Method for three-dimensional and artificial seedlings cultivation of perinereis aibuhitensis

Abstract

The invention discloses a method for the three-dimensional and artificial seedlings cultivation of the perinereis aibuhitensis, which mainly comprises the steps of: (1) fishing and disinfecting the heteronereis; (2) laying eggs, hatching and cultivating the planktonic larva; (3) three-dimensionally cultivating the benthic larvae; and (4) seedling emerging. The key measures comprise the steps of: putting four setiger intermediate-later stage nectochaete into a polyethylene water tank for the three-dimensional cultivation, cultivating by flowing water, and properly mixing the single-cell algae, the EM (effective microorganisms) bacterium with various artificial baits. After the measures are used, the density of the larvae is reduced, the mutual massacre among the individuals is reduced, the nutritional requirement of each-stage larva and the good and stable water quality environment are guaranteed, the survival rate of the larva is greatly improved, the breeding rate from the fertilized ovum to the sand silkworm seedling with the length of 1cm reaches at 42.3%, and the seedling yield per unit area is improved at 11.4*104 numbers / m<2>, so that the survival rate, the breeding rate and the seedling yield per unit area are greatly improved compared with the existing seedlings cultivation mode. The method is convenient to operate, can prevent the seedlings from being damaged caused by sand flushing and seedling driving, and is good for the long-distance transporting and the planting of the seedlings.

Description

technical field [0001] The invention relates to a method for three-dimensional artificial seedling cultivation of clam worms, belonging to the technical field of aquatic seed breeding. Background technique [0002] Perinereis aibuhitensis belongs to Nereididae (Nereididae) in zoological classification, Perinereis (Perinereis), commonly known as sea centipede, sea leech, etc., is mainly distributed in my country and is one of more than 80 species in China. The clamworm has the largest amount of biological resources. It is distributed in the middle and high tide beaches from south to north in my country's coastal areas. It is the main representative and dominant species of polychaetes in the intertidal zone, and it is also the most important source of artificial breeding and export earnings in my country. type. The clam worm is rich in nutrition, the crude protein content in the dry product is more than 50%, the highest can reach more than 65%, and it is rich in polyunsaturated...

AI Technical Summary

Problems solved by technology

The existing seedling breeding mode has a low breeding rate from fertilized eggs to seedlings with a body length of 1 cm, and the cost is high and the seedling yield is low