Early propagation method for hyriopsis cumingii seeds

Abstract

The invention discloses an early propagation method for hyriopsis cumingii seeds in methods for breeding hyriopsis cumingii. By the early propagation method for the hyriopsis cumingii seeds, the technology for early propagation of the hyriopsis cumingii is successfully developed for the first time in China, parent hyriopsis cumingii and seeds thereof are originally artificially bred in a greenhouse, early maturity of the gonads of the parent hyriopsis cumingii and quick growth of the seeds in early spring are promoted to succeed by adopting the technology of water temperature regulation and directional breeding of biological bait, and 80 percent of hyriopsis cumingii can reach the bead plugging specification; and the early propagation method for the hyriopsis cumingii seeds is technically characterized by mainly comprising the steps of selecting the parent hyriopsis cumingii, breeding the parent hyriopsis cumingii, collecting seedlings, breeding the hyriopsis cumingii seedlings at the parasitic stage, breeding juveniles after the seedlings are removed, breeding young hyriopsis cumingii and the like.

Description

technical field [0001] The present invention relates to a method for cultivating the triangular sail mussel, in particular to a method for early propagation of the seedling of the triangular sail mussel. Background technique [0002] Commonly known as river mussels, pearl mussels, and triangle mussels, triangular mussels are a class of freshwater bivalve molluscs, belonging to the class Petalbranchia, order Euphyllobranchia, the family Pearl Mussels, and the genus Sail Mussels. They are widely distributed in Hunan, Hubei, Anhui, Jiangsu, Zhejiang, Jiangxi and other provinces, especially Poyang Lake and other large and medium-sized lakes are more distributed and have higher yields. They are excellent freshwater pearl mussels unique to China. Clams in natural waters or cultured ponds generally begin to breed in early and mid-April, and the peak breeding period is from May to June. In order to raise seedlings in advance, most mussel farmers select dozens of mature larvae from t...

AI Technical Summary

Problems solved by technology

Clams in natural waters or cultured ponds generally begin to breed in early and mid-April, and the peak breeding period is from May to June. In order to raise seedlings in advance, most mussel farmers select dozens of mature larvae from tens of thousands of mussels in the pond. This traditional seedling raising method has many disadvantages, such as: the selected parent mussels are not the triangle sail mussels with good pearl breeding performance, but the triangle sail mussels with mature and early larvae; the workload is large and the consumption Time-consuming and labor-intensive; it will cause great damage to the Pearl River Delta mussel; it is easily affected by climate conditions, the emergence rate is low, and the seed production stability is poor, etc.

Due to the above-mentioned reasons, the quality and quantity of seedlings for early multiplication are low, and the production of seedlings is still mainly concentrated in the early May of sending seedlings. The triangular sail mussels produced by sending seedlings in May will be raised until November of that year, and most of the small mussels cannot reach Cutting specifications, you can only wait for next spring or even autumn cuttings, which will greatly delay the production of bead breeding, shorten the bead breeding cycle, and increase the cost and risk of breeding

Images