CN100496228C - Device for collecting tidal flat seashell seed - Google Patents
Device for collecting tidal flat seashell seed Download PDFInfo
- Publication number
- CN100496228C CN100496228C CNB2005100443689A CN200510044368A CN100496228C CN 100496228 C CN100496228 C CN 100496228C CN B2005100443689 A CNB2005100443689 A CN B2005100443689A CN 200510044368 A CN200510044368 A CN 200510044368A CN 100496228 C CN100496228 C CN 100496228C
- Authority
- CN
- China
- Prior art keywords
- bolting silk
- seedling
- pvc pipe
- overcoat
- collector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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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
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- Farming Of Fish And Shellfish (AREA)
Abstract
Disclosed a seedling-picking device in the field of cultivating the seedling of shellfish on the beach mainly comprises three parts as a bolting silk coat made from 100-200 items bolting silk, a rectangular or square bracket formed by PVC pipe whose diameter ranges from 20-30mm and the fine sand. Wherein the peripheral part of the bolting silk coat is sewed with edge cove while the nylon cord is through the edge cover and exit from the median of one side of this bolting silk coat, while the medians of anther three sides and the four angles are sewed with fixing cords; the bracket of the seedling-picking device is formed by the PVC pipe in the rectangular or square type while the diameter is 20-30mm and the fine sand is filled into the PVC pipe to adjust the weight of the whole seedling-picking device, so the seedling-picking device can reach the bottom of seedling cultivating pool; and the bolting silk coat fixedly covers the PVC pipe bracket to form the integrated seedling-picking device.
Description
Technical field
The marine products intertidal shellfish batch production seed that the present invention relates to aquaculture produces, the improvement technology of used collector in specifically relevant a kind of intertidal shellfish factorial seedling growth process.
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 used new collector in a kind of intertidal shellfish factorial seedling growth process.
To achieve these goals, technical scheme of the present invention is: rectangle or three parts such as square rack 4 and fine sand that the bolting silk overcoat 5 that this collector is mainly made by 100～200 mesh sieve thin,tough silk, Φ 20～30mmPVC circumference of cannon bone become are formed.Be sewed with bound edge around the bolting silk overcoat, be installed with nylon rope 3 in the bound edge, the port of export of nylon rope is positioned at bolting silk overcoat center on one side, and other centers, three limits of bolting silk overcoat are sewed with static line 1, and four jiaos of the bolting silk overcoat also are sewed with static line 2.Rectangle or square rack that the support of collector is made by Φ 20～30mmPVC pipe are equipped with fine sand in the pvc pipe, to regulate the weight of whole collector, make collector can sink at the bottom of the nursery pond; The static line of four jiaos in above-mentioned bolting silk overcoat is lain in four jiaos of pvc pipe support, the bolting silk overcoat is fixed on the pvc pipe support, the bolting silk overcoat of tying tight then is the interior nylon rope of bound edge all around, and lie on the static line of other centers, three limits of bolting silk overcoat, make fixing outer the wrapping on the pvc pipe support of bolting silk overcoat, form a complete collector.
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, Coelomactra antiquata and cockle etc.
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.Collector of the present invention is 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 collector support that utilizes pvc pipe to make can use 5～10 years, and the bolting silk overcoat that 100～200 mesh sieve thin,tough silk are made can use 2～3 years, had reduced seedling cost effectively.
2. 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.
3. utilize collector of the present invention to collect seedling and collect seedling, changed in the past that the intertidal shellfish factorial seedling growth utilizes the tradition of fine sand as adherance, reduced labour intensity for no sand.
4. 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.
1 is median raphe static line, the 2nd among the figure, angle static line, the 3rd, static line, the 4th in the net, U-PVC pipe holder, the 5th, bolting silk net overcoat.
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.
Embodiment 1
Described intertidal shellfish is a quahog; Rectangle or square that the collector support is surrounded by the pvc pipe of Φ 20mm, present embodiment is that the pvc pipe of Φ 20mm is made, long and wide 600m and the 500mm of being respectively, the bolting silk overcoat is made by 100 mesh sieve thin,tough silk.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) |
| Do not use collector (being adherance) with fine sand | 33.5 | 22.27 |
| Use collector | 89.8 | 35.98 |
Embodiment 2
Difference from Example 1 is:
Described intertidal shellfish is a clam; The bolting silk overcoat is made by 200 mesh sieve thin,tough silk.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) |
| Do not use collector (being adherance) with fine sand | 32.8 | 17.14 |
| Use collector | 56.7 | 27.37 |
Embodiment 3
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.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) |
| Do not use collector (being adherance) with fine sand | 35.5 | 18.18 |
| Use collector | 60.6 | 28.23 |
Embodiment 4
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.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) |
| Do not use collector (being adherance) with fine sand | 38.4 | 21.25 |
| Use collector | 65.8 | 27.23 |
In a word, utilize collector effect in intertidal shellfish factorial seedling growth process of made of the present invention remarkable, can effectively improve the juvenile mollusk survival rate and the growth rate of intertidal shellfishs such as quahog, clam, Ruditapes philippinarum, clam.Collector of the present invention also can be used for the intermediate rearing of juvenile mollusks such as Mactra quadrangularis, Chinese clam, Coelomactra antiquata and cockle.
Claims (1)
1. one kind is used for the collector that intertidal shellfish is grown seedlings, it is characterized in that said collector is mainly by bolting silk overcoat (5), support (4) and fine sand three parts are formed, said bolting silk overcoat, make by 100～200 mesh sieve thin,tough silk, around the bolting silk overcoat, be sewed with bound edge, be installed with nylon rope (3) in the bound edge, the port of export of nylon rope is positioned at bolting silk overcoat center on one side, other centers, three limits of bolting silk overcoat are sewed with static line (1), four jiaos of the bolting silk overcoat also are sewed with static line (2), said support is the rectangle or the square rack that are become by Φ 20～30mmPVC circumference of cannon bone, and fine sand is housed in the pvc pipe; The static line of four jiaos in bolting silk overcoat is lain in four jiaos of pvc pipe support, the bolting silk overcoat is fixed on the pvc pipe support, the bolting silk overcoat of tying tight then is the interior nylon rope of bound edge all around, and lie on the static line of other centers, three limits of bolting silk overcoat, make fixing outer the wrapping in of bolting silk overcoat constitute said collector on the pvc pipe support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100443689A CN100496228C (en) | 2005-08-04 | 2005-08-04 | Device for collecting tidal flat seashell seed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100443689A CN100496228C (en) | 2005-08-04 | 2005-08-04 | Device for collecting tidal flat seashell seed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1729764A CN1729764A (en) | 2006-02-08 |
| CN100496228C true CN100496228C (en) | 2009-06-10 |
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ID=35962210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100443689A Expired - Fee Related CN100496228C (en) | 2005-08-04 | 2005-08-04 | Device for collecting tidal flat seashell seed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100496228C (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1552201A (en) * | 2003-06-06 | 2004-12-08 | 中国科学院海洋研究所 | Collective breeding apparatus and its use |
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2005
- 2005-08-04 CN CNB2005100443689A patent/CN100496228C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1552201A (en) * | 2003-06-06 | 2004-12-08 | 中国科学院海洋研究所 | Collective breeding apparatus and its use |
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| Publication number | Publication date |
|---|---|
| CN1729764A (en) | 2006-02-08 |
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Granted publication date: 20090610 Termination date: 20110804 |