CN203194305U

CN203194305U - Incubation cage of sepiella maindroni zygotes

Info

Publication number: CN203194305U
Application number: CN2013200582357U
Authority: CN
Inventors: 王跃斌; 孙忠; 柴学军; 余方平; 胡则辉; 朱云海
Original assignee: Zhejiang Marine Fisheries Research Institute
Current assignee: Zhejiang Marine Fisheries Research Institute
Priority date: 2013-02-01
Filing date: 2013-02-01
Publication date: 2013-09-18
Anticipated expiration: 2023-02-01

Abstract

The utility model discloses an incubation cage of sepiella maindroni zygotes. The incubation cage comprises an incubation cage frame with foam floaters, a nylon net sheet defining a net box shape in an enclosed mode is installed on the incubation cage frame in a suspended mode, a plastic retracting rope is installed nearby the bottom of the nylon net, the inner side of the retracting rope is connected with a plastic disk, and small holes are uniformly distributed in the plastic disk. By the adoption of the simple structure, the incubation cage is convenient to manufacture, low in cost, strong in production operability, and capable of being easily popularized and used in sepiella maindroni artificial breeding production enterprises. Incubated larvae can be optimized in short time, and the larvae which are uniform in standard, strong in vigour, free of injury, and high in quality can be obtained. Compared with larvae incubated through other devices, the prevalence rate of the larvae incubated through the incubation cage is greatly reduced.

Description

Sepiella maindroni fertilized egg hatching cage

Technical field

The utility model relates to a kind of hatch fish roe device and method, relates in particular to the Sepiella maindroni fertilized egg hatching and selects excellent method and isolated plant.

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), coastal distributed more widely in China, once be that one of aquatic products are caught in four traditional sea of China, had very high economic worth.In recent years, Chinese scholar has progressively been carried out the Sepiella maindroni parent and has been fished for, tames and cultivate and the research work of artificial seed raising technology, and solved the difficult problem of industrial artificial seedling rearing substantially, but in artificial breeding is produced, still have the lower phenomenon of hatchability of fertile eggs, incubation rate is generally only about 10%.The factor that influences hatchability of fertile eggs has many, as the quality of fertilized egg, and the egg apparatus tool of fertilized egg, breeding conditions such as water temperature, water quality, salinity etc., and unsuitable hatching pattern can cause producing lower incubation rate, and can influence the quality of hatchling.At present, in the Sepiella maindroni artificial breeding is produced, the fertilized egg hatching mode was generally put into the parents culture pond with plastic ties, net sheet etc. as the egg apparatus tool before this before parent is laid eggs, after treating that fertilized egg behind the parent mate and oviposit invests on the egg apparatus tool, directly rope, the net sheet with attached ovum moves into nursery pond, be suspended in the water body, hatch by breeding conditions such as control water temperature, salinity, pH value, illumination.The shortcoming of this mode of operation is that the attached ovum of egg apparatus is too thick too much, the ovum granule density is excessive, pathogenic easily, and cause ovum grain anoxic easily, obstruction embryo breathes, the slow even perish of egg development in the middle of being enclosed in, this hatching pattern not only causes incubation rate seriously to reduce, and make impurity, dead ovum and the young inferior that hatches is directly sneaked into and cultivates in the pond, the influence success rate of growing seedlings.Also there is patent report (ZL201020596632.6) to adopt dried up hatching utensil hatching Sepiella maindroni fertilized egg in addition, but this mode just is fit to laboratory condition or uses in the breeding process on a small scale, is difficult to apply in the Sepiella maindroni yielding ability is bred.In view of the importance that high hatchability and the high-quality young produce for artificial breeding, need that design is a kind of to be fit to use aborning badly, the fertilized egg hatching rate can be improved, and the hatching apparatus that the young selects excellent effect can be played.

Summary of the invention

The purpose of this utility model is that providing a kind of at prior art is fit to use aborning, can improve the fertilized egg hatching rate, and can play the Sepiella maindroni fertilized egg hatching cage that the young selects excellent effect.

The utility model solves the problems of the technologies described above the technical scheme that adopts: Sepiella maindroni fertilized egg hatching cage, comprise the hatching cage framework with foam plastic float, and hang on this hatching cage framework and be provided with the nylon mesh sheet that surrounds the net cage shape, wherein: nylon mesh sheet is provided with the plastic shrink rope near the bottom; The retraction cord inboard is connected with plastic disc; Be evenly equipped with aperture on the plastic disc.Because that adopts is simple in structure, easily manufactured, cost is low, produces workablely, 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 the sterilization cage; Fertilized egg is distributed on the plastic disc, has solved that fertilized egg density is excessive, the easy anoxic of fertilized egg, hindered the problem that the embryo breathes, improve the sea grape incubation rate effectively; The bead burr edge of aperture can promote the rupture of membranes of squid larva, improves the hatching survival rate, can select excellently in the time faster to the young that hatches, and can obtain that specification is neat, energetic, not damaged, the high-quality young.Compare with the young that other devices are hatched, illness rate reduces by 30%.

The aperture of the aperture on the plastic disc is 1mm-20mm.

Because the utility model is provided with the plastic shrink rope near having adopted the nylon mesh sheet bottom; The retraction cord inboard is connected with plastic disc; Be evenly equipped with aperture on the plastic disc.Because that adopts is simple in structure, easily manufactured, cost is low, produces workablely, 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 the sterilization cage; Fertilized egg is distributed on the plastic disc, has solved that fertilized egg density is excessive, the easy anoxic of fertilized egg, hindered the problem that the embryo breathes, improve the sea grape incubation rate effectively; The bead burr edge of aperture can promote the rupture of membranes of squid larva, improve the 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, compare with other hatching m, utilize this hatching apparatus, incubation rate can improve 26.3～35.2%; Can in the time faster, select excellently to the young that hatches, can obtain that specification is neat, energetic, not damaged, the high-quality young.Compare with the young that other devices are hatched, illness rate reduces by 30%.

Description of drawings

Fig. 1 is the utility model embodiment device structural representation;

Fig. 2 is the enlarged diagram of the utility model hatching cage;

Fig. 3 is the enlarged diagram of the utility model plastic disc.

Embodiment

Describe in further detail below in conjunction with the utility model of attached embodiment.

The drawing reference numeral explanation: clean sea water 1, water intaking valve 2, cement are cultivated 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, Sepiella maindroni fertilized egg hatching cage, comprise the hatching cage framework 11 with foam plastic float 7, and suspension is provided with the nylon mesh sheet 12 that surrounds the net cage shape on this hatching cage framework 11, wherein: nylon mesh sheet is provided with plastic shrink rope 14 near 12 bottoms; Retraction cord 14 inboards are connected with plastic disc 13; Be evenly equipped with aperture 15 on the plastic disc 13.Because that adopts is simple in structure, easily manufactured, cost is low, produces workablely, 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 the sterilization cage; Fertilized egg is distributed on the plastic disc, has solved that fertilized egg density is excessive, the easy anoxic of fertilized egg, hindered the problem that the embryo breathes, improve the sea grape incubation rate effectively; The bead burr edge of aperture 15 can promote the rupture of membranes of squid larva, improves the hatching survival rate, can select excellently in the time faster to the young that hatches, and can obtain that specification is neat, energetic, not damaged, the high-quality young.Compare with the young that other devices are hatched, illness rate reduces by 30%.

The aperture of the aperture 15 on the plastic disc 13 is 1mm-20mm.

The Sepiella maindroni fertilized egg hatching is selected excellent method, comprise: directly will grow string and thick close fertilized egg 6 after the fertilized egg 6 behind the Sepiella maindroni parent mate and oviposit being invested on the egg apparatus tool such as rope and connect rope from the egg apparatus tool and cut, be cut into simple grain fertilized egg 6 or be cut into short and small ran, fertilized egg 6 quantity control on every ran directly is positioned on the plastic disc 13 of hatching in the cage 5 with simple grain fertilized egg 6 or the fertilized egg 6 of segmentation at 20～50.Fertilized egg 6 distributes comparatively uniformly, can reduce the dead ovum ratio that causes because of anoxic.Simultaneously, because the egg membrane surface contacts with aperture 15, current stir and cause friction, can promote young membrane, improve survival rate.

Every 1m in the hatching cage 5 residing water bodys ²～2m ²Place a gas exhausting stone 11 that is connected with air pump by tracheae.

Cement is cultivated pond 3 areas with 20m ²～30m ², the depth of water is advisable with 1.0m～1.5m, static line 8 is set, every 1m in the pond between the pool wall ²～2m ²Place a gas exhausting stone 11 that is connected with air pump by tracheae, to increase oxygen in the water body, cement is cultivated pond 3 and is advanced draining by water intaking valve 2 and outlet valve 9 controls, after treating to put into clean sea water 1 in cement cultivation 3 ponds, pond, several hatching cages 5 are put into the pond, utilizing hanging rope 4 will hatch cage 5 lies on the static line 8, hatching cage 5 is made hatching cage framework 12 by the PE plastic tube earlier, at the nylon mesh sheet 12 of hatching cage framework 12 configurations by the nylon rope braiding, the net of nylon mesh sheet 12 directly is 5mm-20mm, preferred 5mm, in hatching outer, cage 5 upper end a plurality of foam plastic floats 7 are set, make hatching cage 5 cultivate pond 3 SEA LEVEL VARIATIONS DURING and lifting with cement, distance hatching 100mm place, cage 5 bottom, utilize nylon retraction cord 14 to fix a plastic disc 13 at nylon mesh sheet 12, the diameter of plastic disc 13 is 45mm, some apertures are arranged on the plastic disc 13, the aperture is 1mm-20mm, preferred 2mm, ovum footpath less than Sepiella maindroni fertilized egg 6, after treating that fertilized egg 6 behind the Sepiella maindroni parent mate and oviposit invests on the egg apparatus tools such as rope, directly will grow string and thick close fertilized egg 6 connects rope from the egg apparatus tool and cuts, be cut into simple grain fertilized egg 6 or be cut into some short and small rans, fertilized egg 6 quantity control on every ran is at 20～50, directly be positioned on the plastic disc 13 of hatching in the cage 5 with simple grain fertilized egg 6 or the fertilized egg 6 of segmentation, according to the requirement of Sepiella maindroni fertilized egg 6 hatchings, the control water temperature, salinity, dissolved oxygen, pH and intensity of illumination.After treating that the Sepiella maindroni young hatches, adopt soft write by hand net the young to be selected excellent, with weak vigor difference and the young of ink-jet or damaged drag for from hatching cage 5, phototaxis is good, that body colour is dark, the energetic healthy and strong young is directly cast aside cement and cultivates cultivation in the pond 3, after fertilized egg 6 hatchings finish, to hatch cage 5 and shift out cement cultivation pond 3, standby behind the cleaning and sterilizing.

Although described the utility model in conjunction with preferred embodiment; so it is not in order to limit the utility model; any those skilled in the art; under the situation that does not break away from spirit and scope of the present utility model; can implement displacement and the modification of various changes, coordinate to the theme of listing here, therefore protection domain of the present utility model is as the criterion when looking the claim restricted portion that proposes.

Claims

1. Sepiella maindroni fertilized egg hatching cage, comprise the have foam plastic float hatching cage framework (11) of (7), and this hatching cage framework (11) is gone up to hang and is provided with the nylon mesh sheet (12) that surrounds the net cage shape, it is characterized in that: described nylon mesh sheet (12) is provided with plastic shrink rope (14) near the bottom; Described retraction cord (14) inboard is connected with plastic disc (13); Be evenly equipped with aperture (15) on the described plastic disc (13).

2. Sepiella maindroni fertilized egg hatching cage according to claim 1, it is characterized in that: the aperture of the aperture (15) on the described plastic disc (13) is 1mm-20mm.