CN1261020C - Highly efficient seashell fry picking method of shallows factory run and fry picker therefor - Google Patents
Highly efficient seashell fry picking method of shallows factory run and fry picker therefor Download PDFInfo
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- CN1261020C CN1261020C CNB2003101050387A CN200310105038A CN1261020C CN 1261020 C CN1261020 C CN 1261020C CN B2003101050387 A CNB2003101050387 A CN B2003101050387A CN 200310105038 A CN200310105038 A CN 200310105038A CN 1261020 C CN1261020 C CN 1261020C
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- seedling
- collector
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- shellfish
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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 present invention relates to an industrial seedling collecting method with high efficiency for breeding seedlings of mudflat shellfish and a seedling collector which is used by the method. In the method, a seedling collector is put into a seedling breeding pool when larvae are about to carry out attachment metamorphosis, the larvae are attached to the seedling collector, the metamorphosis process is completed under the condition of no sand, and the juvenile shellfish intermediate breeding is carried out. The time that the seedling collector is in the seedling breeding pool is the time that 20% to 60% of mudflat shellfish larvae have eyes, the arrangement mode of the seedling collector in the seedling breeding pool is in a stereo stratification mode, and the seedling collector is composed of a seedling collecting frame, a nylon rope which is connected with the seedling collecting frame, and weight stone. The seedling collecting frame is composed of a support frame of the seedling collecting frame and outer sleeves of bolting silk. The seedling collecting method of the present invention is in the mode of stereo stratification without sand. The present invention has the advantages of high efficiency for seedling collection, high survival rate of juvenile shellfish, rapid growth, simple and convenient operation, low cost, small labor intensity, etc.
Description
Technical field
The marine products intertidal shellfish batch production seed that the present invention relates to aquaculture produces, specifically a kind of intertidal shellfish factorial seedling growth efficiently collect seedling method and used collector.
Background technology
China is mariculture big country, and shellfish culture is dominate in whole mariculture industry, and wherein the output of intertidal shellfish accounts for 20% of China's mariculture gross yield.About 200,000,000 mu of China's existing tidal-flat area area, its availability is at present less than 20%, and the development space of intertidal shellfish aquaculture is very big.Beach imbedded and perched shellfish such as clam, Ruditapes philippinarum, clam, Mactra quadrangularis, Chinese clam and cockle have important economic value, and natural resources amount and cultured output are all very considerable.Above-mentioned shellfish delicious flavour, nutritious, at home and abroad market is all in very great demand.In recent ten years, because excessive adopting caught, the natural resources of some intertidal shellfishs (as clam and Ruditapes philippinarum) sharply reduces, and artificial breeding more and more is subject to people's attention.The seedling raising manners major part of intertidal shellfish is to adopt semi and seedling rearing in earth ponds at present, this dual mode seedling cost is lower, but efficient is lower, the factorial seedling growth mode is because the efficient height, more and more be subject to people's attention, wherein the factorial seedling growth of clam, Ruditapes philippinarum and quahog has been listed country " 863 " plan in.In intertidal shellfish factorial seedling growth process, collection technique is a key technology.Because the intertidal shellfish larva can not be attached on the lace curtaining as the scallop larva, therefore, can not be in intertidal shellfish factorial seedling growth process with lace curtaining as adherance, there are a great difference in its collect seedling mode and scallop.At present, the used adherance of intertidal shellfish factorial seedling growth generally is a fine sand, the method efficient lower (having only one deck) of collecting seedling, and labour intensity is big, juvenile mollusk survival rate low (survival rate is about 30%), growth slow (growth rate 15～25 μ m/d).
Summary of the invention
The object of the present invention is to provide a kind of intertidal shellfish factorial seedling growth efficiently collect seedling method and used collector, adopt the present invention can increase substantially the efficient of intertidal shellfish factorial seedling growth.
To achieve these goals, technical scheme of the present invention is: when larva is about to carry out settlement and metamorphosis, throw in collector in nursery pond, allow larva be attached on the collector, finish metamorphosis process with no emery stick spare, and carry out the juvenile mollusk intermediate rearing; Its time of throwing in collector is 20～60% intertidal shellfish larva when eyespot occurring, and to be that many planar layers are three-dimensional arrange collector the mode in the nursery pond of being invested in; Employing is the planar structure at the end frame of collecting seedling with the bolting silk, and the frame of collecting seedling leaves square space to the current exchange of can supplying water between up and down;
It is good that the best of described collector eyespot occurs with 30～50% intertidal shellfish larva the opportunity of throwing in; The culture density of larva was set according to the difference of shellfish kind during seed produced, and the prelarva density of collecting seedling is generally 5～15/ml water body; Described intertidal shellfish is quahog, clam, Ruditapes philippinarum, clam, Mactra quadrangularis, Chinese clam or cockle.
Used collector is provided with structure by a plurality of frame layering solids of collecting seedling, the frame peripheral hardware bolting silk overcoat of collecting seedling, and the frame of collecting seedling links to each other with rope between up and down; The wherein said frame of collecting seedling is that tube or reinforcing bar surround frame structure; Described bolting silk overcoat can be 100～200 purpose bolting silks; The described frame number of collecting seedling can be 5～8; Described collecting seedling can be connected by nylon rope between the frame, collect seedling frame up and down between spacing be generally 10～30cm; Can under collector, add dropstone or float, to regulate the upper-lower position of collector in nursery pond.
The present invention compared with prior art has more following advantage:
1. the present invention is easy and simple to handle, and cost is low.The collector of the present invention and the method itself of collecting seedling are not subjected to the restriction of application conditions, and application of the present invention needn't be put nursery pond in order, utilizes existing scallop nursery pond, shrimp crab nursery pond and fish nursery pond all can collect seedling; The frame of collecting seedling that utilizes pvc pipe to make can use 5～10 years, and the bolting silk overcoat that collect seedling frame and 100～200 mesh sieve thin,tough silk that utilize that the reinforcing bar of diameter 8～12mm makes are made can use 2～3 years, had reduced seedling cost effectively.
2. the present invention's method of collecting seedling is a layering three dimension spat collection method, can make full use of the useful space, and the efficient of collecting seedling is 5～7 times of conventional method.
3. utilize the present invention to carry out the intertidal shellfish factorial seedling growth, juvenile mollusk survival rate height, growth is fast.The juvenile mollusk survival rate can improve more than 30～50% than conventional method, and growth rate improves more than 20～50% than conventional method.
4. the method for collecting seedling involved in the present invention is the no sand method of efficiently collecting seedling, and has changed in the past that the intertidal shellfish factorial seedling growth utilizes the tradition of fine sand as adherance, has reduced labour intensity.
5. the present invention is applicable to temperature and the salinity condition that various intertidal shellfish factorial seedling growths are required, both can be applicable to collecting seedling of intertidal shellfish factorial seedling growth, can be applicable to the indoor juvenile mollusk intermediate rearing of intertidal shellfish factorial seedling growth again.
Description of drawings
Fig. 1 is a collector structural representation of the present invention.
Embodiment
Below in conjunction with marine products intertidal shellfish quahog, clam, Ruditapes philippinarum and the several exemplary embodiments of clam the present invention is described in further detail, but the present invention not merely is confined in following examples.
Described intertidal shellfish is a quahog; Rectangle (or square) frame that the frame of collecting seedling can surround for the reinforcing bar by the pvc pipe of external diameter 2.0～2.5cm or diameter 8～12mm, present embodiment is that the pvc pipe of external diameter 2.0cm is made, long and wide 60cm and the 50cm of being respectively, the bolting silk overcoat is made by 100 mesh sieve thin,tough silk.Collector is formed (chpn setting) by 6 frames of collecting seedling, and middle connects with nylon rope, collects seedling that spacing is 20cm between the frame, and the bottom connects dropstone.When eyespot appears in 20% larva, in nursery pond, throw in collector.Experiment condition is: water temperature: 23～27 ℃, and salinity: 30～33, the pH value: 7.6～7.8,6/ml of abnormal prelarva density water body.The effect comparative result of collecting seedling in the quahog factorial seedling growth process sees Table 1.
The effect comparative result of collecting seedling in the table 1 quahog factorial seedling growth process
| Classification | Survival rate (%) | Growth rate (μ m/d) | (ten thousand/m of the rates of collecting seedling 3Water body) |
| Do not use collector (being adherance) with fine sand | 33.5 | 22.27 | 43 |
| Use collector | 89.8 | 35.98 | 253 |
As shown in Figure 1, used collector is by 4 three-dimensional (between the upper and lower every 100～300mm, present embodiment is 300mm) structures that are provided with of frame 1 layering of collecting seedling, and the frame 1 peripheral hardware bolting silk overcoat 4 of collecting seedling is collected seedling and used rope 3 to link to each other between the frame 1; The described frame 1 of collecting seedling surrounds framework 2 structures for tube or reinforcing bar; Add dropstone 51 time at collector, to regulate the upper-lower position of collector in nursery pond.
Difference from Example 1 is:
Described intertidal shellfish is a clam; The bolting silk overcoat is made by 200 mesh sieve thin,tough silk.Collector is made up of 7 frames of collecting seedling, and middle connects with nylon rope, collects seedling that spacing is 15cm between the frame, and the bottom connects dropstone.When eyespot appears in 40% larva, in nursery pond, throw in collector, the collecting seedling of intertidal shellfish factorial seedling growth.Experiment condition is: water temperature: 23～26 ℃, and salinity: 28～30, the pH value: 7.6～7.8,7/ml of abnormal prelarva density water body.The effect comparative result of collecting seedling in the clam factorial seedling growth process sees Table 2.
The effect comparative result of collecting seedling in the table 2 clam factorial seedling growth process
| Classification | Survival rate (%) | Growth rate (μ m/d) | (ten thousand/m of the rates of collecting seedling 3Water body) |
| Do not use collector (being adherance) with fine sand | 32.8 | 17.14 | 35 |
| Use collector | 56.7 | 27.37 | 215 |
Difference from Example 1 is:
Described intertidal shellfish is a Ruditapes philippinarum, and the bolting silk overcoat is made by 150 mesh sieve thin,tough silk.Collector is made up of 7 frames of collecting seedling, and collects seedling that spacing is 25cm between the frame, and the bottom connects dropstone.When eyespot appears in 30% larva, in nursery pond, throw in collector.Experiment condition is: water temperature: 23～29 ℃, and salinity: 30～32, the pH value: 7.6～7.8,5/ml of abnormal prelarva density water body.The effect comparative result of collecting seedling in the Ruditapes philippinarum factorial seedling growth process sees Table 3.
The effect comparative result of collecting seedling in the table 3 Ruditapes philippinarum factorial seedling growth process
| Classification | Survival rate (%) | Growth rate (μ m/d) | (ten thousand/m of the rates of collecting seedling 3Water body) |
| Do not use collector (being adherance) with fine sand | 35.5 | 18.18 | 38 |
| Use collector | 60.6 | 28.23 | 185 |
Difference from Example 1 is:
Described intertidal shellfish is a clam, and the bolting silk overcoat is made by 200 mesh sieve thin,tough silk.Collector is made up of 8 frames of collecting seedling, and collects seedling that spacing is 15cm between the frame, and the bottom connects dropstone.When eyespot appears in 55% larva, in nursery pond, throw in collector.Experiment condition is: water temperature: 23～29 ℃, and salinity: 27～30, the pH value: 7.6～7.8,12/ml of abnormal prelarva density water body.The effect comparative result of collecting seedling in the clam factorial seedling growth process sees Table 4.
The effect comparative result of collecting seedling in the table 4 Ruditapes philippinarum factorial seedling growth process
| Classification | Survival rate (%) | Growth rate (μ m/d) | (ten thousand/m of the rates of collecting seedling 3Water body) |
| Do not use collector (being adherance) with fine sand | 38.4 | 21.25 | 40 |
| Use collector | 65.8 | 27.23 | 223 |
In a word, method of collecting seedling that the present invention is designed and collector and in intertidal shellfish factorial seedling growth process effect remarkable, can effectively improve efficient and juvenile mollusk survival rate and growth rate that intertidal shellfish seeds such as quahog, clam, Ruditapes philippinarum, clam produce.
Intertidal shellfish of the present invention also can be Mactra quadrangularis, Chinese clam or cockle.In addition, when the later stage, seed grew into enough big (very heavy), available float was adjusted the position of collector in water.
Claims (4)
1. intertidal shellfish factorial seedling growth method of efficiently collecting seedling is characterized in that: when larva is about to carry out settlement and metamorphosis, throw in collector in nursery pond, allow larva be attached on the collector, finish metamorphosis process with no emery stick spare, and carry out the juvenile mollusk intermediate rearing; Its time of throwing in collector is that 20～60% intertidal shellfish larva is when eyespot occurring, it is characterized in that: the mode that collector is invested in the nursery pond is the three-dimensional layouts of many planar layers, employing is the planar structure at the end frame of collecting seedling with the bolting silk, and the frame of collecting seedling leaves square space to the current exchange of can supplying water between up and down.
2. according to the described a kind of intertidal shellfish factorial seedling growth of claim 1 method of efficiently collecting seedling, it is characterized in that: described intertidal shellfish is quahog, clam, Ruditapes philippinarum, clam, Mactra quadrangularis, Chinese clam or cockle.
3. an intertidal shellfish factorial seedling growth used collector of method of efficiently collecting seedling, it is characterized in that: by a plurality of frame layering solids of collecting seedling structure is set, the frame of collecting seedling is that tube or reinforcing bar surround frame structure, peripheral hardware bolting silk overcoat, the frame of collecting seedling links to each other with rope between up and down, and spacing is 10～30cm.
4. according to the described intertidal shellfish factorial seedling growth of the claim 3 used collector of method of efficiently collecting seedling, it is characterized in that: described bolting silk overcoat is 100～200 purpose bolting silks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101050387A CN1261020C (en) | 2003-11-07 | 2003-11-07 | Highly efficient seashell fry picking method of shallows factory run and fry picker therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101050387A CN1261020C (en) | 2003-11-07 | 2003-11-07 | Highly efficient seashell fry picking method of shallows factory run and fry picker therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1541520A CN1541520A (en) | 2004-11-03 |
| CN1261020C true CN1261020C (en) | 2006-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2003101050387A Expired - Fee Related CN1261020C (en) | 2003-11-07 | 2003-11-07 | Highly efficient seashell fry picking method of shallows factory run and fry picker therefor |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100389651C (en) * | 2005-06-28 | 2008-05-28 | 海南大学 | Mussel harvest attaching device |
| CN104542376A (en) * | 2014-12-12 | 2015-04-29 | 青岛无为保温材料有限公司 | Artificial clam growing method |
| CN109287579B (en) * | 2018-11-15 | 2024-01-16 | 中国科学院海洋研究所 | Shellfish descending flow high-density seedling collection facility and application method thereof |
| CN116391653B (en) * | 2023-02-22 | 2024-03-29 | 中国科学院南海海洋研究所 | Method for judging cement-based adhesive matrix throwing time and improving oyster larva adhesive rate |
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Granted publication date: 20060628 Termination date: 20111107 |