Spatiotemporal analysis of sandfly fauna (Diptera: Psychodidae) in an endemic area of visceral leishmaniasis at Pantanal, central South America
Spatiotemporal analysis of sandfly fauna (Diptera: Psychodidae) in an endemic area of visceral leishmaniasis at Pantanal, central South America
复制标题
DOI：
10.1186/1756-3305-7-364
复制
发表时间：
2014-08-15
影响因子：
3.2
通讯作者：
de Oliveira, Alessandra Gutierrez
中科院分区：
文献类型：
--
作者：
Casaril, Aline Etelvina;Nazario Monaco, Neiva Zandonaide;de Oliveira, Alessandra Gutierrez
背景：城市化引起的环境变化会导致沙蝇的生态和行为以及利什曼病的流行病学发生变化。通过监测和绘制这种病媒传播疾病的风险区域，土工工具可以分析和识别时空模式。这项研究旨在描述科伦巴市的沙蝇区系，并将其与加拉蒂在1984年至1986年的三年期间所描述的数据进行比较。方法：从2012年4月至2013年3月，每周一次，从下午6：00至凌晨6：00，在装有自动捕光器的动植物体内和周围区域进行捕获在所分析的两个时期计算了下列指数：物种丰富度标准化指数(SISA)、Shannon多样性指数(H)和Pielou指数(J)。结果：共采集标本7370个，男6169个，女1201个，分布于12个物种。在这两项研究中，克鲁兹丝藻是最常见的物种(93.79%)，在标准化物种丰富度指数排名中排名第一。优势种为鲁氏种。玛丽亚·莱特和森特罗社区的克鲁兹现象表现为较低的公平指数。在目前的研究中，克里斯托·雷登托附近的沙蝇种类最多，在加拉蒂等人进行的研究中，沙蝇种类第二多。(Rev Se Publica 31：378-390,1997)。通过对1984年和2010年的卫星云图和植被指数的分析，发现红豆杉附近的植被密度最大。结论：城市化对绿洲密度和分布的影响是可能的。随着时间的推移，克鲁兹和其他物种。此外，数据表明，不同的沙蝇种群根据环境条件以不同的方式适应，这种适应并不一定取决于高植被覆盖率的存在。
Background: Environmental changes caused by urbanization can cause alterations in the ecology and behavior of sandflies and in the epidemiology of leishmaniasis. Geotechnological tools allow the analysis and recognition of spatiotemporal patterns by monitoring and mapping risk areas of this vector-borne disease. This study aims to describe the sandfly fauna in the municipality of Corumba and to compare it with the data described in a three-year period from 1984 to 1986 by Galati. A further aim was to analyze the influence of environmental changes on the composition of the fauna.Methods: Captures were conducted weekly from April 2012 to March 2013, in intra and peridomicile areas with automatic light traps, from 6:00 pm to 6:00 am. The following indices were calculated for both periods analyzed: Standardized Index of Species Abundance (SISA), Shannon's diversity index (H) and Pielou's index (J). The Normalized Difference Vegetation Index (NDVI) was extracted from a remote sensing LANDSAT-5 image.Results: In total, 7,370 specimens (6,169 males and 1,201 females) were collected, distributed among 12 species. Lutzomyia cruzi was the most frequent species (93,79%) and the first in the ranking of standardized species abundance index in both studies. The dominance of the species Lu. cruzi in the neighborhoods of Maria Leite and Centro was demonstrated by the low equitability index. The neighborhood of Cristo Redentor had the greatest diversity of sandflies in the present study and the second greatest in the study performed by Galati et al. (Rev Sa de Publica 31:378-390, 1997). Analyzing the satellite images and the NDVI from 1984 and 2010, the largest amount of dense vegetation was found in the neighborhood of Cristo Redentor.Conclusions: It was, therefore, possible to show how changes caused due to urbanization have affected the density and distribution of Lu. cruzi and other species over time. Moreover, the data suggest that different populations of sandflies adapt in different ways according to environmental conditions and the adaptation does not necessarily depends on the presence of high vegetation cover.