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首页> 外文期刊>Journal of Parasitology >SPATIAL VARIATION OF HAEMOSPORIDIAN PARASITE INFECTION IN AFRICAN RAINFOREST BIRD SPECIES
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SPATIAL VARIATION OF HAEMOSPORIDIAN PARASITE INFECTION IN AFRICAN RAINFOREST BIRD SPECIES

机译：非洲Rainrest鸟物种中嗜血性寄生虫感染的空间变化

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Spatial heterogeneity influences the distribution, prevalence, and diversity of haemosporidian parasites. Previous studies have found complex patterns of prevalence with respect to habitat characteristics and parasite genotype, and their interactions, but there is little information regarding how parasitemia intensity and the prevalence of co-infections may vary in space. Here, using both molecular methods and microscopy, we report an analysis of the variation of parasitemia intensity and co-infections of avian haemosporidian parasites (Plasmodium and Haemoproteus species) in 2 common African birds species, the yellow-whiskered greenbul (Andropadus latirostris) and the olive sunbird (Cyanomitra olivacea), at 3 sites with distinct habitat characteristics in Ghana. First, we found an interaction between the site and host species for the prevalence of Plasmodium spp. and Haemoproteus spp. For the olive sunbird, the prevalence of Plasmodium spp., as well as the number of individuals with co-infections, varied significantly among the sites, but these measures remained constant for the yellow-whiskered greenbul. In addition, yellow-whiskered greenbuls infected with Haemoproteus spp. were found only at 1 site. Furthermore, for both bird species, the parasitemia intensity of Plasmodium spp. varied significantly among the 3 sites, but with opposing trends. These results suggest that spatial heterogeneity differently affects haemosporidian infection parameters in these vertebrate-hosts. Environmental conditions here can either favor or reduce parasite infection. We discuss the implications of these discrepancies for conservation and ecological studies of infectious diseases in natural populations.
机译：空间异质性会影响血孢子虫寄生虫的分布，患病率和多样性。先前的研究已经发现了关于生境特征和寄生虫基因型及其相互作用的复杂流行模式，但是关于寄生虫强度和共感染流行率在空间上如何变化的信息很少。在这里，我们使用分子方法和显微镜技术，报告了对两种常见非洲鸟类，黄须绿毛（Andropadus latirostris）和橄榄太阳鸟（Cyanomitra olivacea），位于加纳的3个具有明显栖息地特征的地点。首先，我们发现了疟原虫属物种的流行与位点和宿主物种之间的相互作用。和Haemoproteus spp。对于橄榄色太阳鸟，疟原虫属的流行率以及合并感染的个体数量在不同地点之间存在显着差异，但是对于黄须绿green而言，这些措施保持不变。此外，黄须绿色green虫感染了血红杆菌属。仅在1个站点被发现。此外，对于两种鸟类，疟原虫的寄生虫强度都很高。三个站点之间的差异很大，但趋势相反。这些结果表明，空间异质性在这些脊椎动物宿主中对血吸虫感染参数的影响不同。这里的环境条件可以促进或减少寄生虫感染。我们讨论了这些差异对自然人群传染病的保护和生态学研究的意义。

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