Method for artificially culturing corbicula fluminea

Abstract

The invention discloses a method for artificially culturing corbicula fluminea which has high survival rate and favorable stress resistance. The method comprises the following steps of: utilizing a corbicula fluminea individual with sexual maturity as a parent, artificially stimulating the corbicula fluminea individual until fertilized eggs are ovulated; collecting the fertilized eggs, placing the fertilized eggs into a hatching pond which has the water temperature of 20-22 DEG C, the pH of 7.3-7.8 and the salinity of 0, aerating and hatching the fertilized eggs, wherein the hatching density is 30-50 per ml; collecting D-shaped larvae, and culturing the D-shaped larvae, wherein the culturing density is 2-3 per ml, the culturing water is the filtered river water, the temperature is 20-22 DEG C, the pH is 7.3-7.8, the salinity is 0, the water is changed once or twice per day, and the water-changing amount is 1 / 3-1 / 2; feeding fresh water chlamydomonas baits with the density of 5-8 cell*103 per ml; when the D-shaped larvae grow as long as 190-210 mums, increasing the feeding amount to 3-5*104cell per ml, and culturing the D-shaped larvae to metamorphosis larvae; and culturing the metamorphosis larvae with the feeding amount of 5-8*104cell per ml until young conches grow to 1-2mm.

Description

Technical field: [0001] The invention relates to an artificial seedling raising technique for freshwater shellfish, in particular to an artificial seedling raising method for clams with high survival rate and good stress resistance. Background technique: [0002] River clams (Corbicula fluminea), also known as sand clams, clams, golden clams, flat snails, yellow clams, etc., are widely distributed in rivers, lakes, ditches and other freshwater waters throughout my country, and are an important part of freshwater biological communities. River clam is not only delicious, but also has high nutritional value. Each gram of river clam meat contains 5.3% protein, 2% fat, 7% sugar, 85% water, and 0.7% ash. In addition, it also contains a certain amount of vitamins and riboflavin. According to the "Compendium of Materia Medica": "Clam meat can lower the temperature and facilitate urination." According to modern medical books and other records: river clam meat has the effect of clear...

AI Technical Summary

Problems solved by technology

The existing method of artificial breeding of river clams is to harvest small river clam seedlings during the breeding season and then carry out artificial cultivation. Overharvesting and environmental degradation have led to the depletion of natural seed resources, restricting the artificial breeding of river clams development of

However, so far there is no research report on artificial seed breeding