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Sexual artificial propagation technique for hermatypic corals

A technology for artificial reproduction and coral, applied in animal husbandry and other directions, can solve the problem of less research on sexual artificial reproduction of corals, and achieve the effects of easy cultivation technical conditions, stable attachment devices and high survival rate.

Inactive Publication Date: 2014-09-10
GUANGDONG OCEAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The asexual reproduction of corals is mainly used in the transplantation of corals. There are many studies by domestic and foreign scholars, but there are few studies on the sexual artificial reproduction of corals.

Method used

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  • Sexual artificial propagation technique for hermatypic corals

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1 adopts the following steps to realize the present invention:

[0021] 1. Collection of coral parents: In the Xuwen Coral Reef Nature Reserve, the coral gonads developed to the third stage in late March. In the natural sea area where the reef-building coral reefs are distributed, healthy female and male living parents of corals with a diameter greater than 30cm were collected and raised temporarily. in the aquarium;

[0022] 2. Artificial cultivation of coral parents: The size of the coral parent cultivation aquarium is 180 cm×120 cm×100 cm, and the cultivation environment conditions: natural light, water temperature 25±1.0°C, salinity 31±2.0, dissolved oxygen above 8 mg / L, circulation The water flow rate is 1800 L / h, the Artemia larvae are fed once every 2 days, the feeding amount is 20 / L, the seawater is changed every 2 days, the water change rate is 30%, and CaCl is added at the same time 2 The solution reached 0.21 g / L, and the growth and gonad developm...

Embodiment 2

[0027] Embodiment 2 adopts the following steps to realize the present invention:

[0028] 1. Collection of coral parents: In the Xuwen Coral Reef Nature Reserve, the coral gonads developed to the third stage in late March. In the natural sea area where the reef-building coral reefs are distributed, healthy female and male living parents of corals with a diameter greater than 30cm were collected and raised temporarily. in the aquarium;

[0029] 2. Artificial cultivation of coral parents: The size of the coral parent cultivation aquarium is 180 cm×120 cm×100 cm, and the cultivation environment conditions: natural light, water temperature 25±1.0°C, salinity 31±2.0, dissolved oxygen above 8 mg / L, circulation The water flow rate is 2000 L / h, the Artemia larvae are fed once every 2 days, the feeding amount is 30 / L, the sea water is changed once every 2 days, the water change rate is 40%, and CaCl is added at the same time 2 The solution reached 0.25 g / L, and the growth and gonad de...

Embodiment 3

[0034] Embodiment 3 adopts the following steps to realize the present invention:

[0035] 1. Collection of coral parents: In the Xuwen Coral Reef Nature Reserve, the coral gonads developed to the third stage in late March. In the natural sea area where the reef-building coral reefs are distributed, healthy female and male living parents of corals with a diameter greater than 30cm were collected and raised temporarily. in the aquarium;

[0036] 2. Artificial cultivation of coral parents: The size of the coral parent cultivation aquarium is 180 cm×120 cm×100 cm, and the cultivation environment conditions: natural light, water temperature 25±1.0°C, salinity 31±2.0, dissolved oxygen above 8 mg / L, circulation The water flow rate is 1500 L / h, and the Artemia larvae are fed every 2 days at a rate of 10 / L. The seawater is changed every 2 days, and the water change rate is 20%. 2 The solution reached 0.15 g / L, and the growth and gonad development status of corals were observed;

[00...

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Abstract

The invention discloses a sexual artificial propagation technique for hermatypic corals. The sexual artificial propagation technique for hermatypic corals includes: acquiring eligible healthy living parents of hermatypic coals in a natural sea area with hermatypic coal distributed in late March, cultivating hermatypic coal parents under manual control, placing a prepared coral planula attachment device in a parent cultivation aquarium when gonads of the coral parents develop to a stage IV, observing emission and attachment processes of coral gametes, moving the coral parents to other aquariums for temporary rearing after emission of the gametes is finished, and cultivating larvae of the hermatypic corals under manual control. The sexual artificial propagation technique for the hermatypic corals has the advantages that the coral larva survival rate is high, the planula attachment device is stable, the larva natural attachment rate is high, cultivation technical conditions are easy to control and implement, the problems in transplantation of the hermatypic corals when coral reef degeneration is solved and coral reefs are recovered are avoided, and effective solutions can be provided for recovery of the coral reef ecosystem and protection of the marine ecosystem.

Description

technical field [0001] The invention relates to an artificial propagation technology of corals, in particular to a method for sexual reproduction and larvae cultivation of reef-building stony corals under artificial control conditions and related supporting facilities. Background technique [0002] Coral reefs are an important part of the marine ecosystem and play an important role in the proliferation of marine biological resources, protection of the marine environment, reduction of marine disasters, and reduction of the greenhouse effect of the atmosphere. However, for a long time, due to insufficient understanding of the biological characteristics and ecological value of corals and the weak awareness of public protection, coral reefs are facing a serious ecological crisis. Therefore, the study of coral artificial propagation technology has important practical significance for the restoration and reconstruction of degraded coral reef ecosystems. Reef-building corals are a...

Claims

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Application Information

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IPC IPC(8): A01K67/033
Inventor 刘丽申玉春金磊徐秀菊
Owner GUANGDONG OCEAN UNIVERSITY
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