CN202760008U - Soil pond rearing device of Chinese mitten crab large-scale family juvenile crabs - Google Patents

Soil pond rearing device of Chinese mitten crab large-scale family juvenile crabs Download PDF

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Publication number
CN202760008U
CN202760008U CN 201220427152 CN201220427152U CN202760008U CN 202760008 U CN202760008 U CN 202760008U CN 201220427152 CN201220427152 CN 201220427152 CN 201220427152 U CN201220427152 U CN 201220427152U CN 202760008 U CN202760008 U CN 202760008U
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China
Prior art keywords
pond
water
crabs
juvenile
crab
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Withdrawn - After Issue
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CN 201220427152
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Chinese (zh)
Inventor
许志强
葛家春
赵沐子
丁淑燕
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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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Abstract

Disclosed is a soil pond rearing device of Chinese mitten crab large-scale family juvenile crabs. The soil pond rearing device is characterized by comprising the following steps: firstly, choosing a soil pond with good water body fluidity as a rearing pond; secondly, dividing the soil pond into a plurality of partition walls which can not influence water body flow through bolting-silk meshes; thirdly, putting spawning female crabs into cages, and then hanging the cages which are filled with the female crabs on the corresponding partition walls, controlling water temperature and salinity of sea water and maintaining the water body flow so as to place the juvenile; fourthly, moving away the cages which are filled with the female crabs when placing the juvenile is over to enter larva breeding until growing into megalopae; and finally, water body desalination and ultimate night light trapping are conducted so as to merely finish juvenile crabs breeding. The soil pond rearing device of the Chinese mitten crab large-scale family juvenile crabs has low requirements for a hatching pond. Due to the fact that larval production environments are directly connected with the earth atmosphere, microorganisms on the bottom of the pond are good in purifying capacity, the production environments are excellent, and thus both the emergence rate and the survival rate are raised substantially.

Description

The extensive family juvenile crab soil of Eriocheir sinensia pond breeding arrangement
Technical field
The utility model relates to a kind of ectogenesis device of aquatic products, the breeding arrangement of especially a kind of Eriocheir sinensia, the specifically extensive family juvenile crab soil of a kind of Eriocheir sinensia pond breeding arrangement.
Background technology
Eriocheir sinensia is a kind of aquatic products that liked by the masses.Along with the continuous expansion of consumption market, only depend on the natural propagation juvenile crab can't satisfy the cultivation needs, therefore carrying out artificial juvenile crab breeding is to solve the juvenile crab demand, reduces the key of cost, through exploration for many years, people have grasped the artificial breeding technique of juvenile crab.Existing Eriocheir sinensia family 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 respectively single native pond in single pond, because required native pond quantity is many, cost is high, and the 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 the net cage, putting the growth of children and the young all carries out in net cage, because net cage is suspended in the water body and can not touches at the end, the inner self-purification capacity of net cage is poor, and the feed of throwing something and feeding can sink to net bottom and stop up mesh, and then affect net cage water environment Water quality, affect emergence rate and survival rate, this at present except increasing the water body oxygen content, is accelerated outside the water body flow, the solution that there is no, this just causes the emergence rate of the present female crab young of each family not high, can not large-scale production family juvenile crab, and reproductive-cost is high.
Summary of the invention
The purpose of this utility model be for existing single pond and net cage juvenile crab equipment for breeding have survival rate, the rate variance of emerging, the problem that cost is high,, design a kind of extensive family juvenile crab soil of Eriocheir sinensia pond breeding arrangement that directly carries out the juvenile crab breeding at Tu Chizhong.
The technical solution of the utility model is:
The extensive family juvenile crab soil of a kind of Eriocheir sinensia pond breeding arrangement, it comprises native pond 2, it is characterized in that being equipped with in the described native pond 2 several bolting silk net sheets 1, described bolting silk net sheet 1 is divided into a plurality of partitions 3 be used to putting the children with native pond 2; The upper of each bolting silk net sheet 1 strained along 30 centimetres of the high unearthed pond waters surface and with wire or drag-line 4 at least, and the lower edge of each bolting silk net sheet 1 is connected with gabion 5, and gabion 5 pile things ons are filled with stone 6 in the gabion 5 in the fluting of 2 bottoms, native pond.
The area in described native pond 2 is 600 square metres.
Described each partition is of a size of 3 meters * 10 meters, hangs up 1 in each partition 3 and can only prevent the cylinder mould that the female crab of oogenesis escapes.
The upper edge of described each bolting silk net sheet exceeds the water surface more than 30 centimetres.
The beneficial effects of the utility model:
The present invention is by directly originating in the female young that crab is put of family oogenesis in the native pond that separates with the net sheet, the water body of each unit all is in flow regime, microorganism at the bottom of the 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 the hatchery require low, but because young production environment directly and at the bottom of the pond is joined, the microbial cleaning ability is good at the bottom of the pond, production environment is good, therefore emergence rate and survival rate all are improved largely, and breeding water body is in flow regime, and it is good to breed the condition homogeneity, environmental deviation is less between each family, and family is grown seedlings and also had comparativity between the output effect.
Description of drawings
Fig. 1 is the structural representation of partition net sheet of the present utility model.
Fig. 2 is the structural representation of Tu Chi of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
Shown in Fig. 1-2.
The extensive family juvenile crab soil of a kind of Eriocheir sinensia pond breeding arrangement, it comprises native pond 2, soil is provided with the micro-pore oxygenation head in the pond 2 and promotes water body flow or change the conventional equipments such as water pump of water, several bolting silk net sheets 1 are installed in the described native pond 2, and described bolting silk net sheet 1 is divided into a plurality of partitions 3 be used to putting the children with native pond 2; Each bolting silk net sheet 1 upper along the high pond water surface at least 30 centimetres (generally being no less than 40 centimetres during implementation) and with wire or drag-line 4 tensions of being unearthed, the lower edge of each bolting silk net sheet 1 is connected with gabion 5, gabion 5 pile things ons are filled with stone 6 in the gabion 5 in the fluting of 2 bottoms, native pond.
During implementation, the area in described native pond 2 is take about 600 square metres as best.Each Tu Chi of 600 square metres may be partitioned into 20 and cuts off 3 the size of each partition as good take 3 meters * 10 meters one, and each cuts off and hangs up 1 in 3 and can only prevent the cylinder mould that the female crab of oogenesis escapes.
Below in conjunction with the using method of the utility model in juvenile crab is cultivated the utility model is further described.
The extensive family juvenile crab soil of a kind of Eriocheir sinensia pond breeding method, it may further comprise the steps:
At first, select a good Tu Chi of water body flow to use the pond as cultivating;
Secondly, with 60-80 purpose 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, continue to use 4 tensions of wire or drag-line on each bolting silk net sheet and exceed the water surface more than 30 centimetres (wherein optimum height be 40 centimetres or more than), the lower edge of each bolting silk net sheet connects a gabion 5, the gabion pile things on is filled with stone 6 in the gabion in the fluting at the bottom of the pond; As shown in Figure 1, may be partitioned into 20 3 meters * 10 meters partition as example take 600 square metres Tu Chi.
The 3rd, put front 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 the cage, the cage that female crab will be housed again hangs in the corresponding partition, hang 1 female crab during each cuts off, control water temperature and seawater salinity also keeps water body flow to put the children, should carry out micro-pore oxygenation during conditions permit to improve incubation rate; Put about 3 days of the time of children.
The 4th, put and remove the cage that female crab is housed after the children finishes, carry out larval culture, cultivate until V phase zoea carries out the megalops larva cultivation, at last until grow up to megalops larva through I phase zoea;
At last, megalops larva being carried out water body desalination and final night lights traps and namely finishes the cultivation of juvenile crab.
Details are as follows:
Mating ratio: hero: female=1:2-3.In the early November in every year temperature be lower than 15 and gather healthy, back of the body cyan, plumpness is good, leg is hard male and female crab when spending, male and female are separately put in a suitable place to breed in the seawater pond, put close crab 300-500 jin in a suitable place to breed, cut piece with fishs such as eupleurogrammus muticus and throw something and feed reinforced cultivating more than 10 days for every mu.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 according to the family mating table, can finish through mating in three days during water temperature stability, After mating crab plastron and carapace are fitted not tight, very closely widely different with the applying before the mating, female crab copulatory opening periphery adularescent material should be spermatophore, female crab ovulation in 5-6 hour after mating is finished, female crab substantially ovulates and finishes in 1-2 days, and indivedual female crabs do not lay eggs.The female crab of oogenesis is concentrated cultivation, and every mu of density is about 500 jin of female crabs, and seawater salinity is cut piece with fresh seawater trash fishes such as eupleurogrammus muticus and thrown something and fed at 15-20 ‰, preferably micro-pore oxygenation.Cover cement pit or little Tu Chi with Polypropylence Sheet to about March 20 next year, 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 open-air pond.Temperature raising through about 20 days can obviously impel the synchronism with batch female crab egg development, is conducive to put in batches the children.To April 10, female crab extension cage is put into single juvenile crab cultivation Tu Chi partition shown in Figure 2 put the children.Put the front 15 Tianchi water of children with chlorophos, the tea tree dregs of rice, bleaching powder gradation sterilization, remove crustacean, fish and harmful microorganism.Flea 1, flea 2 are all take phytoplankton as food, and flea 3 is later on take wheel animalcule as food.Megalops larva finish to need 7 day time, megalops larva seedling age to begin desalination in the time of 3-4 days from finishing shell to desalination, and desalination needs 3 days left and right sides time in former partition, during need continuous feeding and change water.
The utility model does not relate to partly all, and the prior art that maybe can adopt same as the prior art is realized.

Claims (4)

1. the extensive family juvenile crab soil of Eriocheir sinensia pond breeding arrangement, it comprises Tu Chi (2), it is characterized in that being equipped with among the described Tu Chi (2) several bolting silk net sheets (1), described bolting silk net sheet (1) Jiang Tuchi (2) is divided into a plurality of partitions (3) be used to putting the children; The upper of each bolting silk net sheet (1) strained along 30 centimetres of high unearthed pond (2) waters surface and with wire or drag-line (4) at least, the lower edge of each bolting silk net sheet (1) is connected with gabion (5), gabion (5) pile things on is filled with stone (6) in the gabion (5) in the fluting of Tu Chi (2) bottom.
2. device according to claim 1, the area that it is characterized in that described Tu Chi (2) is 600 square metres.
3. device according to claim 1 is characterized in that described each partition is of a size of 3 meters * 10 meters, hangs up 1 in each partition (3) and can only prevent the cylinder mould that the female crab of family oogenesis escapes.
4. device according to claim 1 is characterized in that the upper edge of described each bolting silk net sheet exceeds the water surface more than 30 centimetres.
CN 201220427152 2012-08-27 2012-08-27 Soil pond rearing device of Chinese mitten crab large-scale family juvenile crabs Withdrawn - After Issue CN202760008U (en)

Priority Applications (1)

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CN 201220427152 CN202760008U (en) 2012-08-27 2012-08-27 Soil pond rearing device of Chinese mitten crab large-scale family juvenile crabs

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Application Number Priority Date Filing Date Title
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CN202760008U true CN202760008U (en) 2013-03-06

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102812912A (en) * 2012-08-28 2012-12-12 江苏省淡水水产研究所 Large-scale family juvenile crab soil pool culture method for eriocheir sinensis
CN103283666A (en) * 2013-05-17 2013-09-11 芜湖旺龙渔业有限责任公司 High-density crab culture pond
CN103416334A (en) * 2013-08-05 2013-12-04 江苏省淡水水产研究所 Method for improving uniformity of sizes of juvenile crabs

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102812912A (en) * 2012-08-28 2012-12-12 江苏省淡水水产研究所 Large-scale family juvenile crab soil pool culture method for eriocheir sinensis
CN102812912B (en) * 2012-08-28 2014-05-07 江苏省淡水水产研究所 Large-scale family juvenile crab soil pool culture method for eriocheir sinensis
CN103283666A (en) * 2013-05-17 2013-09-11 芜湖旺龙渔业有限责任公司 High-density crab culture pond
CN103416334A (en) * 2013-08-05 2013-12-04 江苏省淡水水产研究所 Method for improving uniformity of sizes of juvenile crabs

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Granted publication date: 20130306

Effective date of abandoning: 20140507