Nuttallia olivacea larva large-scale breeding method

Abstract

The invention discloses a nuttallia olivacea larva large-scale breeding method, relates to the technical field of aquaculture, and particularly belongs to the nuttallia olivacea larva large-scale breeding method. The method is characterized by comprising the following steps of four-grade bait preparation, wherein a first-stage unicellular alga species starts to be cultivated from December to January in winter or 3-4 months before spawning of parent shellfish, second-stage alga species is prepared from February to March in spring, a three-stage alga solution is produced from March to May in spring, and large-scale unicellular bait is produced in a pond from April to August in spring and summer; parent shellfish collection and spawning; fertilized egg hatching; larva breeding. The method hasthe advantages that the method is not limited by natural conditions, the yield is high, and large-scale benefits are remarkable.

Description

technical field

[0001] The invention relates to the technical field of aquaculture, in particular to a method for large-scale seed breeding of purple blood clams. Background technique

[0002] Zicai blood clam is a kind of bivalve mollusk that lives in the low tide zone and subtidal zone of the near-shore intertidal zone. Due to its delicious and unique taste, thin shell and high meat yield, consumers have demanded Zicai blood clam in recent years. In addition, the discharge of coastal pollutants has destroyed its living environment and seriously affected the reproductive survival rate of Zicai blood clams; therefore, the survival number of Zicai blood clams has been declining. trend. At present, the artificial seedling breeding technology of Violet blood clam has been studied, but the supply of single-celled algae is extremely unstable, the algae cultivation pool is frequently polluted by protozoa, and the bait is seriously insufficient after the larvae lay down. In additi...