A kind of device and method suitable for snail breeding and egg collection and hatching

Abstract

The invention provides a device and method suitable for snail-parent cultivation and egg collection and hatching. The main body of the device is a box-type structure, which is formed by buckling two casings together, and a net is arranged around the casings. The grid-shaped small holes are provided with multiple layers of thin rods in the casing, each layer is provided with several thin rods, and a corrugated plate is placed on each layer of thin rods. Using this device, the snails are first pretreated, and the snails are placed on the corrugated plate in the device. The oocysts produced by the snails are mainly attached to the corrugated plate, and the bases of a plurality of oocysts are connected to form egg clusters. When the upper egg clusters occupy a certain area, take out the snails in the device, and move the device and the corrugated plate together with the oocysts into the hatching tank for hatching; during the hatching period, continuously micro-aerate and change the water every day. The invention saves a lot of manpower and financial resources for the breeding of gastropod seedlings, and achieves the purpose of good snail parent cultivation, oocyst collection and efficient hatching. The device and method are simple and convenient, and are convenient for large-scale popularization and application.

Description

technical field [0001] The invention relates to a device and method for cultivating snail parents and collecting eggs for hatching, belonging to the field of aquaculture. Background technique [0002] wart lychee snail ( Thais clavigera Kuster), commonly known as "spicy snail" or "bitter snail", is distributed on the rocks in the middle and lower regions of the intertidal zone along the north and south coasts of my country. The height of the adult shell of Lychee snail is 30~45mm, the taste is delicious, and it is very popular among consumers. At present, due to over-harvesting, resources are almost scarce, and it is urgent to restore resources through artificial proliferation. In the process of implementing resource proliferation, it is first necessary to solve the problem of seed supply. Artificial breeding is an important way of seed supply. During the breeding process, after mating, the female snails will produce oocysts and adhere to the substrate (ie, the attachme...

AI Technical Summary

Problems solved by technology

During our experiment and production process, we found that equipment such as stones, cement boards and tiles are relatively bulky, which is not conducive to operation; the water permeability of the screen is good, but the material is soft, which is not conducive to the attachment of the oocyst gelatinous base. The attached oocysts often have the disadvantage that the base is detached from the attachment base, causing the oocysts to become red and die

The material of the corrugated board is transparent and easy to observe, and its lightness is conducive to operation and management, but the single-layer corrugated board is not conducive to the comprehensive utilization of water space

[0004] In addition, the above-mentioned attachment bases are all in an open state during use, so that the gastropod parent snails often escape to the outside of the attachment base, which brings a lot of inconvenience to the operation of changing the pool

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