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Artificial propagation method for Lethrinus nebulosus Forskal

A technology of artificial breeding and bream, which is applied in the direction of climate change adaptation, animal feed, additional food elements, etc., can solve the problems of limiting the number and scale of breeding, achieve convenient breeding, improve hatching rate and survival rate, and economic benefits and eco-efficiency improvement

Active Publication Date: 2019-07-19
HAINAN CHENHAI AQUATIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Distributed from the east coast of Africa in the Indian Ocean to the islands in the middle of the Pacific Ocean. It is produced in the Xisha Islands and Hainan Island in China. It is a warm-water bottom fish with a body length of 150-450mm. It is one of the important economic fish caught in the southern ocean of my country. Its economic value In recent years, it has become one of the important fishes for cage culture in Guangdong and the South China Sea. However, the number and scale of breeding are greatly limited because the seedlings rely on natural fishing.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of artificial reproduction method of star-spotted bream comprises the following steps:

[0030] (1) Screening of broodstock

[0031] The star-spotted bream broodstock is obtained through artificial domestication after being caught in the natural sea area. The 3-year-old male broodstock and the 2-year-old female broodstock are selected as fish species with no injury, no disease, and good vitality. The ratio of male to female is 1:1, and the weight of the female fish is The weight of the male fish is 3kg, and the weight of the male fish is 4kg;

[0032] (2) Breeding ponds for broodstock

[0033] The pond area is 2 mu, the water depth is 2m, the water source is sufficient, the water quality is pollution-free, the stocking density is 500 fish / mu, and the pond is equipped with an inlet and outlet.

[0034] (3) Intensive breeding of broodstock

[0035] Water quality management: adjust the water temperature to 22°C, salinity to 25, dissolved oxygen to 4mg / L, pH to 7....

Embodiment 2

[0047] A kind of artificial reproduction method of star-spotted bream comprises the following steps:

[0048] (1) Screening of broodstock

[0049] The star-spotted bream broodstock is obtained through artificial domestication after being caught in the natural sea area. The 3-year-old male broodstock and the 2-year-old female broodstock are selected as fish species with no injury, no disease, and good vitality. The ratio of male to female is 1:2.5, and the weight of the female fish is is 5kg, and the weight of male fish is 5kg;

[0050] (2) Breeding ponds for broodstock

[0051] The pond area is 3 mu, the water depth is 3m, the water source is sufficient, the water quality is pollution-free, the stocking density is 1000 fish / mu, and the pond is equipped with an inlet and outlet;

[0052] (3) Intensive breeding of broodstock

[0053] Water quality management: adjust the water temperature to 35°C, salinity to 35, dissolved oxygen to 8mg / L, pH to 8.4, ammonia nitrogen to 0.5mg / L,...

Embodiment 3

[0065] A kind of artificial reproduction method of star-spotted bream comprises the following steps:

[0066] (1) Screening of broodstock

[0067] The star-spotted bream broodstock is obtained through artificial domestication after being caught in the natural sea area. The 3-year-old male broodstock and the 2-year-old female broodstock are selected as fish species with no injury, no disease, and good vitality. The ratio of male to female is 1:2, and the weight of the female fish is 4kg, male fish weighs 4.5kg;

[0068] (2) Breeding ponds for broodstock

[0069] The pond area is 2.5 mu, the water depth is 2.5m, the water source is sufficient, the water quality is pollution-free, the stocking density is 750 fish / mu, and the pond has an inlet and outlet;

[0070] (3) Intensive breeding of broodstock

[0071] Water quality management: adjust the water temperature to 30°C, salinity to 30, dissolved oxygen to 6mg / L, pH to 8.0, ammonia nitrogen to 0.3mg / L, and light to 3500Lux. Ac...

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Abstract

The invention provides an artificial propagation method for Lethrinus nebulosus Forskal. The artificial propagation method includes the steps: parent fish screening; parent fish breeding ponds; parentfish strengthening breeding; parent fish spawning induction; fertilized egg collection; fertilized egg incubation; larva fish pond breeding. By means of management of breeding environments and scientific composition of parent breeding bait raw materials, parents can achieve gonadal maturation under artificial inducement for spawning and achieve propagation in advance, the survival rate of fish eggs is increased by manually regulating fertilized egg collection and incubation, fish egg development conditions are controlled during incubation, and the incubation rate of the Lethrinus nebulosus Forskal is greatly increased.

Description

technical field [0001] The invention relates to the technical field of aquatic cultivation, in particular to an artificial propagation method of the star-spotted bream. Background technique [0002] Lethrinus nebulosus Forsk·al, commonly known as Lianjian, Lihuang, belongs to the class of Fish, order Perciformes, family Lethrinidae, and the genus Lethrinus Cuvier. Distributed from the east coast of Africa in the Indian Ocean to the islands in the middle of the Pacific Ocean. It is produced in the Xisha Islands and Hainan Island in China. It is a warm-water bottom fish with a body length of 150-450mm. It is one of the important economic fish caught in the southern ocean of my country. Its economic value In recent years, it has become one of the important fish for cage culture in Guangdong and the South China Sea. However, the number and scale of culture are greatly limited because the seedlings rely on natural fishing. Contents of the invention [0003] In view of this, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/10A23K10/22A23K20/163A23K20/174A23K50/80
CPCA23K10/22A23K20/163A23K20/174A23K50/80A01K61/10Y02A40/81
Inventor 蔡四川蔡镇辉蔡春有蔡有森黄春仁蔡建顺蔡惠明蔡金泉
Owner HAINAN CHENHAI AQUATIC CO LTD
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