Estimating the distribution of Oryzomys palustris , a potential key host in expanding rickettsial tick‐borne disease risk
Estimating the distribution of Oryzomys palustris , a potential key host in expanding rickettsial tick‐borne disease risk
复制标题
DOI：
10.1002/ecs2.4445
复制
发表时间：
2023-03
期刊：
影响因子：
2.7
通讯作者：
C. Lippi;S. Canfield;Christina Espada;H. Gaff;S. Ryan
中科院分区：
文献类型：
--
作者：
C. Lippi;S. Canfield;Christina Espada;H. Gaff;S. Ryan
评估蜱传疾病风险的地理方法越来越多地被用于为公共卫生决策和监测工作提供信息。具有医学重要性的关键蜱种的分布通常被建模为环境因素的函数，使用生态位建模方法来捕获栖息地的适宜性。然而，这往往与关键宿主物种的潜在分布脱节，而关键宿主物种可能在实际传播周期和扩大蜱传疾病风险的风险潜力中发挥重要作用。利用物种分布模型，我们探讨了潜在的地理范围ofOryzomys palustris，沼泽稻鼠，这已被牵连作为一个潜在的水库主机ofRickettsia parkeri，病原体传播的墨西哥湾沿岸蜱（Amblyomma maculatum）在美国东南部。由于最近的分类重新分类O. palustrissubspecies，我们重新分类地理定位收集记录到较新的分支定义。我们模拟了这两个更新的分支在该地区的分布，首次建立了这两个分支的范围图和分布。这两个分支的预测分布表明，主要是海湾和东南沿海分布。估计适宜生境O.沼泽延伸到大西洋中部地区的南部，在加州沿海地区有一个不连续的、有限的适合区域。更广泛的分布预测表明，潜在的入侵沿着密西西比河。我们发现预测的O有相当大的重叠。沼泽地分布着A. maculatum，表明可能需要在这些重叠地区扩大监测工作，并注意宿主在传播周期中的作用。
Increasingly, geographic approaches to assessing the risk of tick‐borne diseases are being used to inform public health decision‐making and surveillance efforts. The distributions of key tick species of medical importance are often modeled as a function of environmental factors, using niche modeling approaches to capture habitat suitability. However, this is often disconnected from the potential distribution of key host species, which may play an important role in the actual transmission cycle and risk potential in expanding tick‐borne disease risk. Using species distribution modeling, we explore the potential geographic range ofOryzomys palustris, the marsh rice rat, which has been implicated as a potential reservoir host ofRickettsia parkeri, a pathogen transmitted by the Gulf Coast tick (Amblyomma maculatum) in the southeastern United States. Due to recent taxonomic reclassification ofO. palustrissubspecies, we reclassified geolocated collections records into the newer clade definitions. We modeled the distribution of the two updated clades in the region, establishing for the first time, range maps and distributions of these two clades. The predicted distribution of both clades indicates a largely Gulf and southeastern coastal distribution. Estimated suitable habitat forO. palustrisextends into the southern portion of the Mid‐Atlantic region, with a discontinuous, limited area of suitability in coastal California. Broader distribution predictions suggest potential incursions along the Mississippi River. We found considerable overlap of predictedO. palustrisranges with the distribution ofA. maculatum, indicating the potential need for extended surveillance efforts in those overlapping areas and attention to the role of hosts in transmission cycles.