CN104381178A - Cultellus attenuatus offspring seed cultivation method - Google Patents
Cultellus attenuatus offspring seed cultivation method Download PDFInfo
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- CN104381178A CN104381178A CN201410705152.1A CN201410705152A CN104381178A CN 104381178 A CN104381178 A CN 104381178A CN 201410705152 A CN201410705152 A CN 201410705152A CN 104381178 A CN104381178 A CN 104381178A
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- water
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- larva
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- chlorella
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/50—Culture of aquatic animals of shellfish
- A01K61/54—Culture of aquatic animals of shellfish of bivalves, e.g. oysters or mussels
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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
A cultellus attenuatus offspring seed cultivation method solves the problems that a parent oyster is difficult to cultivate and the brood amount is less, the biggest shell length of a young oyster cultivated is 1.8 millimeters, the average shell length is 1.59 millimeters, the culture and proliferation of the cultellus attenuatus cultivated with the method do not need cast bait, and the cultellus attenuatus eat unicellular algae for food, the method also has very great significance in developing low-carbon industry and improving seawater eutrophication and marine ecology environment.
Description
Technical field:
The present invention relates to the cultural technique field of a kind of shellfish, be specifically related to a kind of pocket knife razor clam offspring seed cultivation method.
Background technology:
Pocket knife Cheng Shu razor clam section cutter razor clam belongs to, and all have distribution in China from north to southern region following the line of the sea, Zhoushan only just has in marine site, Shengsi, is mainly distributed in the beach of Maguan, a blue or green husky band.Pocket knife razor clam is because of aesthetic in appearance, salubrious, and meat flavour is delicious and very popular, and price is far away higher than razor clam of hanging.Per kilogram has sold for 200 yuan in the market, and when price is the highest, per kilogram once reached 280 yuan.Within these several years, along with people are to the increase of pocket knife razor clam consumption figure, adopt and catch intensity and strengthen year after year, cause that pocket knife razor clam natural resources amount falls sharply day by day, specification reduces, quality declines.
summary of the invention:
In order to overcome the deficiency that prior art exists, the invention provides a kind of pocket knife razor clam offspring seed cultivation method, the technical solution that the present invention adopts is: a kind of pocket knife razor clam offspring seed cultivation method, comprises the following steps:
(1) artificial induced spawning and larvae rearing: by close shellfish cleaning and sterilizing, be placed in dry ventilation dry in the shade stimulation 5-6h, and then close shellfish is taken out, putting into pond collects seedling on screen frame, aeration is adopted to form stimulation by running water ovulation rate, inflation is stopped after 2-3h, after ovulating and in pond, seawater presents milky time, in water body, ovum density domination is at 6-8/mL, be immersed in water with 330 object screen frames and carry out changing water, until water quality is limpid, in pond, egg cell and sperm are mixed to form fertilized egg, water body is stirred with target, and harmful to unnecessary sperm and other floating thing is stirred into foam-like pull out, carry out the hatching of former pond,
(2) embryo and floating larva are cultivated: the salinity of seawater in pond is adjusted to 23 ~ 26 ‰, fertilized egg is placed in this seawater to hatch, change water morning every day 1 time, total quantity of exchanged water is 30 % to 50 %, every 4-5d falls pond once, water temperature excursion 20 ~ 26 DEG C, pH8.0 ~ 8.2, dissolved oxygen 5 more than mg/L, ammonia nitrogen 0.2 below mg/L, intensity of illumination 500 LX ~ 1000 LX, become after D shape larva until fertilized egg metamorphosis, start bait of throwing something and feeding, throw something and feed once after changing water morning every day, throw something and feed again once at dusk, supplementing evening throws something and feeds once, bait is based on chrysophyceae, little diatom, chlorella is auxiliary, ratio is Jin Zao ︰ little Gui Zao ︰ chlorella=4 ︰ 1 ︰ 1, D type larva is 0.3 ~ 0.9 ten thousand/mL to food density during the larval phase of shell top, continuous charge in larvae cultivation process,
(3) young attachment: floating larva is through the cultivation of 11-12d, when shell reaches 220 um, there is eyespot, cultivate through 5-6 d again, larva starts progressively to transfer to by swimming to crawl to creep, enter the settlement and metamorphosis phase, adopt ooze as adherance, clean with seawater, and filter with 300 order nets, the mud filtered precipitates, get the mud precipitated, tan by the sun under being placed in sunlight, after drying, put into baking oven dry further and sterilize, temperature is 120-125 DEG C, sterilization 3-4h, mud through above-mentioned process is laid at the bottom of pond, thickness is 2-3mm, to crawl as pocket knife razor clam the adherance of phase,
(4) juvenile mollusk is cultivated: namely enter the juvenile mollusk nurturing period after young attachment, in juvenile mollusk culture period, every day changes water 2 times, each quantity of exchanged water 80%, every 6-7d falls pond 1 time, change water or the bait that falls to throw something and feed behind pond at every turn, bait is chrysophyceae, little diatom, chlorella, and ratio is Jin Zao ︰ little Gui Zao ︰ chlorella=3 ︰ 1 ︰ 1, and feeding volume is 2 ~ 40,000/mL.
Described pocket knife razor clam offspring seed cultivation method, described step (2) embryo and floating larva cultivate in every 2-3d working concentration be the penicillin of 1mg/L.
Described pocket knife razor clam offspring seed cultivation method, the ooze in described step (3) is beach surface, seashore mud layer.
The invention has the beneficial effects as follows: the invention provides a kind of pocket knife razor clam offspring seed cultivation method, solve floating larva and cultivate the problem that difficulty is large, young attachment survival rate is low, the pocket knife razor clam aquaculture that the method is cultivated does not need bait throwing in, take unicellular alga as food, this is to development low-carbon (LC) industry, improves seawater eutrophication, improves the marine eco-environment and also have a very big significance.
embodiment:
Below by embodiment, the present invention is described in further detail, but the present invention is not only confined to following examples.
Artificial induced spawning and larvae rearing
By close shellfish cleaning and sterilizing, be placed in dry ventilation dry in the shade stimulation 5-6h, and then close shellfish is taken out, put into pond and collect seedling on screen frame, adopt aeration to form stimulation by running water ovulation rate, stop inflation after 2-3h, examine laying eggs and ejaculation situation of close shellfish.After ovulating and in pond, seawater presents milky time, carry out changing water with 330 object screen frames, until water quality is limpid, in water body, ovum density domination is at 6-8/mL.Pocket knife razor clam is demersal egg, and in pond, egg cell and sperm are mixed to form fertilized egg, needs often to adopt target to stir water body, and harmful to unnecessary sperm and other floating thing is stirred into foam-like pulls out, then carries out the hatching of former pond.
Embryo and floating larva are cultivated
Fertilized egg is hatch in the seawater of 23 ~ 26 ‰ in salinity, morning every day changes water 1 time with siphonage, total quantity of exchanged water is increased to 50 % gradually from 30 %, water temperature excursion 20 ~ 26 DEG C, pH8.0 ~ 8.2, dissolved oxygen 5 more than mg/L, ammonia nitrogen 0.2 below mg/L, intensity of illumination 500 LX ~ 1000 LX.
After abnormal one-tenth D shape larva, start throw something and feed chrysophyceae, little diatom and chlorella, day bait throwing in three times, throws something and feeds after namely changing water morning once, throws something and feeds once at dusk again, and according to the density of cultivating Measures of Algae in Water Body, supplement and throw something and feed once in the evening.Bait is based on chrysophyceae, and little diatom, chlorella are auxiliary, and ratio is Jin Zao ︰ little Gui Zao ︰ chlorella=4 ︰ 1 ︰ 1, food density D type larva is 0.3 ~ 0.9 ten thousand/mL to shell top larval phase.
Change water and fall pond: in seedling raising process, change water every day 1 time, every 4-5d falls pond once.
Inflation: continuous charge in larvae cultivation process, along with larval growth, strengthens aeration quantity gradually.
Diseases prevention: be the penicillin of 1mg/L every 2-3d working concentration.
The young adheres to
Through the cultivation of 11-12d, when shell reaches about 220 um, there is eyespot in floating larva, then cultivates through 5-6 about d, and larva starts progressively to transfer to by swimming to crawl to creep, and enters the settlement and metamorphosis phase.Adherance adopts ooze, scraping seashore beach surface mud layer, and with seawater cleaning, and filter with 300 order nets, the mud filtered precipitates.Get the mud precipitated, tan by the sun under being placed in sunlight, put into baking oven and dry further and sterilize after drying, general temperature is 120-125 DEG C, sterilization 3-4h.Be laid at the bottom of pond by the mud through above-mentioned process, thickness is 2-3mm, the adherance of phase of crawling in this, as pocket knife razor clam.
Juvenile mollusk is cultivated
Namely the juvenile mollusk nurturing period is entered after young attachment, in juvenile mollusk culture period, every day changes water 2 times, each quantity of exchanged water 80%, every 6-7d falls pond 1 time, change water or the bait that falls to throw something and feed behind pond at every turn, bait is chrysophyceae, little diatom, chlorella, and ratio is Jin Zao ︰ little Gui Zao ︰ chlorella=3 ︰ 1 ︰ 1, and feeding volume is 2 ~ 40,000/mL.
Claims (3)
1. a pocket knife razor clam offspring seed cultivation method, is characterized in that, comprises the following steps:
(1) artificial induced spawning and larvae rearing: by close shellfish cleaning and sterilizing, be placed in dry ventilation dry in the shade stimulation 5-6h, and then close shellfish is taken out, putting into pond collects seedling on screen frame, aeration is adopted to form stimulation by running water ovulation rate, inflation is stopped after 2-3h, after ovulating and in pond, seawater presents milky time, in water body, ovum density domination is at 6-8/mL, be immersed in water with 330 object screen frames and carry out changing water, until water quality is limpid, in pond, egg cell and sperm are mixed to form fertilized egg, water body is stirred with target, and harmful to unnecessary sperm and other floating thing is stirred into foam-like pull out, carry out the hatching of former pond,
(2) embryo and floating larva are cultivated: the salinity of seawater in pond is adjusted to 23 ~ 26 ‰, fertilized egg is placed in this seawater to hatch, change water morning every day 1 time, total quantity of exchanged water is 30 % to 50 %, every 4-5d falls pond once, water temperature excursion 20 ~ 26 DEG C, pH8.0 ~ 8.2, dissolved oxygen 5 more than mg/L, ammonia nitrogen 0.2 below mg/L, intensity of illumination 500 LX ~ 1000 LX, become after D shape larva until fertilized egg metamorphosis, start bait of throwing something and feeding, throw something and feed once after changing water morning every day, throw something and feed again once at dusk, supplementing evening throws something and feeds once, bait is based on chrysophyceae, little diatom, chlorella is auxiliary, ratio is Jin Zao ︰ little Gui Zao ︰ chlorella=4 ︰ 1 ︰ 1, D type larva is 0.3 ~ 0.9 ten thousand/mL to food density during the larval phase of shell top, continuous charge in larvae cultivation process,
(3) young attachment: floating larva is through the cultivation of 11-12d, when shell reaches 220 um, there is eyespot, cultivate through 5-6 d again, larva starts progressively to transfer to by swimming to crawl to creep, enter the settlement and metamorphosis phase, adopt ooze as adherance, clean with seawater, and filter with 300 order nets, the mud filtered precipitates, get the mud precipitated, tan by the sun under being placed in sunlight, after drying, put into baking oven dry further and sterilize, temperature is 120-125 DEG C, sterilization 3-4h, mud through above-mentioned process is laid at the bottom of pond, thickness is 2-3mm, to crawl as pocket knife razor clam the adherance of phase,
(4) juvenile mollusk is cultivated: namely enter the juvenile mollusk nurturing period after young attachment, in juvenile mollusk culture period, every day changes water 2 times, each quantity of exchanged water 80%, every 6-7d falls pond 1 time, change water or the bait that falls to throw something and feed behind pond at every turn, bait is chrysophyceae, little diatom, chlorella, and ratio is Jin Zao ︰ little Gui Zao ︰ chlorella=3 ︰ 1 ︰ 1, and feeding volume is 2 ~ 40,000/mL.
2. pocket knife razor clam offspring seed cultivation method according to claim 1, is characterized in that: described step (2) embryo and floating larva cultivate in every 2-3d working concentration be the penicillin of 1mg/L.
3. pocket knife razor clam offspring seed cultivation method according to claim 1, is characterized in that: the ooze in described step (3) is beach surface, seashore mud layer.
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| CN201410705152.1A CN104381178A (en) | 2014-12-01 | 2014-12-01 | Cultellus attenuatus offspring seed cultivation method |
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| CN201410705152.1A CN104381178A (en) | 2014-12-01 | 2014-12-01 | Cultellus attenuatus offspring seed cultivation method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107018931A (en) * | 2017-04-01 | 2017-08-08 | 福建省水产研究所 | A kind of method for inducing Ruditapes philippinarum larval metamorphosis |
| CN107182869A (en) * | 2017-06-05 | 2017-09-22 | 丹东市水产技术推广总站 | A kind of razor shell offspring seed cultivation method |
| CN111011274A (en) * | 2019-11-06 | 2020-04-17 | 大连市现代农业生产发展服务中心(大连市农业科学研究院) | Industrial breeding method of urechis unicinctus |
| CN113812543A (en) * | 2020-06-19 | 2021-12-21 | 国投生物科技投资有限公司 | Algae powder type seedling raising bait, application thereof and method for raising seedlings of prawns in daphnia-shaped period |
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| CN102100194A (en) * | 2010-12-02 | 2011-06-22 | 象山红升水产养殖有限公司 | Fry rearing method for sinonovacula constricta |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107018931A (en) * | 2017-04-01 | 2017-08-08 | 福建省水产研究所 | A kind of method for inducing Ruditapes philippinarum larval metamorphosis |
| CN107182869A (en) * | 2017-06-05 | 2017-09-22 | 丹东市水产技术推广总站 | A kind of razor shell offspring seed cultivation method |
| CN111011274A (en) * | 2019-11-06 | 2020-04-17 | 大连市现代农业生产发展服务中心(大连市农业科学研究院) | Industrial breeding method of urechis unicinctus |
| CN111011274B (en) * | 2019-11-06 | 2022-04-01 | 大连市现代农业生产发展服务中心(大连市农业科学研究院) | Industrial breeding method of urechis unicinctus |
| CN113812543A (en) * | 2020-06-19 | 2021-12-21 | 国投生物科技投资有限公司 | Algae powder type seedling raising bait, application thereof and method for raising seedlings of prawns in daphnia-shaped period |
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Application publication date: 20150304 |