CN102657120A - Method for breeding pelagic-period larva of octopus vulgaris in aerial fog manner - Google Patents
Method for breeding pelagic-period larva of octopus vulgaris in aerial fog manner Download PDFInfo
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- CN102657120A CN102657120A CN2012101419600A CN201210141960A CN102657120A CN 102657120 A CN102657120 A CN 102657120A CN 2012101419600 A CN2012101419600 A CN 2012101419600A CN 201210141960 A CN201210141960 A CN 201210141960A CN 102657120 A CN102657120 A CN 102657120A
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Abstract
The invention relates to a method for breeding pelagic-period larva of octopus vulgaris in an aerial fog manner. The method is characterized in that micro-pore pipes are arranged on the annular wall at the bottom of a cultivation container, and aerial fog is formed around the sidewall of a tank to prevent the larva of the octopus vulgaris from contacting the sidewall of the tank. According to the method, fed baits are mixtures of artemia nauplii and crab megalopa, wherein the unsaturated fatty acid strengthening is performed on micro-capsule marimo powder to obtain the artemia nauplii. According to the method, the formed aerial fog can effectively avoid mechanical damage caused by the factor that the pelagic larva swims in adherence on the basis of ensuring sufficient dissolved oxygen. Microbubbles in the aerial fog do not harm the larva of the octopus vulgaris; and upflow is formed by the aerial fog, and circulating water flow is formed by the upflow and center inlet and outlet water, so that the larva and the baits are uniformly distributed in a water body, and the larva is prevented from striving for food and eating each other.
Description
Technical field
The invention belongs to technical field of aquaculture, be specifically related to a kind of method of true octopus pelagic period larval culture.
Technical background
True octopus (Octopus vulgaris) belongs to Mollusca, Cephalopoda, Octopodida, octopus section, octopus genus, is commonly called as to be octopus, inhabits shallow sea grit or cay place more, is cosmopolitan.In China, true octopus mainly is distributed in the southeastern coast marine site.Show that according to the World Food Programme (FAO, 2010) statistics world's siphonopods quantity of the catch is 4,300,000 tons, wherein true octopus has occupied 50% of octopus class.
As the economic kind of a kind of very tool breed potentiality and development prospect, true octopus has characteristics such as fast growth, culture-cycle weak point, nutritive value height.Tens countries such as Spain, Chile, Mexico have successively carried out correlative studys such as seed breeding, breed at present, and have obtained certain achievement.And China's research in this respect relatively lags behind, and related data is deficient.
The maximum bottleneck of the true octopus breed of puzzlement at present is cultivation (Iglesias, 2004 of the pelagic period young; Villanueva & Norman, 2008), this in stage the young high mortality, extremely low adhesive rate etc. be not well solved.In order to solve this difficult problem, supporting with it cultivation facility and technology are also constantly being groped and are being improved.The cultivation ocean temperature is different, has determined true octopus young pelagic period length, needs 35-60 days usually.Circular cylinder (the 100L-5m of external employing usually
2), adopt circular cement pit to carry out larval culture and China.In so long culture period, no matter be circular cylinder or cement pit, the pelagic period the young all casing wall of percussion for several times, pool wall and cause the mechanical damage of health, thus cause death.So far, still there is not the generation that feasible ways and means can be avoided this type of thing.Therefore, for the sound development that true octopus is cultured, needing badly provides a kind of and prevents that effectively the true octopus young is rebuffed, improves the breeding method of larvae survival rate.
Summary of the invention
The purpose of this invention is to provide a kind of aerosol and cultivate the method for true octopus pelagic period young, be rebuffed easily and cause mechanical damage thereby solve in the existing cultural method young, thus the problem of the high mortality that causes, to remedy the deficiency of prior art.
True octopus pelagic period larval culture method of the present invention is at the bottom ring wall of cultivating container gas tube to be set, and the inflation back forms aerosol and stops the young to touch pool wall around pool wall.
The pore size of the air-filled pore on the above-mentioned gas tube is 10-20 μ m, can discharge micro-bubble like this, thereby around pool wall, forms aerosol, and produces upwelling; Gas tube can be selected the porous nano pipe for use.
The cultivation density of the true octopus young in container is 5-20/L.
Cultivate and adopt the top water inlet of water layer central authorities in the container, the draining of container bottom central authorities, flowing water is cultivated, flow velocity 60-120ml/min.Light intensity maintains 100-300Lx.
Bait is selected for use the big eye of artemia nauplii and crab phase young 5:1 to mix and is thrown something and fed, and the density of throwing something and feeding is 0.1-0.6/ml, and wherein the artemia nauplii micro-capsule ball algae dry powder of throwing something and feeding carries out unsaturated fatty acid and strengthens after 24 hours and obtain, and micro-capsule ball algae 1g strengthens 1 * 10
5Individual artemia nauplii.
The present invention has set up the method that a kind of aerosol is cultivated true octopus pelagic period young, is guaranteeing that the aerosol of formation can effectively have been avoided the adherent mechanical damage of swimming and causing of floating larva on the sufficient basis of dissolved oxygen.Micro-bubble is not only to the not injury of the true octopus young in the aerosol; And because the existence of aerosol has formed the upwelling that is made progress by the bottom; Form circulating water flow with central Inlet and outlet water; The young and bait can be uniformly distributed in the water body, effectively avoid the generation that scrambles for food, nibbles each other phenomenon each other between the young.Method of the present invention is an important innovation of carrying out extensive true octopus seed, and practice property is strong, effectively stable, and the porous nano pipe that is adopted is anticorrosive, resistance to wear, durable, cheap, easy to utilize.Simultaneously, this method has had more careful requirement for physical and chemical indexs such as the required illumination of the young, flow velocitys, and bait is formed and the density of throwing something and feeding more meets pelagic period young growing requirements.
Embodiment
The cultivation container that the present invention adopts can be the container of the present circular configuration of using always, also can select other structure for use.And the density of arranging of air-filled pore can be selected according to actual conditions on the gas tube.
Embodiment 1:
Be provided with porous nano pipe at the circular cylinder bottom portion ring wall of cultivating of 100L in March, 2012, and inflation aperture 10-20 μ m, the micro-bubble of discharge form aerosol around pool wall.600 of the true octopus young that just hatched are moved on in the cultivation container 6/L of larval culture density.Adopt the top water inlet of water layer central authorities, the draining of container bottom central authorities, flowing water is cultivated, flow velocity 60-80ml/min.Water temperature 19-20 ℃, seawater salinity is 34 ‰, and light intensity is about 200Lx.Bait is artemia nauplii, and the density of throwing something and feeding is 0.2-0.3/ml.And parallel control group adopts traditional little inflation of gas stone, and bubble diameter is greater than 1mm, other condition homogeneities.Cultivated the larvae survival rate 23% that adopts aerosol to cultivate, per day growth rate 4.1% through 25 days.Control group larvae survival rate 8%, per day growth rate 3.2%.The upwelling that the aerosol inflation forms makes the cultivation group than control group significant raising arranged in larvae survival rate and per day growth rate.
Embodiment 2:
The true octopus pelagic period young is cultivated in the cultivation pond that be 500L water body at 6 volumes in April, 2012, and pond inner bottom part ring wall is provided with the porous nano pipe, and inflation aperture 10-20 μ m, the micro-bubble of discharge form aerosol around pool wall.The true octopus young that has just hatched is moved on in the cultivation pond, and young density is controlled at 15-20/L.Adopt the top water inlet of water layer central authorities, the draining of container bottom central authorities, flowing water is cultivated, flow velocity 100-120ml/min.Water temperature 21-23 ℃, seawater salinity is 34 ‰, and light intensity is about 100-300Lx, and the bait of throwing something and feeding is the big eye of the nearly side crab of the meat ball phase young, and density is 0.4-0.6/ml.Simultaneously, set up 2 of parallel control groups (A and B), 6 of A groups are cultivated the pond, each 500L, and the about 10lx of intensity of illumination is near complete black state; B group also is 6 and cultivates ponds, and each volume is 500L, and intensity of illumination all adopts traditional gas stone inflation at 500-800lx, and bubble diameter is greater than 1mm, other condition homogeneities.Cultivated through 25 days, the average survival rate 37% of the young that adopts aerosol to cultivate, per day growth rate is about 5.3%.The average survival rate 6% of the A control group young, the per day growth rate of the young is about 3.9%; The average survival rate 11% of the B group young, per day growth rate is about 4.9%.This method is in the aerosol inflation or all there has been significant variation the aspects such as control of intensity of illumination than control group, on data, also fully reflects the remarkable superiority that has.
Embodiment 3:
3-4 in 2012 with cultivating true octopus floating larva in the cultivation container of 4 500L water bodys, is provided with the porous nano pipe with pond inner bottom part ring wall between the month, and inflation aperture 10-20 μ m, the micro-bubble of discharge form aerosol around pool wall.Young density is controlled at 10/L.Adopt the top water inlet of water layer central authorities, the draining of container bottom central authorities, flowing water is cultivated, flow velocity 100-120ml/min.Water temperature is about 20 ℃, and seawater salinity is 34 ‰, and light intensity is about 200Lx.And adopt micro-capsule ball algae dry powder to carry out the unsaturated fatty acid reinforcement artemia nauplii and use after 24 hours, micro-capsule ball algae 1g strengthens 1 * 10
5Individual nauplius mixes with artemia nauplii after strengthening and the big eye of the nearly side crab of meat ball phase young 5:1 then and throws something and feeds, and the density of throwing something and feeding is 0.3-0.4/ml.Cultivated through 25 days, the average survival rate 63% of the young, per day growth rate is about 6%.Simultaneously parallel culture experiment compares last result such as following table to the effect of bait:
Table 1: the comparison of bait feeding effect
The present invention adopts the micro-capsule ball algae dry powder that is rich in unsaturated fatty acid to strengthen the nutrition of artemia nauplii, is the new cultural method of not reporting, and is practical, and efficient is high.Through the bait mix and match, not only the nutrition of halogen worm is strengthened, and the crab young through the artemia larvae of ingesting after, its nutrition also further improves.Like this, the diversity of bait has satisfied the nutritional need of true octopus young growth, so indexs such as survival rate and day growth rate are able to bigger lifting.
Claims (6)
1. an aerosol is cultivated the method for true octopus pelagic period young, it is characterized in that described method is at the bottom ring wall of cultivating container gas tube to be set, and the inflation back forms aerosol and stops the true octopus young to touch pool wall around pool wall.
2. the method for claim 1, the pore size that it is characterized in that air-filled pore on the described gas tube is 10-20 μ m.
3. according to claim 1 or claim 2 method is characterized in that described gas tube is the porous nano pipe.
4. the method for claim 1 is characterized in that the cultivation density of the described true octopus young in cultivating container is 5-20/L.
5. the method for claim 1 is characterized in that adopting in the described cultivation container top water inlet of water layer central authorities, the draining of container bottom central authorities, and flowing water is cultivated, and flow velocity is 60-120ml/min; Light intensity is 100-300Lx.
6. the described method of claim 1 bait of throwing something and feeding; Selecting for use the big eye of artemia nauplii and crab phase young 5:1 to mix throws something and feeds; The density of throwing something and feeding 0.1-0.6/ml, wherein the artemia nauplii micro-capsule ball algae dry powder of throwing something and feeding carries out unsaturated fatty acid and strengthens after 24 hours and obtain.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104839094A (en) * | 2015-04-22 | 2015-08-19 | 烟台市水产研究所 | Method and device for breeding octopus ocellatus larvae |
| CN105941212A (en) * | 2016-05-05 | 2016-09-21 | 中国海洋大学 | Method for breeding atomization-type octopus vulgaris pelagic period larva |
| CN107455615A (en) * | 2017-07-21 | 2017-12-12 | 浙江海洋大学 | A kind of artemia fortification method suitable for true octopus floating larva culture |
| CN109006586A (en) * | 2018-08-07 | 2018-12-18 | 莆田市水产科学研究所 | A kind of true octopus young is by the breeding method for being changed into and dwelling at bottom that swims |
| CN110250055A (en) * | 2019-06-19 | 2019-09-20 | 大连海洋大学 | A kind of aquatic livestock demersal egg and hatching larvae device |
| CN116548355A (en) * | 2023-06-27 | 2023-08-08 | 中国水产科学研究院 | Brine young feeding device in aquatic offspring seed cultivation process and using method |
Citations (1)
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| CN102048056A (en) * | 2010-10-22 | 2011-05-11 | 浙江海洋学院 | Octopus larva initial baits and production method thereof |
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2012
- 2012-05-09 CN CN2012101419600A patent/CN102657120A/en active Pending
Patent Citations (1)
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| CN102048056A (en) * | 2010-10-22 | 2011-05-11 | 浙江海洋学院 | Octopus larva initial baits and production method thereof |
Non-Patent Citations (5)
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| J IGLESIAS等: "Rearing of Octopus vulgaris paralarvae: Present status, bottlenecks and trends", 《AQUACULTURE》 * |
| J IGLESIAS等: "The Completed Life Cycle of the Octopus (Octopus vulgaris, Cuvier) under Culture Conditions: Paralarval Rearing using Artemia and Zoeae, and First Data on Juvenile Growth up to 8 Months of Age", 《AQUACULTURE INTERNATIONAL》 * |
| ROGER VILLANUEVA: "Experimental rearing and growth of planktonic Octopus vulgaris from hatching to settlement", 《CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES》 * |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104839094A (en) * | 2015-04-22 | 2015-08-19 | 烟台市水产研究所 | Method and device for breeding octopus ocellatus larvae |
| CN104839094B (en) * | 2015-04-22 | 2018-07-17 | 烟台市水产研究所 | A kind of true octopus larval culture method and apparatus |
| CN105941212A (en) * | 2016-05-05 | 2016-09-21 | 中国海洋大学 | Method for breeding atomization-type octopus vulgaris pelagic period larva |
| CN105941212B (en) * | 2016-05-05 | 2018-11-16 | 中国海洋大学 | A kind of true octopus pelagic period larval culture method of atomization type |
| CN107455615A (en) * | 2017-07-21 | 2017-12-12 | 浙江海洋大学 | A kind of artemia fortification method suitable for true octopus floating larva culture |
| CN107455615B (en) * | 2017-07-21 | 2020-05-22 | 浙江海洋大学 | Artemia nutrition strengthening method suitable for culturing octopus ocellatus planktonic larvae |
| CN109006586A (en) * | 2018-08-07 | 2018-12-18 | 莆田市水产科学研究所 | A kind of true octopus young is by the breeding method for being changed into and dwelling at bottom that swims |
| CN110250055A (en) * | 2019-06-19 | 2019-09-20 | 大连海洋大学 | A kind of aquatic livestock demersal egg and hatching larvae device |
| CN116548355A (en) * | 2023-06-27 | 2023-08-08 | 中国水产科学研究院 | Brine young feeding device in aquatic offspring seed cultivation process and using method |
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Application publication date: 20120912 |