CN101720708A - Method for improving molt synchronism of indoor industrially-cultured prawns - Google Patents
Method for improving molt synchronism of indoor industrially-cultured prawns Download PDFInfo
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- CN101720708A CN101720708A CN201010011472A CN201010011472A CN101720708A CN 101720708 A CN101720708 A CN 101720708A CN 201010011472 A CN201010011472 A CN 201010011472A CN 201010011472 A CN201010011472 A CN 201010011472A CN 101720708 A CN101720708 A CN 101720708A
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- prawn
- molt
- synchronism
- wavelength light
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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 invention discloses a method for improving molt synchronism of indoor industrially-cultured prawns. The method is characterized in that light color is changed in circadian rhythm during the culture production of the prawns, namely the light color is changed from short-wavelength light to long-wavelength light; and in certain illumination period, after the illumination begins, the irradiation of the short-wavelength light which accounts for 40 to 60 percent of one-day illumination time is given to the prawns first, and then the irradiation of the long-wavelength light is given to the prawns until the illumination time is finished. The method improves the molt synchronism of the indoor industrially-cultured prawns by adjusting the circadian rhythm change of the light color, reduces the probability that the prawns are cannibalized, and increases the yield of the indoor industrially-cultured prawns.
Description
Technical field
The present invention relates to a kind of method that improves indoor industrially-cultured prawn molt synchronism.
Background technology
Prawn casts off a skin and follows the whole life process of shrimps, compares with the crustacean of thick shell, and casting off a skin of prawn is more frequent.It is generally acknowledged that the prawn growth realizes the long growth of its staged body by casting off a skin, promptly increase fast at the Shi Tichang of casting off a skin, precursor is long almost to be increased seldom and casted off a skin to next time in the back of casting off a skin.In the prawn culturing production process, often can see the phenomenon that kills and devour, before new shell was finished sclerosis under this and the old shell of prawn were sloughed off, the health softness, energy is limited, and defence capability is low relevant.In batch production prawn culturing production management process, because the molt synchronism of prawn is lower, and the breeding density of prawn is higher, has increased the probability that prawn is killed and devour, thereby has influenced the output of batch production prawn culturing to a certain extent.
Summary of the invention
The purpose of this invention is to provide a kind of method that improves indoor industrially-cultured prawn molt synchronism, it can overcome the above-mentioned shortcoming of indoor industrially prawn culturing prior art.
A kind of method that improves indoor industrially-cultured prawn molt synchronism, it is photochromic to it is characterized in that in prawn culturing production daily rhythm sexually revises, and promptly photochromic variation is changed to long wavelength light by short-wavelength light; In certain periodicity of illumination, after illumination begins, give the short-wavelength light irradiation of prawn light application time of 40%～60% in one day illumination time earlier, give the irradiation of prawn long wavelength light subsequently, finish up to light application time.
The present invention improves the molt synchronism of indoor industrially-cultured prawn by regulating photochromic daily rhythm variation, reduces the probability that prawn is killed and devour, and improves the output of indoor industrially prawn culturing.
Description of drawings
Accompanying drawing is the molt synchronism figure of Environment of Litopenaeus vannamei Low under the different photochromic processing.A represents the prawn of molt rate every day≤10% o'clock number and the experimental session several ratio of always casting off a skin of casting off a skin in the accompanying drawing; B represents 10%～20% o'clock prawn of molt rate every day cast off a skin number and experimental session several ratio of always casting off a skin; C represents the prawn of molt rate every day 〉=20% o'clock number and the experimental session several ratio of always casting off a skin of casting off a skin.B is the blue light group, and BG and BY are respectively blue light to green glow and gold-tinted daily rhythm set of variations.
Embodiment
Embodiment
Learning the laboratory in 2008 at Chinese Marine University's breeding ecological experimentizes.Used Environment of Litopenaeus vannamei Low is purchased in the Jiangzhou, Qingdao and to be supported the shrimp field in the experiment, and this prawn body colour is normal, for health vivaciously individual.After prawn was transported back, (150 * 80 * 50cm) supported 7 days temporarily, made it adapt to laboratory condition to put into the foster temporarily groove of fiberglass.The water temperature of supporting is 24～26 ℃ temporarily, and salinity is 28～31ppt, and periodicity of illumination is 14L:10D, continuous charge, and per 2～3d changes water once, and every day is (7:00 regularly; 16:00) throw something and feed twice of hippocampus board artifical compound feed.
Experiment in same laboratory the inter-sync of three controllable light cells carry out.Select support temporarily the prawn that size is close in the groove (the wet body weight of every tail shrimp is 1.212 ± 0.010g) 50 tails, put into aquarium (60 * 50 * 45cm), be used for the experiment of each processed group.With constant blue light irradiation is control group (B), in the periodicity of illumination of 14L:10D, gives the irradiation of 7 hours blue light of prawn after turning on light earlier, gives the irradiation of prawn green light and sodium yellow subsequently before turning off the light again respectively; Promptly be respectively BG and BY processed group.By regulating the distance of the fluorescent tube and the water surface, be about 300lx with the intensity of illumination that guarantees each processed group aquarium bottom.In the experimentation, change water every day once, change the experimental water of 1/3～1/2 volume at every turn, continuous charge, used seawater is a sand filter seawater, and temperature is 24～26 ℃, and salinity is 28～31ppt.With the above-mentioned artifical compound feed prawn twice of throwing something and feeding, with residual bait and ight soil sucking-off, every day write down the cast off a skin number of times of prawn, Therapy lasted 45d behind the 2.5h that at every turn throws something and feeds in 6:00 and 16:00 every day.
This result of experiment (seeing accompanying drawing) shows, cast off a skin number and the experimental session of molt rate every day≤10% of control group Environment of Litopenaeus vannamei Low several ratio of always casting off a skin is 65.8%, and every day, cast off a skin number and experimental session several ratio of always casting off a skin of molt rate＞10% was 34.2%; BY and BG processed group prawn every day molt rate 10% cast off a skin number and experimental session several ratio of always casting off a skin be respectively 54.4% and 47.5%; And cast off a skin number and the experimental session of prawn molt rate every day＞10% o'clock several ratio of always casting off a skin is respectively 45.6% and 52.5%, has improved 33.3% and 53.5% respectively than control group.The comparatively dispersion of casting off a skin of control group prawn is described, and casting off a skin of photochromic daily rhythm change process group prawn is concentrated relatively, molt synchronism is improved.
By above-mentioned result of the test as can be seen, can reach the purpose that improves the prawn molt synchronism by regulating photochromic daily rhythm variation.
Prawn involved in the present invention comprises Crustin (Penaeus chinensis), Penaeus monodon (Penaeus monodon Fabricius), Environment of Litopenaeus vannamei Low (Litopenaeusvannamei).The effect of the above two experimental result and Environment of Litopenaeus vannamei Low is similar.
Claims (4)
1. method that improves indoor industrially-cultured prawn molt synchronism, it is photochromic to it is characterized in that in prawn culturing production daily rhythm sexually revises, and promptly photochromic variation is changed to long wavelength light by short-wavelength light; In certain periodicity of illumination, after illumination begins, give the short-wavelength light irradiation of prawn light application time of 40%～60% in one day illumination time earlier, give the irradiation of prawn long wavelength light subsequently, finish up to light application time.
2. the method for the indoor industrially-cultured prawn molt synchronism of raising as claimed in claim 1 is characterized in that described certain periodicity of illumination, and being has 9～15 hours to be light application time in 24 hours.
3. the method for the indoor industrially-cultured prawn molt synchronism of raising as claimed in claim 1 is characterized in that described short-wavelength light, and wave-length coverage is 410～500nm.
4. the method for the indoor industrially-cultured prawn molt synchronism of raising as claimed in claim 1 is characterized in that described long wavelength light, and wave-length coverage is 550～700nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100114729A CN101720708B (en) | 2010-01-13 | 2010-01-13 | Method for improving molt synchronism of indoor industrially-cultured prawns |
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| CN2010100114729A CN101720708B (en) | 2010-01-13 | 2010-01-13 | Method for improving molt synchronism of indoor industrially-cultured prawns |
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| CN101720708A true CN101720708A (en) | 2010-06-09 |
| CN101720708B CN101720708B (en) | 2012-02-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103004652A (en) * | 2012-10-12 | 2013-04-03 | 淮安正昌饲料有限公司 | Method for observing ecdysis period of crayfish |
| CN104737953A (en) * | 2015-03-27 | 2015-07-01 | 深圳市龙科源水产养殖有限公司 | Synchronous decortication method for lobsters |
| CN113100127A (en) * | 2021-04-28 | 2021-07-13 | 中国海洋大学 | Photochromic and photochromic intensive control method for industrial aquaculture of rainbow trout |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7000567B1 (en) * | 2004-08-30 | 2006-02-21 | Shyh-Min Tom Hsiao | Method for guiding aquatic crustaceans by utilizing their biological tendency responding to bright and dark contrast |
-
2010
- 2010-01-13 CN CN2010100114729A patent/CN101720708B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103004652A (en) * | 2012-10-12 | 2013-04-03 | 淮安正昌饲料有限公司 | Method for observing ecdysis period of crayfish |
| CN104737953A (en) * | 2015-03-27 | 2015-07-01 | 深圳市龙科源水产养殖有限公司 | Synchronous decortication method for lobsters |
| CN113100127A (en) * | 2021-04-28 | 2021-07-13 | 中国海洋大学 | Photochromic and photochromic intensive control method for industrial aquaculture of rainbow trout |
| CN113100127B (en) * | 2021-04-28 | 2022-03-22 | 中国海洋大学 | Photochromic and photochromic intensive control method for industrial aquaculture of rainbow trout |
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| CN101720708B (en) | 2012-02-29 |
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Granted publication date: 20120229 Termination date: 20130113 |