Large scale production of triploid abalone in China

Introduction: Recently, we learned from Dalian Fisheries College of Liaoning Province that there is a new breakthrough in the research of abalone breeding aiming at improving the survival rate and growth speed of abalone In China, abalone has been cultured and increased since the 1970s, but in recent years, due to inbreeding, the quality of abalone has declined and disease has occurred frequently, especially after stripping, a large number of deaths have occurred Since 1997, the research group headed by Professor Wang Zichen, an expert in mariculture, has carried out the "Research on polyploid sports species of abalone" listed in the 819 theme of the National 863 plan, carried out the high-efficiency technology research on polyploid drug induction pilot production of abalone, and established a set of operable system suitable for large-scale production At present, the world has taken the lead in the large-scale production of triploid abalone species By the end of 2000, 40 billion triploid abalone seedlings had been produced, and the triploid rate reached 67% The large-scale production of triploid abalone had been realized for the first time in the world Because the triploid of abalone has the characteristics of sterility and low fertility, the energy of the growth of somatic cells is relatively increased, the breeding characters are improved, the stress resistance and disease resistance of abalone are enhanced, and the growth speed is increased The results showed that the growth rate and survival rate of triploid were significantly higher than that of diploid The survival rate of triploid treated juvenile abalone was 1 times higher than that of diploid The shell width, shell length and weight of triploid were 24.8%, 19.1% and 69.4% higher than that of diploid respectively Not long ago, the subject passed the acceptance of relevant experts Experts believe that the research has reached the international advanced level in general The successful breeding and large-scale production of triploid abalone seedlings will play an important role in reviving abalone breeding industry which has been seriously hit by diseases.