CN107211927A - A kind of selective breeding method for disease-resistant superior strains of paralichthys olivaceus - Google Patents

A kind of selective breeding method for disease-resistant superior strains of paralichthys olivaceus Download PDF

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Publication number
CN107211927A
CN107211927A CN201710416792.4A CN201710416792A CN107211927A CN 107211927 A CN107211927 A CN 107211927A CN 201710416792 A CN201710416792 A CN 201710416792A CN 107211927 A CN107211927 A CN 107211927A
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disease
resistant
lefteye flounder
family
fry
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施晓峰
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ZHOUSHAN PUTUO XINGHAI CULTIVATION HIGH-QUALITY SEEDLING SEED SELECTION INSTITUTE
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ZHOUSHAN PUTUO XINGHAI CULTIVATION HIGH-QUALITY SEEDLING SEED SELECTION INSTITUTE
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Priority to CN201710416792.4A priority Critical patent/CN107211927A/en
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K61/00Culture of aquatic animals
    • A01K61/10Culture of aquatic animals of fish
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01KANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K61/00Culture of aquatic animals
    • A01K61/10Culture of aquatic animals of fish
    • A01K61/13Prevention or treatment of fish diseases
    • 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

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Zoology (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Farming Of Fish And Shellfish (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)

Abstract

The invention discloses a kind of selective breeding method for disease-resistant superior strains of paralichthys olivaceus, seed selection step is:Build up lefteye flounder family, determine half lethal concentration, the disease-resistant second generation of seed selection lefteye flounder, the disease-resistant third generation of seed selection lefteye flounder.Have the beneficial effect that:Simple to operate, without highly difficult operation, reproducibility is strong, alleviates the workload of breeding;The bioactive peptide that injection amino acid sequence is SCASRCKSRRCRARRCGYFGICKCFRC in metainfective lefteye flounder water is cultivated, above-mentioned bioactive peptide will not can be directly reached small intestine, be digested and assimilated by small intestine by pepsin and trypsin digestion in lefteye flounder body;The formation speed of leucocyte and macrophage in lefteye flounder body can be significantly improved, the nospecific immunity of lefteye flounder is improved;The obtained disease-resistant third generation of lefteye flounder is significant and application value to the resistance of Vibrio anguillarum, breeding survival rate raising 30 ~ 55% to China's lefteye flounder cultivation.

Description

A kind of selective breeding method for disease-resistant superior strains of paralichthys olivaceus
Technical field
Field is cultivated the present invention relates to the seed selection of lefteye flounder fish, and in particular to a kind of selective breeding method for disease-resistant superior strains of paralichthys olivaceus.
Background technology
Selection and use is also known as line breeding, is a kind of most basic means of fish breeding work.Selection and use is more with growth The economic characters such as rate, cultivation survival rate, premunition, resistance and qualitative character target are selected, and are the bases of fish breeding Research method.System of selection mainly includes colony's selection, mixing selection, families selecting and comprehensive selection etc..This method simplicity, It is effective, it is suitable for the strong animal of the such reproductive capacity of fish, so being the method commonly used during fish are cultivated.Lefteye flounder is cold temperature Property, bottom is dwelt type seawater fish, is the important sea-farming economic fish of the countries such as China, Japan and South Korea.
But, long-term inbred and high-density breeding causes lefteye flounder germplasm to be degenerated, and grows slack-off, premunition decline, Disease is caused to take place frequently, yield declines, and huge economic losses are brought to lefteye flounder aquaculture industry.Traditional fish disease treatment method mainly by Using antibiotic, and a large amount of use of antibiotic can not only produce the problems such as medicament residue, drug resistance and environmental pollution, and right There is also potential influence for the health of consumer.Vibrio anguillarum is one kind that maximum is endangered in lefteye flounder bacterial disease, lefteye flounder cultivating process In, because of infection Vibrio anguillarum, the survival rate reduction of lefteye flounder brings larger economic loss to China's lefteye flounder cultivation.
Prior art such as Authorization Notice No. is CN101911918B Chinese invention patent, discloses a kind of lefteye flounder disease-resistant excellent Non-defective unit system selective breeding method, including lefteye flounder unexpected mass incident;Lefteye flounder family selective breeding;Also the molecular labeling including the disease-resistant family of lefteye flounder is aided in Seed selection;Or include the artificial gynogenesis seed selection of the disease-resistant family of lefteye flounder;Or include the inbreeding seed selection of the disease-resistant family of lefteye flounder.With lefteye flounder Establish the disease-resistant excellent strain selection of China's seawater fish first for material, cultivate what anti-Eel vibriosises power was significantly improved Lefteye flounder excellent strain, breeding survival rate improves 20 ~ 47%, and growth rate improves more than 20%.This method is selected for fish disease-resistant variety Educate and open new technological approaches, popularization and application are suitably carried out in all cultured fishes, to the disease-resistant prevalent variety cultivation of cultured fishes Significant and application value.But this method is cumbersome, workload is huge, and the breeding survival rate of lefteye flounder need to be carried It is high.
The content of the invention
It is an object of the invention to provide one kind it is simple to operate, workload is less, the good tooth of obtained lefteye flounder disease-resistant performance The disease-resistant excellent strain selection of flounder.
The present invention is directed to the problem of being mentioned in background technology, and the technical scheme taken is:A kind of disease-resistant superior strains of paralichthys olivaceus Selection, including build up lefteye flounder family, determine half lethal concentration, the disease-resistant second generation of seed selection lefteye flounder, seed selection lefteye flounder the disease-resistant 3rd Generation.The obtained disease-resistant third generation of lefteye flounder is to the resistance of Vibrio anguillarum, breeding survival rate raising 30 ~ 55%.
Build up lefteye flounder family step to collect the lefteye flounder fry from country variant or marine site, select to advise in each geographical population Lattice are neat, the fry of physique healthy and strong is cultivated and screened, and is selection intensity with 5% when fry growth is to 10 ~ 13 centimetres, Individual 150 ~ 250 big tails are selected from 3000 ~ 5000 tail fries and carry out individually cultivation up to maturation, and are used as the disease-resistant choosing of lefteye flounder Educate the first generation;Family is set up by intraspecific hybridization:By the raun of the milter or raun of disease-resistance population respectively with Different population Or milter carries out pairing breeding and sets up family, or a geographical population and the hybridization of another geographical population are set up into family;In fish When seedling closes on incubation of membrane, it is transferred into nursery cylinder and is cultivated, a family is cultivated per cylinder, and per cubic meter of water is trained Educate 5000 ~ 10000 tail prelarvas.Abundant lefteye flounder parent is obtained with species hybridization by intraspecific hybridization and diverse geographic location, Seed selection operation for after provides the gene pool of abundance.
It is, when fry rearing is to 3.5 ~ 5.5 monthly age, 150 ~ 250 tails to be chosen from each family to determine half lethal concentration step Fry carries out Vibrio anguillarum immersion infection:The population mixture of the identical quantity fry from each family is chosen, it is dilute with physiological saline It is 20 ~ 30OD to release cultured Vibrio anguillarum bacterium solution to concentration, above-mentioned bacterium solution is diluted to 50 with seawater, 100,200,400, 800 times of various concentrations, then 100 ~ 200 tail mixed family fries are placed in the seawater of various concentrations bacterium solution, immersion infection 2 ~ 6 Gone to after hour and observation is cultivated in fresh seawater, the fry death rate of various concentrations group is calculated in subsequent 5 ~ 15 days, will be drawn The concentration for playing 40 ~ 50% fry death is defined as half lethal concentration.
The disease-resistant second generation step of seed selection lefteye flounder is that lefteye flounder is infected using the Vibrio anguillarum bacterium solution of half lethal concentration, is calculated The survival rate of each family fry, calculates each according to the survival rate, mating pattern, Parent of family source and family setup time The odds ratio of family premunition, chooses disease-resistant family fry and is used as the disease-resistant second generation of lefteye flounder.The disease-resistant second generation step of seed selection lefteye flounder It is middle each to cultivate the infection of each family in the sink with fish, inject bioactive peptide in water, the concentration of bioactive peptide for 0.2 ~ 0.6mg/L.The amino acid sequence of bioactive peptide is SCASRCKSRRCRARRCGYFGICKCFRC.Above-mentioned bioactive peptide will not be by Pepsin and trypsin digestion in lefteye flounder body, can directly reach small intestine, be digested and assimilated by small intestine;Lefteye flounder body can be significantly improved The formation speed of interior leucocyte and macrophage, improves the nospecific immunity of lefteye flounder.
The disease-resistant third generation step of seed selection lefteye flounder is, by the disease-resistant second generation inbreeding seed selection of lefteye flounder or artificial gynogenesis seed selection, to obtain To the disease-resistant third generation of lefteye flounder.
Compared with prior art, the advantage of the invention is that:1)Simple to operate, without highly difficult operation, reproducibility is strong, subtracts The light workload of breeding;2)Injection amino acid sequence is in metainfective lefteye flounder water is cultivated SCASRCKSRRCRARRCGYFGICKCFRC bioactive peptide, above-mentioned bioactive peptide will not be by pepsin and pancreas in lefteye flounder body Protease hydrolyzed, can directly reach small intestine, be digested and assimilated by small intestine;Leucocyte and macrophage in lefteye flounder body can be significantly improved Formation speed, improves the nospecific immunity of lefteye flounder;3)The obtained disease-resistant third generation of lefteye flounder is deposited to the resistance of Vibrio anguillarum, cultivation Motility rate improves 30 ~ 55%, and China's lefteye flounder cultivation is significant and application value.
Specific embodiment
The present invention program is described further below by embodiment:
Embodiment 1:
A kind of selective breeding method for disease-resistant superior strains of paralichthys olivaceus, including build up lefteye flounder family, determine that half lethal concentration, seed selection lefteye flounder are disease-resistant The second generation, the disease-resistant third generation of seed selection lefteye flounder.The obtained disease-resistant third generation of lefteye flounder is to the resistance of Vibrio anguillarum, breeding survival rate raising 48%。
Build up lefteye flounder family step to collect the lefteye flounder fry from country variant or marine site, select to advise in each geographical population Lattice are neat, the fry of physique healthy and strong is cultivated and screened, and is selection intensity with 5% when fry growth is to 12 centimetres, from 200 tails of individual greatly are selected in 4000 tail fries and carry out individually cultivation up to maturation, and are used as the disease-resistant seed selection first generation of lefteye flounder;It is logical Cross intraspecific hybridization and set up family:Raun or milter by the milter or raun of disease-resistance population respectively with Different population are matched somebody with somebody Family is set up to breeding, or a geographical population and the hybridization of another geographical population are set up into family;Close on and hatch in fry During film, it is transferred into nursery cylinder and is cultivated, a family is cultivated per cylinder, and per cubic meter of water cultivates 6000 tails son Fish.Abundant lefteye flounder parent is obtained with species hybridization by intraspecific hybridization and diverse geographic location, the seed selection operation after being Sufficient gene pool is provided.
It is, when fry rearing is to 4 monthly age, 200 tail fries to be chosen from each family and carry out eel to determine half lethal concentration step Vibrios immersion infection:The population mixture of the identical quantity fry from each family is chosen, has been cultivated with normal saline dilution Vibrio anguillarum bacterium solution to concentration be 25OD, above-mentioned bacterium solution is diluted to 50 with seawater, 100,200,400,800 times different dense Degree, then 150 tail mixed family fries are placed in the seawater of various concentrations bacterium solution, immersion infection goes to fresh seawater after 4 hours Middle cultivation observation, calculates the fry death rate of various concentrations group in subsequent 10 days, by dead dense of the fry for causing 45% Degree is defined as half lethal concentration.
The disease-resistant second generation step of seed selection lefteye flounder is that lefteye flounder is infected using the Vibrio anguillarum bacterium solution of half lethal concentration, is calculated The survival rate of each family fry, calculates each according to the survival rate, mating pattern, Parent of family source and family setup time The odds ratio of family premunition, chooses disease-resistant family fry and is used as the disease-resistant second generation of lefteye flounder.The disease-resistant second generation step of seed selection lefteye flounder It is middle each to cultivate the infection of each family in the sink with fish, bioactive peptide is injected in water, the concentration of bioactive peptide is 0.5mg/ L.The amino acid sequence of bioactive peptide is SCASRCKSRRCRARRCGYFGICKCFRC.Above-mentioned bioactive peptide will not be by lefteye flounder body Interior pepsin and trypsin digestion, can directly reach small intestine, be digested and assimilated by small intestine;It can significantly improve white thin in lefteye flounder body Born of the same parents and the formation speed of macrophage, improve the nospecific immunity of lefteye flounder.
The disease-resistant third generation step of seed selection lefteye flounder is, by the disease-resistant second generation inbreeding seed selection of lefteye flounder or artificial gynogenesis seed selection, to obtain To the disease-resistant third generation of lefteye flounder.
Embodiment 2:
A kind of selective breeding method for disease-resistant superior strains of paralichthys olivaceus, including build up lefteye flounder family, determine that half lethal concentration, seed selection lefteye flounder are disease-resistant The second generation, the disease-resistant third generation of seed selection lefteye flounder.The obtained disease-resistant third generation of lefteye flounder is to the resistance of Vibrio anguillarum, breeding survival rate raising 50%。
Build up lefteye flounder family step to collect the lefteye flounder fry from country variant or marine site, select to advise in each geographical population Lattice are neat, the fry of physique healthy and strong is cultivated and screened, and is selection intensity with 5% when fry growth is to 10 centimetres, from 150 tails of individual greatly are selected in 3000 tail fries and carry out individually cultivation up to maturation, and are used as the disease-resistant seed selection first generation of lefteye flounder;It is logical Cross intraspecific hybridization and set up family:Raun or milter by the milter or raun of disease-resistance population respectively with Different population are matched somebody with somebody Family is set up to breeding, or a geographical population and the hybridization of another geographical population are set up into family;Close on and hatch in fry During film, it is transferred into nursery cylinder and is cultivated, a family is cultivated per cylinder, and per cubic meter of water cultivates 6000 tails son Fish.Abundant lefteye flounder parent is obtained with species hybridization by intraspecific hybridization and diverse geographic location, the seed selection operation after being Sufficient gene pool is provided.
It is, when fry rearing is to 4.5 monthly age, the progress of 150 tail fries to be chosen from each family to determine half lethal concentration step Vibrio anguillarum immersion infection:The population mixture of the identical quantity fry from each family is chosen, has been cultivated with normal saline dilution Good Vibrio anguillarum bacterium solution to concentration is 26OD, above-mentioned bacterium solution is diluted into 50 with seawater, 100,200,400,800 times different dense Degree, then 100 tail mixed family fries are placed in the seawater of various concentrations bacterium solution, immersion infection goes to fresh sea after 2 ~ 6 hours Observation is cultivated in water, the fry death rate of various concentrations group is calculated in subsequent 10 days, the fry for causing 45% is dead Concentration is defined as half lethal concentration.
The disease-resistant second generation step of seed selection lefteye flounder is that lefteye flounder is infected using the Vibrio anguillarum bacterium solution of half lethal concentration, is calculated The survival rate of each family fry, calculates each according to the survival rate, mating pattern, Parent of family source and family setup time The odds ratio of family premunition, chooses disease-resistant family fry and is used as the disease-resistant second generation of lefteye flounder.The disease-resistant second generation step of seed selection lefteye flounder It is middle each to cultivate the infection of each family in the sink with fish, bioactive peptide is injected in water, the concentration of bioactive peptide is 0.5mg/ L.The amino acid sequence of bioactive peptide is SCASRCKSRRCRARRCGYFGICKCFRC.Above-mentioned bioactive peptide will not be by lefteye flounder body Interior pepsin and trypsin digestion, can directly reach small intestine, be digested and assimilated by small intestine;It can significantly improve white thin in lefteye flounder body Born of the same parents and the formation speed of macrophage, improve the nospecific immunity of lefteye flounder.
The disease-resistant third generation step of seed selection lefteye flounder is, by the disease-resistant second generation inbreeding seed selection of lefteye flounder or artificial gynogenesis seed selection, to obtain To the disease-resistant third generation of lefteye flounder.
Embodiment 3:
A kind of selective breeding method for disease-resistant superior strains of paralichthys olivaceus, including build up lefteye flounder family, determine that half lethal concentration, seed selection lefteye flounder are disease-resistant The second generation, the disease-resistant third generation of seed selection lefteye flounder.The obtained disease-resistant third generation of lefteye flounder is to the resistance of Vibrio anguillarum, breeding survival rate raising 43%。
Build up lefteye flounder family step to collect the lefteye flounder fry from country variant or marine site, select to advise in each geographical population Lattice are neat, the fry of physique healthy and strong is cultivated and screened, and is selection intensity with 5% when fry growth is to 12 centimetres, from 200 tails of individual greatly are selected in 4000 tail fries and carry out individually cultivation up to maturation, and are used as the disease-resistant seed selection first generation of lefteye flounder;It is logical Cross intraspecific hybridization and set up family:Raun or milter by the milter or raun of disease-resistance population respectively with Different population are matched somebody with somebody Family is set up to breeding, or a geographical population and the hybridization of another geographical population are set up into family;Close on and hatch in fry During film, it is transferred into nursery cylinder and is cultivated, a family is cultivated per cylinder, and per cubic meter of water cultivates 7000 tails son Fish.Abundant lefteye flounder parent is obtained with species hybridization by intraspecific hybridization and diverse geographic location, the seed selection operation after being Sufficient gene pool is provided.
It is, when fry rearing is to 4 monthly age, 200 tail fries to be chosen from each family and carry out eel to determine half lethal concentration step Vibrios immersion infection:The population mixture of the identical quantity fry from each family is chosen, has been cultivated with normal saline dilution Vibrio anguillarum bacterium solution to concentration be 24OD, above-mentioned bacterium solution is diluted to 50 with seawater, 100,200,400,800 times different dense Degree, then 120 tail mixed family fries are placed in the seawater of various concentrations bacterium solution, immersion infection goes to fresh seawater after 4 hours Middle cultivation observation, calculates the fry death rate of various concentrations group in subsequent 10 days, by dead dense of the fry for causing 46% Degree is defined as half lethal concentration.
The disease-resistant second generation step of seed selection lefteye flounder is that lefteye flounder is infected using the Vibrio anguillarum bacterium solution of half lethal concentration, is calculated The survival rate of each family fry, calculates each according to the survival rate, mating pattern, Parent of family source and family setup time The odds ratio of family premunition, chooses disease-resistant family fry and is used as the disease-resistant second generation of lefteye flounder.The disease-resistant second generation step of seed selection lefteye flounder It is middle each to cultivate the infection of each family in the sink with fish, bioactive peptide is injected in water, the concentration of bioactive peptide is 0.4mg/ L.The amino acid sequence of bioactive peptide is SCASRCKSRRCRARRCGYFGICKCFRC.Above-mentioned bioactive peptide will not be by lefteye flounder body Interior pepsin and trypsin digestion, can directly reach small intestine, be digested and assimilated by small intestine;It can significantly improve white thin in lefteye flounder body Born of the same parents and the formation speed of macrophage, improve the nospecific immunity of lefteye flounder.
The disease-resistant third generation step of seed selection lefteye flounder is, by the disease-resistant second generation inbreeding seed selection of lefteye flounder or artificial gynogenesis seed selection, to obtain To the disease-resistant third generation of lefteye flounder.
Routine operation in the operating procedure of the present invention is well known to those skilled in the art, herein without repeating.
Technical scheme is described in detail embodiment described above, it should be understood that it is described above only For the specific embodiment of the present invention, it is not intended to limit the invention, all any modifications made in the spirit of the present invention, Supplement or similar fashion replacement etc., should be included in the scope of the protection.
SEQUENCE LISTING
<110>Culturing high-quality seedling election effects institute of Zhoushan Putuo Xinghai County
<120>A kind of selective breeding method for disease-resistant superior strains of paralichthys olivaceus
<130> 1
<160> 1
<170> PatentIn version 3.5
<210> 1
<211> 27
<212> PRT
<213>It is artificial synthesized
<400> 1
Ser Cys Ala Ser Arg Cys Lys Ser Arg Arg Cys Arg Ala Arg Arg Cys
1 5 10 15
Gly Tyr Phe Gly Ile Cys Lys Cys Phe Arg Cys
20 25

Claims (6)

1. a kind of selective breeding method for disease-resistant superior strains of paralichthys olivaceus, including build up lefteye flounder family, determine that half lethal concentration, seed selection lefteye flounder resist The sick second generation, the disease-resistant third generation of seed selection lefteye flounder, it is characterised in that:The disease-resistant second generation step of described seed selection lefteye flounder is to be caused using half The Vibrio anguillarum bacterium solution of dead concentration is infected lefteye flounder, calculates the survival rate of each family fry, according to the survival rate of family, mating Mode, Parent source and family setup time calculate the odds ratio of each family premunition, choose disease-resistant family fry conduct The disease-resistant second generation of lefteye flounder.
2. a kind of selective breeding method for disease-resistant superior strains of paralichthys olivaceus according to claim 1, it is characterised in that:Described seed selection tooth The infection of each family is each cultivated in the sink with fish in the disease-resistant second generation step of flounder, bioactive peptide is injected in water, activity is short The concentration of peptide is 0.2 ~ 0.6mg/L.
3. a kind of selective breeding method for disease-resistant superior strains of paralichthys olivaceus according to claim 2, it is characterised in that:Described is active short The amino acid sequence of peptide is SCASRCKSRRCRARRCGYFGICKCFRC.
4. a kind of selective breeding method for disease-resistant superior strains of paralichthys olivaceus according to claim 1, it is characterised in that:Described builds up tooth Flounder family step selects neat specification, constitution in each geographical population to be good for collect the lefteye flounder fry from country variant or marine site Strong fry is cultivated and screened, and is selection intensity with 5%, from 3000 ~ 5000 tails when fry growth is to 10 ~ 13 centimetres 150 ~ 250 tails of individual greatly are selected in fry and carry out individually cultivation up to maturation, and are used as the disease-resistant seed selection first generation of lefteye flounder;Pass through Family is set up in intraspecific hybridization:Raun or milter by the milter or raun of disease-resistance population respectively with Different population are matched Family is set up in breeding, or a geographical population and the hybridization of another geographical population are set up into family;Incubation of membrane is closed in fry When, it is transferred into nursery cylinder and is cultivated, a family is cultivated per cylinder, and per cubic meter of water cultivates 5000 ~ 10000 tails Prelarva.
5. a kind of selective breeding method for disease-resistant superior strains of paralichthys olivaceus according to claim 1, it is characterised in that:Described determination half Lethasl concentration step is, when fry rearing is to 3.5 ~ 5.5 monthly age, 150 ~ 250 tail fries progress Vibrio anguillarum to be chosen from each family Immersion infection:The population mixture of the identical quantity fry from each family is chosen, with normal saline dilution cultured eel Vibrios bacterium solution to concentration is 20 ~ 30OD, above-mentioned bacterium solution is diluted into 50 with seawater, 100,200,400,800 times of various concentrations, 100 ~ 200 tail mixed family fries are placed in the seawater of various concentrations bacterium solution again, immersion infection goes to fresh sea after 2 ~ 6 hours Observation is cultivated in water, the fry death rate of various concentrations group is calculated in subsequent 5 ~ 15 days, the fry for causing 40 ~ 50% is dead The concentration died is defined as half lethal concentration.
6. a kind of selective breeding method for disease-resistant superior strains of paralichthys olivaceus according to claim 1, it is characterised in that:Described seed selection tooth The disease-resistant third generation step of flounder is, by the disease-resistant second generation inbreeding seed selection of lefteye flounder or artificial gynogenesis seed selection, to obtain lefteye flounder the disease-resistant 3rd Generation.
CN201710416792.4A 2017-06-06 2017-06-06 A kind of selective breeding method for disease-resistant superior strains of paralichthys olivaceus Pending CN107211927A (en)

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Publication number Priority date Publication date Assignee Title
CN101810148A (en) * 2010-04-28 2010-08-25 中国水产科学研究院黄海水产研究所 Cross breeding method of fine variety of paralichthysolivaceus
CN101911918A (en) * 2010-03-18 2010-12-15 中国水产科学研究院黄海水产研究所 Selective breeding method for disease-resistant superior strains of paralichthys olivaceus
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CN103005164A (en) * 2012-12-29 2013-04-03 青岛农业大学 Compound nucleotide immunoenhancer for paralichthys olivaceus
US20140298495A1 (en) * 2011-03-23 2014-10-02 Georges Balma Method for obtaining a triploid interspecific hybrid of meagre and red drum

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Publication number Priority date Publication date Assignee Title
CN101699998B (en) * 2009-11-03 2011-10-12 中国水产科学研究院黄海水产研究所 Selection and culture method of excellent breed large-tooth flounder featuring fast growth and high survival rate
CN101911918A (en) * 2010-03-18 2010-12-15 中国水产科学研究院黄海水产研究所 Selective breeding method for disease-resistant superior strains of paralichthys olivaceus
CN101810148A (en) * 2010-04-28 2010-08-25 中国水产科学研究院黄海水产研究所 Cross breeding method of fine variety of paralichthysolivaceus
US20140298495A1 (en) * 2011-03-23 2014-10-02 Georges Balma Method for obtaining a triploid interspecific hybrid of meagre and red drum
CN103005164A (en) * 2012-12-29 2013-04-03 青岛农业大学 Compound nucleotide immunoenhancer for paralichthys olivaceus

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雷光高等: "小肽对牙鲆幼鱼的生长、消化酶活性及肝脏抗氧化能力的影响", 《水产养殖》 *

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