Descôteaux J P, Mihok S
J Wildl Dis. 1986 Jul;22(3):314-9. doi: 10.7589/0090-3558-22.3.314.
The demography and serology of a population of wild meadow voles (Microtus pennsylvanicus) were monitored from 1982 to 1984 near Pinawa, Manitoba, Canada. Serologic tests were performed on 486 samples to detect the presence of viral antibodies to 11 common murine viruses. Meadow voles showed evidence of infection with Theiler's encephalomyelitis, reovirus-type-3, ectromelia, lymphocytic choriomeningitis, adenovirus, and mouse hepatitis viruses. At times of good survival and breeding performance the population was nearly free of evidence of viral infection. During a period of severe mortality in the winter of 1982-1983, evidence of infection by Theiler's encephalomyelitis virus and reovirus-type-3 was obtained. A high prevalence of antibodies and high titers to these two viruses were characteristic of voles that were captured late in the decline in density in the spring of 1983. This association of mortality with a viral outbreak is consistent with the hypothesis that vole population declines are sometimes related to opportunistic pathogens present in the voles' biotic and social environment.
1982年至1984年期间，在加拿大曼尼托巴省皮纳瓦附近对一群野生草甸田鼠（Microtus pennsylvanicus）的人口统计学和血清学进行了监测。对486份样本进行了血清学检测，以检测针对11种常见鼠病毒的病毒抗体的存在。草甸田鼠显示出感染泰勒氏脑脊髓炎、呼肠孤病毒3型、脱脚病、淋巴细胞性脉络丛脑膜炎、腺病毒和小鼠肝炎病毒的证据。在生存和繁殖表现良好的时期，该种群几乎没有病毒感染的迹象。在1982 - 1983年冬季的一段严重死亡时期，获得了泰勒氏脑脊髓炎病毒和呼肠孤病毒3型感染的证据。对这两种病毒的高抗体流行率和高滴度是1983年春季密度下降后期捕获的田鼠的特征。这种死亡率与病毒爆发的关联与田鼠种群数量下降有时与田鼠生物和社会环境中存在的机会性病原体有关的假设一致。
