Rodent community structure and Andes virus infection in sylvan and peridomestic habitats in northwestern Patagonia, Argentina.
Rodent community structure and Andes virus infection in sylvan and peridomestic habitats in northwestern Patagonia, Argentina.
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DOI：
10.1089/vbz.2009.0242
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发表时间：
2011-03
期刊：
影响因子：
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通讯作者：
Luciana Piudo;M. Monteverde;R. Susan Walker;R. Douglass
中科院分区：
文献类型：
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作者：
Luciana Piudo;M. Monteverde;R. Susan Walker;R. Douglass
农村地区自然栖息地的改变可能会影响原始啮齿动物群落的组成、多样性和均匀度。在汉坦病毒肺综合征等人畜共患病中，多样化群落的存在可以减轻主要宿主的影响，从而降低对人类的风险。本研究的目的是检查啮齿动物群落组成、安第斯病毒 (ANDV) 宿主（Oligoryzomys longicaudatus）的丰度、ANDV 流行率以及与阿根廷巴塔哥尼亚农村周围环境相关的时间变异性。我们在家庭周围环境和附近的森林地区捕获啮齿动物长达两年。家庭周围和森林环境中数量上占优势的物种有所不同。 O. longicaudatus 是家庭周围环境中最丰富的物种（> 50% 的个体）。家庭周围环境的多样性和均匀度随时间波动，均匀度突然下降与 ANDV 流行高峰同时发生。在家庭周围环境中发现 ANDV 阳性小鼠的概率是在森林栖息地中的 2.44 倍。家庭周围环境中啮齿动物群落的变化可能会增加人类接触 ANDV 的可能性，因为这些环境促进了 ANDV 抗体流行率较高的长尾鼠的存在。在与家庭周围环境相关的不稳定群落中，长尾蛔虫的相对丰度可能有利于种内接触，导致病毒传播的可能性更高。
Modifications of natural habitat in peridomestic rural areas could affect original rodent community composition, diversity, and evenness. In zoonoses such as hantavirus pulmonary syndrome, the presence of a diverse community can dilute the impact of the principal reservoir, reducing risk to humans. The goal of this study was to examine rodent community composition, abundance of Andes virus (ANDV) host (Oligoryzomys longicaudatus), ANDV prevalence, and temporal variability associated with rural peridomestic settings in Patagonia, Argentina. We trapped rodents in peridomestic settings and nearby sylvan areas for 2 years. The numerically dominant species differed between peridomestic and sylvan settings. O. longicaudatus was the most abundant species in peridomestic settings (>50% of individuals). Diversity and evenness in peridomestic settings fluctuated temporally, with an abrupt decline in evenness coinciding with peaks in ANDV prevalence. The probability of finding an ANDV-positive mouse in peridomestic settings was 2.44 times greater than in sylvan habitats. Changes in rodent communities in peridomestic settings may increase the probability for human exposure to ANDV because those settings promote the presence of O. longicaudatus with high ANDV antibody prevalence. High O. longicaudatus relative abundance in an unstable community associated with peridomestic settings may favor intraspecific contact, leading to a higher probability of virus transmission.