Artificial seedling raising and field cultivation method of tylorrhynchus heterochaetus

Abstract

The invention discloses an artificial seedling raising and field cultivation method of tylorrhynchus heterochaetus, and belongs to the technical field of aquaculture. The method includes selecting female and male tylorrhynchus with the number ratio of 100: 3 as parents for artificial seedling raising, directly acquiring fertilized eggs through extrusion and burst, desalinating the fertilized eggs,puts the fertilized eggs into the field for incubation, and spraying shell powder during cultivation by controlling the seedling density of the tylorrhynchus in the field to be 450-550 pieces per square meter, so as to enable the tylorrhynchus to be cultivated in the field. The method fills in the blank of field cultivation of tylorrhynchus, the parent selection is simple and quick, larvae can bedirectly hatched in the field, phytoplankton and organic debris in the field can be ingested, baits are not required to be cast independently, so that the cultivation cost is greatly reduced, the symbiosis of the tylorrhynchus and cultivated plants in the field is realized, the utilization rate of the field can be improved, and the economic output value per unit area can be improved; and the method is simple, and is suitable for popularization among common farmers.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a method for artificially raising seedlings and field breeding of clam worms. Background technique [0002] Tylorrhynchus eterochaetus (Tylorrhynchus terochaetus), commonly known as grass insects, belongs to the phylum Annelida, Polychaetes, Migration order, Nereistidae, and the genus Tylorrhynchus eterochaetus. The living environment of grass worms is usually the coastal and estuary fields and shoal muddy sandy soil where salty and fresh water meet. There are 62 segments in the body, dioecious, heterozygous fertilization. The male and female worms have different body colors. The male body is mainly red with milky white in between, and the female body is turquoise or brownish green. Every autumn and winter, when the spring tide floods the paddy fields and shoals, the mature individuals climb out of the water and float to mate and reproduce. Mature individual gr...

AI Technical Summary

Problems solved by technology

However, the current research is mainly focused on the cultivation of grass insects under intensive conditions (artificial ponds) or tidal flats, and different breeding conditions will significantly affect the breeding effect of grass insects due to different factors such as environment and bait, and cannot be directly used. Or apply mechanically, so it is necessary to provide a method for cultivating grass worms in the field