|
China's inland waters rich in resources, therefore, the development of freshwater pearls is the only way for China's pearl industry. The spinnaker mussels main Freshwater Pearl Mussel, more research, but seriously affect the pearl farming mussels blast lagging behind of physiological lesions only in the blast, epidemiology, virus separation and identification There are fewer reported to completely prevent mussels blast virus mussels incidence of related genes and viral genes, the molecular level, to understand its pathogenesis, fundamentally up prevention mussels Plague. From the start to study the Dongting Lake District spinnaker mussels epidemiological pathogen bacteria and viruses. Bacterial aspects viruses mainly from the epidemiological study of the Dongting Lake area spinnaker mussels epidemiological investigation, the separation and identification of the pathogen, disease mussels pathological study of Dongting Lake District spinnaker mussels epidemiological bacterial pathogen; Purification and electron microscopy virus form of the virus, the size of the type of the study confirmed the virus viral factors and the electron microscope, the virus exists in the Dongting Lake area spinnaker mussels epidemiological pathogen such as shape, size, and so further drug prevention Triangle sail mussels blast to provide a theoretical basis; provide strong protection for the industrial development of the Dongting Lake area spinnaker mussels provide important theoretical basis for reasonable development and protection of the Dongting Lake area spinnaker mussels Germplasm Resources. Spinnaker epidemic has been the limiting factor in the production of China's freshwater pearls, mussels from pathogenic bacteria and viruses, a spinnaker and mussels epidemic pathogens Dongting Lake area to explore. Sick spinnaker mussels pathogenic microorganisms separation, purification and biochemical identification, mild Aeromonas, Pseudomonas alcaligenes, Serratia marcescens, Klebsiella oxytoca ornithine solution Craven the primary bacterium, Burkholderia cepacia six kinds of bacteria, by the challenge, susceptibility testing, that mild Aeromonas and Pseudomonas alcaligenes as pathogens; susceptibility test results be able to find out this six kinds of bacteria are sensitive to drugs: ceftazidime, levofloxacin, and meropenem. Therefore, you can make use of these three drugs to to spinnaker mussels febrile disease prevention. Transmission electron microscope at the same time the virus particles observed were spherical or elliptical shape, with a diameter 40-290nm, the surface covered with the protrusion of the slender shape, a small amount of virus can be resolved a variable number, a diameter of about 20nm dense \Therefore, the combination of the epidemiological investigation, immersion and injection experiments pathogens and histopathological observation and virus electron microscope can determine the initial Dongting Lake area spinnaker mussels blast: April 2005 - July 2007 Primary The pathogen is embedded sand-like virus, and mild Aeromonas, Pseudomonas alcaligenes secondary pathogens.
|