CN103651200A - Juvenile crab cultivating method for high-sea swimming crabs - Google Patents

Juvenile crab cultivating method for high-sea swimming crabs Download PDF

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Publication number
CN103651200A
CN103651200A CN201310646623.1A CN201310646623A CN103651200A CN 103651200 A CN103651200 A CN 103651200A CN 201310646623 A CN201310646623 A CN 201310646623A CN 103651200 A CN103651200 A CN 103651200A
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Prior art keywords
pond
crab
holding
cultivating
ovigerous
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CN103651200B (en
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谭雄亮
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BEIHAI ZHENFA MARINE INDUSTRY SCIENCE & TECHNOLOGY Co Ltd
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BEIHAI ZHENFA MARINE INDUSTRY SCIENCE & TECHNOLOGY Co Ltd
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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 juvenile crab cultivating method for high-sea swimming crabs. The juvenile crab cultivating method comprises the steps of selecting parent crabs, preparing a storage pond, managing non-egg-carrying crabs, managing egg-carrying crabs and cultivating juvenile crabs. According to the juvenile crab cultivating method for the high-sea swimming crabs, the manual juvenile crab cultivating technology study for the high-sea swimming crabs is carried out for increasing an excellent new cultivation product in Guangxi, and the method plays an important role in promoting the breed structure adjustment of sea farming industries and developing the ocean economy.

Description

A kind of seedling-cultivating method of Portunus pelagicus
Technical field
The present invention relates to the seedling-cultivating method of the cultivation technical field, particularly a kind of Portunus pelagicus of swimming crab.
Background technology
Swimming crab is the seafood product that people like food, and meat flavour is delicious, nutritious and favored by consumer.There are four large economic crab, i.e. mud crab, Eriocheir sinensia, Portunus trituberculatus Miers, Portunus pelagicus in China.Portunus trituberculatus Miers fecund China Huanghai Sea, the Bohai Sea, the East Sea, and Portunus pelagicus fecund is in China South Sea, the East Sea.
Portunus pelagicus (Sea crab), though in west of Guangdong Province Yuexi, that output is caught in the sea in Guangxi and Hainan is quite large, its resource reduces day by day.Portunus pelagicus build is large, adaptable, fast growth, disease are few, economic worth high, being a kind of mariculture kind that has much development prospect, is also one of improved seeds of shrimp pond integrated culture, good in economic efficiency (per kilogram 20-60 unit).Culture be take seawall, the sandy end as good, can utilize in a large number the low-quality shrimp pool to carry out culture, wherein west of Guangdong Province Yuexi, the North Sea and Hainan Region carry out artificial breeding and form condition the most suitable, best results, but at present, propagate Portunus pelagicus artificially few, about Portunus pelagicus grow seedlings and the technical research data that cultivates quite few.
Summary of the invention
The present invention is directed to above-mentioned deficiency, disclose a kind of seedling-cultivating method of Portunus pelagicus:
1) close crab is selected: select close crab body weight at 80~150g, more than the long 7cm of first, appendage is complete;
2) preparation of storage pond, holding pond
After 2.1 cleanings, use 20ppmKMnO 4sterilization;
In 2.2 storage pond, holding ponds, the fine sand 3~5cm of paving after cleaning, sterilizing, accounts for 50~60% of pond floor space;
2.3 use tiles, fragment of brick nest, for close crab hidden, perch;
2.4 storage pond, holding pond face black cloth shadings, daylight is controlled at 50~100Lux, 1/m of venting stone in pond 2;
3) the not management of ovigerous crab
3.1 put into storage pond, holding pond by the close crab of oogenesis not;
3.2 storage pond, holding pond water temperatures are controlled at 25~30 ℃, change water temperature difference and are no more than 1~2 ℃, proportion 1.018~1.025, the depth of water 45~55cm;
Change water 100% 3.3 mornings every day, observe and have or not ovigerous crab;
3.4 bait throwing in every day 1 time, dusk or evening throw, and daily ration, feeding quantity is 5~10% of close crab body weight, according to the situation adjustment of ingesting, shows a small surplus as good;
4) management of ovigerous crab
4.1 find, after ovigerous crab, it,, with ovigerous crab is not separated, to be put into other storage pond, holding pond;
The storage pond, holding pond salinity of 4.2 pairs of ovigerous crabs is controlled at 26~30%, and daily amplitude is less than 2 ‰; 25~30 ℃ of temperature, temperature difference per day is less than 1 ℃, full pool spilling head EDTA5ppm, 2~3 days antimicrobials of splashing, keep inflation;
4.3 monitoring fertilized egg and embryonic development situations, have or not that fungi or Zoothamnium infect, the hatching date of prediction ovigerous crab, when ovum colored appearance becomes grey black, in conjunction with microscopy, embryo heartbeat reaches 150 times/min when above, ovigerous crab is moved into hatchery and hatch;
5) larval culture
5.1 nursery ponds are processed: with watery hydrochloric acid, scrub, the bleaching powder of 10ppm soaks half an hour, and rinses well, then with rinsing well with filtering sea after the sterilization of 20ppm potassium permanganate, gas stone is 1.5-2/m 2;
5.2 nursery pond management: nursery pond adds water 80~100cm, and full pool spilling head EDTA5ppm inoculates a small amount of Micro Algae (flat algae, chlorella) in pond, concentration 10~12 * 104cell/ml liter, water body shows light algae water colour, and the young enters the first 1 day inoculating rotifer in pond, 5/ml of density, 25~30 ℃ of water temperatures, proportion 1.015~1.022, pH value 7.8~8.6, ammonia nitrogen is less than 0.02mg/l, more than dissolved oxygen 5mg/l, illumination 1000~10000Lux;
5.3 young are thrown in density: 5 * 104/m 3, bait throwing in every day 2~4 times;
5.4 when paedomorphosis is when the young crab, goes out pond.
Preferred version is: the close crab density in described storage pond, holding pond is 1~2/m 2.
Preferred version is: described storage pond, holding pond, every 4~5 days, thoroughly turns over and washes, sterilizes fine sand once, prevents sand bed blackening, or falls pond once.
Preferred version is: described storage pond, holding pond every 3~5 days available formalin, potassium permanganate or nystatin to close crab dipping.
Preferred version is: described bait is respectively Micro Algae, wheel animalcule and artemia nauplii different periods according to the young.
The present invention has set up a kind of seedling-cultivating method of Portunus pelagicus, carry out the research of Portunus pelagicus artificial breeding technique, for Guangxi increases good cultivation new varieties to promoting breed structure readjustment and the marine economy development of mariculture industry to have great importance.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail:
1) close crab is selected: select close crab body weight at 80~150g, more than the long 7cm of first, appendage is complete;
2) preparation of storage pond, holding pond
After 2.1 cleanings, use 20ppmKMnO 4sterilization, described storage pond, holding pond, every 4~5 days, thoroughly turns over and washes, sterilizes fine sand once, prevents sand bed blackening, or falls pond once, every 3~5 days available formalin, potassium permanganate or nystatin to close crab dipping;
In 2.2 storage pond, holding ponds, the fine sand 3~5cm of paving after cleaning, sterilizing, accounts for 50~60% of pond floor space, and discharge outlet is neighbouring without sanding, as feeding area, feeding ground;
2.3 use tiles, fragment of brick nest, for close crab hidden, perch;
2.4 storage pond, holding pond face black cloth shadings, daylight is controlled at 50~100Lux, 1/m of venting stone in pond 2;
3) the not management of ovigerous crab
3.1 put into storage pond, holding pond by the close crab of oogenesis not;
3.2 storage pond, holding pond water temperatures are controlled at 25~30 ℃, best 28 ℃, change water temperature difference and are no more than 1~2 ℃, proportion 1.018~1.025, the depth of water 45~55cm;
Change water 100% 3.3 mornings every day, 8:00 cleaning every day bait field, removes residual bait, dirt is observed and had or not ovigerous crab;
3.4 bait throwing in every day 1 time, dusk or evening throw, and daily ration, feeding quantity is 5~10% of close crab body weight, according to the situation adjustment of ingesting, shows a small surplus as good, and the density of close crab is: 1~2/m 2;
4) management of ovigerous crab
4.1 find, after ovigerous crab, it,, with ovigerous crab is not separated, to be put into other storage pond, holding pond.Described storage pond, holding pond, every 4~5 days, thoroughly turns over and washes, sterilizes fine sand once, prevents sand bed blackening, or falls pond once, every 3~5 days available formalin, potassium permanganate or nystatin to close crab dipping;
The storage pond, holding pond salinity of 4.2 pairs of ovigerous crabs is controlled at 26~30%, and daily amplitude is less than 2 ‰, 25~30 ℃ of temperature, and temperature difference per day is less than 1 ℃, full pool spilling head EDTA5ppm, 2~3 days antimicrobials of splashing, keep inflation;
4.3 monitoring fertilized egg and embryonic development situations, have or not that fungi or Zoothamnium infect, the hatching date of prediction ovigerous crab, when ovum colored appearance becomes grey black, in conjunction with microscopy, embryo heartbeat reaches 150 times/min when above, ovigerous crab is moved into hatchery and hatch;
5) larval culture
5.1 nursery ponds are processed: with watery hydrochloric acid, scrub, the bleaching powder of 10ppm soaks half an hour, and rinses well, then with rinsing well with filtering sea after the sterilization of 20ppm potassium permanganate, gas stone is 1.5-2/m 2;
5.2 nursery pond management: nursery pond adds water 80~100cm, and full pool spilling head EDTA5ppm inoculates a small amount of Micro Algae (flat algae, chlorella) in pond, concentration 10~12 * 104cell/ml liter, water body shows light algae water colour, and the young enters the first 1 day inoculating rotifer in pond, 5/ml of density, 25~30 ℃ of water temperatures, proportion 1.015~1.022, pH value 7.8~8.6, ammonia nitrogen is less than 0.02mg/l, more than dissolved oxygen 5mg/l, illumination 1000~10000Lux;
5.3 young are thrown in density: 5 * 104/m 3, bait throwing in every day 2~4 times, bait is respectively Micro Algae, wheel animalcule and artemia nauplii different periods according to the young;
5.4 when paedomorphosis is when the young crab, goes out pond;
6) food organisms are cultivated
6.1 Micro Algaes are cultivated
Culture fluid formula: sodium nitrate 60ppm, potassium dihydrogen phosphate 5ppm, ironic citrate 1ppm.The algae kind that algae kind level is cultivated access is 1:2-5 with the ratio of new culture fluid, and inoculation time is typically chosen between 8:00-10:00 in the morning and carries out, and Micro Algae passes through the cultivation of 10d at normal temperatures, and concentration reaches 4 * 10 5individual/more than ml, now to can be used as bait feeding.
6.2 wheel animalcules are cultivated
The bait of wheel animalcule be take Micro Algae and yeast as main.When illumination condition is better, can in culture pond, first add nutritive salt, to cultivate Micro Algae, after slightly having color, the water in container inoculates wheel animalcule.The inoculum density of wheel animalcule is generally advisable with 100-200/ml.When Micro Algae can not meet the nutritional need of wheel animalcule, must take and throw something and feed yeast as main, before throwing something and feeding, with 250 order silk cover filterings, a day feeding volume is 0.8~1.2g/ (d10 6wheel animalcule), throw something and feed for twice.Under the conditions such as suitable temperature, bait, dissolved oxygen, illumination, through 8~10d, cultivate, when the density of wheel animalcule reaches 200/ml, can expand when above and cultivate or gather in the crops.Before results, with Micro Algae strengthening, use two days later.The special mesh bag that available 200 mesh sieve thin,tough silk are made filters results.When wheel animalcule can not meet need of production, from Zhanjiang and Fujian, buy.
When wheel animalcule density is lower, when daily ration, feeding quantity is less, general inflation, as wheel animalcule density higher (500/ml), when daily ration, feeding quantity is larger, must powerfully inflate, to guarantee dissolved oxygen certain in water body.Daily ration, feeding quantity is 0.8~1.2g/ (d10 6wheel animalcule) be comparatively desirable.Total principle is: when early stage wheel animalcule density is low, bait is throw suitably more, and wheel animalcule density is when higher, and bait can suitably be thrown less.When early stage wheel animalcule density is low, can throw every day 1~2 time; And later stage wheel animalcule density is high, can throw every day 2~5 times.
Wheel animalcule culture pond, through the cultivation of 7d, just must fall pond, to remove the factor that wheel animalcule is cultivated that is unfavorable for that residual bait corruption causes.All the more so when High Density Cultivation.In order to guarantee that High Density Cultivation wheel animalcule can normally carry out, preferably guarantee 1 pond of 2~3d.In wheel animalcule filtration and transfer process, a part of wheel animalcule may be lost like this, but the object of short time High Density Cultivation can be guaranteed to reach.

Claims (5)

1. a seedling-cultivating method for Portunus pelagicus, is characterized in that, step comprises:
1) close crab is selected: select close crab body weight at 80~150g, more than the long 7cm of first, appendage is complete;
2) preparation of storage pond, holding pond
After 2.1 cleanings, use 20ppmKMnO 4sterilization;
In 2.2 storage pond, holding ponds, the fine sand 3~5cm of paving after cleaning, sterilizing, accounts for 50~60% of pond floor space;
2.3 use tiles, fragment of brick nest, for close crab hidden, perch;
2.4 storage pond, holding pond face black cloth shadings, daylight is controlled at 50~100Lux, 1/m of venting stone in pond 2;
3) the not management of ovigerous crab
3.1 put into storage pond, holding pond by the close crab of oogenesis not;
3.2 storage pond, holding pond water temperatures are controlled at 25~30 ℃, change water temperature difference and are no more than 1~2 ℃, proportion 1.018~1.025, the depth of water 45~55cm;
Change water 100% 3.3 mornings every day, observe and have or not ovigerous crab;
3.4 bait throwing in every day 1 time, dusk or evening throw, and daily ration, feeding quantity is 5~10% of close crab body weight, according to the situation adjustment of ingesting, shows a small surplus as good;
4) management of ovigerous crab
4.1 find, after ovigerous crab, it,, with ovigerous crab is not separated, to be put into other storage pond, holding pond;
The storage pond, holding pond salinity of 4.2 pairs of ovigerous crabs is controlled at 26~30%, and daily amplitude is less than 2 ‰; 25~30 ℃ of temperature, temperature difference per day is less than 1 ℃, full pool spilling head EDTA5ppm, 2~3 days antimicrobials of splashing, keep inflation;
4.3 monitoring fertilized egg and embryonic development situations, have or not that fungi or Zoothamnium infect, the hatching date of prediction ovigerous crab, when ovum colored appearance becomes grey black, in conjunction with microscopy, embryo heartbeat reaches 150 times/min when above, ovigerous crab is moved into hatchery and hatch;
5) larval culture
5.1 nursery ponds are processed: with watery hydrochloric acid, scrub, the bleaching powder of 10ppm soaks half an hour, and rinses well, then with rinsing well with filtering sea after the sterilization of 20ppm potassium permanganate, gas stone is 1.5-2/m 2;
5.2 nursery pond management: nursery pond adds water 80~100cm, and full pool spilling head EDTA5ppm inoculates a small amount of Micro Algae (flat algae, chlorella) in pond, concentration 10~12 * 104cell/ml liter, water body shows light algae water colour, and the young enters the first 1 day inoculating rotifer in pond, 5/ml of density, 25~30 ℃ of water temperatures, proportion 1.015~1.022, pH value 7.8~8.6, ammonia nitrogen is less than 0.02mg/l, more than dissolved oxygen 5mg/l, illumination 1000~10000Lux;
5.3 young are thrown in density: 5 * 104/m 3, bait throwing in every day 2~4 times;
5.4 when paedomorphosis is when the young crab, goes out pond.
2. the seedling-cultivating method of Portunus pelagicus according to claim 1, is characterized in that, the close crab density in described storage pond, holding pond is 1~2/m 2.
3. the seedling-cultivating method of Portunus pelagicus according to claim 1, is characterized in that, described storage pond, holding pond, every 4~5 days, thoroughly turns over and washes, sterilizes fine sand once, prevents sand bed blackening, or falls pond once.
4. the seedling-cultivating method of Portunus pelagicus according to claim 1, is characterized in that, described storage pond, holding pond every 3~5 days available formalin, potassium permanganate or nystatin to close crab dipping.
5. the seedling-cultivating method of Portunus pelagicus according to claim 1, is characterized in that, described bait is respectively Micro Algae, wheel animalcule and artemia nauplii different periods according to the young.
CN201310646623.1A 2013-12-04 2013-12-04 A kind of method for culturing seedlings of Portunus pelagicus Expired - Fee Related CN103651200B (en)

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CN105145424A (en) * 2015-08-04 2015-12-16 厦门大学 Culturing method for blue crab egg-carrying crab phase
CN106035164A (en) * 2016-06-16 2016-10-26 中国水产科学研究院下营增殖实验站 Method for improving breeding survival rate of Portunus trituberculatus larvae in northern areas
CN109997754A (en) * 2019-05-15 2019-07-12 湖南助农农业科技发展有限公司 A kind of cultural method of lobster volume increase

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105028261A (en) * 2015-06-18 2015-11-11 中国水产科学研究院东海水产研究所 Method for effectively preventing and controlling fungal disease of scylla paramamosain larvae
CN105028261B (en) * 2015-06-18 2017-09-29 中国水产科学研究院东海水产研究所 One kind preventing and treating mycotic method of Scylla paramamosain seed
CN105145424A (en) * 2015-08-04 2015-12-16 厦门大学 Culturing method for blue crab egg-carrying crab phase
CN106035164A (en) * 2016-06-16 2016-10-26 中国水产科学研究院下营增殖实验站 Method for improving breeding survival rate of Portunus trituberculatus larvae in northern areas
CN106035164B (en) * 2016-06-16 2018-11-09 中国水产科学研究院下营增殖实验站 A kind of method that northern area improves Portunus trituberculatus Miers seed rearing survival rate
CN109997754A (en) * 2019-05-15 2019-07-12 湖南助农农业科技发展有限公司 A kind of cultural method of lobster volume increase

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