A kind of Australian freshwater lobster hatching method in vitro

A freshwater lobster, in vitro technology, applied in the field of lobster farming, can solve the problems that fertilized eggs are difficult to develop larvae, it is difficult to ensure the supply of seedlings, and the number of eggs is small, so as to prevent infection of bacteria such as saprolegnia, increase the output of larvae, The effect of increased shrimp production

Active Publication Date: 2019-06-18
琼海胜达种植养殖场
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the Australian freshwater lobster has a small amount of eggs, and it will swim during the egg incubation process, which can easily cause the fertilized eggs to fall or be damaged by collision, which seriously affects the survival rate of the fertilized eggs. It is difficult to ensure a sufficient supply of seedlings, which seriously restricts the Australian freshwater lobster. Development of farming
At the same time, once the female shrimp dies during the hatching process, the remaining intact fertilized eggs are difficult to develop smoothly, resulting in a large number of healthy fertilized eggs that are difficult to develop into larvae, causing a lot of waste

Method used

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  • A kind of Australian freshwater lobster hatching method in vitro

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Embodiment 1

[0022] A method for hatching Australian freshwater lobsters in vitro, comprising the following steps:

[0023] (1) After the female shrimp is fertilized, determine the developmental degree of the fertilized eggs according to the living conditions of the female shrimp, catch the female shrimp and place them on the production bed respectively, adjust the temperature of the water body to 29°C, and increase the temperature by 0.4°C every day to 34°C ℃ is the spawning time; collect the fertilized eggs laid by the female shrimp, soak them in salt water with a mass fraction of 2% for 3 minutes for cleaning, and then put them into the in vitro hatching tray for in vitro incubation after cleaning;

[0024] (2) Put the cleaned fertilized eggs into the in vitro hatching tray for in vitro incubation until the larvae are released; the in vitro hatching tray is equipped with a pre-filter bucket, an ozone sterilizer, a heating tube and an aerator that match the water body The pre-filter barr...

Embodiment 2

[0026] A method for hatching Australian freshwater lobsters in vitro, comprising the following steps:

[0027] (1) After the female shrimp is fertilized, determine the development degree of the fertilized eggs according to the living conditions of the female shrimp. When the female shrimp is in labor, the female shrimp is caught and placed on the production bed respectively, and the temperature of the water body is adjusted to 30 ° C. ℃ is the spawning time; collect the fertilized eggs laid by the female shrimp but not fertilized and the fertilized eggs left by the dead female shrimp during the fertilization process, wash them with 4% salt water for 6 minutes, and wash them Put it into an in vitro incubation tray for in vitro incubation;

[0028] (2) The in vitro hatching tray is equipped with a pre-filter barrel, an ozone sterilizer, a heat pipe and an aerator that match the water body; the pre-filter barrel can filter and disinfect the water in the in-vitro hatching tray to ...

Embodiment 3

[0030] A method for hatching Australian freshwater lobsters in vitro, comprising the following steps:

[0031] (1) After the female shrimp is fertilized, determine the development degree of the fertilized eggs according to the living conditions of the female shrimp. When the female shrimp is in labor, the female shrimp is caught and placed on the production bed, and the temperature of the water body is adjusted to 28°C. ℃ is the spawning time; collect the fertilized eggs left by the dead female shrimp during the ovipositing process, soak them in 3% salt water for 5 minutes for cleaning, and put them into the in vitro incubation tray for in vitro incubation after cleaning;

[0032] (2) The in vitro hatching tray is equipped with a pre-filter barrel, an ozone sterilizer, a heat pipe and an aerator that match the water body; the pre-filter barrel can filter and disinfect the water in the in-vitro hatching tray to maintain in-vitro hatching The water quality in the tray is stable,...

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Abstract

The invention relates to the field of lobster culture and discloses an Australian cherax quadricarinatus in-vitro hatching method. After fertilized ova are obtained, the fertilized ova are cleaned and then are put into an in-vitro hatching plate to perform artificial hatching. The in-vitro hatching plate is provided with a front-arranged filter bucket matched with a water body, an ozone disinfection machine, a heating tube, an oxygen-enriching machine and a separation net, the fertilized ova are put on the separation net, bubble stones are arranged at the bottom of the in-vitro hatching plate to make a water flow so as to keep the fertilized ova slightly moving, the ozone disinfection machine controls regular disinfection in a time system mode, and the fertilized ova can be hatched into juvenile cherax quadricarinatus after about 40-50 days. By means of the Australian cherax quadricarinatus in-vitro hatching method, the infection rate of the fertilized ova can be reduced to be below 10%, the survival rate of hatching can be 90% or above, the survival rate of fertilized ovum hatching is greatly improved, the young prawn yield can be effectively improved, and remarkable economic benefits are produced.

Description

technical field [0001] The invention relates to the field of lobster culture, in particular to an Australian freshwater lobster hatching method in vitro. Background technique [0002] Australian freshwater lobster (Cherax quadricarinatus), scientifically known as four-ridge light-shelled crayfish, also known as red-clawed crayfish, is native to Australia. It looks like a lobster in the sea and is one of the most valuable freshwater economic shrimp species in the world. The body color of this shrimp is brownish green, and there is a membranous bright red band on the outer top of the claw of mature male shrimp, which is beautiful and beautiful, so it is also known as red claw shrimp. Australian freshwater lobsters mate and lay eggs outside the body. The female lobster hatches the eggs, and they can become larvae on their own in the mother body. When the shrimp leaves the mother body, the individual length can reach 0.8 cm, and they can be directly put into ponds for cultivatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/17
CPCY02A40/81
Inventor 陈丁胜
Owner 琼海胜达种植养殖场
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