论文部分内容阅读
1955年,在牙买加西部流行一种椰树致死性黄化病(LY),现已蔓延到热带与亚热带美洲和西非。此病还侵染其它约30种棕榈科植物。致死性黄化病是由类菌质体引起的,传病媒介是麦蜡蝉。在牙买加和美国佛罗里达感病区,麦蜡蝉是寄生于椰树上的数量最多的昆虫。在佛罗里达,最不易感此病的棕榈科植物上也有蜡蝉;该病害的地理分布与蜡蝉的地理分布是一致的,用杀虫剂防
In 1955, a feline coccidosis (LY) epidemic in western Jamaica has spread to tropical and sub-tropical Americas and West Africa. The disease also infects about 30 other palm plants. Fatal yellow disease is caused by the mycoplasma, the vector is wheat wax cicadas. In Jamaica and the Florida flu area of the United States, waxy cicada is the largest number of parasitic parasites on coconuts. In Florida, waxy cicadas are also found on palms that are least susceptible to the disease; the geographical distribution of the disease is consistent with that of waxy caterpillars, with insecticide-resistant