Obholz Gisella, Mansilla Ana Paula, San Blas Germán, Diaz Adrián
Instituto de Ciencias de la Tierra y Ambientales de La Pampa (INCITAP) - Universidad Nacional de La Pampa, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina.
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina; Laboratorio de Arbovirus, Instituto de Virología "Dr. J. M. Vanella", Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina.
Acta Trop. 2024 Jan;249:107052. doi: 10.1016/j.actatropica.2023.107052. Epub 2023 Oct 27.
Aedes aegypti is the main vector of arboviruses in the world. This mosquito species is distributed from tropical to temperate regions. In Argentina, it has been reported in 20 out of 23 provinces and reaches its southernmost distribution in the world. Its distribution and persistence are affected by meteorological, demographic and environmental factors, such as temperature, precipitation, and population. The aim of this study was to update and model the occurrence of Aedes aegypti in its southern limit of distribution in Argentina. To this end, a total of 37 sites were inspected in La Pampa and Río Negro provinces. Generalized Linear Models were used to explain the occurrence of Aedes aegypti based on meteorological, environmental and demographic variables. Aedes aegypti was found in 11 cities of La Pampa province where it had not been previously reported, but was not found in any of the cities evaluated in Río Negro province. The averaged model explaining the occurrence of Aedes aegypti included the minimum temperature, precipitation and interactions between maximum temperature and precipitation as explanatory variables. Although precipitation was statistically significant, other factors such as minimum temperature are also important in modeling the occurrence of Aedes aegypti in its southernmost distribution limit.
埃及伊蚊是世界上虫媒病毒的主要传播媒介。这种蚊子分布于从热带到温带的地区。在阿根廷，23个省份中有20个报告发现了埃及伊蚊，其分布最南端达到了世界上该物种分布的最南端。其分布和存续受到气象、人口和环境因素的影响，如温度、降水和人口。本研究的目的是更新并模拟埃及伊蚊在阿根廷分布最南端的出现情况。为此，在拉潘帕省和内乌肯省共检查了37个地点。使用广义线性模型，基于气象、环境和人口变量来解释埃及伊蚊的出现情况。在拉潘帕省的11个城市发现了埃及伊蚊，这些城市此前未报告过该物种，但在内乌肯省评估的任何城市均未发现。解释埃及伊蚊出现情况的平均模型包括最低温度、降水量以及最高温度与降水量之间的相互作用作为解释变量。尽管降水量具有统计学意义，但其他因素如最低温度在模拟埃及伊蚊在其最南端分布极限的出现情况时也很重要。
