CN103070122B - Method and special device for hatching and preferring sepiella maindroni oosperms - Google Patents
Method and special device for hatching and preferring sepiella maindroni oosperms Download PDFInfo
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- CN103070122B CN103070122B CN201310040320.5A CN201310040320A CN103070122B CN 103070122 B CN103070122 B CN 103070122B CN 201310040320 A CN201310040320 A CN 201310040320A CN 103070122 B CN103070122 B CN 103070122B
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- hatching
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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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Abstract
The invention discloses a special device for hatching and preferring sepiella maindroni oosperms. The device comprises a hatching cage framework with a foaming floater, wherein a nylon mesh sheet which encloses to form a mesh box shape is hung on the hatching cage framework; a plastic retracting rope is arranged close to the bottom of the nylon mesh sheet; a round plastic disc is connected with the inner side of the retracting rope; and small holes are uniformly distributed in the round plastic disc. The special device is simple in structure, convenient to manufacture, low in cost and is strong in production operability, and is easily popularized and applied in an artificial seedling production unit of sepiella maindroni. Hatched young bodies can be preferred within a relatively short time, and the young bodies with regular specification, high activity, no injury and high quality can be obtained. Compared with the young bodies hatched by the other devices, the young bodies hatched by the special device have the advantage that the sickness rate is reduced by 30 percent.
Description
Technical field
The present invention relates to a kind of roe hatching device and method, particularly relate to hatching selection method and the special purpose device of Sepiella maindroni fertilized egg.
Background technology
Sepiella maindroni (Sepiella maindroni de Rochebrune) is commonly called as inkfish, order fish, be subordinate to Mollusca (Mollusca), Cephalopoda (Cephalopoda), Decapoda (Decapoda), Sepiidae (Sepiidae), sepiella maindroni de Rochebrune genus (Sepiella), distributed more widely at China coast, one of aquatic products are caught at traditional four sea by Zeng Shi China, have very high economic worth.In recent years, Chinese scholar has progressively carried out the research work that Sepiella maindroni parent is fished for, tamed cultivation and artificial seed's raising technology, and substantially solve a difficult problem for industrial artificial seedling rearing, but in artificial breeding is produced, still there is the phenomenon that hatchability of fertile eggs is lower, incubation rate is generally only about 10%.Affect the many because have of hatchability of fertile eggs, as the quality of fertilized egg, the egg apparatus tool of fertilized egg, the breeding conditions etc. such as water temperature, water quality, salinity, and unsuitable hatching pattern can cause producing lower incubation rate, and the quality of hatchling can be affected.At present, in Sepiella maindroni artificial breeding is produced, plastic ties, mesh sheet etc. were generally put into parents culture pond as egg apparatus tool by the hatching pattern of fertilized egg before this before parent is laid eggs, after fertilized egg after parent mate and oviposit invests on egg apparatus tool, directly the rope of attached ovum, mesh sheet are moved into nursery pond, being suspended in water body, hatching by controlling the breeding conditions such as water Inversion phenomenon, pH value, illumination.The shortcoming of this mode of operation is that the attached ovum of egg apparatus is too many too thick, ovum granule density is excessive, easily cause a disease, and easily cause ovum grain anoxic, obstruction embryo breathes, be enclosed in the middle slow even perish of egg development, this hatching pattern, not only causes incubation rate seriously to reduce, and impurity, dead ovum and the young inferior that hatches directly are mixed into cultivate in pond, affect nursery success rate.Another also have patent report (ZL201020596632.6) to adopt dried up hatching utensil to hatch Sepiella maindroni fertilized egg, but this mode is just applicable to applying in laboratory condition or small-scale breeding process, is difficult to apply in Sepiella maindroni productive breed.In view of the importance that high hatchability and the high-quality young produce for artificial breeding, need design a kind of being applicable to badly and apply aborning, the incubation rate of fertilized egg can be improved, and the hatching apparatus that the young selects excellent effect can be played.
Summary of the invention
The object of the invention is to provide a kind of being applicable to apply aborning for prior art, the incubation rate of fertilized egg can be improved, and hatching selection method and special purpose device that the young selects the Sepiella maindroni fertilized egg of excellent effect can be played.
The present invention solves the problems of the technologies described above adopted technical scheme: excellent special purpose device is selected in the hatching of Sepiella maindroni fertilized egg, comprise the hatching cage framework with foam plastic float, and this hatching cage framework hangs and is provided with the nylon mesh sheet surrounding net cage shape, wherein: near bottom nylon mesh sheet, be provided with plastic shrink rope; Plastic disc is connected with inside retraction cord; Plastic disc is evenly equipped with aperture.Because the structure adopted is simple, easily manufactured, cost is low, produces workable, is easy to promote the use of at Sepiella maindroni artificial breeding production unit; Be easy to clean the fertilized egg in hatching cage and sterilization cage; Fertilized egg can be made to be distributed on plastic disc, to solve that triploidy rate is excessive, the easy anoxic of fertilized egg, the problem that hinders embryo to breathe, effectively improve sea grape incubation rate; The bead burr edge of aperture can promote the rupture of membranes of squid larva, improve hatching survival rate, utilize this hatching apparatus, incubation rate can reach 25.0% ~ 33.8%, far above 12.1 ~ 18.5% of other hatching m, compared with other hatching m, utilize this hatching apparatus, incubation rate can improve 26.3 ~ 35.2%; Can select excellent to the young hatched within the time faster, can obtain that specification is neat, energetic, not damaged, the high-quality young.Compared with the young hatched with other devices, illness rate reduces by 30%.
The aperture of the aperture on plastic disc is 1mm-20mm.
The hatching selection method of Sepiella maindroni fertilized egg, it comprises: direct after the fertilized egg after Sepiella maindroni parent mate and oviposit being invested on the egg apparatus tools such as rope will long string and thick close fertilized egg connects rope from egg apparatus tool cuts, be cut into simple grain fertilized egg or be cut into short and small ran, fertilized egg quantity on every ran controls at 20 ~ 50, is directly positioned on the plastic disc in hatching cage by simple grain fertilized egg or the fertilized egg of segmentation.Comparatively uniform fertilized egg distribution, can reduce the dead ovum ratio because anoxic causes.Meanwhile, because egg membrane surface contacts with aperture, current stir and cause friction, can promote young membrane, improve survival rate.
Every 1m in the water body of hatching residing for cage
2~ 2m
2place a gas exhausting stone be connected with air pump by tracheae.
Plastic shrink rope is provided with owing to present invention employs near bottom nylon mesh sheet; Plastic disc is connected with inside retraction cord; Plastic disc is evenly equipped with aperture.Because the structure adopted is simple, easily manufactured, cost is low, produces workable, is easy to promote the use of at Sepiella maindroni artificial breeding production unit; Be easy to clean the fertilized egg in hatching cage and sterilization cage; Fertilized egg can be made to be distributed on plastic disc, to solve that triploidy rate is excessive, the easy anoxic of fertilized egg, the problem that hinders embryo to breathe, effectively improve sea grape incubation rate; The bead burr edge of aperture can promote the rupture of membranes of squid larva, improve hatching survival rate, utilize this hatching apparatus, incubation rate can reach 25.0% ~ 33.8%, far above 12.1 ~ 18.5% of other hatching m, compared with other hatching m, utilize this hatching apparatus, incubation rate can improve 26.3 ~ 35.2%; Can select excellent to the young hatched within the time faster, can obtain that specification is neat, energetic, not damaged, the high-quality young.Compared with the young hatched with other devices, illness rate reduces by 30%.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention apparatus structure schematic diagram;
Fig. 2 is the enlarged diagram that cage is hatched in the present invention;
Fig. 3 is the enlarged diagram of plastic disc of the present invention.
Embodiment
Below in conjunction with attached embodiment, the present invention is described in further detail.
Drawing reference numeral illustrates: clean sea water 1, water intaking valve 2, cement cultivate pond 3, hanging rope 4, hatching cage 5, fertilized egg 6, foam plastic float 7, static line 8, outlet valve 9, gas exhausting stone 10, hatching cage framework 11, nylon mesh sheet 12, plastic disc 13, plastic shrink rope 14, aperture 15.
Embodiment: referring to figs. 1 through Fig. 3, excellent special purpose device is selected in the hatching of Sepiella maindroni fertilized egg, comprise the hatching cage framework 11 with foam plastic float 7, and this hatching cage framework 11 hangs and is provided with the nylon mesh sheet 12 surrounding net cage shape, wherein: near bottom nylon mesh sheet 12, be provided with plastic shrink rope 14; Plastic disc 13 is connected with inside retraction cord 14; Plastic disc 13 is evenly equipped with aperture 15.Because the structure adopted is simple, easily manufactured, cost is low, produces workable, is easy to promote the use of at Sepiella maindroni artificial breeding production unit; Be easy to clean the fertilized egg in hatching cage and sterilization cage; Fertilized egg can be made to be distributed on plastic disc, to solve that triploidy rate is excessive, the easy anoxic of fertilized egg, the problem that hinders embryo to breathe, effectively improve sea grape incubation rate; The bead burr edge of aperture 15 can promote the rupture of membranes of squid larva, improve hatching survival rate, utilize this hatching apparatus, incubation rate can reach 25.0% ~ 33.8%, far above 12.1 ~ 18.5% of other hatching m, compared with other hatching m, utilize this hatching apparatus, incubation rate can improve 26.3 ~ 35.2%; Can select excellent to the young hatched within the time faster, can obtain that specification is neat, energetic, not damaged, the high-quality young.Compared with the young hatched with other devices, illness rate reduces by 30%.
The aperture of the aperture 15 on plastic disc 13 is 1mm-20mm.
The hatching selection method of Sepiella maindroni fertilized egg, it comprises: direct after the fertilized egg 6 after Sepiella maindroni parent mate and oviposit being invested on the egg apparatus tools such as rope will long string and thick close fertilized egg 6 connects rope from egg apparatus tool cuts, be cut into simple grain fertilized egg 6 or be cut into short and small ran, fertilized egg 6 quantity on every ran controls at 20 ~ 50, is directly positioned on the plastic disc 13 in hatching cage 5 by simple grain fertilized egg 6 or the fertilized egg 6 of segmentation.Comparatively uniform fertilized egg 6 distributes, and can reduce the dead ovum ratio because anoxic causes.Meanwhile, because egg membrane surface contacts with aperture 15, current stir and cause friction, can promote young membrane, improve survival rate.
Every 1m in the water body of hatching residing for cage 5
2~ 2m
2place a gas exhausting stone 11 be connected with air pump by tracheae.
Cement cultivates pond 3 area with 20m
2~ 30m
2, the depth of water is advisable with 1.0m ~ 1.5m, arranges static line 8, every 1m in pond between pool wall
2~ 2m
2place a gas exhausting stone 11 be connected with air pump by tracheae, to increase oxygen in water body, cement is cultivated pond 3 and is controlled into draining by water intaking valve 2 and outlet valve 9, after putting into clean sea water 1 in cement cultivation pond, pond 3, several hatching cages 5 are put into pond, hanging rope 4 is utilized to lie on static line 8 by hatching cage 5, hatching cage 5 first makes hatching cage framework 12 by PE plastic tube, hatching cage framework 12 configures the nylon mesh sheet 12 woven by nylon rope, the net footpath of nylon mesh sheet 12 is 5mm-20mm, preferred 5mm, in hatching outer, cage 5 upper end, multiple foam plastic float 7 is set, hatching cage 5 is made to cultivate the change of pond 3 middle water level with cement and be elevated, 100mm place bottom distance hatching cage 5, utilize nylon retraction cord 14 on nylon mesh sheet 12, fix a plastic disc 13, the diameter of plastic disc 13 is 45mm, plastic disc 13 there are some apertures, aperture is 1mm-20mm, preferred 2mm, be less than the ovum footpath of Sepiella maindroni fertilized egg 6, after fertilized egg 6 after Sepiella maindroni parent mate and oviposit invests on the egg apparatus tools such as rope, directly will long string and thick close fertilized egg 6 connects rope from egg apparatus tool cuts, be cut into simple grain fertilized egg 6 or be cut into some short and small rans, fertilized egg 6 quantity on every ran controls at 20 ~ 50, by simple grain fertilized egg 6 or the fertilized egg 6 of segmentation be directly positioned over hatching cage 5 in plastic disc 13 on, according to the requirement that Sepiella maindroni fertilized egg 6 is hatched, control water temperature, salinity, dissolved oxygen, pH and intensity of illumination.After the Sepiella maindroni young hatches, soft fishing net is adopted to select the young excellent, by weak vigor, poor and ink-jet or damaged the young is dragged for from hatching cage 5, dark, the energetic healthy and strong young of phototaxis is good, body colour is directly skimmed to cultivate in pond 3 into cement and cultivates, after fertilized egg 6 hatching terminates, hatching cage 5 is shifted out cement and cultivate pond 3, for subsequent use after cleaning and sterilizing.
Although describe the present invention in conjunction with preferred embodiment; so itself and be not used to limit the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; can implement various change, the displacement of coordinate and amendment here to the theme listed, therefore protection scope of the present invention be as the criterion when the scope limited depending on proposed claim.
Claims (2)
1. excellent special purpose device is selected in the hatching of Sepiella maindroni fertilized egg, comprise the hatching cage framework (11) with foam plastic float (7), and upper suspension of this hatching cage framework (11) is provided with the nylon mesh sheet (12) surrounding net cage shape, it is characterized in that: be provided with plastic shrink rope (14) near described nylon mesh sheet (12) bottom; Described retraction cord (14) inner side is connected with plastic disc (13); Described plastic disc (13) is evenly equipped with aperture (15); The aperture of the aperture (15) on described plastic disc (13) is 1mm-20mm; Described aperture (15) has burr edge.
2. adopt the hatching of Sepiella maindroni fertilized egg as claimed in claim 1 to select the hatching selection method of the Sepiella maindroni fertilized egg of excellent special purpose device, it is characterized in that: direct after the fertilized egg (6) after Sepiella maindroni parent mate and oviposit being invested on rope egg apparatus tool will long string and thick close fertilized egg (6) connects rope from egg apparatus tool cuts, be cut into simple grain fertilized egg (6) or be cut into short and small ran, fertilized egg (6) quantity on every ran controls at 20 ~ 50, by simple grain fertilized egg (6) or the fertilized egg of segmentation (6) is directly positioned on the plastic disc (13) in hatching cage (5), every 1m in the described water body residing for hatching cage (5)
2~ 2m
2place a gas exhausting stone be connected with air pump by tracheae (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310040320.5A CN103070122B (en) | 2013-02-01 | 2013-02-01 | Method and special device for hatching and preferring sepiella maindroni oosperms |
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|---|---|---|---|
| CN201310040320.5A CN103070122B (en) | 2013-02-01 | 2013-02-01 | Method and special device for hatching and preferring sepiella maindroni oosperms |
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| CN103070122A CN103070122A (en) | 2013-05-01 |
| CN103070122B true CN103070122B (en) | 2015-07-15 |
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Families Citing this family (12)
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| CN103238545B (en) * | 2013-05-23 | 2014-06-18 | 中国水产科学研究院黄海水产研究所 | Device and method for hatching fertilized eggs of sepia esculenta |
| CN106900600B (en) * | 2016-12-30 | 2020-11-13 | 浙江海洋大学 | Enhanced cultivation method for improving fertility of sepiella maindroni |
| CN107306862A (en) * | 2017-08-09 | 2017-11-03 | 湖北省水产科学研究所 | Hatching apparatus and hatching method |
| CN107466935A (en) * | 2017-09-08 | 2017-12-15 | 岭南师范学院 | New indoor culturing pool is used in a kind of cuttlefish cultivation |
| CN107593540A (en) * | 2017-09-28 | 2018-01-19 | 济南三峰益农农业科技有限公司 | A kind of air hangs egg hatching device |
| CN107787886B (en) * | 2017-10-12 | 2019-09-13 | 浙江省海洋水产研究所 | Tamper-proof type cuttlefish egg hatching release device |
| CN107646749B (en) * | 2017-10-12 | 2019-09-13 | 浙江省海洋水产研究所 | Cuttlefish enhancement releasing device |
| CN109496928A (en) * | 2018-11-27 | 2019-03-22 | 浙江海洋大学 | A kind of full-automatic hatching larvae device and method suitable for bottom dwelling property cuttlefish |
| CN109984061B (en) * | 2019-04-01 | 2021-08-20 | 中国海洋大学 | Artificial incubation method for octopus fertilized eggs |
| CN111296325B (en) * | 2019-12-26 | 2021-08-20 | 浙江省海洋水产研究所 | Bottom sinking type cuttlefish egg attaching device |
| CN111296326B (en) * | 2019-12-26 | 2021-08-20 | 浙江省海洋水产研究所 | Bionic egg attaching device for attaching cuttlefish eggs |
| CN112369358B (en) * | 2020-11-18 | 2022-03-15 | 浙江省海洋水产研究所 | Overwintering culture device for Nibea japonica |
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