APODEMUS-SYLVATICUS INFECTED WITH HELIGMOSOMOIDES-POLYGYRUS (NEMATODA) IN AN ARABLE ECOSYSTEM - EPIDEMIOLOGY AND EFFECTS OF INFECTION ON THE MOVEMENTS OF MALE-MICE
APODEMUS-SYLVATICUS INFECTED WITH HELIGMOSOMOIDES-POLYGYRUS (NEMATODA) IN AN ARABLE ECOSYSTEM - EPIDEMIOLOGY AND EFFECTS OF INFECTION ON THE MOVEMENTS OF MALE-MICE
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DOI：
10.1111/j.1469-7998.1994.tb04869.x
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发表时间：
1994-12-01
影响因子：
2
通讯作者：
TODD, IA
中科院分区：
文献类型：
--
作者：
BROWN, ED;MACDONALD, DW;TODD, IA
我们研究了可耕种生态系统中木鼠（Apodemus sylvaticus）中 Heligmosomoides polygyrus（线虫）的流行病学，并通过操纵蠕虫负荷来研究感染与雄性小鼠运动模式之间的关联。方法包括活体诱捕小鼠、通过粪便分析估计蠕虫负荷、施用驱虫药或水（作为对照）以及对选定动物进行无线电跟踪。Heligmosomoides polygyrus 表现出过度分散的分布模式，雄性和较重小鼠的患病率往往较高。在整个人群和成人中，患病率和强度在春季达到顶峰，在秋季下降。与林地相比，耕地生态系统的这种季节性可能是由于农业实践的直接和间接影响而出现的。为了调查感染和运动之间的联系，无线电追踪的小鼠被分为“未感染”或“感染”；小鼠也被分类为“对照”或“给药”。 “感染/给药”和“感染/对照”之间的运动参数没有显着差异，可能是因为治疗频率不够高。两类“感染”小鼠的移动速度都明显快于“未感染”小鼠，“感染/给药”小鼠的移动速度明显比“未感染”小鼠远。与“未感染”小鼠相比，“感染/给药”和“感染/对照”小鼠的移动时间百分比也更大，并且活动范围面积更大。观察到的运动差异可能是小鼠行为影响其寄生虫负载或寄生虫操纵其宿主的结果。
We studied the epidemiology of Heligmosomoides polygyrus (Nematoda) in the wood mouse (Apodemus sylvaticus) in an arable ecosystem, and investigated any association between infection and the movement patterns of male mice by manipulating worm burdens. Methods included the live-trapping of mice, estimation of worm burdens by faecal analysis, administration of either an anthelminthic or water (as a control) and the radio-tracking of selected animals.Heligmosomoides polygyrus showed an overdispersed distribution pattern, with prevalence tending to be higher in males and heavier mice. Prevalence and intensity peaked in spring and declined in autumn both in the entire population and in adults. This seasonality in the arable ecosystem in comparison to woodland may arise due to the direct and indirect impact of agricultural practice.To investigate the link between infection and movements, radio-tracked mice were classed as either 'Uninfected' or 'Infected'; mice were also classed as either 'Control' or 'Dosed'. There were no significant differences in movement parameters between 'Infected/Dosed' and 'Infected/ Control', possibly because treatment was not administered sufficiently frequently. Both 'Infected' classes of mice moved significantly faster than 'Uninfected' ones, and 'Infected/ Dosed' mice moved significantly further than 'Uninfected' ones. The percentage of time spent moving was also greater, and the home range area was larger, for 'Infected/Dosed' and 'Infected/ Control' than for 'Uninfected' mice. The observed differences in movement may have been the result of either the behaviour of mice influencing their parasite load or the parasite manipulating its host.