Egg-carrying crab incubation device and application thereof

Abstract

The invention discloses an egg-carrying crab incubation device and application thereof. The device comprises a net cage and a shading oxygenation box, wherein the net cage is arranged in the shading oxygenation box; the net cage comprises a stainless steel frame, a purse net and meshes; the surface of the stainless steel frame is wrapped with the purse net; the meshes are arranged inside the stainless steel frame; the stainless steel frame is partitioned into various units by the meshes; the shading oxygenation box is of a closed structure and comprises a top cover, a shading frame and a bottom; a water inlet is formed in a position, which is close to the top cover, of the shading frame; a siphon tube is arranged at the junction of the shading frame and the bottom; and a water outlet and oxygenating micro-pores are formed in the bottom. According to the device disclosed by the invention, the 'turning-back' phenomenon in the process of incubating egg-carrying crabs is avoided, the survival rate of the egg-carrying crabs is increased, and economic losses in the practice process are reduced; the requirements of the egg-carrying crabs on light rays, water quality and dissolved oxygen are met, and the comfort level of the egg-carrying crabs is improved; the survival state of the egg-carrying crabs can be observed and monitored in real time, and accidents are reduced; and the deviceis portable and detachable.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and relates to the breeding technology of Chinese mitten crabs, in particular to an oviposit crab hatching device and its application. Background technique [0002] Oviposit crab, as the most important link in the life cycle of Chinese mitten crab to complete reproduction, its importance is self-evident. The mating season of Chinese mitten crabs is generally in December every year. The male and female crabs are stimulated by seawater to mate. The female crabs form oviposit crabs, and the fertilized eggs are concentrated in the belly button and are raised high. The traditional seedling breeding method will place the brood crabs in earthen ponds for hatching and management. However, the following problems are prone to occur: 1) Since the oviposit crabs are placed in the earthen pond, the physiological state of the oviposit crabs cannot be observed in real time; In practice, it is found that t...

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Problems solved by technology

However, the following problems are prone to occur: 1) Since the oviposit crabs are placed in the earthen pond, the physiological state of the oviposit crabs cannot be observed in real time; In practice, it is found that the phenomenon of "turning over" will occur, and the oviposit crab cannot turn over by itself, often resulting in death, which not only causes water pollution, but also causes huge economic losses; 3) oviposit crabs have a relatively high demand for dissolved oxygen in water. High, and the traditional aeration device cannot make the dissolved oxygen in the water evenly distributed, so the oviposit crabs often die due to lack of oxygen in the earthen ponds

However, there has been no research on the incubation device for the habit of oviposit crabs, especially the phenomenon of "turning over" that oviposit crabs tend to appear has not received attention

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