Method for increasing industrial breeding yield of tegillarca granosa

Abstract

The invention relates to a method for increasing an industrial breeding yield of tegillarca granosa by acid treatment. Particularly, when a pool is turned over during a floating stage of the tegillarca granosa, hydrochloric acid with a certain concentration is added for treatment, and the vast majority of harmful zooplankton is removed, so that an adhesive rate of tegillarca granosa seedlings is increased; when the pool is turned over during an adhesive stage, hydrochloric acid with a certain concentration is added for the treatment, and parasite and other dirt adhered to a shell are removed, so that a growth rate of the larval tegillarca granosa is increased; and therefore, the industrial breeding yield of the tegillarca granosa is increased greatly.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and relates to a method for improving the output of cockles industrialized seedlings by using acid treatment, specifically, when the pool is turned over at a certain stage of the cockles industrialized seedlings, hydrochloric acid is used to remove harmful zooplankton and Parasitic protozoan, in order to reach the method for improving the yield of cockle seedlings. Background technique [0002] Mud clam (Tegillarca granosa), belonging to the phylum Molluscs, class Bivalva, order Dendonta, family Cranaceae, genus Cranosa, is a traditional cultured shellfish in the southeast coast of China. Since the 1990s, due to the deteriorating offshore environment, the natural seed resources of mud cockles have become increasingly scarce, and now the seeds needed for mud cockle farming are entirely from artificial cultivation. [0003] The industrial artificial breeding of cockles is mainly divided into t...

AI Technical Summary

Problems solved by technology

In the conventional nursery process of mud cockles today, the only way to remove harmful zooplankton in the water body is to change the water or turn over the pond, but these routine operations can only filter out zooplankton whose individual size is smaller than cockle larvae. The zooplankton of the Brachion rotifers, whose individual size is close to or even larger than the planktonic larvae of mud cockles, cannot be filtered out by conventional operations

After the cockles attach, due to the rich content of organic matter in the water body, many parasitic protozoa such as polycontractors, bell worms, nematodes, etc. often adhere to the shells of the cockles, and their large-scale reproduction directly affects the cockles. The feeding and activities of the seedlings cause the cockles to grow slowly, and in severe cases, the seedlings will die. However, at present, the normal cleaning of the pool cannot effectively remove these parasites attached to the shells of the cockles.