Laboratorio de Entomología. Instituto de Medicina Regional, Universidad Nacional del Nordeste, Avda. Las Heras 727, 3500. Resistencia. Chaco. Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina.
Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina; Departamento de Ecología, Genética y Evolución, and Instituto de Ecología, Genética y Evolución de Buenos Aires (UBA-CONICET), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires. Ciudad Universitaria. Pab. 2, Piso4. Buenos Aires 1428. Argentina.
Acta Trop. 2021 Jun;218:105885. doi: 10.1016/j.actatropica.2021.105885. Epub 2021 Mar 11.
Aedes aegypti and Aedes albopictus are mosquito vectors of numerous arboviruses of sanitary importance. Presently in Argentina, neither Ae. aegypti nor Ae. albopictus, have displaced the other species in the places where they coexist, since the introduction of the latter in 1998. In this study, we evaluated whether these species coexist at different scales (ovitrap, microhabitat and habitat) in the city of Eldorado, Misiones province, northeast Argentina. We also analyzed the seasonal variation and climate variables related to the delay in egg hatching of both species. Mosquitoes were collected weekly, from June 2017 to May 2018, using ovitraps placed in urban areas. We conclude that Ae. aegypti and Ae. albopictus coexist in the study area, at the ovitrap, microhabitat and habitat scales. Furthermore, no pronounced pattern of delayed hatching has been observed for either species; however, eggs of Ae. albopictus laid during colder weeks and less rainfall needed a greater number of immersions to hatch, while for Ae. aegypti those laid during weeks with low rainfall and high temperatures showed the longest delay in hatching response.
埃及伊蚊和白纹伊蚊是具有重要卫生意义的多种虫媒病毒的蚊媒。目前在阿根廷，自 1998 年引入白纹伊蚊以来，埃及伊蚊和白纹伊蚊都没有在它们共存的地方取代对方。在这项研究中，我们评估了这两个物种是否在阿根廷东北部米西奥内斯省埃尔多拉多市的不同尺度（诱卵器、微生境和栖息地）共存。我们还分析了与两种蚊卵孵化延迟相关的季节性变化和气候变量。从 2017 年 6 月到 2018 年 5 月，每周使用放置在城市地区的诱卵器收集蚊子。我们的结论是，埃及伊蚊和白纹伊蚊在研究区域的诱卵器、微生境和栖息地尺度上共存。此外，我们没有观察到任何一种蚊的明显孵化延迟模式；然而，在较冷的周和降雨量较少的情况下产下的白纹伊蚊卵需要更多的浸泡才能孵化，而在降雨量较少、温度较高的周产下的埃及伊蚊卵则表现出最长的孵化延迟。
