Hosseini Parviez R, Dhondt André A, Dobson Andy P
Department of Ecology and Evolutionary Biology, Princeton University, Princeton, New Jersey 08544-1003, USA.
Ecology. 2006 Dec;87(12):3037-46. doi: 10.1890/0012-9658(2006)87[3037:ssoaei]2.0.co;2.
In this paper we quantify the rate of spread of the newly emerged pathogen Mycoplasma gallisepticum of the House Finch, Carpodacus mexicanus, in its introduced range. We compare and contrast the rapid, yet decelerating, rate of spread of the pathogen with the slower, yet accelerating rate of spread of the introduced host. Comparing the rate of spread of this pathogen to pathogens in terrestrial mammalian hosts, we see that elevation and factors relating to host abundance restrict disease spread, rather than finding any major effects of discrete barriers or anthropogenic movement. We examine the role of seasonality in the rate of spread, finding that the rate and direction of disease spread relates more to seasonality in host movement than to seasonality in disease prevalence. We conclude that asymptomatic carriers are major transmitters of Mycoplasma gallisepticum into novel locations, a finding which may also be true for many other diseases, such as West Nile Virus and avian influenza.
在本文中，我们对新出现的家朱雀（Carpodacus mexicanus）病原体鸡败血支原体在其引入范围内的传播速度进行了量化。我们将病原体迅速但减速的传播速度与引入宿主较慢但加速的传播速度进行了比较和对比。将这种病原体的传播速度与陆生哺乳动物宿主中的病原体传播速度相比较，我们发现海拔高度和与宿主数量有关的因素限制了疾病传播，而非发现离散屏障或人为移动有任何重大影响。我们研究了季节性在传播速度中的作用，发现疾病传播的速度和方向与宿主移动的季节性关系更大，而非与疾病流行的季节性关系更大。我们得出结论，无症状携带者是鸡败血支原体传播到新地点的主要传播者，这一发现可能对许多其他疾病（如西尼罗河病毒和禽流感）也同样适用。
