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首页> 外文期刊>Parasitology >Assessing the diversity, host-specificity and infection patterns of apicomplexan parasites in reptiles from Oman, Arabia
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Assessing the diversity, host-specificity and infection patterns of apicomplexan parasites in reptiles from Oman, Arabia

机译：评估来自阿拉伯阿曼的爬行动物中apicomplexan寄生虫的多样性，宿主特异性和感染方式

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摘要

Understanding the processes that shape parasite diversification, their distribution and abundance provides valuable information on the dynamics and evolution of disease. In this study, we assessed the diversity, distribution, host-specificity and infection patterns of apicomplexan parasites in amphibians and reptiles from Oman, Arabia. Using a quantitative PCR approach we detected three apicomplexan parasites (haemogregarines, lankesterellids and sarcocystids). A total of 13 haemogregarine haplotypes were identified, which fell into four main clades in a phylogenetic framework. Phylogenetic analysis of six new lankesterellid haplotypes revealed that these parasites were distinct from, but phylogenetically related to, known Lankesterella species and might represent new taxa. The percentage of infected hosts (prevalence) and the number of haemogregarines in the blood (parasitaemia) varied significantly between gecko species. We also found significant differences in parasitaemia between haemogregarine parasite lineages (defined by phylogenetic clustering of haplotypes), suggesting differences in host-parasite compatibility between these lineages. For Pristurus rupestris, we found significant differences in haemogregarine prevalence between geographical areas. Our results suggest that host ecology and host relatedness may influence haemogregarine distributions and, more generally, highlight the importance of screening wild hosts from remote regions to provide new insights into parasite diversity.
机译：了解形成寄生虫多样性，其分布和丰度的过程可提供有关疾病动态和演变的有价值的信息。在这项研究中，我们评估了阿拉伯阿曼两栖动物和爬行动物中apicomplexan寄生虫的多样性，分布，宿主特异性和感染模式。使用定量PCR方法，我们检测到了三种apicomplexan寄生虫（血葡糖醛酸，lanesteresterd和肌囊藻）。总共鉴定出13个高血糖素单体型，在系统发育框架中分为四个主要进化枝。对六种新的兰氏单体型的系统发育分析表明，这些寄生虫与已知的兰氏菌种不同，但在系统发育上相关，并且可能代表新的分类单元。壁虎物种之间，感染宿主的百分比（患病率）和血液中血葡糖醛酸的数量（寄生虫血症）差异很大。我们还发现高血糖素寄生虫谱系（由单倍型的系统发育聚类定义）之间的寄生虫病显着差异，表明这些谱系之间的宿主-寄生虫相容性存在差异。对于Pristurus rupestris，我们发现地理区域之间的血葡糖胺普及率存在显着差异。我们的结果表明，寄主生态和寄主的相关性可能会影响血葡糖胺的分布，并且更普遍地说，突出显示了从偏远地区筛选野生寄主的重要性，以提供对寄生虫多样性的新见解。

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