CN110432190A - A kind of Low-salinity sea area little yellow croaker seed high-survival rate propagation method - Google Patents

A kind of Low-salinity sea area little yellow croaker seed high-survival rate propagation method Download PDF

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Publication number
CN110432190A
CN110432190A CN201910683653.7A CN201910683653A CN110432190A CN 110432190 A CN110432190 A CN 110432190A CN 201910683653 A CN201910683653 A CN 201910683653A CN 110432190 A CN110432190 A CN 110432190A
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salinity
water
seawater
pond
survival rate
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CN201910683653.7A
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Chinese (zh)
Inventor
刘峰
詹炜
谢庆平
楼宝
陈红林
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Zhejiang Academy of Agricultural Sciences
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Zhejiang Academy of Agricultural Sciences
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Priority to CN201910683653.7A priority Critical patent/CN110432190A/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
    • A01K61/17Hatching, e.g. incubators
    • 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)

Abstract

A kind of Low-salinity sea area little yellow croaker seed high-survival rate propagation method, belongs to seawater fish rearing of fingerling field.Characterized by the following steps: 1) spawning pond salinity adjusted;2) fertilization ovum collecting;3) high quality fertilized egg of scophthatmus separates;4) incubating oosperm;5) breeding water desalination and seed management.The little yellow croaker offspring seed cultivation method in Low-salinity sea area of the invention while also contributing to easily collecting high quality fertilized egg of scophthatmus it is possible to prevente effectively from high quality fertilized egg of scophthatmus influences since water salinity is droning in bottom of pond dead in embryonic development even embryo development procedure in spawning pond.Nursery pond salinity can make newly hatched larvae normal growth and development under minimum impact with specific speed reduction in this method, it is ensured that highest survival rate.

Description

A kind of Low-salinity sea area little yellow croaker seed high-survival rate propagation method
Technical field
The invention belongs to seawater fish rearing of fingerling fields, and in particular to a kind of Low-salinity sea area little yellow croaker seed is high Survival rate propagation method.
Background technique
Little yellow croaker fertilized eggs are buoyant egg, and at 26 or more seawater salinity, fertilized eggs float on water body upper layer, at this time fertilized eggs Ability normal development, if seawater salinity is lower, floating state can not be presented in fertilized eggs, by the normal hair of extreme influence fertilized eggs It educates, and then causes a large amount of fertilized eggs dead.It learns according to investigations, different regions seawater salinity has larger difference, such as Zhejiang sometimes The coastal different sea area salinity in river are there are bigger difference, such as the island Zhoushan Of Zhejiang Province Deng Bu Sea Near seawater salinity 28 or so, and Zhejiang Zhoushan Mount Dai island Sea Near salinity is between 17-22, in addition, the western Sea Near the Hu Gang seawater salinity of Xiangshan of Zhejiang Province is in 22.5- Between 24.5;It can only be found from the investigation result of Along Zhejiang Coast, the salinity difference in different sea areas is huge.It can be seen that salinity Relatively low sea area will be unable to be normally carried out little yellow croaker seed breeding, in consideration of it, the present invention adjusts effectively to solve this by salinity One problem can obtain the high high-quality seed of little yellow croaker survived.
Summary of the invention
In view of the problems of the existing technology, it is an object of the invention to design to provide a kind of Low-salinity sea area little yellow croaker seedling The technical solution of kind high-survival rate propagation method.
A kind of Low-salinity sea area little yellow croaker seed high-survival rate propagation method, it is characterised in that including following step It is rapid:
1) spawning pond salinity is adjusted
40h after parent population is hastened parturition passes through seawater salinity in addition sea salt adjusting spawning pond to 26.5;
2) fertilization ovum collecting
48h after hastening parturition collects floating fertilized eggs, the seawater flushing that the floating fertilized eggs salinity of collection is 26.5;
3) high quality fertilized egg of scophthatmus separates
The fertilized eggs of collection are transferred in the cylindrical glass steel wire bucket of bottom cone, add the sea that salinity is 26.5 in bucket in advance Water stands 30min, collects floating fertilized eggs, disinfection, the seawater flushing that salinity is 26.5;
4) incubating oosperm
Isolated fertilized eggs are transferred to the cement pit that seawater salinity is 26.5 and are hatched;
5) breeding water desalination and seed management
The 6h after hatching membrane is slowly injected into nature seawater with the rate of the 1.5%/h of water body in pond, realizes seawater salinity Desalination, and then reach normal seawater salinity, then subsequent seed management is carried out to prelarva.
A kind of Low-salinity sea area little yellow croaker seed high-survival rate propagation method, it is characterised in that in the step 1) Parent population is hastened parturition specifically: at 15-16 DEG C of nature seawater temperature, the parent population for selecting gonadal maturation carries out artificial induced spawning, hastens parturition Parent population afterwards is put in a suitable place to breed in 4 × 5 × 1.5m3In spawning pond, parent population quantity in pond: 1 age 600-700 tail, 2 age 300-400 tails, Sex ration column=2:1, change water 80% after hastening parturition, it is each primary to change water sooner or later daily.
A kind of Low-salinity sea area little yellow croaker seed high-survival rate propagation method, it is characterised in that in the step 4) It is long 5 × 7 × 1.6m that cement pit, which hatches specification,3Cement pit hatching, hatch water depth 75cm, each cement pit places fertilization Ovum 4L.
A kind of Low-salinity sea area little yellow croaker seed high-survival rate propagation method, it is characterised in that in the step 5) Breeding water desalination specifically: after prelarva incubation of membrane 6h, process is added continuously with the speed of the 1.5%/h of water volume in pond Dark precipitating and the nature seawater of sand filtration, gradually decrease seawater salinity in breeding spand, when water level rises to 1.5m, stop adding Water;Dead ovum is removed by siphonage after incubation of membrane 72h, open-mouthed bait wheel animalcule is added in draining to the 1.2m depth of water, and adds concentration Algae solution, wheel animalcule strengthen 12h using concentration algae and nutritious spirulina, continue continuously to add obscure shallow lake and sand filtration with the speed of 1.5%/h Nature seawater, when water level rises to 1.5m, stop plus water;Hereafter it feeds wheel animalcule after draining 1/5 daily and adds concentration Algae, and the obscure nature seawater to form sediment with sand filtration is added continuously with the speed of 1.5%/h, until reaching natural seawater salinity.
The little yellow croaker offspring seed cultivation method in Low-salinity sea area of the invention is it is possible to prevente effectively from high quality fertilized egg of scophthatmus in spawning pond Death in embryonic development even embryo development procedure is influenced in bottom of pond since water salinity is droning, while also contributing to easily collecting High quality fertilized egg of scophthatmus.Nursery pond salinity can make newly hatched larvae normal growth under minimum impact with specific speed reduction in this method Development, it is ensured that highest survival rate.
Specific embodiment
Further illustrate the present invention with reference to embodiments.
Embodiment
1. spawning pond salinity is adjusted
At 15-16 DEG C of nature seawater temperature, the parent population for selecting gonadal maturation carries out artificial induced spawning, and the parent population after hastening parturition is put in a suitable place to breed In 4 × 5 × 1.5m3In (length × width × height) cement pit, parent population quantity in pond: 1 age 600-700 tail;2 age 300-400 tails, Sex ration column=2:1, change water 80% after hastening parturition, change that water is each primary, and 40h spawning pond passes through addition sea salt (sea after hastening parturition sooner or later daily Water sunning obtains) seawater salinity 26.5 is adjusted, sea salt needs before spawning pond is added through 80 mesh mesh bag impurity screenings.
2. fertilized eggs are collected in seine
48h after hastening parturition collects fertilized eggs by seine, stops inflation 10-15min before seine, to float on water on high-quality ovum Body upper layer, convenient for collecting;High-quality floating ovum is collected using the nylon net bag of 40 mesh, the floating ovum of collection is soft with 26.5 seawater It rinses primary.
3. high quality fertilized egg of scophthatmus separates
Fertilized eggs after preliminary flushing are transferred to 0.5m3In the cylindrical glass steel wire bucket of bottom cone, seawater salinity is pre- in bucket 26.5 are first adjusted to, oxygenation 5min makes the fertilized eggs collected scatter, in order to prevent the too high influence separating effect of triploidy rate, The amount of every barrel of placement fertilized eggs controls within 3L, stops oxygenation 30min, is sufficiently separated fertilized eggs high-quality and inferior, collects The high quality fertilized egg of scophthatmus of floating, is sterilized using povidone iodine irrigation and disinfection, and rear 26.5 seawater is softly rinsed 3-4 times, thoroughly removed Povidone iodine residual.
4. incubating oosperm
Fertilized eggs after disinfection cleaning are transferred to seawater salinity and are pre-adjusted to 26.5 5 × 7 × 1.6m3The water of (length × width × height) Mud sump hatching, hatches water depth 75cm, and each cement pit places the high quality fertilized egg of scophthatmus 4L collected.
5. the desalination of newly hatched larvae aquaculture pond salinity and seed management
(1) determination of the optimum amount of water spraying
It puts each 200 tail of little yellow croaker prelarva that the hatching of same batch touches in a suitable place to breed in 12 300L experiment buckets, is divided into 4 groups, it is right respectively Answering salinity is 17.5,20.0,23.5 and 26.5 groups, and every group 3 parallel, the initial salinity 26.5 of breeding barrel seawater, continuous uninterrupted Oxygenation.After initial water body 150L, incubation of membrane 6h, according to 1.5%/h, 3%/h, 4.5%/h and 6%/h of water volume in experiment bucket Rate of water injection carries out salinity adjusting, and the natural seawater salinity due to testing locating sea area is 23.5, so 17.5,20.0 and 26.5 Processing group adjusts acquisition by the fresh water after gas explosion and by the sea salt that seawater sunning obtains.From experimental result it can be found that with The rate annotation of 1.5%/h adjusts salinity survival rate highest, and effect is best.
Influence (average value ± standard error) of the 1 different injection rate of table to newly hatched larvae survival rate
Note: the identical expression difference of same row letter is not significant, on the contrary then significant difference.
(2) breeding water desalination and seed rearing in hatchery
Through experiment it is found that when carrying out seed cultivation pool sea water desalination after prelarva incubation of membrane 6h, with 1.5% of water volume in pond/ Slowly continuously addition gradually decreases seawater salinity in breeding spand by dark precipitating and the nature seawater of sand filtration to the speed of h, to When water level rises to 1.5m, stops adding water, lasted 72h apart from membrane at this time.
Dead ovum is removed by siphonage after incubation of membrane 72h, open-mouthed bait wheel animalcule (8-10 is added in draining to the 1.2m depth of water A/mL), and concentration algae solution (1mL/100L) is added, wheel animalcule utilizes concentration algae (5g/100L) and spirulina (1g/100L) nutrition Strengthen 12h, continues the nature seawater for slowly continuously adding obscure shallow lake and sand filtration with the speed of 1.5%/h, rise to 1.5m to water level When, stop adding water.Hereafter it daily after draining 1/5, feeds wheel animalcule and adds concentration algae, and continuously added with the speed of 1.5%/h The nature seawater in obscure shallow lake and sand filtration, continuous a couple of days, (natural seawater salinity 17.5 needed 14 days;Salinity is 20, needs 12 It;When salinity is 23.5,9 days are needed) after, water salinity and natural seawater salinity difference are within 0.2, to the intimate nothing of seed It influences.Food transformation mode and later period domestication feed the methods of fish treasured feed and construct referring to a kind of little yellow croaker family of granted patent And breeding superior families method, publication number CN106577382A.
The present invention is it is possible to prevente effectively from high quality fertilized egg of scophthatmus is sent out since water salinity is droning in bottom of pond influence embryo in spawning pond Death in even embryo development procedure is educated, while also contributing to easily collecting high quality fertilized egg of scophthatmus.Nursery pond salinity is slow in the technology The slow use for reducing technology can make first day of the first period of the hot season prelarva normal growth and development under minimum impact, it is ensured that highest survival rate.
The present invention gathers embodiment and is described, and those skilled in the art know, are not departing from essence of the invention In the case where mind and range, various changes and equivalence replacement can be carried out to these features and embodiment.In addition, in the present invention Introduction under, can modify to these features and embodiment to adapt to particular situation and material without departing from this hair Bright spirit and scope.Therefore, the present invention is not limited by specific implementation example disclosed herein, fallen with the application's Embodiment in scope of the claims belongs to protection scope of the present invention.

Claims (4)

1. a kind of Low-salinity sea area little yellow croaker seed high-survival rate propagation method, it is characterised in that the following steps are included:
1) spawning pond salinity is adjusted
40h after parent population is hastened parturition passes through seawater salinity in addition sea salt adjusting spawning pond to 26.5;
2) fertilization ovum collecting
48h after hastening parturition collects floating fertilized eggs, the seawater flushing that the floating fertilized eggs salinity of collection is 26.5;
3) high quality fertilized egg of scophthatmus separates
The fertilized eggs of collection are transferred in the cylindrical glass steel wire bucket of bottom cone, add the sea that salinity is 26.5 in bucket in advance Water stands 30min, collects floating fertilized eggs, disinfection, the seawater flushing that salinity is 26.5;
4) incubating oosperm
Isolated fertilized eggs are transferred to the cement pit that seawater salinity is 26.5 and are hatched;
5) breeding water desalination and seed management
The 6h after hatching membrane is slowly injected into nature seawater with the rate of the 1.5%/h of water body in pond, realizes seawater salinity Desalination, and then reach normal seawater salinity, then subsequent seed management is carried out to prelarva.
2. a kind of Low-salinity sea area little yellow croaker seed high-survival rate propagation method as described in claim 1, it is characterised in that institute It states parent population in step 1) to hasten parturition specifically: at 15-16 DEG C of nature seawater temperature, the parent population for selecting gonadal maturation is carried out manually It hastens parturition, the parent population after hastening parturition is put in a suitable place to breed in 4 × 5 × 1.5m3In spawning pond, parent population quantity in pond: 1 age 600-700 tail, 2 ages 300-400 tail, sex ration column=2:1, changes water 80% after hastening parturition, it is each primary to change water sooner or later daily.
3. a kind of Low-salinity sea area little yellow croaker seed high-survival rate propagation method as described in claim 1, it is characterised in that institute Stating cement pit hatching specification in step 4) is long 5 × 7 × 1.6m3Cement pit hatching, hatch water depth 75cm, each cement Place fertilized eggs 4L in pond.
4. a kind of Low-salinity sea area little yellow croaker seed high-survival rate propagation method as described in claim 1, it is characterised in that institute It states breeding water in step 5) to desalinate specifically: after prelarva incubation of membrane 6h, connect with the speed of the 1.5%/h of water volume in pond Continuous addition gradually decreases seawater salinity in breeding spand, rises to water level by dark precipitating and the nature seawater of sand filtration When 1.5m, stop adding water;Dead ovum is removed by siphonage after incubation of membrane 72h, open-mouthed bait wheel is added in draining to the 1.2m depth of water Worm, and concentration algae solution is added, wheel animalcule strengthens 12h using concentration algae and nutritious spirulina, and continuation is continuously added with the speed of 1.5%/h The nature seawater for adding obscure shallow lake and sand filtration stops adding water when water level rises to 1.5m;Hereafter it is fed after draining 1/5 daily Wheel animalcule simultaneously adds concentration algae, and the nature seawater in obscure shallow lake and sand filtration is continuously added with the speed of 1.5%/h, until reaching nature Seawater salinity.
CN201910683653.7A 2019-07-26 2019-07-26 A kind of Low-salinity sea area little yellow croaker seed high-survival rate propagation method Pending CN110432190A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110692557A (en) * 2019-11-18 2020-01-17 浙江省农业科学院 Method for cultivating yellow croaker by artificial seawater salinity desalination
CN113455426A (en) * 2021-07-19 2021-10-01 宁德市鼎诚水产有限公司 Breeding method of low-salt-resistant large yellow croaker
CN114009379A (en) * 2021-12-14 2022-02-08 浙江省农业科学院 Method and device for preparing desalted fingerlings of small yellow croakers

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CN102763615A (en) * 2012-06-29 2012-11-07 福建省水产研究所 Full-manual breeding method for megalonibea fusca
CN105580763A (en) * 2016-01-08 2016-05-18 中国水产科学研究院南海水产研究所 Artificial low-salt fry breeding method for eleutheronema tetradactylum
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110692557A (en) * 2019-11-18 2020-01-17 浙江省农业科学院 Method for cultivating yellow croaker by artificial seawater salinity desalination
CN113455426A (en) * 2021-07-19 2021-10-01 宁德市鼎诚水产有限公司 Breeding method of low-salt-resistant large yellow croaker
CN114009379A (en) * 2021-12-14 2022-02-08 浙江省农业科学院 Method and device for preparing desalted fingerlings of small yellow croakers
CN114009379B (en) * 2021-12-14 2022-11-22 浙江省农业科学院 Method and device for preparing desalted fingerlings of small yellow croakers

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