Seedling device and method for preventing mass mortality of larval haliotis diversicolor

Abstract

The invention discloses a seedling device and method for preventing mass mortality of larval haliotis diversicolor. The seedling device comprises attachment plates, a breeding pool, filter sea water, nutritive salts and a shading net; the attachment plates are used for breeding and attaching benthic diatoms and the larval haliotis diversicolor; the breeding pool is used for breeding the larval haliotis diversicolor; the filter sea water is arranged in the breeding pool and used for inoculating the benthic diatoms which are attached to the attachment plates which are arranged in the filter sea water; the nutritive salts are arranged in the filter sea water so as to promote the growth of the benthic diatoms; the shading net covers the breeding pool so as to adjust the growth rate of the benthic diatoms which are attached to the attachment plates. The seedling device is simple in structure, the seedling method is easy to operate, the larval haliotis diversicolor can climb onto the new attachment plate automatically after feeding benthic diatoms of the original attachment plate and continue feeding benthic diatoms of the new attachment plate so as to feed sufficient benthic diatoms and grow rapidly, and accordingly the larval haliotis diversicolor mass mortality caused by shortage or aging of bait which is arranged on the original attachment plate is avoided in the process of seedling and the survival rate of the larval haliotis diversicolor is improved.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a seedling raising device and a method thereof which can prevent young abalones from falling off the plate and dying. Background technique [0002] Variegated abalone ( Haliotis diversicolor ) is an important aquaculture species in southern China, and the large-scale cultivation of abalone seedlings is an important guarantee for the sustainable and stable development of my country's abalone aquaculture industry. In the process of factory breeding of variegated abalone, fertilized eggs undergo a short trocholarval stage and then metamorphose into vegetal larvae, which are inoculated with benthic diatoms on corrugated plates (called: attachment plates in production) Complete the process of attachment and metamorphosis. After metamorphosis, juvenile abalone continues to live and grow on the attachment plate, and feeds on the benthic diatoms on the attachment plate. Juvenile ab...

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a seedling raising device and a method thereof which can prevent young abalones from falling off the board and die in view of the above-mentioned deficiencies in the prior art. During the abalone attachment period, the death of young abalones due to the large consumption of benthic diatoms on the attachment plates or de-algae caused by de-boarding, thus significantly improving the survival rate and growth rate of young abalones

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