<b>Objective:</b> The objective is to<span "=""> compare a regular ovitrap versus an innovated larvitrap for monitoring <i>Aedes</i> spp. populations. <b>Materials an...<b>Objective:</b> The objective is to<span "=""> compare a regular ovitrap versus an innovated larvitrap for monitoring <i>Aedes</i> spp. populations. <b>Materials and Methods</b></span><b>:</b><span "=""> A total of 20 regular ovitraps and 20 innovated larvitraps were placed in pairs in 20 houses from the 5 de Febrero neighborhood in Tapachula, Chiapas, Mexico. The innovation consisted in the incorporation of a valve in the lower part of a half tire to drain the contents in a 2 L collection container. The evaluation was carried out during five weeks, collecting eggs and larvae from the ovitraps and innovated larvitraps, respectively. Positivity indexes and insectary production of adult <i>Aedes</i> spp. mosquitoes were compared by collection type. <b>Results</b></span><b>:</b><span "=""> Average positivity index for the five weeks period were 60% for ovitraps and 91.25% for innovated larvitraps. During the five weeks, 4043 <i>Ae.</i> <i>aegypti</i> and 703 <i>Ae.</i> <i>albopictus</i> adult mosquitoes were produced in the insectary from the eggs collected from ovitraps, while from innovated larvitraps were 9014 <i>Ae.</i> <i>aegypti</i>, 1205 <i>Ae.</i> <i>albopictus</i>, and 15 <i>Culex</i> spp. <b>Conclusion</b></span><b>:</b><span "=""> Collection by the innovated larvitrap was more efficient, collecting 3.56 times more <i>Ae.</i> <i>aegypti</i> than with ovitraps, using approximately the same effort in time for replacing the filter paper from traditional 1 L ovitraps. Since the logistics for the storage and placement of larvitraps may still be a disadvantage in comparison with ovitraps, their use could be specifically intended in sentinel sites for mosquito population monitoring for entomological surveillance purposes.展开更多
Collecting eggs of Aedes （Stegomyia） albopictus （Skuse, 1894） （Diptera, ram. Culicidae）, i.e. Asian tiger mosquito was carded out in August 2016. Fourteen （14） ovitraps were placed at 3 different places： the ...Collecting eggs of Aedes （Stegomyia） albopictus （Skuse, 1894） （Diptera, ram. Culicidae）, i.e. Asian tiger mosquito was carded out in August 2016. Fourteen （14） ovitraps were placed at 3 different places： the area Banja Bansko （near Strumica）, Mrzenci （Gevgelija） and at the border crossing between Macedonia-Greece （Bogorodica）. During one month the ovitraps were exposed for two weeks, near the vegetation that mosquitoes use as resting places, also in the places where people are present and close to potted flower arrangements. The collected eggs from the ovitraps were returned to the Entomological laboratory of the P.H.O. Center for public health-Skopje and put in an entomological （hand-made） cage. Under the optimum moisture and temperature, after a few days the adults emerged. The determination of species was performed using a binocular magnifier. A total of 50 mosquitoes were collected, of those 23 were male Ae. albopictus and 27 were female Ae. albopictus. These examples were verified by prof. Dusan Petric and the Medical entomology laboratory at the Faculty of Agficul^tre Novi Sad （Republic of Serbia）. The presence of Ae. albopictus in the Republic of Macedonia was for the first time determined. We are now even more motivated to investigate and prove the presence of tiger mosquitos in other locations in Macedonia.展开更多
目的对白纹伊蚊的空间分布情况和生态影响因子进行定量评价和分析,探索地理信息系统(geographic information system,GIS)和最大熵模型(maximum entropy model,MaxEnt)在白纹伊蚊监测中的应用。方法选取上海市松江区某大型综合性住宅社...目的对白纹伊蚊的空间分布情况和生态影响因子进行定量评价和分析,探索地理信息系统(geographic information system,GIS)和最大熵模型(maximum entropy model,MaxEnt)在白纹伊蚊监测中的应用。方法选取上海市松江区某大型综合性住宅社区作为研究对象,以2024年8—9月份4次诱蚊诱卵器监测数据为基础,通过全局空间自相关、热点分析、标准差椭圆和重心迁移轨迹分析白纹伊蚊空间分布特征。使用MaxEnt表征蚊虫生境偏好,利用ROC曲线下面积(area under curve,AUC)评估模型预测精确性,贡献率和置换重要值明确限制蚊虫分布的变量得分。结果整个监测周期共放置诱蚊诱卵器432个,其中回收389个,阳性90个,平均诱蚊诱卵指数23.14。4次监测的全局Moran's I指数均接近于0且P值大于0.05,不拒绝空间随机性的零假设。热点分析结果表明,4次监测均出现99%置信水平的高值聚集区域,监测期间未出现差异有统计学意义的低值空间聚类。前2次监测椭圆“向心力”更大,数据离散度较后2次监测结果小。重心呈“Z”字形向南迁移趋势,重心位置移动共计122.23 m。椭圆的交集表示阳性诱蚊诱卵器在时间和空间上的累积,提示应重点防控的区域。MaxEnt模型平均AUC值为0.716±0.054,贡献率排序前5位的环境变量依次为归一化植被指数、地表温度、最暖季度降水量、商业“兴趣点”(point of interest,POI)和住宅POI。结论GIS有助于识别蚊虫密度异常增高区域,归一化植被指数对蚊虫空间分布影响最显著。展开更多
文摘<b>Objective:</b> The objective is to<span "=""> compare a regular ovitrap versus an innovated larvitrap for monitoring <i>Aedes</i> spp. populations. <b>Materials and Methods</b></span><b>:</b><span "=""> A total of 20 regular ovitraps and 20 innovated larvitraps were placed in pairs in 20 houses from the 5 de Febrero neighborhood in Tapachula, Chiapas, Mexico. The innovation consisted in the incorporation of a valve in the lower part of a half tire to drain the contents in a 2 L collection container. The evaluation was carried out during five weeks, collecting eggs and larvae from the ovitraps and innovated larvitraps, respectively. Positivity indexes and insectary production of adult <i>Aedes</i> spp. mosquitoes were compared by collection type. <b>Results</b></span><b>:</b><span "=""> Average positivity index for the five weeks period were 60% for ovitraps and 91.25% for innovated larvitraps. During the five weeks, 4043 <i>Ae.</i> <i>aegypti</i> and 703 <i>Ae.</i> <i>albopictus</i> adult mosquitoes were produced in the insectary from the eggs collected from ovitraps, while from innovated larvitraps were 9014 <i>Ae.</i> <i>aegypti</i>, 1205 <i>Ae.</i> <i>albopictus</i>, and 15 <i>Culex</i> spp. <b>Conclusion</b></span><b>:</b><span "=""> Collection by the innovated larvitrap was more efficient, collecting 3.56 times more <i>Ae.</i> <i>aegypti</i> than with ovitraps, using approximately the same effort in time for replacing the filter paper from traditional 1 L ovitraps. Since the logistics for the storage and placement of larvitraps may still be a disadvantage in comparison with ovitraps, their use could be specifically intended in sentinel sites for mosquito population monitoring for entomological surveillance purposes.
文摘Collecting eggs of Aedes （Stegomyia） albopictus （Skuse, 1894） （Diptera, ram. Culicidae）, i.e. Asian tiger mosquito was carded out in August 2016. Fourteen （14） ovitraps were placed at 3 different places： the area Banja Bansko （near Strumica）, Mrzenci （Gevgelija） and at the border crossing between Macedonia-Greece （Bogorodica）. During one month the ovitraps were exposed for two weeks, near the vegetation that mosquitoes use as resting places, also in the places where people are present and close to potted flower arrangements. The collected eggs from the ovitraps were returned to the Entomological laboratory of the P.H.O. Center for public health-Skopje and put in an entomological （hand-made） cage. Under the optimum moisture and temperature, after a few days the adults emerged. The determination of species was performed using a binocular magnifier. A total of 50 mosquitoes were collected, of those 23 were male Ae. albopictus and 27 were female Ae. albopictus. These examples were verified by prof. Dusan Petric and the Medical entomology laboratory at the Faculty of Agficul^tre Novi Sad （Republic of Serbia）. The presence of Ae. albopictus in the Republic of Macedonia was for the first time determined. We are now even more motivated to investigate and prove the presence of tiger mosquitos in other locations in Macedonia.
文摘目的对白纹伊蚊的空间分布情况和生态影响因子进行定量评价和分析,探索地理信息系统(geographic information system,GIS)和最大熵模型(maximum entropy model,MaxEnt)在白纹伊蚊监测中的应用。方法选取上海市松江区某大型综合性住宅社区作为研究对象,以2024年8—9月份4次诱蚊诱卵器监测数据为基础,通过全局空间自相关、热点分析、标准差椭圆和重心迁移轨迹分析白纹伊蚊空间分布特征。使用MaxEnt表征蚊虫生境偏好,利用ROC曲线下面积(area under curve,AUC)评估模型预测精确性,贡献率和置换重要值明确限制蚊虫分布的变量得分。结果整个监测周期共放置诱蚊诱卵器432个,其中回收389个,阳性90个,平均诱蚊诱卵指数23.14。4次监测的全局Moran's I指数均接近于0且P值大于0.05,不拒绝空间随机性的零假设。热点分析结果表明,4次监测均出现99%置信水平的高值聚集区域,监测期间未出现差异有统计学意义的低值空间聚类。前2次监测椭圆“向心力”更大,数据离散度较后2次监测结果小。重心呈“Z”字形向南迁移趋势,重心位置移动共计122.23 m。椭圆的交集表示阳性诱蚊诱卵器在时间和空间上的累积,提示应重点防控的区域。MaxEnt模型平均AUC值为0.716±0.054,贡献率排序前5位的环境变量依次为归一化植被指数、地表温度、最暖季度降水量、商业“兴趣点”(point of interest,POI)和住宅POI。结论GIS有助于识别蚊虫密度异常增高区域,归一化植被指数对蚊虫空间分布影响最显著。
