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首页> 外文期刊>Journal of Parasitology >THE RELATIONSHIP BETWEEN BAYLISASCARIS PROCYONIS PREVALENCE AND RACCOON POPULATION STRUCTURE
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THE RELATIONSHIP BETWEEN BAYLISASCARIS PROCYONIS PREVALENCE AND RACCOON POPULATION STRUCTURE

机译：拟南芥子虫流行与浣熊种群结构的关系

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摘要

Parasite transmission is a dynamic process that can be affected by factors including host and parasite population dynamics. Raccoons (Procyon lotor) are the definitive host of Baylisascaris procyonis, an intestinal roundworm. Transmission of this parasite has been linked to raccoon behavior and human land-use patterns; however, we do not know the importance of host population structure. Therefore, the objective of this study was to determine the relationship between raccoon population attributes and prevalence of B. procyonis. We necropsied 307 trapped or road-killed raccoons collected during 2000–2006 from the Chicago area. In addition, we examined, via fecal samples (n = 433), the patterns of B. procyonis prevalence as they relate to population dynamics among 3 subpopulations within the larger study. Baylisascaris procyonis was seen in 39% of 307 necropsied raccoons. There were differences in prevalence as a function of host age and sex. Baylisascaris procyonis was observed in 18% of 433 fecal samples obtained from live-trapped raccoons, and there were differences according to age, but not by sex. We found that the host populations consistently differed in density across study areas, but were similar regarding sex and age structure. Differences in host density were associated with differences in prevalence, suggesting that possible differences between populations, as well as ecological differences in sites and raccoon behavior, may have influenced parasite prevalence.
机译：寄生虫传播是一个动态过程，受宿主和寄生虫种群动态等因素影响。浣熊（Procyon lotor）是肠道round虫Baylisascaris procyonis的最终宿主。这种寄生虫的传播与浣熊行为和人类土地利用方式有关。但是，我们不知道东道国人口结构的重要性。因此，本研究的目的是确定浣熊种群属性与proc procyonis患病率之间的关系。我们对2000年至2006年期间从芝加哥地区收集的307只被困或道路杀死的浣熊进行了尸检。此外，我们通过粪便样本（n = 433）检查了普罗旺斯氏杆菌的流行模式，因为它们与较大研究中3个亚群中的种群动态有关。在307例尸检浣熊中，有39％观察到了原发性Baylisascaris procyonis。患病率随宿主年龄和性别的不同而有所差异。从活捕获的浣熊中获得的433份粪便样本中有18％观察到了原发性Baylisascaris procyonis，并且根据年龄而存在差异，但没有性别差异。我们发现，各个研究区域的寄主人口密度始终存在差异，但性别和年龄结构却相似。寄主密度的差异与患病率的差异有关，这表明种群之间的可能差异以及场所和浣熊行为的生态差异可能已影响了寄生虫的流行。

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