A kind of artificial induction method of Delicious Cosmoptera

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...