CN101904311B - Method and device for hatching prawn larva - Google Patents

Method and device for hatching prawn larva Download PDF

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Publication number
CN101904311B
CN101904311B CN201010248923A CN201010248923A CN101904311B CN 101904311 B CN101904311 B CN 101904311B CN 201010248923 A CN201010248923 A CN 201010248923A CN 201010248923 A CN201010248923 A CN 201010248923A CN 101904311 B CN101904311 B CN 101904311B
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China
Prior art keywords
hatching
young
prawn
bung
pail
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Expired - Fee Related
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CN201010248923A
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Chinese (zh)
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CN101904311A (en
Inventor
赵永贞
谢达详
陈秀荔
陈晓汉
阮志德
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GUANGXI INSTITUTE OF FISHERIES
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GUANGXI INSTITUTE OF FISHERIES
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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 method for hatching a prawn larva, which is characterized by comprising the following steps of: 1. designing a prawn hatching device; 2. preparing a hatching water body; 3. fertilizing and hatching prawn ova; and 4. collecting and washing the larva. The hatching device adopted for realizing the method for hatching a prawn larva comprises a hatching barrel, a hatching barrel cover, an illuminating device and a collecting and washing device, wherein the hatching barrel and the hatching barrel cover are integrated into a whole; a light hole and an inflating pipe which is connected with a micropore plug are arranged on the hatching barrel cover; and the illuminating device is arranged above the light hole. By utilizing the phototaxis of a prawn, strong prawn larvae are selected, and weak prawn larvae and dead ova are removed, which is convenient for collecting the high-quality larva and greatly improving the survival rate of a seedling. The invention can be alsoused for simultaneously collecting seedlings from a plurality of hatching barrels, thereby saving time and labor and being simple, particle and effective.

Description

To shrimps young hatching m and device
Technical field
The invention belongs to the aquaculture of aquatic animal technical field, particularly a kind of to shrimps young hatching m and device.
Background technology
Shrimp culture is one of of paramount importance industry in China's culture fishery, and for example: Penaeus Vannmei, Penaeus monodon, japonicus, penaeus penicillatus etc., wherein Penaeus Vannmei is cultured has become one of pillar industry of mariculture industry.Development through decades; Although China's shrimp culture has obtained proud economic performance; But people recognize that gradually whether the germplasm of culturing excellent performance is arranged is the key that guarantees the stable development of shrimp culture industry; Therefore improve shrimps seed selection correlation technique link, carrying out the shrimps breed breeding is the effective measures of dealing with problems.In prawn family selective breeding process; Can obtain the high-quality family young be one of key of carrying out smoothly family selective breeding; Traditional family young hatching and the method for collecting are the female shrimp of mating to be put into an incubation vessel that fills the suitable size of hatching water lay eggs; Fertilized egg is pulled the young out with the dredger of 250~300 meshes after hatching under the suitable incubation condition, carries out family and grows seedlings.The shortcoming of this way is to checkmate the weak young of ovum, vigor and the energetic young separately; Thereby cause on the one hand the technical staff to the grow seedlings erroneous judgement of link family young number of entering; Influence family and set up the standardization requirement of cultivating young number in the process; The decomposition of the young a little less than dead on the other hand ovum and the vigor will directly cause the growing seedlings deterioration of water quality influences the growth and the survival rate of shrimp seedling.So; 200720151744.9) and " a kind of hatching apparatus to shrimps, fish or the crab class young " (application number: 200920052830.3) etc. of Zhongshan University's invention someone has invented the hatching apparatus of the prawn young, like " the good year shrimp ovum incubator " of: gold-tinted brightness and the invention of Huanghai Sea dragon (application number:.
Yet; The inventor finds; Can checkmate the basically ovum and the young of above patent separates, but also has certain shortcoming, and promptly technology still can not be distinguished the weak young of vigor and the energetic young now; So can only with physique more weak mix breed with the good young of physique, had a strong impact on the quality of shrimp seedling.Therefore, developing the method that the young a little less than the energetic high-quality young and dead ovum and the vigor is effectively separated, is that the family link of growing seedlings guarantees to cultivate the key of young number of criteria requirement, is to improve shrimp seedling quality, set up the prerequisite of family smoothly.
Summary of the invention
The objective of the invention is to overcome the defective of prior art, a kind of efficient, simple, practical can the energetic high-quality young collection and the ovum of checkmating separates with the weak young of vigor to shrimps young hatching m and device is provided.
Technical scheme of the present invention is:
Shrimps young hatching m and device may further comprise the steps: one. the design of prawn hatching apparatus, two. the preparation of hatching water body, three. the shrimp feritilization of ovum and hatching, four. the young is collected and washing.
Above-described method to the hatching of the shrimps young is characterized in: it is to adopt illumination to form the method for hot spot that the young is collected, and utilizes the phototaxis of prawn to select the energetic shrimps young and remove the weak shrimps young of vigor and dead ovum.
Above-described to shrimps young hatching apparatus; Comprise hatching apparatus, lighting device, collection wash mill are characterized in: described hatching apparatus comprises hatching pail and hatching bung; Hatching pail is formed one with the hatching bung; Hatching pail covers the gas tube that is provided with loophole and is connected with the micropore plug, and lighting device is placed on the top of loophole, and described collection wash mill comprises collects washing disk, siphon pipe and collection seedling net.
Above-described hatching apparatus, hatching pail is processed by nontoxic opaque material with the hatching bung.
Above-described micropore is gas stone or foraminate plastics, Sponge.
Above-described lighting device comprises lampshade and electricity-saving lamp.
The invention has the beneficial effects as follows:
Compared with prior art; Method and apparatus provided by the invention has following outstanding feature: the hatching apparatus that utilizes opaque material to make, can be effectively the young and dead ovum a little less than the energetic young and the vigor be separated, and be convenient to the collection of the high-quality young; Survival rate of seedling improves greatly; The present invention can also collect seedling simultaneously to a plurality of hatching pails, thereby saves time and artificial, simple, practicality, effective.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further:
Fig. 1 is the structural representation of hatching apparatus of the present invention.
Fig. 2 is for collecting the structural representation of wash mill.
Fig. 3 is the structural representation of hatching pail 1.
Fig. 4 is the structural representation of hatching bung 2.
Fig. 5 is for collecting the structural representation of washing disk 9.
Fig. 6 is the structural representation of collection seedling net 10.
Figure elements title and numbering explanation:
Hatching pail 1, hatching bung 2, lighting device 3, gas tube 4, siphon pipe 5, collection wash mill 6, loophole 7, air-vent 8, collection washing disk 9, collection seedling net 10.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described shrimps young hatching m and device.
Like Fig. 1, Fig. 3, shown in Figure 4; Shrimps young hatching apparatus is comprised hatching pail 1, hatching bung 2, lighting device 3, gas tube 4, collects wash mill 6, loophole 7 and air-vent 8; Hatching pail 1 is processed by nontoxic opaque material with hatching bung 2 and is formed one; Hatching bung 2 is provided with loophole 7 and air-vent 8; The gas tube 4 that is connected with the micropore plug is installed on the air-vent 8 of hatching bung 2, and lighting device 3 is positioned over loophole 7 tops of hatching bung 2, and described lighting device 3 comprises lampshade and electricity-saving lamp.
Like Fig. 2, Fig. 5, shown in Figure 6, collect wash mill 6 and comprise collection washing disk 9, siphon pipe 5 and collection seedling net 10.
Operation principle of the present invention is following: the shrimps nauplius has phototaxis, and the vigor of the stronger young of phototaxis is strong more, and dead ovum is prone to be sunken to the bottom.The present invention passes through the hatching apparatus that is designed owing to be opaque material; So only unique hot spot that the loophole 7 on lighting device 3 and the hatching bung 2 is made at hatching pail 1 water surface; Utilize the phototactic biology characteristics of the shrimps young; The energetic young is concentrated on the hot spot place, thereby will sink to the dead ovum at the bottom of the hatching pail and phototaxis is poor, move slowly that the young effectively separates, guarantee to collect the high-quality young.
Embodiment
Utilize the present invention Penaeus Vannmei to be hatched and to the young method of separating after the hatching:
1. the design of Penaeus Vannmei hatching apparatus:
The present invention propose to shrimps young hatching apparatus; Comprise hatching apparatus; Lighting device 3, the young are collected wash mill 6; Hatching apparatus comprises hatching pail 1, hatching bung 2 and the gas tube 4 that is connected with the micropore plug, and the gas tube 4 that is connected with the micropore plug is installed in the air-vent 8 of hatching bung 2 central authorities, the loophole 7 that to be provided with a diameter at the intermediate distance place at air-vent 8 and bung edge be 4cm; Lighting device 3 comprises mitriform lampshade and electricity-saving lamp; The young is collected wash mill 6 and comprises a young collection washing disk 9, siphon pipe 5 and collection seedling net 10, and the mesh scope of collection seedling net is at 250~300 orders.
2. the preparation of hatching water body
Conscientiously wash hatching apparatus with fresh water,, the gas tube that is connected with the micropore plug 4 is installed on the hatching bung 2 with the rinse of sterilization seawater; Using the aperture is that 0.5 micron filter filters salinity 28~32 ‰, and the pH value is at 8.0~8.4 clean seawater, and with it hatching pail 1 is added to 2/3 place; According to hatching pail water body volume; Dissolving 5ppm EDTA with in seawater in heavy metal, the PVP-I of dissolving 0.3~0.5ppm is further sterilized to seawater, the tight hatching of lid bung 2;, subsequent use with aerating device to the abundant aeration of water body.
3. the shrimp feritilization of ovum and hatching
The abundant aeration of hatching water body transferred to suitable degree (water surface is little boiling shape) with aeration quantity after 6 hours.The female shrimp of artificial insemination or natural mating is put into hatching pail 1 gently, and the water temperature stability that guarantees hatching pail 1 is at 30 ± 0.3 ℃, the tight hatching of lid bung 2 is set up a constant temperature, quiet female shrimp lays eggs and environment of hatching.
4. the young is collected and washing
Between female shrimp ovulation back 12~24 hours; Female shrimp in the hatching pail 1 is dragged for away, and the tight hatching of lid bung 2 temporarily stops at inflation in the bucket; And rapidly with lighting device 3 be arranged on hatching bung 2 loopholes 7 directly over 20~30cm place and open light switch; After 15~20 minutes, remove hatching bung 2 gently, find the young that assembles with flashlight near the water surface under the loophole 7; With siphon pipe 5 with the high-quality young siphon of concentrating to putting into the collection seedling net 10 that the young that fills the water of growing seedlings is collected washing disk 9 in advance, uses the entering shrimp seed rearing stage behind the clean seawer washing.
Embodiments of the invention are hatchings of seed selection family and the test of collection seedling that carry out at aquatic products research institute Penaeus Vannmei genetic breeding center in Guangxi.In April, 2010 is to June; Use the prawn young hatching apparatus of the present invention's design, technical measures of the present invention and step are carried out in strictness, hatch and collected the young of more than 120 female shrimps; Success will the energetic young with vigor a little less than the young separate with ovum extremely, the young abnormal rate of collection is low, energetic.Use the young of collecting through the present invention, carry out in the practice of family cultivation at the family seedling growing process of using this central standard subsequently, the family incubation rate reaches more than 98%, and the survival rate of seedling average out to is more than 80%.

Claims (1)

1. hatching m to the shrimps young is characterized in that: may further comprise the steps:
(A) design of prawn hatching apparatus; It comprises hatching pail (1), hatching bung (2), lighting device (3) and collects wash mill (6); Hatching pail (1) and hatching bung (2) are formed one; Hatching bung (2) is provided with loophole (7) and is connected with the gas tube (4) of micropore plug, and lighting device (3) is placed on the top of loophole (7), and described collection wash mill (6) comprises collects washing disk (9), siphon pipe (5) and collection seedling net (10); Described hatching pail (1) and hatching bung (2) are processed by nontoxic opaque material;
Described lighting device (3) comprises lampshade and electricity-saving lamp;
(B) fresh water washing hatching apparatus is at first adopted in the preparation of hatching water body, with the rinse of sterilization seawater; The gas tube that is connected with the micropore plug (4) is installed in hatching bung (2), and using the aperture is that 0.5 micron filter filters salinity 28~32 ‰, and the pH value is at 8.0~8.4 clean seawater; And hatching pail (1) is added to 2/3 place with it; According to hatching pail (1) water body volume, dissolving 5ppm EDTA with in seawater in heavy metal, the PVP-I of dissolving 0.3~0.5ppm is further sterilized to seawater;
(C) the shrimp feritilization of ovum and hatching;
(D) young is collected and washing, and it is the method that adopts illumination that the described young is collected, and utilizes the phototaxis of prawn to select the energetic shrimps young and remove the weak shrimps young of vigor and dead ovum after the hatching.
CN201010248923A 2010-08-10 2010-08-10 Method and device for hatching prawn larva Expired - Fee Related CN101904311B (en)

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Application Number Priority Date Filing Date Title
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CN101904311B true CN101904311B (en) 2012-10-17

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102715116B (en) * 2012-07-10 2013-08-07 中国科学院广州生物医药与健康研究院 Zebra fish breeding method
CN106234275B (en) * 2016-08-26 2022-01-11 广东金阳生物技术有限公司 Screening device and screening method for high-activity prawn nauplii
CN106719200A (en) * 2016-12-15 2017-05-31 雷州市海威水产养殖有限公司 A kind of Penaeus Vannmei nauplius method for optimizing
CN110720412A (en) * 2019-12-03 2020-01-24 江苏省海洋水产研究所 In-vitro hatching device and method for shrimp fertilized eggs
CN113349116A (en) * 2021-07-26 2021-09-07 集美大学 Method for improving survival rate of purple sea urchin larvae

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3678899A (en) * 1971-04-01 1972-07-25 Sternco Ind Inc Shrimp hatchery
CN2088332U (en) * 1991-06-07 1991-11-13 金澳企业股份有限公司 Shrimps hatching barrel device
CN100455188C (en) * 2006-12-21 2009-01-28 张玉满 Outdoor earth pond ecological culturing of portunid juvenile crabs
CN101185426B (en) * 2007-11-20 2010-09-29 中国水产科学研究院黄海水产研究所 Specific pathogen free Chinese shrimp zero water-changing seedling production process
CN101720684B (en) * 2008-11-03 2012-02-08 中国水产科学研究院淡水渔业研究中心 Method for in vitro incubation of macrobrachium nipponense
CN201374955Y (en) * 2009-03-17 2010-01-06 中山大学 Hatching device for young of shrimps, fish or crabs
CN201709243U (en) * 2010-08-10 2011-01-19 广西壮族自治区水产研究所 Incubation apparatus for prawn larva

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