All artificial culture of giant salamander has been successful in Shanghai

Introduction: after 8 years of cooperation and research, new page 1 Chinese Academy of Fishery Sciences, Shanghai Fisheries University and other scientific research institutions have realized the full artificial cultivation of the rare animal giant salamander Professor Lin Haoran, academician of the Chinese Academy of engineering and professor of the school of life sciences of Sun Yat sen University, recently announced on behalf of the expert identification group that this subject has created a new situation of all artificial reproduction of giant salamander, and its achievements are at the leading level of similar international research Giant salamander, commonly known as giant salamander, is a rare species that lived and bred in the same era as dinosaurs 300 million years ago It is now a class II wild protected animal in China The biggest problem in the reproduction of giant salamander is that the gonad development of female and male is not synchronous When the female giant salamander lays eggs, the male does not have mature sperm; after one month, the sperm of male matures, and the ovary of female giant salamander has degenerated Therefore, the reproduction rate of giant salamander in nature is very low, coupled with excessive killing and ecological damage, the stock of giant salamander is rapidly declining Statistics show that in 2000, the number of Chinese giant salamanders has decreased to 50000 Biz said that since 1995, Shanghai Fisheries University, Chinese Academy of Fishery Sciences and relevant enterprises have formed a research group Through years of efforts, it has not only achieved a breakthrough in the second generation of giant salamander's full-scale artificial breeding, but also achieved many innovations in the full-scale artificial breeding technology Through the adjustment of water temperature and bait, the research team solved the problem of gonad development asynchrony of Andrias davidianus, and found out the best time to induce labor, and configured the breeding fluid, so that the fertilization rate of Andrias davidianus was 95.9%, the hatchability rate was 15%, and the survival rate of its parents was 100% Experts believe that the success of the whole artificial breeding technology and industrial breeding of giant salamander has laid a foundation for large-scale breeding, and plays an inestimable role in the realization of the artificial ecological protection, population breeding and rational development and utilization of giant salamander BiZ