CN102885004A - Simple method for hatching male larva of mauremys mutica - Google Patents
Simple method for hatching male larva of mauremys mutica Download PDFInfo
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- CN102885004A CN102885004A CN2012103919381A CN201210391938A CN102885004A CN 102885004 A CN102885004 A CN 102885004A CN 2012103919381 A CN2012103919381 A CN 2012103919381A CN 201210391938 A CN201210391938 A CN 201210391938A CN 102885004 A CN102885004 A CN 102885004A
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Abstract
The invention discloses a simple method for hatching the male larva of mauremys mutica, belonging to the technical field of control on the male gender of terrapin animals. The method comprises the following steps: 1) during the mating season of the mauremys mutica, putting the long diameter of fertilized ovum into a hatching matrix, enabling embryos to be upward, and covering a hatching matrix with same humidify on the fertilized ovum; 2) horizontally arranging a hatching box on a bracket in an artificial cellar, controlling the temperature and the air humidity in the cellar, and hatching for 55-65 days in the cellar; and 3) when 23 circles of developmental duration for hatching the ovum of the mauremys mutica into the embryos in the cellar finishes, horizontally moving the hatching box into a common hatching room to continue to hatch, and obtaining the larva of the mauremys mutica by hatching for 10-20 days. According to the method, the gender of the newly born larva of the mauremys mutica can be controlled effectively, the ovum hatching rate is increased, and the larva quality is enhanced.
Description
Technical field
The invention belongs to the control technology field of terrapin animal male sex, be specifically related to a kind of simple and easy method of hatching the male young of Mauremys mutica.
Background technology
Mauremys mutica (
Clemmys mutica) be a kind of Hard-shelled Freshwater Turtles that is distributed widely in east China, southern areas.This kind has high edible, medicinal and ornamental value, is one of important kind of aquaculture.Mauremys mutica fertility and natural hatching success are all lower, add the deterioration of artificially excessively catching and killing with natural environment, and its wild natural resources is close to exhaustion.Although propagating artificially of this kind obtained fast development, the raiser still mainly adopts nature or higher temperature to hatch the method for tortoise ovum, high temperature raising in its hatching process.Higher incubation temperature can shorten the ovum brooding time, but often causes egg hatching rate, young abnormal rate higher, and tends to hatch poky female individuals; Lower temperature hatching tortoise ovum can be hatched partially male young tortoise, may cause the slow even stagnation of embryonic development in the ovum but cross low temperature, and brooding time prolongs, incubation rate is low.Mauremys mutica Sex Determination temperature sensitive period,, in embryonic development early stage and later stage, incubation temperature did not affect the sex of hatchling in the stage casing (15～23 phase) of its embryonic development; And in temperature sensitive period, the incubation temperature that the embryo experiences is in 24～27 ℃, hatchling be mainly male and state better, growth rate is significantly greater than female individuals.Therefore, utilizing the male young of control environment control hatching in propagating process artificially is a kind of convenient effective way that reduces aquaculture cost, increases economic efficiency.
Summary of the invention
For the problem that prior art exists, the object of the invention is to design provides a kind of technical scheme of hatching the male young of Mauremys mutica.The method can effectively be controlled the newborn young sex of Mauremys mutica, and is conducive to improve egg hatching rate, the young tortoise quality of enhancing.
Described a kind of simple and easy method of hatching the male young of Mauremys mutica is characterized in that may further comprise the steps:
1) Mauremys mutica mating season, with the hatching box of ventilative casing as newborn ovum, spread the thick hatching medium of 4～6cm at hatching box inner bottom part, hatching medium humidity remains on 30～50%, the fertilized egg major diameter keeps flat into hatching medium, the embryo position upwards covers the hatching medium of the thick same humidity of 1～2mm more again on fertilized egg;
2) will hatch box and be placed horizontally on the support in the dark artificial cellar of 2.5～3.0m, temperature is controlled at 24～27 ℃ in the cellar, and air humidity remains on 60～90%, and hatching is 55～65 days in the cellar;
3) hatching tortoise ovum to the embryonic development in the ovum is gone through the phase and is surpassed 23 after dates in the cellar, will hatch the box level and move to common hatching house and continue to hatch, and hatches that young tortoise hatches after 10～20 days.
Described a kind of simple and easy method of hatching the male young of Mauremys mutica is characterized in that the hatching box is the cuboid tub of upper opening in the step 1).
Described a kind of simple and easy method of hatching the male young of Mauremys mutica, it is characterized in that hatching box inner bottom part spreads the thick hatching medium of 4.5～5.5cm in the step 1), hatching medium humidity remains on 35～45%, the fertilized egg major diameter keeps flat into hatching medium, the embryo position upwards covers the hatching medium of the thick same humidity of 1.2～1.8cm more again on fertilized egg.
Described a kind of simple and easy method of hatching the male young of Mauremys mutica is characterized in that hatching medium is vermiculite in the step 1).
Described a kind of simple and easy method of hatching the male young of Mauremys mutica, it is characterized in that step 2) in the artificial cellar control method of temperature be: set up sunshade with rice straw or other crop above the artificial cellar, by crop surface spray control cellar humidity, keep storing interior temperature with this.
Described a kind of simple and easy method of hatching the male young of Mauremys mutica is characterized in that step 2) in the cellar temperature be controlled at 25～26 ℃, air humidity remains on 70～80%, hatches 57～63 days in the cellar.
Described a kind of simple and easy method of hatching the male young of Mauremys mutica is characterized in that common hatching house temperature is controlled to be 30～32 ℃ in the step 3).
The Sex Determination pattern of Mauremys mutica belongs to the partially female temperature dependent form pattern of the partially male high temperature of low temperature among the present invention, and hatching property is 28～29 ℃ than the key temperatures of 1:1, and the Sex Determination temperature sensitive period is in the stage casing (15～23 phase) of its embryonic development.In temperature sensitive period, the embryo grows the then main male young of output being lower than under 27 ℃ of conditions in the ovum, grows the then main female body young of output under 30 ℃ of conditions being higher than; At Late Embryogenesis, incubation temperature can not affect the hatchling sex.
The present invention is by reasonably controlling incubation temperature, humidity and time, and utilize the shady and cool environment in cellar to hatch growth phase to the male tortoise seedling of Mauremys mutica fast, main region in the cultivation of this kind of south China is easy to implement easy to operate, help to improve this kind and propagate output artificially, promote the sustainable development of aquaculture industry.
Hatching success of the present invention reaches more than 85%, and male ratio surpasses 85%, and is higher more than 25% than the growth rate of the female young tortoise of hatching under the common hatching house condition, and the locomitivity no significant difference.
Embodiment
Further specify the present invention below in conjunction with specific embodiment.
Embodiment
Collect the newborn ovum of Mauremys mutica in mating season (the first tenday period of a month in May are to late July), with ventilative tub as the hatching box, the hatching box is the cuboid tub of upper opening, hatching box inner bottom part spreads the thick vermiculite of 4cm, 4.5cm, 5cm, 5.5cm or 6cm as hatching medium, vermiculite humidity remains on 30%, 40% or 50%, ovum keeps flat into hatching medium by the major diameter direction, embryo position (ovum central authorities hickie) upwards, ovum spacing 0.5 cm, 0.6cm or 0.8cm, on the ovum again coated with the vermiculite layers of the thick same humidity of 1cm, 1.5cm or 2cm;
Dig the dark artificial cellar of L-type of system 2.5～3.0 m and do certain waterproof measure, set up horizontal stand with plank or iron sheet in the cellar, set spacing 20～30 cm, temperature is controlled at 24 ℃, 25 ℃, 26 ℃ or 27 ℃ in the cellar, and air humidity remains on 60%, 70%, 80% or 90%;
The hatching box that the tortoise ovum is housed is placed horizontally on the cellar support, hatching medium temperature and cellar temperature are consistent substantially, the ovum brooding time is in the time of 55～65 days, embryonic development is gone through the phase substantially above 23 phases in the ovum, young sex is definite, then can will go out shell to continuing to hatch in the ovum in hatching later stage moves to the common hatching house of 30 ℃, 31 ℃ or 32 ℃ to the young, hatchling is transferred to receptacle and raises.
In Mauremys mutica mating season, the southern temperature of its main culturing area is usually higher, reduce the method for temperature in the cellar: 1 m place sets up sunshade with crops such as rice straws in the inclination mode above the cellar, moderately crop surface is sprinkled water to increase its humidity, and reduce temperature in the cellar for storing things with this.
Hatching medium humidity is consistent, and the newborn ovum hatching of Mauremys mutica is tested in 24～27 ℃ cellar condition and 30～32 ℃ common hatching house condition, and the hatchling phenotype has significant difference.Under the cellar condition, young tortoise hatched in about 70～90 days, and hatching success is about 85%, and male ratio surpasses 85%; Under the common hatching house condition, young tortoise hatched in about 60～80 days, and hatching success is 92%, and female ratio surpasses 70%.The male young tortoise that hatches under the cellar condition is higher by 25% than the growth rate of the female young tortoise of hatching under the common hatching house condition, and the locomitivity no significant difference.
Claims (7)
1. simple and easy method of hatching the male young of Mauremys mutica is characterized in that may further comprise the steps:
1) Mauremys mutica mating season, with the hatching box of ventilative casing as newborn ovum, spread the thick hatching medium of 4～6cm at hatching box inner bottom part, hatching medium humidity remains on 30～50%, the fertilized egg major diameter keeps flat into hatching medium, the embryo position upwards covers the hatching medium of the thick same humidity of 1～2mm more again on fertilized egg;
2) will hatch box and be placed horizontally on the support in the dark artificial cellar of 2.5～3.0m, temperature is controlled at 24～27 ℃ in the cellar, and air humidity remains on 60～90%, and hatching is 55～65 days in the cellar;
3) hatching tortoise ovum to the embryonic development in the ovum is gone through the phase and is surpassed 23 after dates in the cellar, will hatch the box level and move to common hatching house and continue to hatch, and hatches that young tortoise hatches after 10～20 days.
2. a kind of simple and easy method of hatching the male young of Mauremys mutica as claimed in claim 1 is characterized in that the hatching box is the cuboid tub of upper opening in the step 1).
3. a kind of simple and easy method of hatching the male young of Mauremys mutica as claimed in claim 1, it is characterized in that hatching box inner bottom part spreads the thick hatching medium of 4.5～5.5cm in the step 1), hatching medium humidity remains on 35～45%, the fertilized egg major diameter keeps flat into hatching medium, the embryo position upwards covers the hatching medium of the thick same humidity of 1.2～1.8cm more again on fertilized egg.
4. a kind of simple and easy method of hatching the male young of Mauremys mutica as claimed in claim 1 is characterized in that hatching medium is vermiculite in the step 1).
5. a kind of simple and easy method of hatching the male young of Mauremys mutica as claimed in claim 1, it is characterized in that step 2) in the artificial cellar control method of temperature be: set up sunshade with rice straw or other crop above the artificial cellar, by crop surface spray control cellar humidity, keep storing interior temperature with this.
6. a kind of simple and easy method of hatching the male young of Mauremys mutica as claimed in claim 1 is characterized in that step 2) in the cellar temperature be controlled at 25～26 ℃, air humidity remains on 70～80%, hatches 57～63 days in the cellar.
7. a kind of simple and easy method of hatching the male young of Mauremys mutica as claimed in claim 1 is characterized in that common hatching house temperature is controlled to be 30～32 ℃ in the step 3).
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103548769A (en) * | 2013-10-30 | 2014-02-05 | 丽水学院 | Control method of sexuality of Gekko japonicus juveniles |
| CN103609521A (en) * | 2013-11-13 | 2014-03-05 | 赵林斌 | Method for incubating all-male turtles |
| CN103875602A (en) * | 2014-04-15 | 2014-06-25 | 深圳职业技术学院 | Male young cyclemys trifasciata hatching method capable of obtaining high hatchability |
| CN104381204A (en) * | 2014-10-29 | 2015-03-04 | 玉莉带 | Artificial indoor feeding method for Asian yellow pond turtles in south |
| CN104430153A (en) * | 2014-11-07 | 2015-03-25 | 余珍青 | Breeding method for improving spawning rate and hatching rate of cuoraflavomarginatas |
| CN106386664A (en) * | 2016-08-29 | 2017-02-15 | 北海市铁山港区华俊养殖有限公司 | Short-cycle hatching method for male yellow pond turtles |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103548769A (en) * | 2013-10-30 | 2014-02-05 | 丽水学院 | Control method of sexuality of Gekko japonicus juveniles |
| CN103609521A (en) * | 2013-11-13 | 2014-03-05 | 赵林斌 | Method for incubating all-male turtles |
| CN103875602A (en) * | 2014-04-15 | 2014-06-25 | 深圳职业技术学院 | Male young cyclemys trifasciata hatching method capable of obtaining high hatchability |
| CN104381204A (en) * | 2014-10-29 | 2015-03-04 | 玉莉带 | Artificial indoor feeding method for Asian yellow pond turtles in south |
| CN104430153A (en) * | 2014-11-07 | 2015-03-25 | 余珍青 | Breeding method for improving spawning rate and hatching rate of cuoraflavomarginatas |
| CN106386664A (en) * | 2016-08-29 | 2017-02-15 | 北海市铁山港区华俊养殖有限公司 | Short-cycle hatching method for male yellow pond turtles |
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