CN103843709A - Method for controlling early-bred of odontobutis potamophila - Google Patents
Method for controlling early-bred of odontobutis potamophila Download PDFInfo
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- CN103843709A CN103843709A CN201410103794.4A CN201410103794A CN103843709A CN 103843709 A CN103843709 A CN 103843709A CN 201410103794 A CN201410103794 A CN 201410103794A CN 103843709 A CN103843709 A CN 103843709A
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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
- 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 method for controlling early-bred of odontobutis potamophila. The method comprises the following steps: screening parent fishes, and controlling water temperature during a parent fish rearing process, so that the gonad development of the odontobutis potamophila is promoted; and meanwhile, carrying out enriching broodstock through feeding live food such as pseudorasbora parva and freshwater shrimp, and setting an artificial spawning nest, so that the gonad maturity in advance of the odontobutis potamophila is promoted, the breeding cycle is shortened, and odontobutis potamophila spawning and hatch equipment is recycled. In addition, odontobutis potamophila fries (sold on February) early bred through the method is at least more than three months than fries (sold on May-June) bred normally, so that the fish growth cycle can be prolonged, and the economic benefit of fishes is increased.
Description
Technical field
The present invention relates to a kind of ahead of time technology of breeding of fish of controlling, be specifically related to a kind of control rivers and creeks Odontobutis obscura early numerous method belong to Aquaculture Science field.
Background technology
Rivers and creeks Odontobutis obscura (Odontobutis potamophila), be subordinate to Perciformes (Perciformes), goby suborder (Gobioidei), Odontobutis obscura section (Odontobutidae), Odontobutis (Odontobutis), extensively being distributed in each water systems such as China middle and lower reach of Yangtze River, Huaihe River, the Qiantang River, the Min River and the Zhujiang River, is the predacious fish that dwells at the bottom of the small-sized fresh water of China.In recent years, because the living environment of rivers and creeks Odontobutis obscura constantly worsens, egg-laying environment went to pot repeatly, and its wild resource sharply fails, and some areas have been difficult to find trace.At present, this fish is mainly supplied market by fishing for, but far can not satisfy the demands.More domestic mechanisms and unit have launched correlative study to its ecology, physiology and artificial culture technology, and obtain some impressive progresses.
Rivers and creeks Odontobutis obscura natural propagation be season at the beginning of 4 months to mid-June, wherein mid-April to late May is breeding period, belongs in batches the non-synchronous type fish that lay eggs.The method that the artificial propagation of rivers and creeks Odontobutis obscura adopts pond ecological natural to lay eggs mostly, collects the hatching of fish nest after laying eggs, hatch but artificially collect fish nest the invasion and attack that subject to the fungies such as water mold, and incubation rate is low, and survival rate of fish fry is lower.Also there are some areas to there is the habit of protecting nest according to the male parent population of rivers and creeks Odontobutis obscura, before its mating season, by parent population results, hasten parturition after putting into spawning pond, carry out natural spawning, male parent population is protected nest and hatches to remove in time dead ovum, and to instigate tail fin be fertilized egg oxygenation, to reach higher incubation rate.But parent population is protected nest and carries out hatching and can take more incubation equipment, and this has just determined the limitation of production technology, be difficult to form mass production, if it is early numerous to control rivers and creeks Odontobutis obscura, incubation equipment is repeatedly used, seedling cost will reduce greatly.
The present invention confirms, rivers and creeks Odontobutis obscura parent population gathered in mid-November, through the reinforced cultivating of 1 month, can shorten its breeding cycle, reached parent population and shifted to an earlier date spawning and fertilization, rivers and creeks Odontobutis obscura was laid eggs and incubation equipment utilizes in advance, to save cost.And early numerous rivers and creeks Odontobutis obscura fry (sale in February) is at least shifted to an earlier date more than 3 months than normal breeding fry (5-6 month sells), extend this sashimi (raw fish) long-term, thereby increased this fish economic benefit.
Summary of the invention
The object of this invention is to provide a kind of early numerous method of rivers and creeks Odontobutis obscura of controlling.Fully grasp propagate artificially under condition and the basis of rivers and creeks Odontobutis obscura breeding ecology environment and gonad development rule on, utilize the physiological change of Odontobutis obscura inherence, rivers and creeks and the synergy control self-reproduction of external environment, by controlling its external breeding environment factor, realize and gather rivers and creeks Odontobutis obscura parent population in mid-November, through the reinforced cultivating of 1 month, can shorten its breeding cycle, reach parent population and shift to an earlier date spawning and fertilization, thereby rivers and creeks Odontobutis obscura repoductive time ahead of time, make early the sale of going on the market in advance of numerous rivers and creeks Odontobutis obscura fry, thereby improve this fish economic benefit.
This test for achieving the above object, adopts following technical scheme:
(1) parent population screening: gather mid-November anosis, without wound, athletic 1 age above parent population, average body quality is more than 20 grams; (2) cultivating condition: water body pH7.0, dissolved oxygen 3mg/L; Culture density 15-20 tail/m3;
(3) water temperature control: water temperature is controlled at 24 ± 1 ℃;
(4) periodicity of illumination: parent population is at warm indoor culture, and periodicity of illumination is 4L:20D;
(5) reinforced cultivating: during parent fish rearing, the living bait of throwing something and feeding, carries out reinforced cultivating;
(6) laying nest: laying nest is made of pvc pipe;
(7) fry rearing: treat the fry eyes blackening in fertilized egg, whole body is blackening gradually, during by membrane, is placed in fry rearing cylinder, after 1～2 day, is used the fairy shrimp opening of artificial incubation and cultivates, and after within approximately 30 days, fry grows to 1cm, sells.
Described step 1) in selected rivers and creeks Odontobutis obscura parent population female-male proportion be 1.5:1.
Described step 3) in parent fish rearing pond water temperature be controlled at 24 ± 1 ℃.
Described step 5) middle laying nest bore 10～12cm, length 20～30cm.
Described step 7) in use artificial incubation fairy shrimp density for 3-5/mL opening and cultivate, throw something and feed every day 2 times.
The present invention, by controlling the ecological factor, particularly water temperature in rivers and creeks Odontobutis obscura parent fish rearing process, controls rivers and creeks Odontobutis obscura sexual gland premature ripening, shortens its breeding cycle, lays eggs and obtains seedling, thereby make the sale of going on the market in advance of this fish fry.
Embodiment
Control the early numerous method of rivers and creeks Odontobutis obscura, comprise the following steps:
(1) parent population screening: gather from Odontobutis obscura cultivation base, Nanjing aquatic products research institute week hilllock on November 16th, 2013 anosis, without wound, athletic 1 age above parent population, average body quality is more than 30 grams, female-male proportion is 1.5:1.
(2) cultivating condition: the glass jar that capacity is 0.2m3, depth of water 40cm; Periodicity of illumination is 4L:20D; Water temperature is controlled at respectively 21 ± 0.5 ℃, 24 ± 0.5 ℃, 27 ± 0.5 ℃; PH7.0, dissolved oxygen 3mg/L, culture density 15-20 tail/m3.
(3) reinforced cultivating: during during parent fish rearing, throw something and feed pseudorasbora parva and freshwater shrimp living bait, carry out reinforced cultivating.
(4) breeding fish nest: laying nest arranges 2, with pvc pipe making, bore 10～12cm, length 20～30cm; At the bottom of being placed in glass jar.
(5) egg reproduction ahead of time: temperature control the parent population of 24 ± 0.5 ℃ in spawning and fertilization on December 18---prelarva membrane on December 29 (3000 tail), all the other two temperature groups parent populations are all egg reproductions not of time about 1 month.
(6) fry rearing: treat the fry eyes blackening in fertilized egg, whole body is blackening gradually, during by membrane, be placed in fry rearing cylinder (identical with parent fish rearing water temperature), after 1～2 day, use the fairy shrimp opening of artificial incubation and cultivate (within one day, throwing something and feeding 2 times), after within approximately 30 days, fry grows to 1cm, sell, find that by fry rearing early numerous fry physique is stronger, after rupture of membranes, move about rapidly, the ferociousness of ingesting, the seed of normal breeding does not relatively have difference with 4～June.
Claims (5)
1. control the early numerous method of rivers and creeks Odontobutis obscura, comprise the following steps:
(1) parent population screening: gather mid-November anosis, without wound, athletic 1 age above parent population, average body quality is more than 20 grams;
(2) cultivating condition: water body pH7.0, dissolved oxygen 3mg/L; Culture density 15-20 tail/m3;
(3) water temperature control: water temperature is controlled at 24 ± 1 ℃;
(4) periodicity of illumination: parent population is at warm indoor culture, and periodicity of illumination is 4L:20D;
(5) reinforced cultivating: during parent fish rearing, the living bait of throwing something and feeding, carries out reinforced cultivating;
(6) laying nest: laying nest is made of pvc pipe;
(7) fry rearing: treat the fry eyes blackening in fertilized egg, whole body is blackening gradually, during by membrane, is placed in fry rearing cylinder, after 1～2 day, is used the fairy shrimp opening of artificial incubation and cultivates, and after within approximately 30 days, fry grows to 1cm, sells.
2. the method for claim 1, is characterized in that, described step 1) in selected rivers and creeks Odontobutis obscura parent population female-male proportion be 1.5:1.
3. the method for claim 1, is characterized in that, described step 3) in parent fish rearing pond water temperature be controlled at 24 ± 1 ℃.
4. the method for claim 1, is characterized in that, described step 5) middle laying nest bore 10～12cm, length 20～30cm.
5. the method for claim 1, is characterized in that, described step 7) in use artificial incubation fairy shrimp density for 3-5/mL opening and cultivate, throw something and feed every day 2 times.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410103794.4A CN103843709B (en) | 2014-03-19 | 2014-03-19 | A kind ofly control the early numerous method of Odontobulis mpotamophila |
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| CN201410103794.4A CN103843709B (en) | 2014-03-19 | 2014-03-19 | A kind ofly control the early numerous method of Odontobulis mpotamophila |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103651219A (en) * | 2013-12-26 | 2014-03-26 | 南京师范大学 | Cross breeding method for river odontobutis obscurus and marbled sand gobies |
| CN106212335A (en) * | 2016-07-29 | 2016-12-14 | 常熟理工学院 | A kind of method of Odontobutis obscura parent fish nurse breeding |
| CN107624685A (en) * | 2017-09-30 | 2018-01-26 | 南京市水产科学研究所 | A kind of half-manual breeding method of Odontobulis mpotamophila embryonated egg |
| CN111280101A (en) * | 2020-03-27 | 2020-06-16 | 广西壮族自治区水产科学研究院 | Method for breeding crayfishes in early spring in workshop |
| CN114176030A (en) * | 2021-12-13 | 2022-03-15 | 江苏省淡水水产研究所 | Early propagation cultivation method for odontobutis obscurus fries |
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| CN1846480A (en) * | 2006-04-14 | 2006-10-18 | 浙江省淡水水产研究所 | Artificial breeding method and incubator for shatang carp |
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| CN102893930A (en) * | 2012-03-22 | 2013-01-30 | 曲宪成 | Large-scale artificial propagation method for odontobutis potamophila |
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2014
- 2014-03-19 CN CN201410103794.4A patent/CN103843709B/en not_active Expired - Fee Related
Patent Citations (5)
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| CN1846480A (en) * | 2006-04-14 | 2006-10-18 | 浙江省淡水水产研究所 | Artificial breeding method and incubator for shatang carp |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103651219A (en) * | 2013-12-26 | 2014-03-26 | 南京师范大学 | Cross breeding method for river odontobutis obscurus and marbled sand gobies |
| CN106212335A (en) * | 2016-07-29 | 2016-12-14 | 常熟理工学院 | A kind of method of Odontobutis obscura parent fish nurse breeding |
| CN107624685A (en) * | 2017-09-30 | 2018-01-26 | 南京市水产科学研究所 | A kind of half-manual breeding method of Odontobulis mpotamophila embryonated egg |
| CN111280101A (en) * | 2020-03-27 | 2020-06-16 | 广西壮族自治区水产科学研究院 | Method for breeding crayfishes in early spring in workshop |
| CN114176030A (en) * | 2021-12-13 | 2022-03-15 | 江苏省淡水水产研究所 | Early propagation cultivation method for odontobutis obscurus fries |
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| CN103843709B (en) | 2015-12-30 |
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