Egg bag collecting and hatching devices for industrial seedling culture of Rapana venosa and use method of devices

Abstract

The invention belongs to the production field of industrial seedling culture for aquaculture and particularly relates to egg bag collecting and hatching devices for industrial seedling culture of Rapana venosa and a use method of the devices. The egg bag collecting device comprises attachment devices and a floating frame, the hatching device comprises floating balls, supports and attachment devices, the floating balls are connected to tops of the supports, and the attachment devices and the supports are connected through tail hooks; during egg bag collection, the attachment devices are fixed on the inner wall of the floating frame for culturing parents of Rapana venosa, the attachment devices on the top layer are kept underwater, and the attachment devices with egg bags attached are replaced with new attachment devices with no egg bags attached and then taken out of the floating frame after egg collection; during egg bag hatching, the attachment devices with egg bags attached are hung on the tail hooks of the supports and suspended in a hatching tank for egg bag hatching by the aid of the supports and the floating balls. By means of the devices, the egg bags of the Rapana venosa can be collected conveniently and efficiently and prevented from being damaged due to manual separation of the egg bags, so that the hatching process of the egg bags is finished smoothly.

Description

technical field [0001] The invention belongs to the field of industrialized seedling production in aquaculture, in particular to an egg bag collection and hatching device for industrialized seedling rearing of red snails and a method for using the same. Background technique [0002] Rapanavenosa, commonly known as "spin snails" and "conch snails", belongs to the phylum Molluscs, Gastropoda, Osteuridae, and the genus Rapanavenosa. The adult shell height can reach 7 to 12 cm. It is distributed in the Bohai Sea and the Yellow Sea in my country. . Its feet are particularly hypertrophic, delicious, and nutritious, and it is very popular with people and has high economic value. In recent years, with the decline of offshore resources and the popularity of domestic and foreign markets, the economic value of the red snail has been continuously improved, and the current live price is 20 to 40 yuan / kg. [0003] At present, there is a huge market demand for red snails along the coasts ...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide an egg bag collection and hatching device for industrialized seedling cultivation of red snails and its use method, which solves the problem of efficient and non-destructive collection and incubation of the egg bags when the red snails lay eggs

Images