Studies on the species of alveolar Echinococcus in northward Daxingan Mountains, Inner Mongolia, China. II. Echinococcus sibiricensis Rausch et Schiller, 1954

According to the view of many workers, Echinococcus sibiricensis Rausch et Schiller, 1954 is only a geographical strain or subspecies of Europe Echinococcus multilocularis Leuckart, 1863 (Vogel, 1957; Skrjabin and Abuladze, 1964; Kumaratilake and Thompson, 1982 and Miyazaki, 1991; etc.). However, in 1985-2002,s of the present study have carried out the investigations on the epidemiology of alveolar Echinococcus in Hulunbeier Pasture of northward Daxingan Mountains of Inner Mongolia, China, and the developments of three species of alveolar Echinococcus of Hulunbeier in naturally infected and experimentally infected rodents. It was found that Echinococcus sibiricensis occurred together with Russia Echinococcus multilocularis (Abuladze, 1960) and european Echinococcus multilocularis Leuckart, 1863 in Hulunbeier Pasture. In the same endemic area, the adult worms of these three species of cestodes always lived together in the same inhabitation,that is intestine of their final host sand foxes, Vulpes corsac; and E. sibiricensis possessed different characteristics from europe an Echinococcus multilocularis Leuckart, 1863 and Russia Echinococcus multilocularis (Abuladze, 1960) on uterus structure of adult and metacestode development pattern in experimentally infected rodents and naturally infected voles. The voles, Microtus brandti, were found to be the natural intermediate host of Echinococcus sibiricensis, Russia E. multilocularis and Alveolaris hulunbeierensis Tang et al, 2001.