Landscape ecological analysis of spatial distribution of biting Anopheles minimus

我们对安进行了为期2年的调查。它们在石垣岛的栖息地，石垣岛靠近亚热带和该物种分布的北部边界。为了明确当地蚊虫种群的空间分布差异及其栖息地特征，考虑了景观生态学方法。采样工作包括用500克干冰加强的CDC捕光、人饵采集、浸渍法采集幼虫，以及在研究区域10公里× 3公里的19多个地点拍摄的1000多张照片。对影像进行数字化处理，估算树木密度、草、灌木和灌木的覆盖比例以及冠层。对地表成分也进行了定量鉴定。除了照片分析外，还考虑了从24张卫星图像计算的NDVI和其他参数，以便更准确地对生境进行分类和表征。利用主成分因子分析方法结合生境特征对蚊虫密度进行数据库分析，从景观生态学的角度解释了该地区蚊虫的分布。一个。在离繁殖地不远的地方和树冠覆盖度不高的地方，Minimus是丰富的。

We conducted a 2 years survey on An. minimus, a malaria vector, and their habitats on Ishigaki Island, which is situated close to the subtropics and the northern limits of the distribution of the species. To clarify difference in the spatial distribution of local mosquito populations in relation to characteristics of their habitats, a landscape ecological approach was considered. Sampling efforts consisted of CDC light-trapping enhanced by 500g dry ice, human baited collection, larval collection by dipping, and more than 1,000 photographs, were taken from more than 19 locations in the study area ranging 10km x 3km. The photographs were digitized and the density of tree, the proportion cover of grasses, bushes and shrubs and canopy were estimated. Components of ground surface also were quantitatively identified. In addition to the photograph analysis, NDVI and other parameters calculated from 24 satellite images were taken into account to classify and to characterize the habitats more precisely. A database analysis of mosquito density combined with habitat characteristics using the factor analysis of principal components' enabled us to explain the distribution of mosquitoes in the area from a landscape ecological perspective. An. minimus was abundant at locations not far from breeding sites, and where the canopy cover was not so dense.