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Method of jellyfish fertilization and hatching

A jellyfish and hatching pond technology, applied in climate change adaptation, fish farming, application, etc., can solve the problems of low synchronization of individual development, easy spoilage and deterioration of water quality, long fertilization and incubation period of jellyfish, etc., so as to shorten the fertilization and incubation period. , Prevent the phenomenon of ingesting fertilized eggs, and keep the water fresh.

Active Publication Date: 2017-02-22
LIAONING OCEAN & FISHERIES SCI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of long jellyfish fertilization and hatching cycle, low synchronization of individual development, easy corruption and deterioration of water quality, etc., and provide a jellyfish fertilization and hatching method with convenient operation and strong practicability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for hatching fertilized eggs of jellyfish, comprising the steps of:

[0026] (1) Collection and selection of jellyfish: In the breeding pond, select female or male jellyfish with an umbrella diameter of more than 30cm, a body weight of more than 8kg, no damage, good color, and full gonad development as breeding jellyfish, and the ratio of male to female is 2. :1; Whether the gonads are full or not can be observed under a microscope. The specific method is: use tweezers to take 1-2 cm of the gonads of female or male jellyfish, and identify males and females under the microscope. If the gonads are full and arranged compactly under the microscope, it can be considered that the gonads are full. , can be used as breeding stingers; select 20 female individuals and 10 males as breeding stingers;

[0027] (2) Jellyfish transportation: choose a 1000-liter water tank, pack 10 jellyfish in each box, cover with black cloth, and transport to the seedling workshop within 2 h...

Embodiment 2

[0034] The difference from Example 1 is:

[0035] Fertilization and incubation: continuous incubation for 3 days

[0036] Statistical analysis: Calculated from the completion of fertilization and spawning, after 3 days of breeding, a total of 30.07 million polyps were obtained through quantitative analysis, including 30.07 million polyps with 4 tentacles. Taking 4 tentacles as the standard, the individual development synchronization is 100 %.

Embodiment 3

[0038] The difference from Example 1 is:

[0039] Fertilization and hatching: The mouth and wrist are not removed from the sting. Put the male and female individuals into the hatching tank at 3:00 am, remove the stinger at 7:00 am, keep the male and female separately, and repeat the above operation until 3:00 am the next day. Lasts 9d.

[0040] Statistical analysis: A total of 29.31 million polyps were obtained through quantitative analysis, including 23.15 million polyps with 4 tentacles and 6.16 million polyps with 8 tentacles. Taking 4 tentacles as the standard, the individual development synchrony was 79%.

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PUM

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Abstract

The invention discloses a method of jellyfish fertilization and hatching. The method includes: selecting female jellyfishes and male jellyfishes mature in gonad development, and respectively removing oral arm portions, and putting umbrellas into a hatching pond for continuous incubation for 3-5 days, wherein the proportion of female jellyfishes and male jellyfishes is 2:1 or 3:1, and the umbrellas are put in the hatching pond at 2-3am after oral arm portions of female jellyfishes and male jellyfishes are removed respectively. Due to stimulation of removal of the oral arm portions, female and male jellyfishes release sperms and ova in a centralized manner, sperms and ova can be hatched for 3-5 days continuously, synchronization of development of seed individuals is improved, and the step of repeated temporary culture is not required in the hatching process. The method is simple to operate and high in practicality, the problems that the spawning period of jellyfishes is long, water quality is prone to going bad, seed development is unsynchronized and the like are solved, economic cost for purchasing parent jellyfishes is lowered effectively, and a simple and effective novel method is provided for structuring a jellyfish selection and breeding family.

Description

technical field [0001] The invention relates to the field of jellyfish culture, in particular to a fertilization and hatching method for jellyfish seed breeding. Background technique [0002] Jellyfish (Rhopilema esculentum) belongs to the phylum Cnidarians, the Class Aquaphyta, the Order Rhizopus, the Family Rhizopus, and the genus Jellyfish. Jellyfish is one of the important edible jellyfish in my country, accounting for 80% of the edible jellyfish. Jellyfish has high edible value and medicinal value, and is an important fishing target for Chinese fishermen and a seawater breeding species. In recent years, due to the destruction of its habitat by human activities and long-term overfishing, the resources of jellyfish are on the verge of depletion. For this reason, the research on artificial breeding and breeding technology of jellyfish is beneficial to the recovery of jellyfish germplasm resources and the health of the breeding industry. Sustained development is of great s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/17
CPCA01K61/00Y02A40/81
Inventor 李云峰周遵春赫崇波田梅琳董颖陈仲高杉
Owner LIAONING OCEAN & FISHERIES SCI RES INST
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