female crab is housed, carry out larval culture, until grow up to megalops larva;
Finally, carry out water body desalination and final night lights is traped the cultivation that completes juvenile crab.
2. method according to claim 1, is characterized in that the area of described Tu Chi is 500-1500 square metre.
3. method according to claim 1, is characterized in that each described partition is of a size of 3 meters * 10 meters, and each hangs up the female crab of 1 oogenesis in cutting off.
4. method according to claim 1, is characterized in that the upper edge of each described bolting silk net sheet exceeds the water surface more than 30 centimetres.
5. method according to claim 1, is characterized in that putting first 15 days of children with chlorophos, the tea tree dregs of rice, bleaching powder gradation sterilization female crab being put into cut off, and removes crustacean, fish and harmful microorganism.
CN201210308462.0A 2012-08-28 2012-08-28 Large-scale family juvenile crab soil pool culture method for eriocheir sinensis Expired - Fee Related CN102812912B (en)

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Publication number Priority date Publication date Assignee Title
CN103416334B (en) * 2013-08-05 2015-05-13 江苏省淡水水产研究所 Method for improving uniformity of sizes of juvenile crabs
CN106172095B (en) * 2016-07-04 2021-07-27 淮安市苏泽生态农业有限公司 Breeding method of large-size Yangtze river system river crab fine breeds
CN109601450A (en) * 2019-01-29 2019-04-12 钦州学院 The method for improving Eriocheir hepuensis breeding survival rate and grazing rate by control salinity

Citations (3)

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Publication number Priority date Publication date Assignee Title
CN1296742A (en) * 2000-12-28 2001-05-30 中国科学院南京地理与湖泊研究所 Technique for breeding stage-5 young crab in hot house
CN102106283A (en) * 2011-01-26 2011-06-29 中国水产科学研究院东海水产研究所 Layered cage rearing device and using method thereof
CN202760008U (en) * 2012-08-27 2013-03-06 江苏省淡水水产研究所 Soil pond rearing device of Chinese mitten crab large-scale family juvenile crabs

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1296742A (en) * 2000-12-28 2001-05-30 中国科学院南京地理与湖泊研究所 Technique for breeding stage-5 young crab in hot house
CN102106283A (en) * 2011-01-26 2011-06-29 中国水产科学研究院东海水产研究所 Layered cage rearing device and using method thereof
CN202760008U (en) * 2012-08-27 2013-03-06 江苏省淡水水产研究所 Soil pond rearing device of Chinese mitten crab large-scale family juvenile crabs

Non-Patent Citations (2)

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Title
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