Talaga S. auteur aut IRD Compin A. auteur aut IRD Azémar F. auteur aut IRD Leroy Céline auteur aut IRD Dejean A. auteur aut IRD text journalArticle eng text/pdf born digital access We aimed to determine how the degree of urbanization in a Neotropical city influences Aedes aegypti (L.), a pantropical vector of urban yellow fever, dengue, Zika and Chikungunia, via other mosquito species, whether they are competitors or predators, native to the area or invasive. We conducted experiments twice a month during one year in the city of Kourou, French Guiana, on three sites characterized by increasing percentages of imperviousness (i.e., 0.65%, 33.80% and 86.60%). These sites were located in a approximate to 5 ha forest fragment, a residential area with gardens, and in the older part of the city, respectively, and correspond to slightly, moderately and highly urbanized sites. There, we monitored twice a month during one year a total of 108 mosquito communities inhabiting four types of containers (i.e., a tank bromeliad, dry stumps of bamboo, ovitraps and car tires) installed in a random block design. In the tanks of the bromeliad, likely due to the acidity of the water, the immatures of native mosquito species prevailed, particularly Wyeomyia pertinans (Williston) in the slightly urbanized site. The general pattern was very similar in the three other types of containers where Limatus durhamii Theobald dominated in the slightly urbanized site, so that the abundance of Ae. aegypti immatures was low compared to those of native species. Yet, Ae. aegypti strongly dominated in the two more urbanized sites. These findings open up perspectives for vector management, including the conservation and/or the augmentation of natural enemies through modifications to landscape features. specialized Competition ecosystem services mosquitoes natural and artificial water containers urbanization gradient vector management GUYANE FRANCAISE 052 021 102 [Early access] [9 ] 2023 1519-566X https://www.documentation.ird.fr/hor/fdi:010088633 10.1007/s13744-023-01091-9 1519-566X [F B010088633] https://www.documentation.ird.fr/hor/fdi:010088633 https://www.documentation.ird.fr/intranet/publi/2023-12/010088633.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2023-12-15 2025-02-24 fdi:010088633 fre