Control method for indoor early propagation of Perinereis aibuhitensis

Abstract

A control method for indoor early propagation of Perinereis aibuhitensis is characterized by including the sequential steps of 1, preparing a breeding cement pool; 2, selecting parents of Perinereis aibuhitensis; thirdly, managing ways of breeding outside cages and breeding density; 4, performing daily winter management; and 5, after temperature control, restoring natural water temperature, namely continuing temperature control 30-40 days after normal low-temperature period, and keeping the indoor temperature at about 25 DEG C so that mature heteronereis can be found in about one week. The method has the advantages the method is performed in indoor cement pools and insusceptible to seasons and tides; simultaneous propagation of a great amount of parents can be extended to mid-March, and juvenile cultivation can be arranged in the first half year designedly; through the control way of artificial heating, cultivation is 3 months ahead, and fertility rate and hatching rate are the same as those of Perinereis aibuhitensis calculated in normal seasons; and the method is suitable for industrial production of juvenile of Perinereis aibuhitensis.

Description

technical field [0001] The invention relates to a method for regulating the early breeding of clam worms, in particular to a method for regulating the early breeding of clam worms indoors. Background technique [0002] Nereis worm is a high-quality bait for fish, shrimp, crab, etc., and is rich in nutritional value. It is called "universal bait" and has extremely high economic value. At present, the CIF price in the Japanese market is as high as tens of thousands of dollars per ton, and it is also valuable in the Western European market, where the supply exceeds the demand. Perinereis aibuhitensis belongs to the phylum Annelidae, polychaetes, and Nereidae. It likes to live in burrows on the mud-sand beaches in the intertidal zone with calm seas and rich nutrition. The main constituent organisms of seabed habitats have important ecological value. [0003] The clam worm has the characteristics of large body size and high protein content (70%-80%). It is an important species ...

AI Technical Summary

Problems solved by technology

At present, seedling cultivation largely depends on naturally mature groups. In a specific season, the bodies of Heteresis worms from nature are harvested for breeding. The seasonality is strong, and it is controlled by the tide and is uncontrollable. It is very important for arranging production and large-scale seedling cultivation. unfavorable

[0004] At present, the common breeding method of Nereis didentate, whether it is fishing natural waters or artificially cultivating mature Nereis didentate, has a strong seasonality (July-September). Artificial breeding of nereis can only be carried out in the second half of the year

This leads to the inability to carry out seed cultivation in the first half of each year, and most of the earthen ponds are left idle, which wastes resources and greatly limits the large-scale development of artificial breeding of the double-toothed clamworm