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Phascolosoma esculenta artificial spawning induction method

A technology for artificial induction of labor and sclerozoites, which is applied in fish farming, application, climate change adaptation, etc., can solve the problems of difficulty in obtaining better induction of labor, high deformity rate of fertilized eggs, and low survival rate of parental bodies, and achieves increased production. The effect of large parent utilization rate, improving survival rate, and avoiding a large number of deformed fertilized eggs

Active Publication Date: 2017-09-12
广西海洋研究所有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method for artificially inducing labor of A. californica, which solves the problems of low parental survival rate in the process of artificially inducing labor for A. californica, difficulty in obtaining better effect of inducing labor and high deformity rate of fertilized eggs by using traditional shade-drying stimulation methods. , avoiding the waste of the parent body spraying sperm and eggs under dry conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] On August 10, 2015, artificially induced labor was carried out on the wild Derma spp. parents collected from the mangrove forest in the first work area of ​​the Beihai Zhulin Salt Field. The specific implementation steps are as follows:

[0024] (1) Preparation of the oxytocin pool:

[0025] The oxytocin pool is an indoor cement pool with a size of 5.3 x 3.5 x 1.2 meters. A layer of net curtain with a light transmittance of 50% is drawn above the oxytocin pool to avoid direct sunlight. The air stones are evenly distributed in the pool to keep the dissolved oxygen in the seawater above 5mg / L. Prepare a mesh basket with a specification of 1.2×0.6×0.2 meters, with a mesh size of 60 meshes, so that unfertilized eggs and fertilized eggs can follow the water flow through the mesh basket and spread all over the pool without allowing the parent body to drill into the mesh stuck, resulting in the death of the parent.

[0026] (2) Select parent:

[0027] The body weight of th...

Embodiment 2

[0037] On July 16, 2016, the wild broodstock of the Xiajiabang mangrove forest in Jiangping Town, Fangchenggang was collected, and artificial induction was carried out. The specific implementation steps are as follows:

[0038] (1) Preparation of the oxytocin pool:

[0039] The oxytocin pool is an indoor cement pool with a size of 5.3 x 3.5 x 1.2 meters. A layer of net curtain with a light transmittance of 75% is drawn above the oxytocin pool to avoid direct sunlight. The air stones are evenly distributed in the pool to keep the dissolved oxygen in the seawater above 5mg / L. Prepare a mesh basket with a size of 1.2×0.6×0.2 meters and a mesh size of 150 meshes, so that unfertilized eggs and fertilized eggs can follow the water flow through the mesh basket and spread all over the pool without allowing the parent body to drill into the mesh stuck, resulting in the death of the parent.

[0040] (2) Select parent:

[0041] The body weight of the parents was 1.8-6.5g, with an avera...

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PUM

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Abstract

The invention discloses a phascolosoma esculenta artificial spawning induction method. The phascolosoma esculenta is a marine breeding species of good economic efficiency, at the moment the fry are all from natural resources, on the market no economic units or manufacturers are conducting the cultivation or selling artificial fry. Artificial spawning is conducted on the phascolosoma esculenta by adopting the following measures: 1, preparation of spawning pools, 2, selection of brood stock, 3, cleaning, 4, artificial spawning, 5, second-time spawning after drying in the shade, and 6, collection of eggs. According to the phascolosoma esculenta artificial spawning induction method, multiple-time spawning of brood stock in batches is achieved, on average per kilogram brood stock can breed eggs more than 1 million, the hatching rate of fertilized eggs is 85%-95%, the survival rate of the brood stock is up to 90% or above. The spawning induction method does not cause a waste of fertilized eggs, nor cause damage to the brood stock due to stimulation of long-time drying in shade, the survival rate of brood stock is improved, the utilization rate of the brood stock is increased, cost of fry rearing is saved, and a foundation is provided for industrialized artificial breeding of phascolosoma esculenta.

Description

technical field [0001] What the present invention relates to is a kind of Derma codica ( Phascolosoma esculenta ), which belongs to the technical field of aquaculture. Background technique [0002] Phascolosoma esculenta, commonly known as "Haiding" and "Garlic", belongs to the Phylum Astrozoa, class Phascolosoma, and genus Phascolosoma, and is widely distributed in Zhejiang, Fujian, Guangdong, and Guangxi , Hainan and Taiwan provinces. In the past ten years, Fujian, Zhejiang and other places have begun to breed Derma codica, and the economic benefits are good. But the seedlings all come from natural resources, and there is no unit or manufacturer in the market to cultivate or sell artificial seedlings. The first step in artificial breeding is to obtain a large number of high-quality fertilized eggs. However, the skin of Derma spp. is thick, and the male and female individuals are similar in shape. It is difficult to distinguish male and female from the appearance, and wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCA01K61/00Y02A40/81
Inventor 曾梦清蒋艳游出超刘海娟彭慧婧
Owner 广西海洋研究所有限责任公司
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