CN105028271A - Cultivating technology of Eriocheir sinensis megalopas in inland freshwater lake - Google Patents
Cultivating technology of Eriocheir sinensis megalopas in inland freshwater lake Download PDFInfo
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- CN105028271A CN105028271A CN201510370176.0A CN201510370176A CN105028271A CN 105028271 A CN105028271 A CN 105028271A CN 201510370176 A CN201510370176 A CN 201510370176A CN 105028271 A CN105028271 A CN 105028271A
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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
Abstract
The invention discloses a cultivating technology of Eriocheir sinensis megalopas in an inland freshwater lake and belongs to the field of aquaculture. The invention provides the cultivating technology of the megalopas of Eriocheir sinensis by controlling key steps such as culture pond preparation, sterilization and water quality regulation and daily management; by implementing the cultivating technology, the cultivated megalopas are low in cultivation cost, young Eriocheir sinensises are high in survival, consistent in transformation time, and neat in height and can be cultivated on a large scale.
Description
one, technical field:
Eriocheir sinensis megalopa of the present invention belongs to technical field of aquaculture at inland-lake Cultivating techniques, particularly relates to Eriocheir sinensis megalopa at inland-lake Cultivating techniques.
two, background technology:
Inland-lake is both away from seashore, and deeply occupy in the fresh water lake of arid area, inland again, wherein the fresh water lake of Largest In China is the Bosten in Xinjiang, and it is dry, day and night temperature is large, the gap in water temperature, water quality and Water area of Changjiang River fresh water lake is larger;
Megalops larva megalopa is crab class metazoea (Metazea), is equivalent to the mysis larva of shrimps.At transition period of dwelling the end of to from swimming, being manyly found on the algae of drift, being born in long optic stalk end because it has a pair larger compound eye, being revealed in outside eye socket and gaining the name.Megalops larva form is the transition stage between Magna zoea larva and young crab, and megalops larva has possessed the ability of osmotic pressure in stronger control agent compared with Magna zoea larva, is adapted to fresh water life, therefore shows the fresh water that significantly becomes.Megalops larva can breathe with the cheek, can survive 2 ~ 3 days after dried up when keeping moistening, and this feature is that the transport of juvenile crab long-distance dry method provides conveniently, and megalops larva, through peeling for more than five times, growing, grows up to crab shape, becomes
phase children crab;
Due to inland-lake Shen Ju inland, distance is far away, dry, day and night temperature large, water temperature, water quality are comparatively large with the gap in other fresh water lakes, and Eriocheir sinensia is main mainly with directly throwing in that young crab cultivates, and while young crab cost is high, line-haul cost is also higher; In net cage, young crab is cultivated into megalops larva, putting in a suitable place to breed at Bositeng Lake water area is example, though solve seed and the high problem of cost of transportation, but due to being not suitable with water quality, temperature, environment and food, and through long-distance transport, it is low that megalops larva becomes young crab survival rate, some is difficult to de-become young crab, de-change Time Inconsistency, young crab head is uneven, has had a strong impact on the quantity and quality of commodity crab.
three, summary of the invention:
The megalops larva of a kind of Eriocheir sinensia the object of the present invention is to provide cultivation cost low, young crab survival rate high, the de-change time is comparatively consistent, head is more neat, can cultivated on a large scale is at inland-lake Cultivating techniques.
The object of the present invention is achieved like this: Eriocheir sinensis megalopa is cultivated at inland-lake and mainly comprised the following steps:
A, to cultivate pond and prepare: cultivation tank depth is 1-1.5m, the gradient is-, bottom pond, be provided with drainpipe; After cultivating pond sterilizing, inject water, depth of water 50-100cm, pond water salinity is 4-5 ‰, water temperature 23-25 DEG C, pH value 7.5-8.5, oxygen content is greater than 4mg/L, within pond 15-20 days in advance, throws in the pasture and water after sterilizing, pasture and water area coverage 75-85%, pasture and water height 20-25cm, water transparence 40-50cm;
B, megalops larva cultivate daily management:
Before the megalops larva that transport comes enters pond, first the overall net cage that will transport immerses 5-10 minute in cultivation pond, then megalops larva is thrown in cultivation pond, it is 20-50g/m3 that megalops larva cultivates density, enter front 2-3 days behind pond and do not change water, and a food of every two hours throwing something and feeding, throw in the 200-250% that food total amount is megalops larva gross weight every day.
Within 3rd or the 4th day, begin, limit desalination limit feeding: the water in local inland-lake is injected from top, pond, the draining of bottom, pond, every day, quantity of exchanged water was not less than Chi Shui, and every day desalinates 3-4 hours sooner or later altogether, and pond water temperature remains on 21-25 DEG C; Throw in the 150-200% that quantity of food is current juvenile crab gross weight, throw in three every day; Cultivate to after 10-12 days, cultivate in pond consistent with the salinity water of local inland-lake, temperature; The feeding amount of every day is the 80-100% of current juvenile crab gross weight, only feeding sooner or later, and early feeding accounts for the 30-35% of feeding every day amount; When educating to 2.5-3g to young crab increasing, young crab is put into local inland-lake and cultivates.
Described megalops larva is 5-7 age in days;
The described cultivation pond gradient is preferably; Described pasture and water are preferably hornwort and fragrant plant mentioned in ancient texts;
In described water quality adjustment step, pond salinity water is by sea crystal 75-85%, magnesium chloride 9-11%, and calcium chloride 4-7%, potassium chloride 4-6% regulate, and are mass percent;
In Chi Shui, salt ratio is preferably: sea crystal: magnesium chloride: calcium chloride: potassium chloride is (16:2:1:1);
The food of first three day of megalops larva is ripe yolk; The food of the 4th day to the 10th day is wheel animalcule and water flea class, and the food in later stage is that ripe fish is rotten.
Owing to carrying out above Cultivating techniques, megalops larva grows up to young crab survival rate and brings up to 80%, and young crab is de-becomes time phase difference not quite, and head is more consistent, while reducing in inland-lake the cost cultivating Eriocheir sinensia, improve the quantity and quality of inland-lake commodity crab.
Embodiment
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Embodiment 1:
Early May, be ready in advance cultivate pond, cultivating pool area is 120 ㎡, and the degree of depth is 1.5m, and cultivating the pool wall gradient is 1/3, cultivates bottom pond and is provided with drainpipe; After cultivating pond sterilizing, inject water, depth of water 80cm, by adding sea crystal 384kg, magnesium chloride 48kg, calcium chloride 24kg, potassium chloride 24kg, regulating reservoir water salinity, water temperature 23 DEG C, pH value 8, oxygen content 5mg/L is highly 20-25cm hornwort and fragrant plant mentioned in ancient texts after throwing in sterilizing in pond, area coverage 80%;
Mid-April, water transparence reaches 50cm, air transport carrys out 6 age in days megalops larvas, after arriving, first the overall net cage that will transport immerses and to cultivate in pond 10 minutes, then checkmates, sick megalops larva chooses, by the input of bouncing megalops larva cultivating in pond, input density is 25g/m3, enter first 3 days behind pond and do not change water, throw something and feed every day ripe yolk 50g/m3, and every two hours throw something and feed once.
Enter pond the 4th day to begin, limit desalination limit feeding: injected from top, pond by the water in Bosten, the draining of bottom, pond, every day desalinates 4 hours sooner or later altogether, and every day, quantity of exchanged water was Chi Shui, and coolant-temperature gage remains on 21-25 DEG C; Throw in wheel animalcule and water flea 100g/m3 every day, throw in three every day;
Cultivate after the 10th day, cultivate in pond and be substantially consistent with the salinity of the water in Bosten, temperature, the rotten 300g/m3 of ripe fish of throwing something and feeding every day, can increase and decrease as one sees fit according to food situation, only feeding sooner or later, early feeding accounts for 30% of feeding every day amount; When educating to 3g to young crab increasing, young crab is put into Bosten and cultivates.
Embodiment 2:
Cultivation pond prepares: cultivation tank depth is 1m, and the gradient is, bottom is provided with drainpipe, after sterilizing, inject water, the depth of water is greater than 60cm, pond water salinity regulates 4 ‰, water temperature 25 DEG C, pH value 8.5, oxygen content 6mg/L, within in pond 20 days in advance, throw in the pasture and water after sterilizing, pasture and water area coverage 75%, pasture and water height 20cm, water transparence 40cm;
Megalops larva cultivates daily management: the 5 age in days megalops larvas that transport comes, before entering pond, first overallly will transport in net cage immersion cultivation pond 5 minutes, then megalops larva is thrown in cultivation pond, it is 20g/m3 that megalops larva cultivates density, enter first 2 days behind pond and do not change water, and a food of every two hours throwing something and feeding, throw in that food total amount is megalops larva gross weight every day 250%; Within 3rd day, begin, limit desalination limit feeding, injects the water in local inland-lake from top, pond, the draining of bottom, pond, and every day, quantity of exchanged water was Chi Shui, and every day desalinates 3 hours sooner or later altogether, and pond water temperature remains on 21-25 DEG C; Throwing in quantity of food is 200% of crab gross weight in pond, throws in three every day; Cultivate to after the 12nd day, cultivate in pond consistent with the salinity water of local inland-lake, temperature, the feeding amount of every day is 100% of juvenile crab gross weight, only feeding sooner or later, and feeding morning accounts for 35% of feeding every day amount; When educating to 2.5-3g to young crab increasing, young crab is put into local inland-lake and cultivates;
Described pasture and water are hornwort and fragrant plant mentioned in ancient texts;
In described water quality adjustment step, pond salinity water passes through sea crystal 75%, magnesium chloride 11%, calcium chloride 8%, and potassium chloride 6% regulates, and is mass percent;
The megalops larva food of first four days is ripe yolk, and the food of the 5th day to the 13rd day is wheel animalcule and water flea class, and the food in later stage is that ripe fish is rotten.
Owing to carrying out above Cultivating techniques, megalops larva grows up to young crab survival rate and brings up to 80%, and young crab is de-becomes time phase difference not quite, and head is more consistent, while reducing in inland-lake the cost cultivating Eriocheir sinensia, improve the quantity and quality of inland-lake commodity crab.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. Eriocheir sinensis megalopa is at inland-lake Cultivating techniques, it is characterized in that: mainly comprise the following steps:
Cultivation pond prepares: cultivations tank depth is 1-1.5m, and the gradient is-, cultivation is provided with drainpipe bottom pond; After sterilizing, inject water, the depth of water is greater than 50cm and is less than 100cm, and pond salinity water is regulated at 4-5 ‰ by sea crystal, magnesium chloride, calcium chloride, potassium chloride, water temperature 23-25 DEG C, pH value 7.5-8.5, oxygen content is greater than 4mg/L, within pond 15-20 days in advance, throws in the pasture and water after sterilizing, pasture and water area coverage 75-85%, pasture and water height 20-25cm, water transparence 40-50cm;
Megalops larva cultivates daily management: before the 5-7 age in days megalops larva that transport comes enters pond, first the overall net cage that will transport immerses 5-10 minute in cultivation pond, then megalops larva is thrown in cultivation pond, it is 20-50g/m3 that megalops larva cultivates density, enter first 2 or 3 days behind pond and do not change water, and a food of every two hours throwing something and feeding, throw in the 200-250% that food total amount is megalops larva gross weight every day; Within 3rd or the 4th day, begin, limit desalination limit feeding: the water in local inland-lake is injected from top, pond, the draining of bottom, pond, every day, quantity of exchanged water was not less than Chi Shui, and every day desalinates 3-4 hours sooner or later altogether, and pond water temperature remains on 21-25 DEG C; Throw in the 150-200% that quantity of food is current juvenile crab gross weight, throw in three every day; Cultivate to after 10-12 days, cultivate in pond consistent with the salinity water of local inland-lake, temperature; The feeding amount of every day is the 80-100% of current juvenile crab gross weight, only feeding sooner or later, and early feeding accounts for the 30-35% of feeding every day amount; When educating to 2.5-3g to young crab increasing, young crab is put into local inland-lake and cultivates.
2. Eriocheir sinensis megalopa according to claim 1 is at inland-lake Cultivating techniques, it is characterized in that: pond salinity water is by sea crystal 75-85%, magnesium chloride 9-11%, and calcium chloride 4-8%, potassium chloride 4-6% regulate, and are mass percent.
3. Eriocheir sinensis megalopa according to claim 2 is at inland-lake Cultivating techniques, it is characterized in that: in the water of pond, salt mass ratio is, sea crystal: magnesium chloride: calcium chloride: potassium chloride=16:2:1:1.
4. Eriocheir sinensis megalopa according to claim 1 is at inland-lake Cultivating techniques, it is characterized in that: described pasture and water are hornwort and fragrant plant mentioned in ancient texts.
5. Eriocheir sinensis megalopa according to claim 1 is at inland-lake Cultivating techniques, it is characterized in that: described megalops larva is 6 ages in days.
6. Eriocheir sinensis megalopa according to claim 5 is at inland-lake Cultivating techniques, it is characterized in that: the food of first three day of megalops larva is ripe yolk, and the food of the 4th day to the 10th day is wheel animalcule and water flea class, and the food in later stage is that ripe fish is rotten.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107593545A (en) * | 2017-09-25 | 2018-01-19 | 无为县姚沟杭仁政家庭农场 | A kind of crab ecological cultivation method |
| CN112219763A (en) * | 2020-10-13 | 2021-01-15 | 云南云湖渔业科技有限公司 | Method for cultivating high-quality crab seedlings in southwest low-latitude plateau area |
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| WO2003037077A1 (en) * | 2001-11-02 | 2003-05-08 | The State Of Queensland, Through Its Departement Of Primary Industries | Method and apparatus for aquatic animal husbandry |
| CN1961658A (en) * | 2006-11-28 | 2007-05-16 | 厦门大学 | Blue crab fried desalting breeding method |
| CN102511427A (en) * | 2012-01-05 | 2012-06-27 | 厦门大学 | Desalting method for scylla paramamosian offspring seeds |
| CN102884995A (en) * | 2012-09-21 | 2013-01-23 | 中国水产科学研究院东海水产研究所 | Desalination cultivation method for green mud crab early larvae |
| CN103314904A (en) * | 2013-06-17 | 2013-09-25 | 上海海洋大学 | Method for ecological breeding of large Chinese mitten crabs in pond |
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2015
- 2015-06-30 CN CN201510370176.0A patent/CN105028271A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003037077A1 (en) * | 2001-11-02 | 2003-05-08 | The State Of Queensland, Through Its Departement Of Primary Industries | Method and apparatus for aquatic animal husbandry |
| CN1961658A (en) * | 2006-11-28 | 2007-05-16 | 厦门大学 | Blue crab fried desalting breeding method |
| CN102511427A (en) * | 2012-01-05 | 2012-06-27 | 厦门大学 | Desalting method for scylla paramamosian offspring seeds |
| CN102884995A (en) * | 2012-09-21 | 2013-01-23 | 中国水产科学研究院东海水产研究所 | Desalination cultivation method for green mud crab early larvae |
| CN103314904A (en) * | 2013-06-17 | 2013-09-25 | 上海海洋大学 | Method for ecological breeding of large Chinese mitten crabs in pond |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107593545A (en) * | 2017-09-25 | 2018-01-19 | 无为县姚沟杭仁政家庭农场 | A kind of crab ecological cultivation method |
| CN112219763A (en) * | 2020-10-13 | 2021-01-15 | 云南云湖渔业科技有限公司 | Method for cultivating high-quality crab seedlings in southwest low-latitude plateau area |
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Application publication date: 20151111 |