Babalola Ayodele Samuel, Adeogun Adedapo O, Thabet Hala S, TagEldin Reham A, Oyeniyi Tolulope, Adekunle Olanrewaju, Izekor Romoke, Adetunji Oluwakemi, Olalekan Olagundoye, Omotayo Ahmed, Abiodun Olakiigbe, Adediran Adewale Daniel, Adekeye Taye, Adegbola Adesoye O, Isaac Chidinma, Okoko Phillip O, Harwood James F
Public Health and Epidemiology Department, Nigerian Institute of Medical Research, Yaba Lagos State, Nigeria.
United States Naval Medical Research Unit EURAFCENT, Cairo, Egypt.
PLoS Negl Trop Dis. 2025 Feb 6;19(2):e0012860. doi: 10.1371/journal.pntd.0012860. eCollection 2025 Feb.
The ecology and biology of mosquito disease vectors of the genus Aedes are highly dynamic, adapting to various climatic and topographic factors which makes their control challenging. Evidence-based control of Aedes mosquitoes requires a detailed understanding of this adaptability, which is greatly influenced by environmental dynamics. Understanding the drivers of their distribution is hence pertinent to predict disease risk. To better understand drivers and dynamics, we studied the distribution of Aedes mosquitoes in Lagos State, Nigeria, and its connection to climatic and human factors. Aedes larvae and adults were collected from eight Local Government Areas (LGAs, four urban and four rural) in Lagos State, resulting in 98 occurrence points. Using 23 environmental variables, we modeled the geographic distribution of Aedes spp. under current climatic conditions. Human population density was overlaid to estimate the risk of arboviral diseases. Although Aedes mosquitoes were found in all the eight LGAs in different proportions, species distribution varied considerably. Both Aedes aegypti and Aedes albopictus were found across the LGAs with evidence of species partitioning. Virtually all the LGAs were predicted to be highly suitable environments for Aedes mosquitoes, with only two LGAs being moderately suitable. Anthropogenic factors including the extensive accumulation of tires contribute to larval habitat availability for both Aedes aegypti and Aedes albopictus. Urban areas with high population density were also associated with increased larval habitat availability when compared with rural areas. Furthermore, the model suggests that LGAs sharing border with Ogun State are highly suitable environments for Aedes spp. Our study highlights that the main contributing factors to Aedes distribution were precipitation and temperature in the coldest quarter. This paper aims to understand how human and climatic factors affect Aedes mosquitoes distribution in Lagos State, which is crucial to prevent disease transmission.
伊蚊属蚊虫疾病传播媒介的生态学和生物学特性高度动态变化,能够适应各种气候和地形因素,这使得对它们的控制极具挑战性。基于证据的伊蚊控制需要详细了解这种适应性,而这种适应性受到环境动态变化的极大影响。因此,了解其分布的驱动因素对于预测疾病风险至关重要。为了更好地理解驱动因素和动态变化,我们研究了尼日利亚拉各斯州伊蚊的分布情况及其与气候和人类因素的关系。从拉各斯州的八个地方政府区域(四个城市区域和四个农村区域)收集了伊蚊幼虫和成虫,共获得98个出现点。利用23个环境变量,我们模拟了当前气候条件下伊蚊属的地理分布。叠加人口密度以估计虫媒病毒疾病的风险。尽管在所有八个地方政府区域都发现了不同比例的伊蚊,但物种分布差异很大。在各个地方政府区域都发现了埃及伊蚊和白纹伊蚊,并有物种分区的证据。几乎所有地方政府区域都被预测为伊蚊的高度适宜环境,只有两个地方政府区域为中度适宜。包括大量堆积轮胎在内的人为因素为埃及伊蚊和白纹伊蚊提供了幼虫栖息地。与农村地区相比,人口密度高的城市地区幼虫栖息地也更多。此外,模型表明与奥贡州接壤的地方政府区域是伊蚊属的高度适宜环境。我们的研究强调,伊蚊分布的主要促成因素是最寒冷季度的降水量和温度。本文旨在了解人类和气候因素如何影响拉各斯州伊蚊的分布,这对于预防疾病传播至关重要。