CN103238545A - Device and method for hatching fertilized eggs of sepia esculenta - Google Patents
Device and method for hatching fertilized eggs of sepia esculenta Download PDFInfo
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- CN103238545A CN103238545A CN201310194308XA CN201310194308A CN103238545A CN 103238545 A CN103238545 A CN 103238545A CN 201310194308X A CN201310194308X A CN 201310194308XA CN 201310194308 A CN201310194308 A CN 201310194308A CN 103238545 A CN103238545 A CN 103238545A
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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
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
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Abstract
A device for hatching fertilized eggs of sepia esculenta comprises a nested hatching basket and a support rod. The nested hatching basket is provided with a bottom, the bottom is similar to a honeycomb and is provided with a central hole, the bottom similar to the honeycomb comprises a series of barrels, a circular hole is arranged at the bottom of each barrel, and the diameter of each circular hole is smaller than that of the corresponding barrel. By the aid of the device, fertilized eggs of the sepia esculenta are independently hatched in the nested hatching basket. As the diameter of each fertilized egg is larger than that of each barrel, the fertilized eggs cannot be clamped into the barrels, and later expansion of the fertilized eggs cannot be affected. Besides, by the aid of the circular holes at the barrel-shaped bottom, circulation and exchange of water can be ensured when the fertilized eggs are hatched, oxygen deficiency caused by squeezing of the fertilized eggs can be avoided, and saprolegniasis is effectively avoided. Hatched young sepia esculenta can immediately swim out by themselves from the side wall of the hatching basket, all egg shells fall into the barrels at the bottom of the hatching basket, the egg shells and fries are easily separated, the water in a nursery pond is kept clean, stimulation damage is effectively decreased in the fry cultivation process, and the hatching rate of the fertilized eggs is finally increased.
Description
Technical field
The invention belongs to aquaculture field, relate to a kind of golden cuttlefish incubating oosperm device and hatching m thereof particularly.
Background technology
Golden cuttlefish is breed new varieties newly developed, has characteristics such as life cycle is lacked (1 year), fast growth, individuality is big, nutritious, availability is high, the migration rule is obvious, and aquaculture has a extensive future.At present, the breed scale of golden cuttlefish and scope just progressively enlarge.
The ovum of the firm output of golden cuttlefish, counterpoise 0.99g/ grain (n=100), major axis are 11～24mm, minor axis is 8～15mm, outward by tertiary egg envelope.Tertiary egg envelope experiences the change procedure of a softness-formalize-dwindle-expand in embryo development procedure.Fertilized egg is hatched under 20～25 ℃ of water temperatures, through 25～30 days young successively demoulding hatch.The fertilized egg egg membrane becomes very thin before the membrane, and is sparkling and crystal-clear bright, when volume is firm output about 2 times.After young cuttlefish hatches, when chorion is punctured into firm output 1/4～1/3 of volume.
Golden cuttlefish has the ovum of extension characteristic, generally places article such as sea cucumber basket frame, net sheet or sieve basin as laying eggs base in the parents culture pond, is used for hanging ovum and adheres to.Before the present invention makes, golden cuttlefish fertilized egg hatching mode mainly is that adherance directly is transferred to the hatchery hatching from the parents culture pond, because golden cuttlefish brooding time long (20～25 ℃ need 25～30 days), the as easy as rolling off a log large tracts of land that causes in zone is rotted in the ovum quantity set to the hatching later stage adherance, and then has a strong impact on incubation rate.In addition, because in the seed hatching later stage, egg membrane became very thin after fertilized egg was expanded, mobile or as easy as rolling off a logly when shifting adherance cause seed to hatch in advance because of stimulation, and then influence seed hatching quality and early stage survival rate, therefore after treating that generally seed all hatches on producing, the adherance that hangs with chorion is shifted out, the seed rearing pond is changed in the incubating oosperm pond into.Yet, owing to after seed hatches successively, there are a large amount of chorions to come off from adherance, the chorion that comes off and golden cuttlefish seed are mixed in together, as easy as rolling off a log putrid and deteriorated and breed bacteria, in addition because the battalion's life of dwelling at the end of golden cuttlefish seed stage, most of time transfixions cause seed ink-jet damage easily, and then influence the early stage survival rate of seed rearing when removing chorion.Do not see at present the report of the special-purpose hatching apparatus of golden cuttlefish fertilized egg and hatching m thereof.
Summary of the invention
The technical problem to be solved in the present invention is according to golden cuttlefish development of fertilized ova characteristic, and a kind of special-purpose hatching apparatus and hatching m thereof are provided, and hatches back seed and extremely difficult this technical barrier that separates of chorion to improve golden cuttlefish seed incubation rate and to solve seed.
The present invention finishes by following operating technology:
A kind of golden cuttlefish incubating oosperm device comprises nido hatching basket and support bar; Nido hatching basket has similar honeycomb bottom and the bottom has a medium pore, and similar honeycomb bottom is made up of the drum that a series of bottoms have a circular hole, and the diameter of circular hole is less than the drum diameter, and nido hatching basket sidewall is the sieve aperture shape; Support bar is made up of 1 pedestal and an above sleeving connecting rod, pedestal comprises that one has the base of constant weight and vertically is connected connecting rod on the base, sleeving connecting rod divides two sections, one section is thin segment, another section is thick section, be rectangular transition between thin segment and the thick section, the diameter of connecting rod is identical with the thin segment diameter, in thick section of connecting rod insertion sleeving connecting rod, the medium pore diameter of nido hatching basket is less than thick section diameter of sleeving connecting rod, and greater than the thin segment diameter of sleeving connecting rod, thin segment by sleeving connecting rod passes the medium pore of nido hatching basket, thereby nido hatching basket is fixed on the thin segment and thick section junction of sleeving connecting rod, so inserts thick section of another sleeving connecting rod by the thin segment of a sleeving connecting rod, medium pore by nido hatching basket is inserted in the connecting rod thin segment then, forms the golden cuttlefish incubating oosperm device of multilayer nido hatching basket one.
Further, the high 10～12cm of described nido hatching basket, base diameter 36～40cm; Sidewall sieve diameter 7～8mm is convenient to just to incubate the young and is swum out of from sidewall, the drum diameter 6～8mm of similar honeycomb bottom, and the diameter 2～3mm of drum bottom circular aperture is in case chorion exposes.
The present invention also provides a kind of method of utilizing the foregoing invention device to carry out the golden cuttlefish incubating oosperm, pedestal is put into the hatchery, put a sleeving connecting rod, penetrate a nido hatching basket on the sleeving connecting rod, with the hatchery depth of water, cover connects sleeving connecting rod and the nido hatching basket of requirement more according to actual needs; Fertilized egg is taken from adherance, put into the nido hatching basket hatching of this hatching apparatus, place a fertilized egg on the drum of a similar honeycomb bottom, behind incubation of membrane, just incubating the young swims out of from nido hatching basket sidewall, chorion is fallen in the drum of similar honeycomb bottom, and incubating oosperm shifts out apparatus of the present invention after finishing.
The beneficial effect that the present invention is compared with the prior art:
1) fertilized egg is taken from adherance, putting into this hatching apparatus hatches, after young cuttlefish hatches, can swim out of from hatching basket sidewall voluntarily at once, chorion all falls in the drum of hatching basket bottom, is easy to chorion and seed are separated, thus the cleaning of water quality in the maintenance nursery pond, reduce the stimulation damage in the seed rearing process effectively, significantly improved the seed rearing survival rate.
2) apparatus of the present invention make the hatching separately in nido hatching basket of golden cuttlefish fertilized egg, because the fertilized egg diameter is greater than the drum diameter, therefore fertilized egg can not snap in drum inside, do not influence late expansion, the drum type bottom has circular hole simultaneously, and the circulation of water quality exchange in the time of can guaranteeing incubating oosperm can be avoided the anoxic that causes because of the fertilized egg extruding, and then avoid the generation of saprolegniasis effectively, finally improve the fertilized egg hatching rate.
3) hatching apparatus is divided into multilayer, can increase and decrease with the hatchery depth of water according to actual needs.
Description of drawings
Fig. 1 nido hatching basket front view: 4, nido hatching basket sidewall;
The similar honeycomb of Fig. 2 bottom: 1, medium pore, 2, circular hole;
Fig. 3 a, drum front view: 2, circular hole; 3, drum; B, golden cuttlefish fertilized egg are placed on the state on the drum: 10, fertilized egg;
Fig. 4 nido hatching basket upward view: 2, circular hole;
Fig. 5 a, sleeving connecting rod; B, pedestal: 5, base, 6, connecting rod; The assembled state of c pedestal and sleeving connecting rod: 7 thin segments, 8 thick sections, 9 junctions.
Embodiment
Be described in detail technical method of the present invention below by embodiment:
A kind of golden cuttlefish incubating oosperm device comprises nido hatching basket (as shown in Figure 1) and support bar; Nido hatching basket has similar honeycomb bottom (as shown in Figure 2), and the bottom has a medium pore 1, similar honeycomb bottom (as shown in Figure 2) is made up of the drum 3 that a series of bottoms have a circular hole 2, shown in Fig. 3 a, the diameter of circular hole 2 is less than drum 3 diameters, and nido hatching basket sidewall 4 is sieve aperture shapes; The upward view of nido hatching basket as shown in Figure 4; Support bar is made up of 1 pedestal (shown in Fig. 5 b) and an above sleeving connecting rod (shown in Fig. 5 a), pedestal comprises that one has the base 5 of constant weight and vertically is connected connecting rod 6 on the base, sleeving connecting rod divides two sections, one section is thin segment 7, another section is thick section 8, be rectangular transition (shown in Fig. 5 a) between thin segment and the thick section, the diameter of connecting rod 6 is identical with thin segment 7 diameters, in thick section 8 of connecting rod 6 insertion sleeving connecting rods, medium pore 1 diameter of nido hatching basket is less than thick section 8 diameters of sleeving connecting rod, and greater than thin segment 7 diameters of sleeving connecting rod, the thin segment of sleeving connecting rod passes the medium pore of nido hatching basket, thereby nido hatching basket is fixed on the thin segment and thick section junction 9 of sleeving connecting rod, thick section of inserting another sleeving connecting rod by the thin segment of a sleeving connecting rod like this, the medium pore of nido hatching basket is inserted in the connecting rod thin segment then, forms the golden cuttlefish incubating oosperm device of multilayer nido hatching basket one.
The high 10cm of described nido hatching basket also can be the arbitrary specification of 10-12cm, and base diameter 36cm also can be the arbitrary specification of 36-40cm; Sidewall sieve diameter 7mm also can be the arbitrary specification of 7-8cm, is convenient to just to incubate the young and swims out of from sidewall; The drum diameter 6mm of similar honeycomb bottom also can be the arbitrary specification of 6-8cm, and the diameter 2mm of drum bottom circular aperture also can be the arbitrary specification of 2-3cm, in case chorion exposes.
The present invention also provides a kind of method of utilizing the foregoing invention device to carry out the golden cuttlefish incubating oosperm, pedestal is put into the hatchery, put a sleeving connecting rod, shown in Fig. 5 c, penetrate a nido hatching basket on the sleeving connecting rod, with the hatchery depth of water, cover connects sleeving connecting rod and the nido hatching basket of requirement more according to actual needs; Fertilized egg is taken from adherance, put into the nido hatching basket hatching of this hatching apparatus, place a fertilized egg 10 on the drum of a similar honeycomb bottom, shown in Fig. 3 b, behind incubation of membrane, just to incubate the young and swim out of from nido hatching basket sidewall, chorion is fallen in the drum of similar honeycomb bottom, incubating oosperm shifts out apparatus of the present invention after finishing.
In June, 2012, we have carried out the effect experiment of the different hatching ms of golden cuttlefish fertilized egg in Golden Beach, Qingdao aquatic products development corporation, Ltd..Incubation condition is: 20～25 ℃ of water temperatures, and pH7.8～8.2, salinity 28～35, dissolved oxygen amount is uninterruptedly inflated continuously greater than 6mg/L, and a day rate of water exchange is 200%～400%, intensity of illumination 500Lx～600Lx.
1) first method adopts apparatus of the present invention and method, and pedestal is put into the hatchery, puts a sleeving connecting rod, penetrates a nido hatching basket on the sleeving connecting rod, and according to actual needs with the hatchery depth of water, cover connects 6 sleeving connecting rods and nido hatching basket again; Fertilized egg is taken from adherance, put into the hatching of nido hatching basket, hatching depth of water 90cm, each hatching apparatus have 6 layers of hatching basket, about 1200 fertilized egg altogether.The result shows that fertilized egg is not caused extruding in hatching process, and the water body exchange is good, and the water mold disease does not take place, and incubation rate is 99%.After young cuttlefish hatches, can swim out of from hatching basket sidewall voluntarily at once, chorion all falls in the drum of hatching basket bottom, thereby has reduced the stimulation damage in the seed rearing process effectively, and the seed rearing survival rate is promoted to 60～70% by 20～30%.
2) second method, after adherance shifted out from the parents culture pond, directly put into the hatchery hatching, the result shows, the place in the adherance ovum quantity set, and the pathogenetic ratio of water mold is up to 72%, incubation rate only is 65%, the chorion ratio of coming off accounts for more than 30%, the golden cuttlefish young is caused and stress ink-jet damage when causing bacteria breed and removing chorion owing to the chorion corruption in addition, and the seed rearing survival rate only is 20～30%.
3) the third method is taken fertilized egg from adherance, puts into common plastics sieve basin and hatches.The result shows, hatchability of fertile eggs is 85%, may not be independent arrangement with fertilized egg, the as easy as rolling off a log extruding anoxic that causes be relevant, in addition because sieve basin aperture is less, young cuttlefish hatches and is difficult to change over to voluntarily the seed rearing pond, because the seed membrane time is inconsistent, causes the young that early hatches to feed into bait, thereby have influence on normal initial feeding, if pull out with dab net, then as easy as rolling off a logly cause the ink-jet damage and influence survival rate.Adopt this method, the seed rearing survival rate only is 30～40%.When adopting this method hatching in addition, because the sieve basin is individual layer, hatching fertilized egg limited amount needs a plurality of hatcheries when carrying out the scale hatching in the nursery pond, thereby causes cost to increase and water resource waste.
Claims (3)
1. a golden cuttlefish incubating oosperm device is characterized in that it comprises nido hatching basket and support bar; Nido hatching basket has similar honeycomb bottom and the bottom has a medium pore (1), similar honeycomb bottom is made up of the drum (3) that a series of bottoms have a circular hole (2), the diameter of circular hole (2) is less than drum (3) diameter, and nido hatching basket sidewall (4) is the sieve aperture shape; Support bar is made up of 1 pedestal and an above sleeving connecting rod, pedestal comprises that one has the base (5) of constant weight and vertically is connected connecting rod (6) on the base, sleeving connecting rod divides two sections, one section is thin segment (7), another section is thick section (8), be rectangular transition between thin segment and the thick section, the diameter of connecting rod is identical with the thin segment diameter, connecting rod inserts in thick section (8) of sleeving connecting rod, medium pore (1) diameter of nido hatching basket is less than thick section (8) diameter of sleeving connecting rod, and greater than thin segment (7) diameter of sleeving connecting rod, pass the medium pore of nido hatching basket by the thin segment of sleeving connecting rod, thereby nido hatching basket is fixed on the thin segment and thick section junction (9) of sleeving connecting rod, thick section (8) of inserting another sleeving connecting rod by the thin segment (7) of a sleeving connecting rod like this, medium pore (1) by nido hatching basket is inserted in the connecting rod thin segment then, forms the golden cuttlefish incubating oosperm device of multilayer nido hatching basket one.
2. a kind of golden cuttlefish incubating oosperm device according to claim 1 is characterized in that the high 10～12cm of described nido hatching basket, base diameter 36～40cm; Sidewall sieve diameter 7～8mm is convenient to just to incubate the young and is swum out of from sidewall, the drum diameter 6～8mm of similar honeycomb bottom, and the diameter 2～3mm of drum bottom circular aperture is in case chorion exposes.
3. the present invention also provides a kind of method of utilizing the foregoing invention device to carry out the golden cuttlefish incubating oosperm, pedestal is put into the hatchery, put a sleeving connecting rod, penetrate a nido hatching basket on the sleeving connecting rod, with the hatchery depth of water, cover connects sleeving connecting rod and the nido hatching basket of requirement more according to actual needs; Fertilized egg is taken from adherance, put into the nido hatching basket hatching of this hatching apparatus, place a fertilized egg (10) on the drum of a similar honeycomb bottom, behind incubation of membrane, just incubating the young swims out of from nido hatching basket sidewall, chorion is fallen in the drum of similar honeycomb bottom, and incubating oosperm shifts out apparatus of the present invention after finishing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310194308.XA CN103238545B (en) | 2013-05-23 | 2013-05-23 | Device and method for hatching fertilized eggs of sepia esculenta |
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| CN201310194308.XA CN103238545B (en) | 2013-05-23 | 2013-05-23 | Device and method for hatching fertilized eggs of sepia esculenta |
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| CN103238545A true CN103238545A (en) | 2013-08-14 |
| CN103238545B CN103238545B (en) | 2014-06-18 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108432666A (en) * | 2018-03-22 | 2018-08-24 | 中国水产科学研究院黄海水产研究所 | Lai Shi intends cuttlefish fertilized eggs long-distance transport method |
| TWI650071B (en) * | 2018-01-22 | 2019-02-11 | 國立臺灣海洋大學 | Incubation system and method thereof for aquatic creatures |
| 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 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI650071B (en) * | 2018-01-22 | 2019-02-11 | 國立臺灣海洋大學 | Incubation system and method thereof for aquatic creatures |
| CN108432666A (en) * | 2018-03-22 | 2018-08-24 | 中国水产科学研究院黄海水产研究所 | Lai Shi intends cuttlefish fertilized eggs long-distance transport method |
| 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 |
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| CN103238545B (en) | 2014-06-18 |
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